test(langgraph): provide dedicated benchmark snapshot builder

Build secret-free snapshots from a pinned public revision and align file transfers with the LangSmith sandbox SDK.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

.github/scripts/run_langgraph_cli_test.py

@@ -41,7 +41,7 @@ def test(config: pathlib.Path, port: int, tag: str, verbose: bool):
         )
 
         # Compose up with wait (implies detach), similar to `langgraph up --wait`
-        args_up = [*args, "up", "--remove-orphans", "--wait"]
+        args_up = [*args, "up", "--remove-orphans", "--wait", "--wait-timeout", "180"]
 
         compose_cmd = ["docker", "compose"]
         if capabilities.compose_type == "standalone":

.github/workflows/_integration_test.yml

@@ -71,7 +71,7 @@ jobs:
           if [ -f ../.env ]; then echo "LANGSMITH_API_KEY=${{ secrets.LANGSMITH_API_KEY }}" >> ../.env; fi
           # Run the integration test using the built tag
           REPO_ROOT=$(git rev-parse --show-toplevel)
-          timeout 60 python "$REPO_ROOT/.github/scripts/run_langgraph_cli_test.py" -t ${{ matrix.example.tag }}
+          timeout --kill-after=30 300 python "$REPO_ROOT/.github/scripts/run_langgraph_cli_test.py" -t ${{ matrix.example.tag }}
 
       - name: Build JS service
         if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
@@ -98,7 +98,7 @@ jobs:
         run: |
           cp apps/agent/.env.example apps/agent/.env
           echo "LANGSMITH_API_KEY=${{ secrets.LANGSMITH_API_KEY }}" >> apps/agent/.env
-          timeout 60 python ../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-g -c apps/agent/langgraph.json
+          timeout --kill-after=30 300 python ../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-g -c apps/agent/langgraph.json
 
       - name: Build prerelease reqs service
         if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
@@ -113,11 +113,11 @@ jobs:
         run: |
           cp ../.env.example .env
           echo "LANGSMITH_API_KEY=${{ secrets.LANGSMITH_API_KEY }}" >> .env
-          timeout 60 python ../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-h
+          timeout --kill-after=30 300 python ../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-h
           echo "Finished starting up langgraph-test-h"
           LANGGRAPH_VERSION=$(docker run --rm --entrypoint "" langgraph-test-h python -c "import sys; from importlib.metadata import version; v = version('langgraph'); print(v);")
-          if [ "$LANGGRAPH_VERSION" != "1.1.5" ]; then
-            echo "LANGGRAPH_VERSION != 1.1.5; $LANGGRAPH_VERSION"
+          if [ "$LANGGRAPH_VERSION" != "1.2.6" ]; then
+            echo "LANGGRAPH_VERSION != 1.2.6; $LANGGRAPH_VERSION"
             exit 1
           fi
           LANGCHAIN_OPENAI_VERSION=$(docker run --rm --entrypoint "" langgraph-test-h python -c "import sys; from importlib.metadata import version; v = version('langchain-openai'); print(v);")
@@ -150,7 +150,7 @@ jobs:
         run: |
           cp .env.example .env
           echo "LANGSMITH_API_KEY=${{ secrets.LANGSMITH_API_KEY }}" >> .env
-          timeout 60 python ../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-uv-simple
+          timeout --kill-after=30 300 python ../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-uv-simple
 
       - name: Build uv monorepo service
         if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
@@ -165,4 +165,4 @@ jobs:
         run: |
           cp .env.example .env
           echo "LANGSMITH_API_KEY=${{ secrets.LANGSMITH_API_KEY }}" >> .env
-          timeout 60 python ../../../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-uv-monorepo
+          timeout --kill-after=30 300 python ../../../../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-uv-monorepo

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
       sdk_py: ${{ steps.filter.outputs.sdk_py || 'true' }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-      - uses: dorny/paths-filter@7b450fff21473bca461d4b92ce414b9d0420d706 # v4
+      - uses: dorny/paths-filter@ceb8a2b8f2d89434be7ff52d3de7ec3738c5cc9d # v4
         if: github.event_name != 'workflow_dispatch'
         id: filter
         with:

.github/workflows/deploy-redirects.yml

@@ -7,6 +7,10 @@ on:
     paths:
       - 'docs/**'
       - '.github/workflows/deploy-redirects.yml'
+  # llms.txt is fetched from docs.langchain.com at build time, so redeploy on a
+  # schedule to pick up docs changes that never touch this repo.
+  schedule:
+    - cron: '17 6 * * 1'
   workflow_dispatch:
 
 permissions:
@@ -46,4 +50,4 @@ jobs:
 
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128 # v5.0.0
+        uses: actions/deploy-pages@368f82528645a54fb793d4d04e342629a3f51346 # v5.0.1

.github/workflows/release.yml

@@ -139,23 +139,10 @@ jobs:
             echo EOF
           } >> "$GITHUB_OUTPUT"
 
-  test-pypi-publish:
-    needs:
-      - build
-      - release-notes
-    permissions:
-      contents: read
-      id-token: write
-    uses: ./.github/workflows/_test_release.yml
-    with:
-      working-directory: ${{ inputs.working-directory }}
-    secrets: inherit
-
   pre-release-checks:
     needs:
       - build
       - release-notes
-      - test-pypi-publish
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -180,31 +167,20 @@ jobs:
           enable-cache: false
           working-directory: ${{ inputs.working-directory }}
 
-      - name: Import published package
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: dist
+          path: ${{ inputs.working-directory }}/dist/
+
+      - name: Import dist package
         shell: bash
         working-directory: ${{ inputs.working-directory }}
         env:
           PKG_NAME: ${{ needs.build.outputs.pkg-name }}
           VERSION: ${{ needs.build.outputs.version }}
-        # Here we use:
-        # - The default regular PyPI index as the *primary* index, meaning
-        #   that it takes priority (https://pypi.org/simple)
-        # - The test PyPI index as an extra index, so that any dependencies that
-        #   are not found on test PyPI can be resolved and installed anyway.
-        #   (https://test.pypi.org/simple). This will include the PKG_NAME==VERSION
-        #   package because VERSION will not have been uploaded to regular PyPI yet.
-        # - attempt install again after 5 seconds if it fails because there is
-        #   sometimes a delay in availability on test pypi
+        # Install directly from the locally-built wheel (no index resolution needed).
         run: |
-          uv run pip install \
-            --extra-index-url https://test.pypi.org/simple/ \
-            "$PKG_NAME==$VERSION" || \
-          ( \
-            sleep 5 && \
-            uv run pip install \
-              --extra-index-url https://test.pypi.org/simple/ \
-              "$PKG_NAME==$VERSION" \
-          )
+          uv run pip install dist/*.whl
 
           if [[ "$PKG_NAME" == *prebuilt* ]]; then
             uv run pip install langgraph
@@ -226,7 +202,7 @@ jobs:
         run: uv sync --group test
         working-directory: ${{ inputs.working-directory }}
 
-      # Overwrite the local version of the package with the test PyPI version.
+      # Overwrite the local version of the package with the built version
       - name: Import published package (again)
         working-directory: ${{ inputs.working-directory }}
         shell: bash
@@ -234,14 +210,25 @@ jobs:
           PKG_NAME: ${{ needs.build.outputs.pkg-name }}
           VERSION: ${{ needs.build.outputs.version }}
         run: |
-          uv run pip install \
-            --extra-index-url https://test.pypi.org/simple/ \
-            "$PKG_NAME==$VERSION"
+          uv run pip install dist/*.whl
 
       - name: Run unit tests
         run: make test
         working-directory: ${{ inputs.working-directory }}
 
+  test-pypi-publish:
+    needs:
+      - build
+      - release-notes
+      - pre-release-checks
+    permissions:
+      contents: read
+      id-token: write
+    uses: ./.github/workflows/_test_release.yml
+    with:
+      working-directory: ${{ inputs.working-directory }}
+    secrets: inherit
+
   publish:
     needs:
       - build

.gitignore

@@ -76,7 +76,12 @@ __pypackages__/
 
 # Environments
 .env
+.env.*
 .envrc
+*.crt
+*.key
+*.pem
+credentials.json
 .venv
 .venvs
 env/
@@ -98,6 +103,7 @@ dmypy.json
 
 .vercel
 .turbo
+node_modules/
 .editorconfig
 .scratch
 .worktrees/

AGENTS.md

@@ -2,6 +2,14 @@
 
 This repository is a monorepo. Each library lives in a subdirectory under `libs/`.
 
+<corridor>
+
+## Corridor security analysis
+
+When Corridor's `analyzePlan` tool is available, create a plan and use the tool to analyze it before generating or modifying code. Apply the resulting security guidance before writing code.
+
+</corridor>
+
 When you modify code in any library, run the following commands in that library's directory before creating a pull request:
 
 - `make format` – run code formatters

CLAUDE.md

@@ -1,57 +0,0 @@
-# AGENTS Instructions
-
-This repository is a monorepo. Each library lives in a subdirectory under `libs/`.
-
-When you modify code in any library, run the following commands in that library's directory before creating a pull request:
-
-- `make format` – run code formatters
-- `make lint` – run the linter
-- `make test` – execute the test suite
-
-To run a particular test file or to pass additional pytest options you can specify the `TEST` variable:
-
-```
-TEST=path/to/test.py make test
-```
-
-Other pytest arguments can also be supplied inside the `TEST` variable.
-
-## Libraries
-
-The repository contains several Python and JavaScript/TypeScript libraries.
-Below is a high-level overview:
-
-- **checkpoint** – base interfaces for LangGraph checkpointers.
-- **checkpoint-postgres** – Postgres implementation of the checkpoint saver.
-- **checkpoint-sqlite** – SQLite implementation of the checkpoint saver.
-- **cli** – official command-line interface for LangGraph.
-- **langgraph** – core framework for building stateful, multi-actor agents.
-- **prebuilt** – high-level APIs for creating and running agents and tools.
-- **sdk-js** – JS/TS SDK for interacting with the LangGraph REST API.
-- **sdk-py** – Python SDK for the LangGraph Server API.
-
-### Dependency map
-
-The diagram below lists downstream libraries for each production dependency as
-declared in that library's `pyproject.toml` (or `package.json`).
-
-```text
-checkpoint
-├── checkpoint-postgres
-├── checkpoint-sqlite
-├── prebuilt
-└── langgraph
-
-prebuilt
-└── langgraph
-
-sdk-py
-├── langgraph
-└── cli
-
-sdk-js (standalone)
-```
-
-Changes to a library may impact all of its dependents shown above.
-
-- Do NOT use Sphinx-style double backtick formatting (` ``code`` `). Use single backticks (`` `code` ``) for inline code references in docstrings and comments.

docs/generate_redirects.py

@@ -12,13 +12,26 @@ which is SEO-friendly and treated similarly to 301 redirects by Google.
 To add new redirects, simply edit redirects.json and re-run this script.
 """
 
+import http.client
 import json
 import os
+import urllib.error
+import urllib.parse
+import urllib.request
 from pathlib import Path
 
 # Default fallback URL for any path not in the redirect map
 DEFAULT_REDIRECT = "https://docs.langchain.com/oss/python/langgraph/overview"
 
+# The docs site regenerates this index on every deploy, so fetching it here
+# keeps the published llms.txt from drifting. The URL is a hardcoded constant,
+# never built from input, and both it and the post-redirect URL are checked
+# against ALLOWED_LLMS_HOST before anything is read.
+CANONICAL_LLMS_URL = "https://docs.langchain.com/oss/python/langgraph/llms.txt"
+ALLOWED_LLMS_HOST = "docs.langchain.com"
+LLMS_FETCH_TIMEOUT = 30
+LLMS_MAX_BYTES = 1_000_000
+
 HTML_TEMPLATE = """<!doctype html>
 <html lang="en">
 <head>
@@ -75,6 +88,64 @@ CATCHALL_404_TEMPLATE = """<!doctype html>
 """
 
 
+def is_allowed_llms_url(url):
+    """Return True if url is HTTPS on the one host we accept content from."""
+    parsed = urllib.parse.urlsplit(url)
+    return parsed.scheme == "https" and parsed.hostname == ALLOWED_LLMS_HOST
+
+
+def fetch_canonical_llms_txt():
+    """Return the published LangGraph index, or None if it cannot be used.
+
+    Returning None leaves the caller on the committed docs/llms.txt, so a
+    docs.langchain.com outage degrades to a stale file rather than a broken
+    deploy or a published error page.
+    """
+    if not is_allowed_llms_url(CANONICAL_LLMS_URL):
+        print(f"Refusing to fetch {CANONICAL_LLMS_URL}: host not allowed")
+        return None
+
+    try:
+        with urllib.request.urlopen(  # noqa: S310 - constant, allowlisted URL
+            CANONICAL_LLMS_URL, timeout=LLMS_FETCH_TIMEOUT
+        ) as response:
+            # urlopen follows redirects, so re-check where it actually landed.
+            if not is_allowed_llms_url(response.url):
+                print(f"Refusing {CANONICAL_LLMS_URL}: redirected to {response.url}")
+                return None
+            body = response.read(LLMS_MAX_BYTES + 1)
+    # A connection dropped mid-body raises http.client.IncompleteRead, which
+    # descends from HTTPException rather than OSError, so catching only the
+    # urllib and OS errors would let it escape and fail the whole deploy.
+    except (
+        urllib.error.URLError,
+        http.client.HTTPException,
+        TimeoutError,
+        OSError,
+    ) as exc:
+        print(f"Could not fetch {CANONICAL_LLMS_URL}: {type(exc).__name__}: {exc}")
+        return None
+
+    if len(body) > LLMS_MAX_BYTES:
+        print(f"Refusing {CANONICAL_LLMS_URL}: larger than {LLMS_MAX_BYTES} bytes")
+        return None
+
+    try:
+        text = body.decode("utf-8")
+    except UnicodeDecodeError as exc:
+        print(f"Refusing {CANONICAL_LLMS_URL}: not valid UTF-8: {exc}")
+        return None
+
+    # An index opens with a markdown heading and links to the docs site. A
+    # body that does not is an error page or a truncated response, not content
+    # worth publishing.
+    if not text.startswith("# ") or f"https://{ALLOWED_LLMS_HOST}/" not in text:
+        print(f"Refusing {CANONICAL_LLMS_URL}: does not look like an llms.txt index")
+        return None
+
+    return text
+
+
 def generate_redirects():
     script_dir = Path(__file__).parent
     output_dir = script_dir / "_site"
@@ -126,14 +197,19 @@ def generate_redirects():
     catchall_404.write_text(CATCHALL_404_TEMPLATE.format(default_url=DEFAULT_REDIRECT))
     print(f"Created: {catchall_404}")
 
-    # Copy static files (like llms.txt) that can't be redirected via HTML
-    static_files = ["llms.txt"]
-    for static_file in static_files:
-        src = script_dir / static_file
+    # llms.txt can't be redirected via HTML, so publish the docs site's own
+    # generated index. The committed copy is only a fallback.
+    llms_txt = fetch_canonical_llms_txt()
+    if llms_txt is not None:
+        (output_dir / "llms.txt").write_text(llms_txt)
+        print(f"Fetched: {output_dir / 'llms.txt'} (from {CANONICAL_LLMS_URL})")
+    else:
+        src = script_dir / "llms.txt"
         if src.exists():
-            dst = output_dir / static_file
-            dst.write_text(src.read_text())
-            print(f"Copied: {dst}")
+            (output_dir / "llms.txt").write_text(src.read_text())
+            print(f"Copied: {output_dir / 'llms.txt'} (fallback, may be stale)")
+        else:
+            print("No llms.txt fetched and no committed fallback; skipping")
 
     print(f"\nGenerated {len(redirects)} redirect files in {output_dir}")
 

docs/llms.txt

@@ -1,35 +1,49 @@
-# LangGraph
+# Docs by LangChain: LangGraph (Python)
 
-LangGraph documentation has moved to docs.langchain.com.
+> Markdown index of the LangGraph (Python) documentation.
 
-## Overview
+## LangGraph (Python)
 
-- [LangGraph Overview](https://docs.langchain.com/oss/python/langgraph/overview): Introduction to LangGraph, a library for building stateful, multi-actor applications with LLMs.
-- [Why LangGraph?](https://docs.langchain.com/oss/python/langgraph/why-langgraph): Motivation for LangGraph and its key features.
-
-## Core Concepts
-
-- [Graph API](https://docs.langchain.com/oss/python/langgraph/graph-api): Learn how to define state, create nodes, and connect them with edges.
-- [Streaming](https://docs.langchain.com/oss/python/langgraph/streaming): Stream outputs from your graph for better UX.
-- [Persistence](https://docs.langchain.com/oss/python/langgraph/persistence): Add memory and checkpointing to your graphs.
-- [Add Memory](https://docs.langchain.com/oss/python/langgraph/add-memory): Implement short-term and long-term memory.
-- [Workflows & Agents](https://docs.langchain.com/oss/python/langgraph/workflows-agents): Build agents and workflows with LangGraph.
-
-## How-To Guides
-
-- [Use Subgraphs](https://docs.langchain.com/oss/python/langgraph/use-subgraphs): Compose graphs using subgraphs.
-- [Observability](https://docs.langchain.com/oss/python/langgraph/observability): Add tracing and debugging to your graphs.
-- [Common Errors](https://docs.langchain.com/oss/python/langgraph/common-errors): Troubleshoot common LangGraph errors.
-
-## Tutorials
-
-- [Agentic RAG](https://docs.langchain.com/oss/python/langgraph/agentic-rag): Build an agentic RAG system with LangGraph.
-- [SQL Agent](https://docs.langchain.com/oss/python/langgraph/sql-agent): Create a SQL agent with LangGraph.
-
-## Reference
-
-- [API Reference](https://reference.langchain.com/python/langgraph/): Complete API documentation for LangGraph.
-
-## LangGraph Platform
-
-For deploying LangGraph applications in production, see the [LangSmith documentation](https://docs.langchain.com/langsmith/agent-server).
+- [Memory](https://docs.langchain.com/oss/python/langgraph/add-memory.md)
+- [Build a custom RAG agent with LangGraph](https://docs.langchain.com/oss/python/langgraph/agentic-rag.md)
+- [Application structure](https://docs.langchain.com/oss/python/langgraph/application-structure.md)
+- [Backward compatibility](https://docs.langchain.com/oss/python/langgraph/backward-compatibility.md)
+- [Case studies](https://docs.langchain.com/oss/python/langgraph/case-studies.md)
+- [Changelog](https://docs.langchain.com/oss/python/langgraph/changelog-js.md)
+- [Changelog](https://docs.langchain.com/oss/python/langgraph/changelog-py.md)
+- [Checkpointers](https://docs.langchain.com/oss/python/langgraph/checkpointers.md)
+- [Choosing between Graph and Functional APIs](https://docs.langchain.com/oss/python/langgraph/choosing-apis.md)
+- [Deployment](https://docs.langchain.com/oss/python/langgraph/deploy.md)
+- [GRAPH_RECURSION_LIMIT](https://docs.langchain.com/oss/python/langgraph/errors/GRAPH_RECURSION_LIMIT.md)
+- [INVALID_CHAT_HISTORY](https://docs.langchain.com/oss/python/langgraph/errors/INVALID_CHAT_HISTORY.md)
+- [INVALID_CONCURRENT_GRAPH_UPDATE](https://docs.langchain.com/oss/python/langgraph/errors/INVALID_CONCURRENT_GRAPH_UPDATE.md)
+- [INVALID_GRAPH_NODE_RETURN_VALUE](https://docs.langchain.com/oss/python/langgraph/errors/INVALID_GRAPH_NODE_RETURN_VALUE.md)
+- [MISSING_CHECKPOINTER](https://docs.langchain.com/oss/python/langgraph/errors/MISSING_CHECKPOINTER.md)
+- [MULTIPLE_SUBGRAPHS](https://docs.langchain.com/oss/python/langgraph/errors/MULTIPLE_SUBGRAPHS.md)
+- [Event streaming](https://docs.langchain.com/oss/python/langgraph/event-streaming.md)
+- [Fault tolerance](https://docs.langchain.com/oss/python/langgraph/fault-tolerance.md)
+- [Custom stream channels](https://docs.langchain.com/oss/python/langgraph/frontend/custom-stream-channels.md)
+- [Graph execution](https://docs.langchain.com/oss/python/langgraph/frontend/graph-execution.md)
+- [Overview](https://docs.langchain.com/oss/python/langgraph/frontend/overview.md)
+- [Functional API overview](https://docs.langchain.com/oss/python/langgraph/functional-api.md)
+- [Graph API overview](https://docs.langchain.com/oss/python/langgraph/graph-api.md)
+- [Install LangGraph](https://docs.langchain.com/oss/python/langgraph/install.md)
+- [Interrupts](https://docs.langchain.com/oss/python/langgraph/interrupts.md)
+- [Run a local server](https://docs.langchain.com/oss/python/langgraph/local-server.md)
+- [LangSmith Observability](https://docs.langchain.com/oss/python/langgraph/observability.md)
+- [LangGraph overview](https://docs.langchain.com/oss/python/langgraph/overview.md)
+- [Persistence](https://docs.langchain.com/oss/python/langgraph/persistence.md)
+- [LangGraph runtime](https://docs.langchain.com/oss/python/langgraph/pregel.md)
+- [Quickstart](https://docs.langchain.com/oss/python/langgraph/quickstart.md)
+- [Build a custom SQL agent](https://docs.langchain.com/oss/python/langgraph/sql-agent.md)
+- [Stores](https://docs.langchain.com/oss/python/langgraph/stores.md)
+- [Streaming](https://docs.langchain.com/oss/python/langgraph/streaming.md)
+- [LangSmith Studio](https://docs.langchain.com/oss/python/langgraph/studio.md)
+- [Test](https://docs.langchain.com/oss/python/langgraph/test.md)
+- [Thinking in LangGraph](https://docs.langchain.com/oss/python/langgraph/thinking-in-langgraph.md)
+- [Agent Chat UI](https://docs.langchain.com/oss/python/langgraph/ui.md)
+- [Use the functional API](https://docs.langchain.com/oss/python/langgraph/use-functional-api.md)
+- [Use the graph API](https://docs.langchain.com/oss/python/langgraph/use-graph-api.md)
+- [Subgraphs](https://docs.langchain.com/oss/python/langgraph/use-subgraphs.md)
+- [Use time-travel](https://docs.langchain.com/oss/python/langgraph/use-time-travel.md)
+- [Workflows and agents](https://docs.langchain.com/oss/python/langgraph/workflows-agents.md)

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/test_delta_channel_history.py

@@ -267,6 +267,61 @@ async def test_history_seed_ancestor_own_writes_are_replayed(
     )
 
 
+# Every uuid4 `build_delta_chain` tags its own writes with sorts between these
+# two, so task_id order is fixed and always disagrees with task_path order.
+TASK_ID_SORTS_FIRST = "00000000-0000-0000-0000-000000000000"
+TASK_ID_SORTS_LAST = "ffffffff-ffff-ffff-ffff-ffffffffffff"
+
+
+async def test_history_orders_parallel_writes_by_task_path(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Writes from parallel tasks replay in task_path order, not task_id order."""
+    configs = await build_delta_chain(
+        saver,
+        thread_id=str(uuid4()),
+        channel="ch",
+        snapshots_at_steps=[0],
+        total_steps=3,
+    )
+    step_1, head = configs[1], configs[2]
+    await saver.aput_writes(
+        step_1, [("ch", "second")], TASK_ID_SORTS_FIRST, "~pull, 02"
+    )
+    await saver.aput_writes(step_1, [("ch", "first")], TASK_ID_SORTS_LAST, "~pull, 01")
+
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    values = [w[2] for w in result["ch"]["writes"]]
+    assert values == [1, "first", "second"], (
+        f"Expected task_path order [1, 'first', 'second'], got {values}. "
+        "Ordering by (task_id, idx) alone yields [1, 'second', 'first']."
+    )
+
+
+async def test_history_orders_pathless_writes_first(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Writes stored without a task_path (graph input) replay before task writes."""
+    configs = await build_delta_chain(
+        saver,
+        thread_id=str(uuid4()),
+        channel="ch",
+        snapshots_at_steps=[0],
+        total_steps=3,
+    )
+    step_1, head = configs[1], configs[2]
+    await saver.aput_writes(
+        step_1, [("ch", "from_node")], TASK_ID_SORTS_FIRST, "~pull, a"
+    )
+    await saver.aput_writes(step_1, [("ch", "from_input")], TASK_ID_SORTS_LAST)
+
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    values = [w[2] for w in result["ch"]["writes"]]
+    assert values == [1, "from_input", "from_node"], (
+        f"Expected pathless writes first, got {values}"
+    )
+
+
 ALL_DELTA_CHANNEL_HISTORY_TESTS = [
     test_history_returns_writes_oldest_first,
     test_history_seed_is_nearest_snapshot,
@@ -276,6 +331,8 @@ ALL_DELTA_CHANNEL_HISTORY_TESTS = [
     test_history_walk_to_root_no_seed,
     test_history_migration_plain_value_as_seed,
     test_history_seed_ancestor_own_writes_are_replayed,
+    test_history_orders_parallel_writes_by_task_path,
+    test_history_orders_pathless_writes_first,
 ]
 
 

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/test_get_tuple.py

@@ -176,6 +176,35 @@ async def test_get_tuple_pending_writes(saver: BaseCheckpointSaver) -> None:
     )
 
 
+async def test_get_tuple_pending_writes_in_writes_sort_key_order(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """pending_writes come back in writes_sort_key order, not put or task_id order."""
+    config = generate_config(str(uuid4()))
+    stored = await saver.aput(config, generate_checkpoint(), generate_metadata(), {})
+    await saver.aput_writes(
+        stored, [("ch", "b")], "00000000-0000-0000-0000-000000000000", "~pull, 02"
+    )
+    await saver.aput_writes(
+        stored,
+        [("ch", "a1"), ("ch", "a2")],
+        "ffffffff-ffff-ffff-ffff-ffffffffffff",
+        "~pull, 01",
+    )
+    await saver.aput_writes(
+        stored, [("ch", "input")], "88888888-8888-8888-8888-888888888888"
+    )
+
+    tup = await saver.aget_tuple(stored)
+    assert tup is not None
+    values = [w[2] for w in tup.pending_writes or []]
+    assert values == ["input", "a1", "a2", "b"], (
+        f"Expected writes_sort_key order ['input', 'a1', 'a2', 'b'], got {values}. "
+        "Put order gives ['b', 'a1', 'a2', 'input'], task_id order gives "
+        "['b', 'input', 'a1', 'a2']."
+    )
+
+
 async def test_get_tuple_respects_namespace(saver: BaseCheckpointSaver) -> None:
     """checkpoint_ns filtering."""
     tid = str(uuid4())
@@ -223,6 +252,7 @@ ALL_GET_TUPLE_TESTS = [
     test_get_tuple_metadata,
     test_get_tuple_parent_config,
     test_get_tuple_pending_writes,
+    test_get_tuple_pending_writes_in_writes_sort_key_order,
     test_get_tuple_respects_namespace,
     test_get_tuple_nonexistent_checkpoint_id,
 ]

libs/checkpoint-conformance/tests/test_validate_memory.py

@@ -14,8 +14,8 @@ async def memory_checkpointer():
 
 
 @pytest.mark.asyncio
-async def test_validate_memory_base():
-    """InMemorySaver passes all base capability tests."""
+async def test_validate_memory():
+    """InMemorySaver passes the tests of every capability it implements."""
     report = await validate(memory_checkpointer)
     report.print_report()
-    assert report.passed_all_base(), f"Base tests failed: {report.to_dict()}"
+    assert report.passed_all(), f"Capability tests failed: {report.to_dict()}"

libs/checkpoint-conformance/uv.lock

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-version = "4.13.0"
+version = "4.14.2"
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     { name = "idna" },
     { name = "typing-extensions", marker = "python_full_version < '3.13'" },
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@@ -36,11 +36,11 @@ wheels = [
 
 [[package]]
 name = "certifi"
-version = "2026.4.22"
+version = "2026.10.19"
 source = { registry = "https://pypi.org/simple" }
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+    { url = "https://files.pythonhosted.org/packages/c4/51/29046e48f693c54e5b7412216d447a1d8362c9653148d98c02cdf65fa733/certifi-2026.10.19-py3-none-any.whl", hash = "sha256:42d35340cc5b9ba78e818ddbff0c5b1c2b779de448a340fd1b989f5fa8670e1b", size = 136464, upload-time = "2026-10-20T02:24:15.072Z" },
 ]
 
 [[package]]
@@ -162,7 +162,7 @@ name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+    { name = "typing-extensions" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" }
 wheels = [
@@ -279,7 +279,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.2.0"
+version = "4.3.0"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -809,27 +809,27 @@ wheels = [
 
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libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py

@@ -27,10 +27,15 @@ from psycopg_pool import ConnectionPool
 from langgraph.checkpoint.postgres import _internal
 from langgraph.checkpoint.postgres.base import (
     _DELTA_PAGE_SIZE,
+    PRUNE_DELETE_THREADS_SQL,
+    PRUNE_STRATEGIES,
     BasePostgresSaver,
     _build_delta_stage1_sql,
     _build_delta_stage2_sql,
     _DeltaStage2Row,
+    _execute,
+    _keep_latest,
+    _refuse_delta_threads,
 )
 from langgraph.checkpoint.postgres.shallow import ShallowPostgresSaver
 
@@ -401,6 +406,73 @@ class PostgresSaver(BasePostgresSaver):
                 (str(thread_id),),
             )
 
+    def prune(
+        self,
+        thread_ids: Sequence[str],
+        *,
+        strategy: str = "keep_latest",
+    ) -> None:
+        """Prune checkpoints for the given threads.
+
+        `"delete"` removes every checkpoint, write and blob of the threads, in
+        one transaction.
+
+        `"keep_latest"` keeps the latest checkpoint of each namespace (the one
+        `get_tuple` loads, plus its parent when it predates v4 and has pending
+        sends), with its pending writes and the blobs it references, and
+        deletes the rest. A kept checkpoint whose parent it deletes is left with
+        no parent. A subgraph call's namespace is deleted with the root
+        checkpoint the call started from, except a `checkpointer=True`
+        subgraph's, which keeps its latest checkpoint. Each thread is pruned in
+        its own transaction, on one snapshot of it, so a run appending to the
+        thread meanwhile is safe; forking or replaying from a checkpoint being
+        deleted is not. A thread that fails because another transaction changed
+        it leaves the threads before it pruned, and retrying is safe.
+
+        `"keep_latest"` refuses threads that use a `DeltaChannel`, since it
+        rebuilds the latest value from older checkpoints: if any requested
+        thread does, nothing is pruned. A thread that starts using one before
+        its turn in the batch is refused then, after the threads before it.
+
+        Args:
+            thread_ids: The thread IDs to prune.
+            strategy: `"keep_latest"` or `"delete"`.
+
+        Raises:
+            TypeError: If `thread_ids` is a single string.
+            ValueError: If `strategy` is unknown.
+            NotImplementedError: If `strategy` is `"keep_latest"` and a thread
+                uses a `DeltaChannel`.
+            psycopg.errors.SerializationFailure: If another transaction, such
+                as a second prune, changes a thread's rows while `"keep_latest"`
+                prunes it.
+            psycopg.errors.DeadlockDetected: If a second prune of a thread runs
+                at the same time.
+        """
+        if isinstance(thread_ids, str):
+            raise TypeError("thread_ids must be a sequence of thread IDs, not a str")
+        if strategy not in PRUNE_STRATEGIES:
+            raise ValueError(f"Unknown prune strategy: {strategy!r}")
+        thread_ids = [str(t) for t in thread_ids]
+        if not thread_ids:
+            return
+        if strategy == "delete":
+            with self._cursor() as cur, cur.connection.transaction():
+                for sql in PRUNE_DELETE_THREADS_SQL:
+                    cur.execute(sql, (thread_ids,))
+            return
+        with self._cursor() as cur:
+            _execute(cur, _refuse_delta_threads(thread_ids))
+        for thread_id in thread_ids:
+            with self._cursor() as cur:
+                if self.pipe:
+                    # The transaction has to start with its isolation level, and
+                    # in pipeline mode it would take in what ran since the last
+                    # sync.
+                    self.pipe.sync()
+                with cur.connection.transaction():
+                    _execute(cur, _keep_latest(thread_id))
+
     @contextmanager
     def _cursor(self, *, pipeline: bool = False) -> Iterator[Cursor[DictRow]]:
         """Create a database cursor as a context manager.
@@ -448,11 +520,13 @@ class PostgresSaver(BasePostgresSaver):
 
         Two-stage query, both stages cover ALL requested channels:
 
-        * Stage 1 (paged): dynamic SELECT over `checkpoints` with K parallel
-          JSONB key lookups (one column pair per channel) — no subquery, no
-          aggregation. Pages newest-first by `checkpoint_id` with a cursor;
-          page size is `_DELTA_PAGE_SIZE`. Stops paging when every channel
-          has found its seed or the chain is exhausted.
+        * Stage 1 (paged): dynamic SELECT over `checkpoints` with three
+          columns per channel: its version, an `EXISTS` probe for a stored
+          blob at that version, and its inline value. Pages newest-first by
+          `checkpoint_id`, starting at the target; page size is
+          `_DELTA_PAGE_SIZE`.
+          Stops paging when every channel has found its seed or a page comes
+          back short.
 
         * Stage 2 (per-channel UNION ALL): one branch per channel reading
           `checkpoint_writes` filtered to that channel's specific
@@ -467,7 +541,7 @@ class PostgresSaver(BasePostgresSaver):
         thread_id = config["configurable"]["thread_id"]
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         checkpoint_id = get_checkpoint_id(config)
-        if checkpoint_id is None:
+        if not checkpoint_id:
             target = self.get_tuple(config)
             if target is None:
                 return {ch: {"writes": []} for ch in channels}
@@ -475,7 +549,7 @@ class PostgresSaver(BasePostgresSaver):
 
         # Stage 1: paged K-JSONB-lookup scan, walking the parent chain in
         # Python after each page. Stops as soon as every channel has its seed.
-        stage1_sql = _build_delta_stage1_sql(channels, paged=True)
+        stage1_sql = _build_delta_stage1_sql(channels, paged=True, include_cursor=True)
         parent_of: dict[str, str | None] = {}
         ver_by_i_by_cid: list[dict[str, str | None]] = [{} for _ in channels]
         hb_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
@@ -485,7 +559,7 @@ class PostgresSaver(BasePostgresSaver):
         seed_inline_by_ch: dict[str, Any] = {}
         walk_cursor_by_ch: dict[str, str | None] = {}
         seeded: set[str] = set()
-        cursor: str | None = None
+        cursor: str | None = checkpoint_id
 
         with self._cursor() as cur:
             while True:
@@ -494,7 +568,7 @@ class PostgresSaver(BasePostgresSaver):
                     # ver_i, blob channel, blob version, inline_i
                     stage1_params.extend([ch, ch, ch, ch])
                 stage1_params.extend(
-                    [thread_id, checkpoint_ns, cursor, cursor, _DELTA_PAGE_SIZE]
+                    [thread_id, checkpoint_ns, cursor, _DELTA_PAGE_SIZE]
                 )
                 cur.execute(stage1_sql, stage1_params)
                 page = cur.fetchall()
@@ -526,6 +600,7 @@ class PostgresSaver(BasePostgresSaver):
                 if len(seeded) == len(channels) or len(page) < _DELTA_PAGE_SIZE:
                     break
                 cursor = oldest
+                stage1_sql = _build_delta_stage1_sql(channels, paged=True)
 
         # Stage 2: per-channel UNION ALL — one writes branch per channel
         # with non-empty chain, plus one blob branch per seeded channel.

libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py

@@ -27,10 +27,15 @@ from psycopg_pool import AsyncConnectionPool
 from langgraph.checkpoint.postgres import _ainternal
 from langgraph.checkpoint.postgres.base import (
     _DELTA_PAGE_SIZE,
+    PRUNE_DELETE_THREADS_SQL,
+    PRUNE_STRATEGIES,
     BasePostgresSaver,
+    _aexecute,
     _build_delta_stage1_sql,
     _build_delta_stage2_sql,
     _DeltaStage2Row,
+    _keep_latest,
+    _refuse_delta_threads,
 )
 from langgraph.checkpoint.postgres.shallow import AsyncShallowPostgresSaver
 
@@ -360,6 +365,55 @@ class AsyncPostgresSaver(BasePostgresSaver):
                 (str(thread_id),),
             )
 
+    async def aprune(
+        self,
+        thread_ids: Sequence[str],
+        *,
+        strategy: str = "keep_latest",
+    ) -> None:
+        """Prune checkpoints for the given threads.
+
+        See `PostgresSaver.prune` for what each strategy keeps.
+
+        Args:
+            thread_ids: The thread IDs to prune.
+            strategy: `"keep_latest"` or `"delete"`.
+
+        Raises:
+            TypeError: If `thread_ids` is a single string.
+            ValueError: If `strategy` is unknown.
+            NotImplementedError: If `strategy` is `"keep_latest"` and a thread
+                uses a `DeltaChannel`.
+            psycopg.errors.SerializationFailure: If another transaction, such
+                as a second prune, changes a thread's rows while `"keep_latest"`
+                prunes it.
+            psycopg.errors.DeadlockDetected: If a second prune of a thread runs
+                at the same time.
+        """
+        if isinstance(thread_ids, str):
+            raise TypeError("thread_ids must be a sequence of thread IDs, not a str")
+        if strategy not in PRUNE_STRATEGIES:
+            raise ValueError(f"Unknown prune strategy: {strategy!r}")
+        thread_ids = [str(t) for t in thread_ids]
+        if not thread_ids:
+            return
+        if strategy == "delete":
+            async with self._cursor() as cur, cur.connection.transaction():
+                for sql in PRUNE_DELETE_THREADS_SQL:
+                    await cur.execute(sql, (thread_ids,))
+            return
+        async with self._cursor() as cur:
+            await _aexecute(cur, _refuse_delta_threads(thread_ids))
+        for thread_id in thread_ids:
+            async with self._cursor() as cur:
+                if self.pipe:
+                    # The transaction has to start with its isolation level, and
+                    # in pipeline mode it would take in what ran since the last
+                    # sync.
+                    await self.pipe.sync()
+                async with cur.connection.transaction():
+                    await _aexecute(cur, _keep_latest(thread_id))
+
     @asynccontextmanager
     async def _cursor(
         self, *, pipeline: bool = False
@@ -417,13 +471,13 @@ class AsyncPostgresSaver(BasePostgresSaver):
         thread_id = config["configurable"]["thread_id"]
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         checkpoint_id = get_checkpoint_id(config)
-        if checkpoint_id is None:
+        if not checkpoint_id:
             target = await self.aget_tuple(config)
             if target is None:
                 return {ch: {"writes": []} for ch in channels}
             checkpoint_id = target.config["configurable"]["checkpoint_id"]
 
-        stage1_sql = _build_delta_stage1_sql(channels, paged=True)
+        stage1_sql = _build_delta_stage1_sql(channels, paged=True, include_cursor=True)
         parent_of: dict[str, str | None] = {}
         ver_by_i_by_cid: list[dict[str, str | None]] = [{} for _ in channels]
         hb_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
@@ -433,7 +487,7 @@ class AsyncPostgresSaver(BasePostgresSaver):
         seed_inline_by_ch: dict[str, Any] = {}
         walk_cursor_by_ch: dict[str, str | None] = {}
         seeded: set[str] = set()
-        cursor: str | None = None
+        cursor: str | None = checkpoint_id
 
         async with self._cursor() as cur:
             while True:
@@ -442,7 +496,7 @@ class AsyncPostgresSaver(BasePostgresSaver):
                     # ver_i, blob channel, blob version, inline_i
                     stage1_params.extend([ch, ch, ch, ch])
                 stage1_params.extend(
-                    [thread_id, checkpoint_ns, cursor, cursor, _DELTA_PAGE_SIZE]
+                    [thread_id, checkpoint_ns, cursor, _DELTA_PAGE_SIZE]
                 )
                 await cur.execute(stage1_sql, stage1_params)
                 page = await cur.fetchall()
@@ -472,6 +526,7 @@ class AsyncPostgresSaver(BasePostgresSaver):
                 if len(seeded) == len(channels) or len(page) < _DELTA_PAGE_SIZE:
                     break
                 cursor = oldest
+                stage1_sql = _build_delta_stage1_sql(channels, paged=True)
 
         channels_with_chain = [ch for ch in channels if chain_by_ch[ch]]
         channels_with_seed = [ch for ch in channels if seed_ver_by_ch[ch] is not None]
@@ -687,5 +742,50 @@ class AsyncPostgresSaver(BasePostgresSaver):
             self.adelete_thread(thread_id), self.loop
         ).result()
 
+    def prune(
+        self,
+        thread_ids: Sequence[str],
+        *,
+        strategy: str = "keep_latest",
+    ) -> None:
+        """Prune checkpoints for the given threads.
+
+        See `PostgresSaver.prune` for what each strategy keeps.
+
+        Args:
+            thread_ids: The thread IDs to prune.
+            strategy: `"keep_latest"` or `"delete"`.
+        """
+        try:
+            if asyncio.get_running_loop() is self.loop:
+                raise asyncio.InvalidStateError(
+                    "Synchronous calls to AsyncPostgresSaver are only allowed from a "
+                    "different thread. From the main thread, use the async interface. "
+                    "For example, use `await checkpointer.aprune(...)`."
+                )
+        except RuntimeError:
+            pass
+        return asyncio.run_coroutine_threadsafe(
+            self.aprune(thread_ids, strategy=strategy), self.loop
+        ).result()
+
+    def get_delta_channel_history(
+        self, *, config: RunnableConfig, channels: Sequence[str]
+    ) -> Mapping[str, DeltaChannelHistory]:
+        """Sync bridge to `aget_delta_channel_history`, guarded like `get_tuple`."""
+        try:
+            if asyncio.get_running_loop() is self.loop:
+                raise asyncio.InvalidStateError(
+                    "Synchronous calls to AsyncPostgresSaver are only allowed from a "
+                    "different thread. From the main thread, use the async interface. "
+                    "For example, use `await checkpointer.aget_delta_channel_history(...)`."
+                )
+        except RuntimeError:
+            pass
+        return asyncio.run_coroutine_threadsafe(
+            self.aget_delta_channel_history(config=config, channels=channels),
+            self.loop,
+        ).result()
+
 
 __all__ = ["AsyncPostgresSaver", "AsyncShallowPostgresSaver", "Conn"]

libs/checkpoint-postgres/langgraph/checkpoint/postgres/base.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import random
 import warnings
-from collections.abc import Mapping, Sequence
+from collections.abc import Generator, Mapping, Sequence
 from importlib.metadata import version as get_version
 from typing import Any, TypedDict, cast
 
@@ -14,8 +14,11 @@ from langgraph.checkpoint.base import (
     DeltaChannelHistory,
     PendingWrite,
     get_checkpoint_id,
+    writes_sort_key,
 )
 from langgraph.checkpoint.serde.types import TASKS
+from psycopg import AsyncCursor, Cursor
+from psycopg.rows import DictRow
 from psycopg.types.json import Jsonb
 
 # Page size for stage-1 paged scan in `get_delta_channel_history`. Internal
@@ -109,7 +112,7 @@ select
     ) as channel_values,
     (
         select
-        array_agg(array[cw.task_id::text::bytea, cw.channel::bytea, cw.type::bytea, cw.blob] order by cw.task_id, cw.idx)
+        array_agg(array[cw.task_id::text::bytea, cw.channel::bytea, cw.type::bytea, cw.blob, convert_to(cw.task_path, 'UTF8'), cw.idx::text::bytea])
         from checkpoint_writes cw
         where cw.thread_id = checkpoints.thread_id
             and cw.checkpoint_ns = checkpoints.checkpoint_ns
@@ -159,6 +162,218 @@ INSERT_CHECKPOINT_WRITES_SQL = """
 """
 
 
+PRUNE_STRATEGIES = ("keep_latest", "delete")
+
+PRUNE_DELETE_THREADS_SQL = (
+    "DELETE FROM checkpoints WHERE thread_id = ANY(%s)",
+    "DELETE FROM checkpoint_blobs WHERE thread_id = ANY(%s)",
+    "DELETE FROM checkpoint_writes WHERE thread_id = ANY(%s)",
+)
+
+# The prune statements below never join two sets of a thread's rows: a join is
+# planned from per-thread row estimates, which are worst for the few huge
+# threads worth pruning, and can go quadratic. They look rows up by primary key
+# instead (`LATERAL ... LIMIT 1`, `= ANY`).
+
+# A `DeltaChannel` leaves update counters in checkpoint metadata, or a
+# snapshot: an inline `true` marker with a blob behind it, which a plain `True`
+# value never has. LangGraph.js inlines no values, but marks the threads its
+# DeltaChannel graphs start with `delta_writes_versioned`.
+PRUNE_DELTA_THREADS_SQL = """
+SELECT thread_id FROM checkpoints
+WHERE thread_id = ANY(%s) AND (
+    metadata ? 'counters_since_delta_snapshot'
+    OR metadata ? 'delta_writes_versioned'
+)
+UNION
+SELECT c.thread_id
+FROM checkpoints c
+CROSS JOIN LATERAL jsonb_each(c.checkpoint -> 'channel_values') AS v
+CROSS JOIN LATERAL (
+    SELECT 1 FROM checkpoint_blobs b
+    WHERE b.thread_id = c.thread_id
+    AND b.checkpoint_ns = c.checkpoint_ns
+    AND b.channel = v.key
+    AND b.version = c.checkpoint -> 'channel_versions' ->> v.key
+    LIMIT 1
+) AS snapshot
+WHERE c.thread_id = ANY(%s) AND v.value = 'true'::jsonb
+"""
+
+# Per namespace: the latest checkpoint, the parent it reads its pending sends
+# from when it predates v4, and the root graph's checkpoint its subgraph call
+# started from, with whether that one is saved.
+PRUNE_HEADS_SQL = f"""
+SELECT
+    h.checkpoint_ns,
+    h.checkpoint_id AS head,
+    CASE WHEN (c.checkpoint ->> 'v')::int < 4 AND EXISTS (
+        SELECT 1 FROM checkpoint_writes w
+        WHERE w.thread_id = %s
+        AND w.checkpoint_ns = h.checkpoint_ns
+        AND w.checkpoint_id = c.parent_checkpoint_id
+        AND w.channel = '{TASKS}'
+    ) THEN c.parent_checkpoint_id END AS sends_parent,
+    c.metadata -> 'parents' ->> '' AS root,
+    EXISTS (
+        SELECT 1 FROM checkpoints r
+        WHERE r.thread_id = %s AND r.checkpoint_ns = ''
+        AND r.checkpoint_id = c.metadata -> 'parents' ->> ''
+    ) AS root_saved
+FROM (
+    SELECT DISTINCT ON (checkpoint_ns) checkpoint_ns, checkpoint_id
+    FROM checkpoints
+    WHERE thread_id = %s
+    ORDER BY checkpoint_ns DESC, checkpoint_id DESC
+) AS h
+CROSS JOIN LATERAL (
+    SELECT checkpoint, parent_checkpoint_id, metadata FROM checkpoints
+    WHERE thread_id = %s
+    AND checkpoint_ns = h.checkpoint_ns
+    AND checkpoint_id = h.checkpoint_id
+) AS c
+"""
+
+PRUNE_SNAPSHOT_SQL = "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ"
+
+PRUNE_UNKEPT_SQL = """
+SELECT checkpoint_id FROM checkpoints
+WHERE thread_id = %s AND checkpoint_ns = %s AND checkpoint_id <> ALL(%s)
+"""
+
+# A run saves a superstep's writes in the background, where they can commit
+# before their checkpoint does, so they go by the checkpoints deleted.
+PRUNE_WRITES_SQL = """
+DELETE FROM checkpoint_writes
+WHERE thread_id = %s AND checkpoint_ns = %s AND checkpoint_id = ANY(%s)
+"""
+
+PRUNE_CHECKPOINTS_SQL = """
+WITH deleted AS (
+    DELETE FROM checkpoints
+    WHERE thread_id = %s AND checkpoint_ns = %s AND checkpoint_id <> ALL(%s)
+    RETURNING checkpoint -> 'channel_versions' AS versions
+)
+SELECT DISTINCT v.key AS channel, v.value AS version
+FROM deleted
+CROSS JOIN LATERAL jsonb_each_text(deleted.versions) AS v
+"""
+
+PRUNE_PARENTS_SQL = """
+UPDATE checkpoints SET parent_checkpoint_id = NULL
+WHERE thread_id = %s AND checkpoint_ns = %s
+AND checkpoint_id = ANY(%s) AND parent_checkpoint_id <> ALL(%s)
+"""
+
+PRUNE_REFERENCED_BLOBS_SQL = """
+SELECT DISTINCT v.key AS channel, v.value AS version
+FROM checkpoints c
+CROSS JOIN LATERAL jsonb_each_text(c.checkpoint -> 'channel_versions') AS v
+WHERE c.thread_id = %s AND c.checkpoint_ns = %s
+"""
+
+PRUNE_BLOBS_SQL = """
+DELETE FROM checkpoint_blobs
+WHERE thread_id = %s AND checkpoint_ns = %s AND channel = %s AND version = ANY(%s)
+"""
+
+PRUNE_SUBGRAPH_CALLS_SQL = (
+    "DELETE FROM checkpoints WHERE thread_id = %s AND checkpoint_ns = ANY(%s)",
+    "DELETE FROM checkpoint_writes WHERE thread_id = %s AND checkpoint_ns = ANY(%s)",
+    "DELETE FROM checkpoint_blobs WHERE thread_id = %s AND checkpoint_ns = ANY(%s)",
+)
+
+
+def _garbage_blobs(
+    freed: Sequence[Mapping[str, Any]], referenced: Sequence[Mapping[str, Any]]
+) -> dict[str, list[str]]:
+    """Blobs a deleted checkpoint used and no kept one does, by channel."""
+    kept = {(r["channel"], r["version"]) for r in referenced}
+    garbage: dict[str, list[str]] = {}
+    for r in freed:
+        if (r["channel"], r["version"]) not in kept:
+            garbage.setdefault(r["channel"], []).append(r["version"])
+    return garbage
+
+
+_Statements = Generator[tuple[str, Sequence[Any], bool], list[DictRow], None]
+
+
+def _refuse_delta_threads(thread_ids: Sequence[str]) -> _Statements:
+    rows = yield PRUNE_DELTA_THREADS_SQL, (thread_ids, thread_ids), True
+    if delta := sorted(r["thread_id"] for r in rows):
+        raise NotImplementedError(
+            f"keep_latest can't prune threads that use a DeltaChannel: {', '.join(delta)}"
+        )
+
+
+def _keep_latest(thread_id: str) -> _Statements:
+    """The statements of one thread's keep_latest transaction, for `_execute`
+    and `_aexecute` to run. Each comes with whether its rows are sent back.
+
+    They all read one snapshot, so what a run saves meanwhile is neither seen
+    nor deleted, whatever its checkpoint ID.
+    """
+    yield PRUNE_SNAPSHOT_SQL, (), False
+    heads = yield PRUNE_HEADS_SQL, (thread_id,) * 4, True
+    # Catches a thread that started using a DeltaChannel after the batch check.
+    yield from _refuse_delta_threads([thread_id])
+    kept = {
+        h["checkpoint_ns"]: [i for i in (h["head"], h["sends_parent"]) if i]
+        for h in heads
+    }
+    # A subgraph call's namespace has its task ID after a ":", unlike a
+    # `checkpointer=True` subgraph's, whose state outlives each call. A call
+    # goes with the root checkpoint it started from, but only once that one is
+    # saved: runs save in the background, so a call can commit first.
+    calls = {
+        h["checkpoint_ns"]
+        for h in heads
+        if ":" in h["checkpoint_ns"]
+        and h["root_saved"]
+        and h["root"] not in kept.get("", ())
+    }
+    if calls:
+        for sql in PRUNE_SUBGRAPH_CALLS_SQL:
+            yield sql, (thread_id, list(calls)), False
+    for ns, ids in kept.items():
+        if ns in calls:
+            continue
+        unkept = yield PRUNE_UNKEPT_SQL, (thread_id, ns, ids), True
+        if unkept:
+            deleted = [r["checkpoint_id"] for r in unkept]
+            yield PRUNE_WRITES_SQL, (thread_id, ns, deleted), False
+        freed = yield PRUNE_CHECKPOINTS_SQL, (thread_id, ns, ids), True
+        yield PRUNE_PARENTS_SQL, (thread_id, ns, ids, ids), False
+        if freed:
+            referenced = yield PRUNE_REFERENCED_BLOBS_SQL, (thread_id, ns), True
+            for channel, versions in _garbage_blobs(freed, referenced).items():
+                yield PRUNE_BLOBS_SQL, (thread_id, ns, channel, versions), False
+
+
+# Unprepared, so Postgres plans each statement knowing its arrays: a cached
+# generic plan checks a row against an `= ANY(...)` array one element at a time.
+def _execute(cur: Cursor[DictRow], statements: _Statements) -> None:
+    try:
+        sql, params, fetch = next(statements)
+        while True:
+            cur.execute(sql, params, prepare=False)
+            sql, params, fetch = statements.send(cur.fetchall() if fetch else [])
+    except StopIteration:
+        pass
+
+
+async def _aexecute(cur: AsyncCursor[DictRow], statements: _Statements) -> None:
+    try:
+        sql, params, fetch = next(statements)
+        while True:
+            await cur.execute(sql, params, prepare=False)
+            rows = await cur.fetchall() if fetch else []
+            sql, params, fetch = statements.send(rows)
+    except StopIteration:
+        pass
+
+
 class _DeltaStage2Row(TypedDict, total=False):
     """One row from `_build_delta_stage2_sql` (a UNION ALL of writes and blobs)."""
 
@@ -168,40 +383,22 @@ class _DeltaStage2Row(TypedDict, total=False):
     type: str | None
     blob: bytes | None
     task_id: str | None  # "w" rows only
+    task_path: str | None  # "w" rows only
     idx: int | None  # "w" rows only
     version: str | None  # "b" rows only
 
 
-# Multi-channel two-stage DeltaChannel reconstruction.
-#
-# Stage 1 scans checkpoint metadata (no blob bytes) and emits one row per
-# checkpoint with K parallel JSONB key lookups (one column pair per
-# requested delta channel: ver_i / hs_i).  No subqueries, no aggregation.
-# Python walks the parent chain once across all channels.
-#
-# Stage 2 fetches all writes and the seed blobs for ALL channels in a
-# single roundtrip via `channel = ANY(%s)` and chain/seed-version
-# filtering.
-#
-# Empirical comparison vs an alternative "ship full channel_versions /
-# channel_values JSONB and let Python pick" form (1000 checkpoints,
-# 8 total channels in graph, 3 delta channels requested):
-#
-#   Postgres execution:    A=0.24ms vs B=0.38ms   (both negligible)
-#   End-to-end latency:    A=6.83ms vs B=2.28ms   (B is 3.0x faster)
-#   Wire payload:          A=836KB  vs B=330KB    (61% smaller)
-#   Buffer hits:           identical (167 blocks)
-#
-# B (this dynamic-columns design) wins because it avoids JSONB
-# serialization on the wire and JSONB-to-dict deserialization in
-# psycopg.  Even at K=8 (8 delta channels = 16 dynamic columns), B
-# still beats A end-to-end (4.2ms vs 6.8ms).
+# Delta history is rebuilt in two queries; `_build_delta_stage1_sql` and
+# `_build_delta_stage2_sql` document their shapes.
 
 
-def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
+def _build_delta_stage1_sql(
+    channels: Sequence[str], *, paged: bool, include_cursor: bool = False
+) -> str:
     """Build stage 1 SQL with K parallel version lookups + seed probes.
 
-    For channels=["messages", "files"] (with `paged=True`) the result is::
+    For channels=["messages", "files"] (with `paged=True, include_cursor=True`)
+    the result is::
 
         SELECT checkpoint_id, parent_checkpoint_id,
                checkpoint -> 'channel_versions' ->> %s AS ver_0,
@@ -217,7 +414,7 @@ def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
                checkpoint -> 'channel_values' -> %s AS inline_1
         FROM checkpoints
         WHERE thread_id = %s AND checkpoint_ns = %s
-          AND (%s::text IS NULL OR checkpoint_id < %s)
+          AND checkpoint_id <= %s
         ORDER BY checkpoint_id DESC
         LIMIT %s
 
@@ -258,9 +455,16 @@ def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
     and uses safe identifiers).
 
     Caller must extend params with `[ch_0 x4, ch_1 x4, ..., thread_id, ns,
-    cursor, cursor, page_size]` when `paged=True` — four per channel: the
-    version lookup, the blob's channel, the version the blob must match, and the
-    inline lookup.
+    cursor, page_size]` when `paged=True` — four per channel: the version
+    lookup, the blob's channel, the version the blob must match, and the inline
+    lookup.
+
+    Pages run newest-first from the target down. The first page passes the
+    target as the cursor with `include_cursor=True`, so it opens with the
+    target's own row, whose parent starts the walk; each later page continues
+    below the oldest row read. A checkpoint's ancestors have smaller ids (uuid6
+    is time-ordered, which `get_tuple` also relies on to find the latest
+    checkpoint), so no row newer than the target is part of its chain.
 
     When `paged=False`, the WHERE has no cursor predicate and there's no
     LIMIT/ORDER BY — kept as a non-public helper for tests/diagnostics.
@@ -284,7 +488,7 @@ def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
     )
     if paged:
         sql += (
-            " AND (%s::text IS NULL OR checkpoint_id < %s)"
+            f" AND checkpoint_id {'<=' if include_cursor else '<'} %s"
             " ORDER BY checkpoint_id DESC LIMIT %s"
         )
     return sql
@@ -319,7 +523,7 @@ def _build_delta_stage2_sql(
         branches.append(
             "SELECT 'w'::text AS _kind, "
             "checkpoint_id, channel, "
-            "type, blob, task_id, idx, NULL::text AS version "
+            "type, blob, task_id, task_path, idx, NULL::text AS version "
             "FROM checkpoint_writes "
             "WHERE thread_id = %s AND checkpoint_ns = %s AND channel = %s "
             "AND checkpoint_id = ANY(%s)"
@@ -327,7 +531,8 @@ def _build_delta_stage2_sql(
     for _ in channels_with_seed:
         branches.append(
             "SELECT 'b'::text AS _kind, NULL::text AS checkpoint_id, channel, "
-            "type, blob, NULL::text AS task_id, NULL::int AS idx, version "
+            "type, blob, NULL::text AS task_id, NULL::text AS task_path, "
+            "NULL::int AS idx, version "
             "FROM checkpoint_blobs "
             "WHERE thread_id = %s AND checkpoint_ns = %s AND channel = %s "
             "AND version = %s"
@@ -335,10 +540,8 @@ def _build_delta_stage2_sql(
     return " UNION ALL ".join(branches)
 
 
-# Stage 1 rows are dynamic-shape dicts: {checkpoint_id, parent_checkpoint_id,
-# ver_0, hs_0, ver_1, hs_1, ...}.  Walking is parameterized by the channel
-# list to map indices back to channel names — no static TypedDict here.
-# `dict[str, Any]` is the practical signature.
+# Stage 1 rows are dicts keyed by the per-channel aliases
+# `_build_delta_stage1_sql` emits, so there is no static TypedDict.
 
 
 class BasePostgresSaver(BaseCheckpointSaver[str]):
@@ -431,9 +634,11 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
           (a) it found a stored value for its channel — a blob or an inline
               primitive (channel becomes seeded),
           (b) it reached a real root (parent_of[cid] is None — fully
-              materialized at this point), or
+              materialized at this point),
           (c) the next ancestor cid isn't in `parent_of` yet (waiting for
-              a later page; the cursor stays put).
+              a later page; the cursor stays put), or
+          (d) the target's own row isn't in `parent_of` (the target doesn't
+              exist, so the walk never starts).
 
         Mutates `chain_by_ch`, `seed_ver_by_ch`, `seed_inline_by_ch`,
         `walk_cursor_by_ch`, and `seeded` in place.
@@ -441,9 +646,13 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         for i, ch in enumerate(channels):
             if ch in seeded:
                 continue
-            # First-time entry: cursor starts at the target's parent.
+            # The first page opens with the target's row, so it's missing only
+            # when the target doesn't exist; a `None` cursor would read as
+            # "target is a root".
             if ch not in walk_cursor_by_ch:
-                walk_cursor_by_ch[ch] = parent_of.get(target_id)
+                if target_id not in parent_of:
+                    continue
+                walk_cursor_by_ch[ch] = parent_of[target_id]
             cur_cid = walk_cursor_by_ch[ch]
             ch_chain = chain_by_ch[ch]
             hb_i = hb_by_i_by_cid[i]
@@ -492,10 +701,11 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         stored value, or when the seed blob is sentinel "empty" — in both cases
         the consumer treats absence as "start empty".
         """
-        # writes_by_ch_by_cid[channel][cid] = list of (type, blob, task_id, idx)
-        writes_by_ch_by_cid: dict[str, dict[str, list[tuple[str, bytes, str, int]]]] = {
-            ch: {} for ch in channels
-        }
+        # writes_by_ch_by_cid[channel][cid] = list of
+        # (type, blob, task_id, idx, task_path)
+        writes_by_ch_by_cid: dict[
+            str, dict[str, list[tuple[str, bytes, str, int, str]]]
+        ] = {ch: {} for ch in channels}
         # seed_blob_by_ver[(channel, version)] = (type, blob)
         seed_blob_by_ver: dict[tuple[str, str], tuple[str, bytes]] = {}
 
@@ -506,8 +716,14 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
                 cid = cast(str, r["checkpoint_id"])
                 writes_by_ch_by_cid.setdefault(ch, {}).setdefault(cid, []).append(
                     cast(
-                        "tuple[str, bytes, str, int]",
-                        (r["type"], r["blob"], r["task_id"], r["idx"]),
+                        "tuple[str, bytes, str, int, str]",
+                        (
+                            r["type"],
+                            r["blob"],
+                            r["task_id"],
+                            r["idx"],
+                            r["task_path"],
+                        ),
                     )
                 )
             else:  # kind == "b"
@@ -516,10 +732,10 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
                     "tuple[str, bytes]", (r["type"], r["blob"])
                 )
 
-        # Sort writes per (channel, cid) newest-first by (task_id, idx)
+        # Sort writes per (channel, cid) newest-first
         for cid_map in writes_by_ch_by_cid.values():
             for ws in cid_map.values():
-                ws.sort(key=lambda w: (w[2], w[3]), reverse=True)
+                ws.sort(key=lambda w: writes_sort_key(w[4], w[2], w[3]), reverse=True)
 
         result: dict[str, DeltaChannelHistory] = {}
         for ch in channels:
@@ -529,7 +745,9 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
             collected: list[PendingWrite] = []
             cid_writes = writes_by_ch_by_cid.get(ch, {})
             for cid in chain_cids:
-                for type_tag, write_blob, task_id, _idx in cid_writes.get(cid, []):
+                for type_tag, write_blob, task_id, _idx, _path in cid_writes.get(
+                    cid, []
+                ):
                     val = self.serde.loads_typed((type_tag, write_blob))
                     collected.append((task_id, ch, val))
             collected.reverse()
@@ -572,20 +790,15 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         ]
 
     def _load_writes(
-        self, writes: list[tuple[bytes, bytes, bytes, bytes]]
+        self, writes: list[tuple[bytes, bytes, bytes, bytes, bytes, bytes]] | None
     ) -> list[tuple[str, str, Any]]:
-        return (
-            [
-                (
-                    tid.decode(),
-                    channel.decode(),
-                    self.serde.loads_typed((t.decode(), v)),
-                )
-                for tid, channel, t, v in writes
-            ]
-            if writes
-            else []
-        )
+        return [
+            (tid.decode(), channel.decode(), self.serde.loads_typed((t.decode(), v)))
+            for tid, channel, t, v, _, _ in sorted(
+                writes or [],
+                key=lambda w: writes_sort_key(w[4].decode(), w[0].decode(), int(w[5])),
+            )
+        ]
 
     def _dump_writes(
         self,

libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py

@@ -97,7 +97,7 @@ select
     ) as channel_values,
     (
         select
-        array_agg(array[cw.task_id::text::bytea, cw.channel::bytea, cw.type::bytea, cw.blob] order by cw.task_id, cw.idx)
+        array_agg(array[cw.task_id::text::bytea, cw.channel::bytea, cw.type::bytea, cw.blob, convert_to(cw.task_path, 'UTF8'), cw.idx::text::bytea])
         from checkpoint_writes cw
         where cw.thread_id = checkpoints.thread_id
             and cw.checkpoint_ns = checkpoints.checkpoint_ns

libs/checkpoint-postgres/langgraph/store/postgres/base.py

@@ -7,7 +7,7 @@ import logging
 import re
 import threading
 from collections import defaultdict
-from collections.abc import Callable, Iterable, Iterator, Sequence
+from collections.abc import Callable, Iterable, Iterator, Mapping, Sequence
 from contextlib import contextmanager
 from datetime import datetime
 from typing import (
@@ -36,6 +36,7 @@ from langgraph.store.base import (
     ensure_embeddings,
     get_text_at_path,
     tokenize_path,
+    validate_op_namespace,
 )
 from psycopg import Capabilities, Connection, Cursor, Pipeline
 from psycopg.rows import DictRow, dict_row
@@ -354,7 +355,7 @@ class BasePostgresStore(Generic[C]):
                     (
                         _namespace_to_text(op.namespace),
                         op.key,
-                        Jsonb(cast(dict, op.value)),
+                        Jsonb(dict(cast(Mapping[str, Any], op.value))),
                     )
                 )
                 if op.ttl is not None:
@@ -1386,6 +1387,7 @@ def _group_ops(ops: Iterable[Op]) -> tuple[dict[type, list[tuple[int, Op]]], int
     grouped_ops: dict[type, list[tuple[int, Op]]] = defaultdict(list)
     tot = 0
     for idx, op in enumerate(ops):
+        validate_op_namespace(op)
         grouped_ops[type(op)].append((idx, op))
         tot += 1
     return grouped_ops, tot

libs/checkpoint-postgres/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-postgres"
-version = "3.1.2"
+version = "3.2.0"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-  "langgraph-checkpoint>=4.1.0,<5.0.0",
+  "langgraph-checkpoint>=4.3.0,<5.0.0",
   "orjson>=3.11.5",
   "psycopg>=3.2.0",
   "psycopg-pool>=3.2.0",

libs/checkpoint-postgres/tests/test_async_store.py

@@ -13,8 +13,10 @@ import pytest
 from langchain_core.embeddings import Embeddings
 from langgraph.store.base import (
     GetOp,
+    InvalidNamespaceError,
     Item,
     ListNamespacesOp,
+    MatchCondition,
     PutOp,
     SearchOp,
 )
@@ -871,3 +873,65 @@ async def test_omit_expired_search_pagination(store: AsyncPostgresStore) -> None
     page2 = await store.asearch(ns, limit=2, offset=2)
     assert [i.key for i in page1] == ["a", "b"]
     assert [i.key for i in page2] == ["c"]
+
+
+@pytest.mark.parametrize("namespace", [("foo.bar",), ("foo", ""), ("foo", 1)])
+async def test_abatch_rejects_invalid_namespace_labels(
+    store: AsyncPostgresStore, namespace: tuple
+) -> None:
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    for op in (
+        GetOp(namespace, "key"),
+        GetOp(namespace, "key", refresh_ttl=True),
+        PutOp(namespace, "key", {"changed": True}),
+        PutOp(namespace, "key", None),
+        SearchOp(namespace),
+        ListNamespacesOp((MatchCondition("prefix", namespace),)),
+        ListNamespacesOp((MatchCondition("suffix", namespace),)),
+    ):
+        with pytest.raises(InvalidNamespaceError):
+            await store.abatch([op])
+
+    item = await store.aget(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}
+
+
+async def test_invalid_namespace_only_fails_its_own_call(
+    store: AsyncPostgresStore,
+) -> None:
+    """Concurrent calls share one `abatch`, which fails every op if it raises.
+
+    Labels are checked before an op is queued, so one caller's bad label cannot
+    fail another caller's request.
+    """
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    valid, invalid = await asyncio.gather(
+        store.aget(("foo", "bar"), "key"),
+        store.aget(("foo.bar",), "key"),
+        return_exceptions=True,
+    )
+
+    assert isinstance(valid, Item) and valid.value == {"original": True}
+    assert isinstance(invalid, InvalidNamespaceError)
+
+
+async def test_sync_methods_reject_invalid_namespace_labels(
+    store: AsyncPostgresStore,
+) -> None:
+    """The sync wrappers run off the event loop thread and must validate too."""
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    for call in (
+        lambda: store.get(("foo.bar",), "key"),
+        lambda: store.search(("foo.bar",)),
+        lambda: store.delete(("foo.bar",), "key"),
+        lambda: store.list_namespaces(prefix=("foo.bar",)),
+        lambda: store.batch([GetOp(("foo.bar",), "key")]),
+    ):
+        with pytest.raises(InvalidNamespaceError):
+            await asyncio.to_thread(call)
+
+    item = await store.aget(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}

libs/checkpoint-postgres/tests/test_delta_pagination.py

@@ -0,0 +1,211 @@
+from __future__ import annotations
+
+from collections.abc import Mapping, Sequence
+from typing import Any
+from uuid import uuid4
+
+import pytest
+from langgraph.checkpoint.base import (
+    Checkpoint,
+    DeltaChannelHistory,
+    empty_checkpoint,
+)
+from langgraph.checkpoint.base.id import uuid6
+from langgraph.checkpoint.serde.types import _DeltaSnapshot
+
+from langgraph.checkpoint.postgres import PostgresSaver
+from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
+from langgraph.checkpoint.postgres.base import _DELTA_PAGE_SIZE, BasePostgresSaver
+from tests.conftest import DEFAULT_URI
+
+CHANNEL = "items"
+STEPS = 8
+SEED_STEP = 1
+SEED_VALUE = [10, 20]
+TARGET_STEP = 4
+
+# The real page size is the control; the rest split the walk from the target
+# to its seed across pages.
+PAGE_SIZES = [_DELTA_PAGE_SIZE, 3, 2, 1]
+
+
+def _step_args(
+    thread_id: str, step: int, parent: dict | None
+) -> tuple[dict, Checkpoint, dict[str, Any]]:
+    config: dict = {"configurable": {"thread_id": thread_id, "checkpoint_ns": ""}}
+    if parent is not None:
+        config["configurable"]["checkpoint_id"] = parent["configurable"][
+            "checkpoint_id"
+        ]
+    checkpoint: Checkpoint = empty_checkpoint()
+    checkpoint["id"] = str(uuid6(clock_seq=step))
+    checkpoint["channel_versions"][CHANNEL] = f"v{step}"
+    if step == SEED_STEP:
+        checkpoint["channel_values"][CHANNEL] = _DeltaSnapshot(list(SEED_VALUE))
+        return config, checkpoint, {CHANNEL: f"v{step}"}
+    return config, checkpoint, {}
+
+
+async def _abuild_chain(saver: AsyncPostgresSaver) -> list[dict]:
+    thread_id = str(uuid4())
+    parent: dict | None = None
+    configs: list[dict] = []
+    for step in range(STEPS):
+        config, checkpoint, new_versions = _step_args(thread_id, step, parent)
+        parent = await saver.aput(
+            config,
+            checkpoint,
+            {"source": "loop", "step": step, "parents": {}},
+            new_versions,
+        )
+        await saver.aput_writes(parent, [(CHANNEL, f"w{step}")], str(uuid4()))
+        configs.append(parent)
+    return configs
+
+
+def _build_chain(saver: PostgresSaver) -> list[dict]:
+    thread_id = str(uuid4())
+    parent: dict | None = None
+    configs: list[dict] = []
+    for step in range(STEPS):
+        config, checkpoint, new_versions = _step_args(thread_id, step, parent)
+        parent = saver.put(
+            config,
+            checkpoint,
+            {"source": "loop", "step": step, "parents": {}},
+            new_versions,
+        )
+        saver.put_writes(parent, [(CHANNEL, f"w{step}")], str(uuid4()))
+        configs.append(parent)
+    return configs
+
+
+def _assert_history(entry: DeltaChannelHistory, page_size: int) -> None:
+    seed = entry.get("seed")
+    assert isinstance(seed, _DeltaSnapshot), (
+        f"page_size={page_size}: expected a snapshot seed, "
+        f"got {entry.get('seed', '<missing>')!r}"
+    )
+    assert seed.value == SEED_VALUE
+    assert [w[2] for w in entry["writes"]] == ["w1", "w2", "w3"], (
+        f"page_size={page_size}: got {[w[2] for w in entry['writes']]}"
+    )
+
+
+@pytest.mark.parametrize("page_size", PAGE_SIZES)
+async def test_async_walk_continues_across_pages(
+    page_size: int, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr("langgraph.checkpoint.postgres.aio._DELTA_PAGE_SIZE", page_size)
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        configs = await _abuild_chain(saver)
+        result = await saver.aget_delta_channel_history(
+            config=configs[TARGET_STEP], channels=[CHANNEL]
+        )
+        _assert_history(result[CHANNEL], page_size)
+
+
+@pytest.mark.parametrize("page_size", PAGE_SIZES)
+def test_sync_walk_continues_across_pages(
+    page_size: int, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr("langgraph.checkpoint.postgres._DELTA_PAGE_SIZE", page_size)
+    with PostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        saver.setup()
+        configs = _build_chain(saver)
+        result = saver.get_delta_channel_history(
+            config=configs[TARGET_STEP], channels=[CHANNEL]
+        )
+        _assert_history(result[CHANNEL], page_size)
+
+
+def _record_rows_read(monkeypatch: pytest.MonkeyPatch) -> list[str]:
+    read: list[str] = []
+    ingest = BasePostgresSaver._ingest_stage1_page
+
+    def record(rows: Sequence[Mapping[str, Any]], *args: Any) -> str | None:
+        read.extend(row["checkpoint_id"] for row in rows)
+        return ingest(rows, *args)
+
+    monkeypatch.setattr(BasePostgresSaver, "_ingest_stage1_page", staticmethod(record))
+    return read
+
+
+def _ids_from_target_down(configs: list[dict]) -> list[str]:
+    return [c["configurable"]["checkpoint_id"] for c in configs[TARGET_STEP::-1]]
+
+
+async def test_async_walk_reads_nothing_newer_than_the_target(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    read = _record_rows_read(monkeypatch)
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        configs = await _abuild_chain(saver)
+        result = await saver.aget_delta_channel_history(
+            config=configs[TARGET_STEP], channels=[CHANNEL]
+        )
+    _assert_history(result[CHANNEL], _DELTA_PAGE_SIZE)
+    assert read == _ids_from_target_down(configs)
+
+
+def test_sync_walk_reads_nothing_newer_than_the_target(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    read = _record_rows_read(monkeypatch)
+    with PostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        saver.setup()
+        configs = _build_chain(saver)
+        result = saver.get_delta_channel_history(
+            config=configs[TARGET_STEP], channels=[CHANNEL]
+        )
+    _assert_history(result[CHANNEL], _DELTA_PAGE_SIZE)
+    assert read == _ids_from_target_down(configs)
+
+
+def _empty_checkpoint_id(config: dict) -> dict:
+    return {"configurable": {**config["configurable"], "checkpoint_id": ""}}
+
+
+async def test_async_empty_checkpoint_id_reads_from_the_latest_checkpoint() -> None:
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        configs = await _abuild_chain(saver)
+        latest = await saver.aget_delta_channel_history(
+            config=configs[-1], channels=[CHANNEL]
+        )
+
+        result = await saver.aget_delta_channel_history(
+            config=_empty_checkpoint_id(configs[-1]), channels=[CHANNEL]
+        )
+
+    assert latest[CHANNEL]["writes"]
+    assert result == latest
+
+
+def test_sync_empty_checkpoint_id_reads_from_the_latest_checkpoint() -> None:
+    with PostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        saver.setup()
+        configs = _build_chain(saver)
+        latest = saver.get_delta_channel_history(config=configs[-1], channels=[CHANNEL])
+
+        result = saver.get_delta_channel_history(
+            config=_empty_checkpoint_id(configs[-1]), channels=[CHANNEL]
+        )
+
+    assert latest[CHANNEL]["writes"]
+    assert result == latest
+
+
+async def test_root_target_has_no_history_and_still_terminates(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr("langgraph.checkpoint.postgres.aio._DELTA_PAGE_SIZE", 1)
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        configs = await _abuild_chain(saver)
+        result = await saver.aget_delta_channel_history(
+            config=configs[0], channels=[CHANNEL]
+        )
+        assert result[CHANNEL] == {"writes": []}

libs/checkpoint-postgres/tests/test_prune.py

@@ -0,0 +1,540 @@
+import asyncio
+from collections.abc import Awaitable, Callable
+from contextlib import asynccontextmanager
+from typing import Any
+from uuid import uuid4
+
+import pytest
+from langgraph.checkpoint.base import empty_checkpoint
+from langgraph.checkpoint.base.id import uuid6
+from langgraph.checkpoint.conformance import validate
+from langgraph.checkpoint.conformance.initializer import checkpointer_test
+from langgraph.checkpoint.serde.types import TASKS, _DeltaSnapshot
+from psycopg import AsyncConnection
+
+from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
+from langgraph.checkpoint.postgres.base import (
+    PRUNE_DELTA_THREADS_SQL,
+    PRUNE_HEADS_SQL,
+    PRUNE_REFERENCED_BLOBS_SQL,
+)
+from tests.conftest import DEFAULT_POSTGRES_URI, DEFAULT_URI
+from tests.test_async import _saver as _async_saver
+from tests.test_sync import _saver as _sync_saver
+
+SAVERS = ["base", "pool", "pipe", "aio_base", "aio_pool", "aio_pipe"]
+
+
+@asynccontextmanager
+async def _saver(name: str):
+    if name.startswith("aio_"):
+        async with _async_saver(name.removeprefix("aio_")) as saver:
+            yield saver
+    else:
+        with _sync_saver(name) as saver:
+            yield saver
+
+
+async def _call(saver: Any, method: str, *args: Any, **kwargs: Any) -> Any:
+    if isinstance(saver, AsyncPostgresSaver):
+        return await getattr(saver, f"a{method}")(*args, **kwargs)
+    return getattr(saver, method)(*args, **kwargs)
+
+
+async def _rows(saver: Any, thread_id: str) -> dict[str, list[tuple]]:
+    queries = {
+        "checkpoints": "SELECT checkpoint_ns, checkpoint_id FROM checkpoints"
+        " WHERE thread_id = %s ORDER BY 1, 2",
+        "writes": "SELECT checkpoint_ns, checkpoint_id, task_id, idx"
+        " FROM checkpoint_writes WHERE thread_id = %s ORDER BY 1, 2, 3, 4",
+        "blobs": "SELECT checkpoint_ns, channel, version FROM checkpoint_blobs"
+        " WHERE thread_id = %s ORDER BY 1, 2, 3",
+    }
+    rows = {}
+    for table, sql in queries.items():
+        if isinstance(saver, AsyncPostgresSaver):
+            async with saver._cursor() as cur:
+                await cur.execute(sql, (thread_id,))
+                rows[table] = [tuple(r.values()) for r in await cur.fetchall()]
+        else:
+            with saver._cursor() as cur:
+                cur.execute(sql, (thread_id,))
+                rows[table] = [tuple(r.values()) for r in cur.fetchall()]
+    return rows
+
+
+async def _put(
+    saver: Any,
+    thread_id: str,
+    parent: dict | None,
+    step: int,
+    values: dict[str, Any],
+    versions: dict[str, str],
+    *,
+    ns: str = "",
+    metadata: dict[str, Any] | None = None,
+    v: int = 4,
+    checkpoint_id: str | None = None,
+) -> dict:
+    config = {"configurable": {"thread_id": thread_id, "checkpoint_ns": ns}}
+    if parent is not None:
+        config["configurable"]["checkpoint_id"] = parent["configurable"][
+            "checkpoint_id"
+        ]
+    checkpoint = empty_checkpoint()
+    checkpoint.update(
+        v=v,
+        id=checkpoint_id or str(uuid6(clock_seq=step)),
+        channel_values=values,
+        channel_versions=versions,
+    )
+    new_versions = {k: versions[k] for k in values}
+    return await _call(
+        saver,
+        "put",
+        config,
+        checkpoint,
+        {"source": "loop", "step": step, "parents": {}, **(metadata or {})},
+        new_versions,
+    )
+
+
+async def _three_checkpoints(
+    saver: Any,
+    thread_id: str,
+    ns: str = "",
+    metadata: dict[str, Any] | None = None,
+) -> dict:
+    parent = None
+    steps = [
+        ({"a": [1], "s": ["shared"]}, {"a": "1", "s": "1"}),
+        ({"a": [1, 2]}, {"a": "2", "s": "1"}),
+        ({"a": [1, 2, 3]}, {"a": "3", "s": "1"}),
+    ]
+    for step, (values, versions) in enumerate(steps):
+        parent = await _put(
+            saver, thread_id, parent, step, values, versions, ns=ns, metadata=metadata
+        )
+        await _call(saver, "put_writes", parent, [("a", step)], str(uuid4()))
+    return parent
+
+
+@asynccontextmanager
+async def _second_saver(saver: AsyncPostgresSaver):
+    assert isinstance(saver.conn, AsyncConnection)
+    uri = DEFAULT_POSTGRES_URI + saver.conn.info.dbname
+    async with AsyncPostgresSaver.from_conn_string(uri) as other:
+        yield other
+
+
+def _run_once_after(
+    saver: AsyncPostgresSaver,
+    sql: str,
+    action: Callable[[], Awaitable[Any]],
+    *,
+    nth: int = 1,
+) -> None:
+    seen = 0
+    cursor = saver._cursor
+
+    class Hooked:
+        def __init__(self, cur: Any) -> None:
+            self.cur = cur
+
+        def __getattr__(self, name: str) -> Any:
+            return getattr(self.cur, name)
+
+        async def execute(self, query: Any, params: Any = None, **kwargs: Any) -> None:
+            nonlocal seen
+            await self.cur.execute(query, params, **kwargs)
+            if query is sql:
+                seen += 1
+                if seen == nth:
+                    await action()
+
+    @asynccontextmanager
+    async def hooked(**kwargs: Any):
+        async with cursor(**kwargs) as cur:
+            yield Hooked(cur)
+
+    saver._cursor = hooked
+
+
+async def _delta_thread(saver: Any, thread_id: str, evidence: str) -> None:
+    if evidence == "counters":
+        first = await _put(saver, thread_id, None, 0, {"m": [1]}, {"m": "1"})
+        await _put(
+            saver,
+            thread_id,
+            first,
+            1,
+            {},
+            {"m": "2"},
+            metadata={"counters_since_delta_snapshot": {"m": [1, 1]}},
+        )
+    elif evidence == "snapshot":
+        first = await _put(
+            saver, thread_id, None, 0, {"m": _DeltaSnapshot([1])}, {"m": "1"}
+        )
+        await _put(saver, thread_id, first, 1, {}, {"m": "2"})
+    else:
+        marker = {"delta_writes_versioned": True}
+        first = await _put(
+            saver, thread_id, None, 0, {"m": [1]}, {"m": "1"}, metadata=marker
+        )
+        await _put(
+            saver, thread_id, first, 1, {"m": [1, 2]}, {"m": "2"}, metadata=marker
+        )
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_keeps_each_namespace_head_with_its_writes_and_blobs(
+    name: str,
+) -> None:
+    async with _saver(name) as saver:
+        thread_id, other_id = str(uuid4()), str(uuid4())
+        heads = {
+            ns: await _three_checkpoints(saver, thread_id, ns) for ns in ("", "sub:1")
+        }
+        await _three_checkpoints(saver, other_id)
+        before = {ns: await _call(saver, "get_tuple", h) for ns, h in heads.items()}
+        other_before = await _rows(saver, other_id)
+
+        await _call(saver, "prune", [thread_id])
+
+        rows = await _rows(saver, thread_id)
+        assert rows["checkpoints"] == [
+            (ns, heads[ns]["configurable"]["checkpoint_id"]) for ns in ("", "sub:1")
+        ]
+        assert [(ns, cid) for ns, cid, *_ in rows["writes"]] == rows["checkpoints"]
+        assert rows["blobs"] == [
+            (ns, ch, ver)
+            for ns in ("", "sub:1")
+            for ch, ver in (("a", "3"), ("s", "1"))
+        ]
+        for ns, head in heads.items():
+            assert await _call(saver, "get_tuple", head) == before[ns]._replace(
+                parent_config=None
+            )
+        assert await _rows(saver, other_id) == other_before
+
+
+@pytest.mark.parametrize("evidence", ["counters", "snapshot", "versioned"])
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_refuses_a_batch_with_a_delta_channel_thread(
+    name: str, evidence: str
+) -> None:
+    async with _saver(name) as saver:
+        ordinary_id, delta_id = str(uuid4()), str(uuid4())
+        await _three_checkpoints(saver, ordinary_id)
+        await _delta_thread(saver, delta_id, evidence)
+        before = [await _rows(saver, t) for t in (ordinary_id, delta_id)]
+
+        with pytest.raises(NotImplementedError, match=delta_id):
+            await _call(saver, "prune", [ordinary_id, delta_id])
+
+        assert [await _rows(saver, t) for t in (ordinary_id, delta_id)] == before
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_prunes_a_thread_storing_a_plain_true(name: str) -> None:
+    async with _saver(name) as saver:
+        thread_id = str(uuid4())
+        first = await _put(
+            saver, thread_id, None, 0, {"flag": True, "a": [1]}, {"flag": "1", "a": "1"}
+        )
+        head = await _put(
+            saver, thread_id, first, 1, {"flag": True}, {"flag": "2", "a": "1"}
+        )
+
+        await _call(saver, "prune", [thread_id])
+
+        assert (await _rows(saver, thread_id))["checkpoints"] == [
+            ("", head["configurable"]["checkpoint_id"])
+        ]
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_keeps_the_parent_holding_a_pre_v4_heads_sends(
+    name: str,
+) -> None:
+    async with _saver(name) as saver:
+        thread_id = str(uuid4())
+        first = await _put(saver, thread_id, None, 0, {}, {}, v=1)
+        await _call(saver, "put_writes", first, [(TASKS, "send-1")], str(uuid4()))
+        second = await _put(saver, thread_id, first, 1, {}, {}, v=1)
+        head = await _put(saver, thread_id, second, 2, {}, {}, v=1)
+        await _call(saver, "put_writes", second, [(TASKS, "send-2")], str(uuid4()))
+
+        await _call(saver, "prune", [thread_id])
+
+        assert (await _rows(saver, thread_id))["checkpoints"] == [
+            ("", second["configurable"]["checkpoint_id"]),
+            ("", head["configurable"]["checkpoint_id"]),
+        ]
+        loaded = await _call(saver, "get_tuple", head)
+        assert loaded.checkpoint["channel_values"][TASKS] == ["send-2"]
+        assert loaded.parent_config == second
+        assert (await _call(saver, "get_tuple", second)).parent_config is None
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_delete_removes_every_row_of_the_threads(name: str) -> None:
+    async with _saver(name) as saver:
+        ordinary_id, delta_id, other_id = str(uuid4()), str(uuid4()), str(uuid4())
+        await _three_checkpoints(saver, ordinary_id)
+        await _delta_thread(saver, delta_id, "counters")
+        await _three_checkpoints(saver, other_id)
+        other_before = await _rows(saver, other_id)
+
+        await _call(saver, "prune", [ordinary_id, delta_id], strategy="delete")
+
+        empty = {"checkpoints": [], "writes": [], "blobs": []}
+        assert await _rows(saver, ordinary_id) == empty
+        assert await _rows(saver, delta_id) == empty
+        assert await _rows(saver, other_id) == other_before
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_unknown_strategy_changes_nothing(name: str) -> None:
+    async with _saver(name) as saver:
+        thread_id = str(uuid4())
+        await _three_checkpoints(saver, thread_id)
+        before = await _rows(saver, thread_id)
+
+        with pytest.raises(ValueError, match="keep_all"):
+            await _call(saver, "prune", [thread_id], strategy="keep_all")
+
+        assert await _rows(saver, thread_id) == before
+
+
+async def test_async_saver_prune_runs_from_another_thread_only() -> None:
+    async with _saver("aio_base") as saver:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+
+        with pytest.raises(asyncio.InvalidStateError):
+            saver.prune([thread_id])
+        await asyncio.to_thread(saver.prune, [thread_id])
+
+        assert (await _rows(saver, thread_id))["checkpoints"] == [
+            ("", head["configurable"]["checkpoint_id"])
+        ]
+
+
+async def test_prune_conformance() -> None:
+    @checkpointer_test(name="AsyncPostgresSaver")
+    async def postgres_saver():
+        async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+            await saver.setup()
+            yield saver
+
+    report = await validate(postgres_saver, capabilities={"prune"})
+
+    prune = report.results["prune"]
+    if not prune.passed:
+        details = "\n".join(prune.failures)
+        pytest.fail(f"Capability prune failed (passed={prune.passed}):\n{details}")
+
+
+@pytest.mark.parametrize("strategy", ["keep_latest", "delete"])
+@pytest.mark.parametrize("name", ["base", "aio_base"])
+async def test_prune_rejects_a_single_thread_id_string(
+    name: str, strategy: str
+) -> None:
+    async with _saver(name) as saver:
+        for thread_id in ("ab", "a", "b"):
+            await _three_checkpoints(saver, thread_id)
+        before = [await _rows(saver, t) for t in ("ab", "a", "b")]
+
+        with pytest.raises(TypeError, match="not a str"):
+            await _call(saver, "prune", "ab", strategy=strategy)
+
+        assert [await _rows(saver, t) for t in ("ab", "a", "b")] == before
+
+
+@pytest.mark.parametrize(
+    "after", [PRUNE_HEADS_SQL, PRUNE_REFERENCED_BLOBS_SQL], ids=["heads", "blobs"]
+)
+async def test_keep_latest_keeps_a_checkpoint_saved_while_it_runs(after: str) -> None:
+    async with _saver("aio_base") as saver, _second_saver(saver) as other:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+        saved: list[dict] = []
+
+        async def save_a_child() -> None:
+            saved.append(
+                await _put(
+                    other, thread_id, head, 3, {"a": [1, 2, 3, 4]}, {"a": "4", "s": "1"}
+                )
+            )
+
+        _run_once_after(saver, after, save_a_child)
+        await saver.aprune([thread_id])
+
+        loaded = await saver.aget_tuple(saved[0])
+        assert loaded is not None, "the checkpoint saved during the prune was deleted"
+        assert loaded.checkpoint["channel_values"] == {
+            "a": [1, 2, 3, 4],
+            "s": ["shared"],
+        }
+        assert loaded.parent_config == head
+
+
+async def test_keep_latest_refuses_a_thread_that_turns_delta_after_the_batch_check() -> (
+    None
+):
+    async with _saver("aio_base") as saver, _second_saver(saver) as other:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+
+        async def save_a_delta_checkpoint() -> None:
+            await _put(
+                other,
+                thread_id,
+                head,
+                3,
+                {},
+                {"a": "4", "s": "1"},
+                metadata={"counters_since_delta_snapshot": {"a": [1, 1]}},
+            )
+
+        _run_once_after(saver, PRUNE_DELTA_THREADS_SQL, save_a_delta_checkpoint)
+        with pytest.raises(NotImplementedError, match=thread_id):
+            await saver.aprune([thread_id])
+
+        assert len((await _rows(saver, thread_id))["checkpoints"]) == 4
+
+
+async def test_keep_latest_keeps_the_history_of_a_delta_checkpoint_saved_after_the_thread_check() -> (
+    None
+):
+    async with _saver("aio_base") as saver, _second_saver(saver) as other:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+        saved: list[dict] = []
+
+        async def save_a_delta_checkpoint() -> None:
+            saved.append(
+                await _put(
+                    other,
+                    thread_id,
+                    head,
+                    3,
+                    {},
+                    {"a": "4", "s": "1"},
+                    metadata={"counters_since_delta_snapshot": {"a": [1, 1]}},
+                )
+            )
+
+        _run_once_after(saver, PRUNE_DELTA_THREADS_SQL, save_a_delta_checkpoint, nth=2)
+        await saver.aprune([thread_id])
+
+        assert (await _rows(saver, thread_id))["checkpoints"] == [
+            ("", head["configurable"]["checkpoint_id"]),
+            ("", saved[0]["configurable"]["checkpoint_id"]),
+        ]
+        history = await saver.aget_delta_channel_history(
+            config=saved[0], channels=["a"]
+        )
+        assert history["a"]["seed"] == [1, 2, 3]
+        assert [value for _, _, value in history["a"]["writes"]] == [2]
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_deletes_a_subgraph_call_with_the_checkpoint_it_started_from(
+    name: str,
+) -> None:
+    async with _saver(name) as saver:
+        thread_id = str(uuid4())
+        older = await _put(saver, thread_id, None, 0, {}, {})
+        head = await _put(saver, thread_id, older, 1, {}, {})
+        unsaved = str(uuid6(clock_seq=2))
+        started_from = {
+            "finished:1": older["configurable"]["checkpoint_id"],
+            "interrupted:2": head["configurable"]["checkpoint_id"],
+            "running:3": unsaved,
+            "checkpointer_true": older["configurable"]["checkpoint_id"],
+        }
+        for ns, root in started_from.items():
+            await _three_checkpoints(
+                saver, thread_id, ns, metadata={"parents": {"": root}}
+            )
+
+        await _call(saver, "prune", [thread_id])
+
+        rows = await _rows(saver, thread_id)
+        assert {ns for ns, *_ in rows["checkpoints"]} == {
+            "",
+            "interrupted:2",
+            "running:3",
+            "checkpointer_true",
+        }
+        assert {ns for ns, *_ in rows["writes"]} == {
+            "interrupted:2",
+            "running:3",
+            "checkpointer_true",
+        }
+        assert {ns for ns, *_ in rows["blobs"]} == {
+            "interrupted:2",
+            "running:3",
+            "checkpointer_true",
+        }
+
+
+async def test_keep_latest_keeps_a_checkpoint_saved_meanwhile_whatever_its_id() -> None:
+    async with _saver("aio_base") as saver, _second_saver(saver) as other:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+        lower_id = "0" + head["configurable"]["checkpoint_id"][1:]
+        saved: list[dict] = []
+
+        async def save_a_child_with_a_lower_id() -> None:
+            child = await _put(
+                other,
+                thread_id,
+                head,
+                3,
+                {"a": [1, 2, 3, 4]},
+                {"a": "4", "s": "1"},
+                checkpoint_id=lower_id,
+            )
+            await _call(other, "put_writes", child, [("a", 4)], str(uuid4()))
+            saved.append(child)
+
+        _run_once_after(saver, PRUNE_HEADS_SQL, save_a_child_with_a_lower_id)
+        await saver.aprune([thread_id])
+
+        loaded = await saver.aget_tuple(saved[0])
+        assert loaded is not None, "the checkpoint saved during the prune was deleted"
+        assert loaded.checkpoint["channel_values"] == {
+            "a": [1, 2, 3, 4],
+            "s": ["shared"],
+        }
+        assert [value for _, _, value in loaded.pending_writes or []] == [4]
+
+
+@pytest.mark.parametrize("name", SAVERS)
+async def test_keep_latest_keeps_writes_saved_before_their_checkpoint(
+    name: str,
+) -> None:
+    async with _saver(name) as saver:
+        thread_id = str(uuid4())
+        head = await _three_checkpoints(saver, thread_id)
+        next_id = str(uuid6(clock_seq=3))
+        next_config = {
+            "configurable": {
+                "thread_id": thread_id,
+                "checkpoint_ns": "",
+                "checkpoint_id": next_id,
+            }
+        }
+        await _call(saver, "put_writes", next_config, [("a", 4)], str(uuid4()))
+
+        await _call(saver, "prune", [thread_id])
+        await _put(
+            saver, thread_id, head, 3, {}, {"a": "3", "s": "1"}, checkpoint_id=next_id
+        )
+
+        loaded = await _call(saver, "get_tuple", next_config)
+        assert [value for _, _, value in loaded.pending_writes] == [4]

libs/checkpoint-postgres/tests/test_store.py

@@ -11,6 +11,7 @@ import pytest
 from langchain_core.embeddings import Embeddings
 from langgraph.store.base import (
     GetOp,
+    InvalidNamespaceError,
     Item,
     ListNamespacesOp,
     MatchCondition,
@@ -1164,3 +1165,51 @@ def test_namespace_labels_with_trailing_newline(store) -> None:
     assert set(store.list_namespaces(prefix=["users", "alice"], limit=100)) == {
         ("users", "alice"),
     }
+
+
+@pytest.mark.parametrize("namespace", [("foo.bar",), ("foo", ""), ("foo", 1)])
+@pytest.mark.parametrize(
+    "kind", ["get", "put", "delete", "search", "list_prefix", "list_suffix"]
+)
+def test_batch_rejects_invalid_namespace_labels(
+    store, namespace: tuple, kind: str
+) -> None:
+    """Ops passed straight to `batch` must not reach another namespace.
+
+    Namespaces are stored dot-joined, so `("foo.bar",)` flattens to the same
+    text as `("foo", "bar")`. `BaseStore` methods validate labels themselves,
+    but `batch` takes ops as given.
+    """
+    op = {
+        "get": GetOp(namespace, "key"),
+        "put": PutOp(namespace, "key", {"changed": True}),
+        "delete": PutOp(namespace, "key", None),
+        "search": SearchOp(namespace),
+        "list_prefix": ListNamespacesOp((MatchCondition("prefix", namespace),)),
+        "list_suffix": ListNamespacesOp((MatchCondition("suffix", namespace),)),
+    }[kind]
+    store.put(("foo", "bar"), "key", {"original": True})
+
+    with pytest.raises(InvalidNamespaceError):
+        store.batch([PutOp(("valid",), "key", {}), op])
+
+    item = store.get(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}
+    # The whole batch is rejected before any SQL runs.
+    assert store.get(("valid",), "key") is None
+
+
+def test_batch_allows_empty_search_prefix_and_listing_wildcards(
+    store,
+) -> None:
+    store.put(("foo", "bar"), "key", {"v": 1})
+
+    found, listed = store.batch(
+        [
+            SearchOp(()),
+            ListNamespacesOp((MatchCondition("prefix", ("foo", "*")),)),
+        ]
+    )
+
+    assert [item.namespace for item in found] == [("foo", "bar")]
+    assert listed == [("foo", "bar")]

libs/checkpoint-postgres/uv.lock

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     { name = "idna" },
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 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions" },
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@@ -254,7 +254,8 @@ dependencies = [
     { name = "pydantic" },
     { name = "pyyaml" },
     { name = "tenacity" },
-    { name = "typing-extensions" },
+    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.15'" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.15'" },
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 version = "0.0.18"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions" },
+    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.15'" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.15'" },
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-version = "4.2.0"
+version = "4.3.0"
 source = { editable = "../checkpoint" }
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-version = "3.1.2"
+version = "3.2.0"
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+    "python_full_version >= '3.15'",
+]
 sdist = { url = "https://files.pythonhosted.org/packages/72/94/1a15dd82efb362ac84269196e94cf00f187f7ed21c242792a923cdb1c61f/typing_extensions-4.15.0.tar.gz", hash = "sha256:0cea48d173cc12fa28ecabc3b837ea3cf6f38c6d1136f85cbaaf598984861466", size = 109391, upload-time = "2025-08-25T13:49:26.313Z" }
 wheels = [
     { url = "https://files.pythonhosted.org/packages/18/67/36e9267722cc04a6b9f15c7f3441c2363321a3ea07da7ae0c0707beb2a9c/typing_extensions-4.15.0-py3-none-any.whl", hash = "sha256:f0fa19c6845758ab08074a0cfa8b7aecb71c999ca73d62883bc25cc018c4e548", size = 44614, upload-time = "2025-08-25T13:49:24.86Z" },
 ]
 
+[[package]]
+name = "typing-extensions"
+version = "4.16.0"
+source = { registry = "https://pypi.org/simple" }
+resolution-markers = [
+    "python_full_version < '3.15'",
+]
+sdist = { url = "https://files.pythonhosted.org/packages/f6/cc/6253133b5bb138fc3306cebfbda2c520f545d36b5be2c7255cc528bb45d6/typing_extensions-4.16.0.tar.gz", hash = "sha256:dc983d19a509c94dba722ee6abd33940f7c05a89e243c47e907eb4db6f1a43e5", size = 113555, upload-time = "2026-07-02T08:40:05.92Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/49/d3/b8441a820a491ddfc024b0b0cf0393375b75ea13866d9c66727e54c2fc80/typing_extensions-4.16.0-py3-none-any.whl", hash = "sha256:481caa481374e813c1b176ada14e97f1f67a4539ce9cfeb3f350d78d6370c2e8", size = 45571, upload-time = "2026-07-02T08:40:04.659Z" },
+]
+
 [[package]]
 name = "typing-inspection"
 version = "0.4.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions" },
+    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.15'" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.15'" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/55/e3/70399cb7dd41c10ac53367ae42139cf4b1ca5f36bb3dc6c9d33acdb43655/typing_inspection-0.4.2.tar.gz", hash = "sha256:ba561c48a67c5958007083d386c3295464928b01faa735ab8547c5692e87f464", size = 75949, upload-time = "2025-10-01T02:14:41.687Z" }
 wheels = [
@@ -1131,11 +1154,11 @@ wheels = [
 
 [[package]]
 name = "urllib3"
-version = "2.7.0"
+version = "2.8.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/53/0c/06f8b233b8fd13b9e5ee11424ef85419ba0d8ba0b3138bf360be2ff56953/urllib3-2.7.0.tar.gz", hash = "sha256:231e0ec3b63ceb14667c67be60f2f2c40a518cb38b03af60abc813da26505f4c", size = 433602, upload-time = "2026-05-07T16:13:18.596Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e3/05/b17359e1cefb4f909b5e40b1b90a496d987258916dbbf88e842c729f510e/urllib3-2.8.0.tar.gz", hash = "sha256:63bf2ead4c879426ebf22ef2a781eeb4aa3b4ae798a0435506f8687fd5bb9b63", size = 458972, upload-time = "2026-09-15T19:29:36.253Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/7f/3e/5db95bcf282c52709639744ca2a8b149baccf648e39c8cc87553df9eae0c/urllib3-2.7.0-py3-none-any.whl", hash = "sha256:9fb4c81ebbb1ce9531cce37674bbc6f1360472bc18ca9a553ede278ef7276897", size = 131087, upload-time = "2026-05-07T16:13:17.151Z" },
+    { url = "https://files.pythonhosted.org/packages/92/9d/c4e665119135114480843e7ab388fa94d8480650450e6f8e26b70d323a4c/urllib3-2.8.0-py3-none-any.whl", hash = "sha256:0cf3cae568d36aa9576b28dfb35f11328f1cb974ca7647d9475ebb86c75ac6e3", size = 135717, upload-time = "2026-09-15T19:29:34.577Z" },
 ]
 
 [[package]]

libs/checkpoint-sqlite/README.md

@@ -40,24 +40,12 @@ with SqliteSaver.from_conn_string(":memory:") as checkpointer:
         "v": 4,
         "ts": "2024-07-31T20:14:19.804150+00:00",
         "id": "1ef4f797-8335-6428-8001-8a1503f9b875",
-        "channel_values": {
-            "my_key": "meow",
-            "node": "node"
-        },
-        "channel_versions": {
-            "__start__": 2,
-            "my_key": 3,
-            "start:node": 3,
-            "node": 3
-        },
+        "channel_values": {"my_key": "meow", "node": "node"},
+        "channel_versions": {"__start__": 2, "my_key": 3, "start:node": 3, "node": 3},
         "versions_seen": {
             "__input__": {},
-            "__start__": {
-                "__start__": 1
-            },
-            "node": {
-                "start:node": 2
-            }
+            "__start__": {"__start__": 1},
+            "node": {"start:node": 2},
         },
     }
 
@@ -81,24 +69,12 @@ async with AsyncSqliteSaver.from_conn_string(":memory:") as checkpointer:
         "v": 4,
         "ts": "2024-07-31T20:14:19.804150+00:00",
         "id": "1ef4f797-8335-6428-8001-8a1503f9b875",
-        "channel_values": {
-            "my_key": "meow",
-            "node": "node"
-        },
-        "channel_versions": {
-            "__start__": 2,
-            "my_key": 3,
-            "start:node": 3,
-            "node": 3
-        },
+        "channel_values": {"my_key": "meow", "node": "node"},
+        "channel_versions": {"__start__": 2, "my_key": 3, "start:node": 3, "node": 3},
         "versions_seen": {
             "__input__": {},
-            "__start__": {
-                "__start__": 1
-            },
-            "node": {
-                "start:node": 2
-            }
+            "__start__": {"__start__": 1},
+            "node": {"start:node": 2},
         },
     }
 

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py

@@ -29,7 +29,11 @@ from langgraph.checkpoint.sqlite._delta import (
     build_delta_stage2_sql,
     step_walk_with_row,
 )
-from langgraph.checkpoint.sqlite.utils import search_where
+from langgraph.checkpoint.sqlite.utils import (
+    load_pending_writes,
+    pending_writes_sql,
+    search_where,
+)
 
 _AIO_ERROR_MSG = (
     "The SqliteSaver does not support async methods. "
@@ -81,6 +85,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
 
     conn: sqlite3.Connection
     is_setup: bool
+    _has_task_path: bool = True
 
     def __init__(
         self,
@@ -154,6 +159,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                 checkpoint_ns TEXT NOT NULL DEFAULT '',
                 checkpoint_id TEXT NOT NULL,
                 task_id TEXT NOT NULL,
+                task_path TEXT NOT NULL DEFAULT '',
                 idx INTEGER NOT NULL,
                 channel TEXT NOT NULL,
                 type TEXT,
@@ -162,6 +168,19 @@ class SqliteSaver(BaseCheckpointSaver[str]):
             );
             """
         )
+        # sqlite has no ADD COLUMN IF NOT EXISTS; this migrates databases
+        # created before `task_path` existed and is a no-op on the rest.
+        try:
+            self.conn.execute(
+                "ALTER TABLE writes ADD COLUMN task_path TEXT NOT NULL DEFAULT ''"
+            )
+        except sqlite3.OperationalError as e:
+            # A read-only database from before the column can still be read;
+            # its rows would all read back as '' anyway.
+            if "readonly database" in str(e):
+                self._has_task_path = False
+            elif "duplicate column name" not in str(e):
+                raise
 
         self.is_setup = True
 
@@ -260,7 +279,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                     }
                 # find any pending writes
                 cur.execute(
-                    "SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? ORDER BY task_id, idx",
+                    pending_writes_sql(self._has_task_path),
                     (
                         str(config["configurable"]["thread_id"]),
                         checkpoint_ns,
@@ -286,10 +305,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                         if parent_checkpoint_id
                         else None
                     ),
-                    [
-                        (task_id, channel, self.serde.loads_typed((type, value)))
-                        for task_id, channel, type, value in cur
-                    ],
+                    load_pending_writes(cur, self.serde),
                 )
 
     def list(
@@ -351,7 +367,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                 metadata,
             ) in cur:
                 wcur.execute(
-                    "SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? ORDER BY task_id, idx",
+                    pending_writes_sql(self._has_task_path),
                     (thread_id, checkpoint_ns, checkpoint_id),
                 )
                 yield CheckpointTuple(
@@ -378,10 +394,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                         if parent_checkpoint_id
                         else None
                     ),
-                    [
-                        (task_id, channel, self.serde.loads_typed((type, value)))
-                        for task_id, channel, type, value in wcur
-                    ],
+                    load_pending_writes(wcur, self.serde),
                 )
 
     def put(
@@ -460,9 +473,9 @@ class SqliteSaver(BaseCheckpointSaver[str]):
             task_path: Path of the task creating the writes.
         """
         query = (
-            "INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"
+            "INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, task_path, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
             if all(w[0] in WRITES_IDX_MAP for w in writes)
-            else "INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"
+            else "INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, task_path, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
         )
         with self.cursor() as cur:
             cur.executemany(
@@ -473,6 +486,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                         str(config["configurable"]["checkpoint_ns"]),
                         str(config["configurable"]["checkpoint_id"]),
                         task_id,
+                        task_path,
                         WRITES_IDX_MAP.get(channel, idx),
                         channel,
                         *self.serde.dumps_typed(value),
@@ -507,13 +521,12 @@ class SqliteSaver(BaseCheckpointSaver[str]):
 
         Two-stage query:
 
-        * Stage 1 (paged): newest-first slice of `checkpoints` returning
-          `(checkpoint_id, parent_checkpoint_id, type, checkpoint)` per
-          ancestor. Sqlite has no JSONB, so we ship the full serialized
-          checkpoint blob and inspect `channel_values` in Python. Pages
-          newest-first by `checkpoint_id` with a `< cursor` predicate;
-          page size is `DELTA_PAGE_SIZE`. Stops paging when every channel
-          has found its seed or the chain is exhausted.
+        * Stage 1 (streamed): recursive CTE over `checkpoints` following
+          `parent_checkpoint_id` from the target, returning
+          `(checkpoint_id, type, checkpoint)` per ancestor. Sqlite has no
+          JSONB, so we ship the full serialized checkpoint blob and inspect
+          `channel_values` in Python. Stops reading when every channel has
+          found its seed or the chain is exhausted.
 
         * Stage 2 (per-channel UNION ALL): one branch per channel reading
           `writes` filtered to that channel's specific `chain_cids`. No
@@ -526,7 +539,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
         thread_id = str(config["configurable"]["thread_id"])
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         checkpoint_id = get_checkpoint_id(config)
-        if checkpoint_id is None:
+        if not checkpoint_id:
             target = self.get_tuple(config)
             if target is None:
                 return {ch: {"writes": []} for ch in channels}
@@ -538,12 +551,14 @@ class SqliteSaver(BaseCheckpointSaver[str]):
         seeded: set[str] = set()
 
         with self.cursor(transaction=False) as cur:
-            cur.execute(DELTA_STAGE1_SQL, (thread_id, checkpoint_ns, checkpoint_id))
+            cur.execute(
+                DELTA_STAGE1_SQL,
+                (thread_id, checkpoint_ns, checkpoint_id, thread_id, checkpoint_ns),
+            )
             for row in cur:
-                cid, parent_cid, type_tag, blob = row
+                cid, type_tag, blob = row
                 if step_walk_with_row(
                     cid=cid,
-                    parent_cid=parent_cid,
                     type_tag=type_tag,
                     blob=blob,
                     target_id=checkpoint_id,
@@ -558,6 +573,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
 
             channels_with_chain = [ch for ch in channels if chain_by_ch[ch]]
             stage2_sql = build_delta_stage2_sql(
+                has_task_path=self._has_task_path,
                 chain_lens=[len(chain_by_ch[ch]) for ch in channels_with_chain],
             )
             if stage2_sql:
@@ -568,7 +584,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                     )
                 cur.execute(stage2_sql, stage2_params)
                 stage2_rows = cast(
-                    "list[tuple[str, str, str, int, str, bytes]]", cur.fetchall()
+                    "list[tuple[str, str, str, int, str, bytes, str]]", cur.fetchall()
                 )
             else:
                 stage2_rows = []

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/_delta.py

@@ -24,22 +24,45 @@ from __future__ import annotations
 from collections.abc import Mapping, Sequence
 from typing import Any
 
-from langgraph.checkpoint.base import DeltaChannelHistory, PendingWrite
+from langgraph.checkpoint.base import (
+    DeltaChannelHistory,
+    PendingWrite,
+    writes_sort_key,
+)
 
-# Stage 1 streams ancestors of `target_cid` newest-first. The `<=`
-# predicate keeps target itself in the stream so we can read its
-# `parent_checkpoint_id` from the first row without a separate lookup;
-# the caller skips target's own writes/seed (matches the
-# `BaseCheckpointSaver` contract).
+# Stage 1 streams target, then its ancestors nearest-first, by following
+# `parent_checkpoint_id` rather than id order: ids are only monotonic within
+# one process, so a range scan by id can miss a parent whose id sorts above
+# its child's. Target is the anchor row; its own writes/seed are skipped
+# (matches the `BaseCheckpointSaver` contract).
+#
+# `put` is `INSERT OR REPLACE`, so re-putting an existing id under a
+# descendant's config makes the chain a loop. `step_walk_with_row` stops on a
+# repeated id; sqlite yields recursive rows lazily, so abandoning the cursor
+# ends the recursion.
+#
+# `CROSS JOIN` pins `ancestors` as the outer loop, so each step is one primary
+# key lookup. With a plain `JOIN` and no `ANALYZE` stats, sqlite can put
+# `checkpoints` outside and scan the whole thread per step.
 DELTA_STAGE1_SQL = (
+    "WITH RECURSIVE ancestors(checkpoint_id, parent_checkpoint_id, type, "
+    "checkpoint) AS ("
     "SELECT checkpoint_id, parent_checkpoint_id, type, checkpoint "
     "FROM checkpoints "
-    "WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id <= ? "
-    "ORDER BY checkpoint_id DESC"
+    "WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? "
+    "UNION ALL "
+    "SELECT c.checkpoint_id, c.parent_checkpoint_id, c.type, c.checkpoint "
+    "FROM ancestors a CROSS JOIN checkpoints c "
+    "ON c.checkpoint_id = a.parent_checkpoint_id "
+    "WHERE c.thread_id = ? AND c.checkpoint_ns = ?"
+    ") "
+    "SELECT checkpoint_id, type, checkpoint FROM ancestors"
 )
 
 
-def build_delta_stage2_sql(*, chain_lens: Sequence[int]) -> str:
+def build_delta_stage2_sql(
+    *, chain_lens: Sequence[int], has_task_path: bool = True
+) -> str:
     """Stage-2 per-channel UNION ALL fetching writes from `writes`.
 
     One branch per channel with a non-empty chain. Each branch inlines its
@@ -53,11 +76,12 @@ def build_delta_stage2_sql(*, chain_lens: Sequence[int]) -> str:
     of a single `channel = ANY(channels)` filter when channels have
     different chain depths — same rationale as postgres.
     """
+    task_path = "task_path" if has_task_path else "''"
     branches: list[str] = []
     for n in chain_lens:
         cid_placeholders = ",".join("?" * n)
         branches.append(
-            "SELECT checkpoint_id, channel, task_id, idx, type, value "
+            f"SELECT checkpoint_id, channel, task_id, idx, type, value, {task_path} "
             "FROM writes "
             "WHERE thread_id = ? AND checkpoint_ns = ? AND channel = ? "
             f"AND checkpoint_id IN ({cid_placeholders})"
@@ -68,7 +92,6 @@ def build_delta_stage2_sql(*, chain_lens: Sequence[int]) -> str:
 def step_walk_with_row(
     *,
     cid: str,
-    parent_cid: str | None,
     type_tag: str,
     blob: bytes,
     target_id: str,
@@ -81,36 +104,32 @@ def step_walk_with_row(
 ) -> bool:
     """Process one streamed stage-1 row in the merged ancestor walk.
 
-    The cursor returns (cid, parent_cid, type, blob) rows in
-    `checkpoint_id` DESC order starting at target. The first row is
-    target itself; we read its parent_cid to seed the walk and otherwise
-    skip it (target's own writes/seed are not part of the contract).
+    The cursor returns (cid, type, blob) rows in walk order starting at
+    target. The first row is target itself and is skipped (target's own
+    writes/seed are not part of the contract).
 
-    For each subsequent row, if `cid` matches the walk's current
-    position, we deserialize the blob, append the cid to every
-    not-yet-seeded channel's chain, and check `channel_values` for
+    For each subsequent row we deserialize the blob, append the cid to
+    every not-yet-seeded channel's chain, and check `channel_values` for
     seeds. The deserialized checkpoint is dropped before advancing — no
     cross-row cache, so peak in-flight is one deserialized checkpoint.
 
-    Off-path rows (different branch on the same thread) advance the
-    cursor without doing any work.
-
-    Returns True when every requested channel is seeded — the caller
-    can stop iterating and close the cursor.
+    Returns True when the caller can stop iterating and close the cursor:
+    every requested channel is seeded, or the chain revisited a checkpoint.
     """
     if "started" not in walk_state:
         if cid == target_id:
             walk_state["started"] = True
-            walk_state["cur_cid"] = parent_cid
             walk_state["active"] = {ch for ch in channels if ch not in seeded}
+            walk_state["walked"] = {cid}
         # Not target yet (or target not present): keep streaming.
         return False
     active: set[str] = walk_state["active"]
     if not active:
         return True
-    if cid != walk_state["cur_cid"]:
-        # Off-path row from a sibling branch — skip without deserializing.
-        return False
+    walked: set[str] = walk_state["walked"]
+    if cid in walked:
+        return True
+    walked.add(cid)
     for ch in active:
         chain_by_ch[ch].append(cid)
     ckpt = serde.loads_typed((type_tag, blob))
@@ -120,7 +139,6 @@ def step_walk_with_row(
         seeded.add(ch)
         active.discard(ch)
     del ckpt, channel_values
-    walk_state["cur_cid"] = parent_cid
     return not active
 
 
@@ -130,29 +148,31 @@ def build_delta_channels_writes_history(
     chain_by_ch: Mapping[str, list[str]],
     seed_val_by_ch: Mapping[str, Any],
     seeded: set[str],
-    stage2_rows: Sequence[tuple[str, str, str, int, str, bytes]],
+    stage2_rows: Sequence[tuple[str, str, str, int, str, bytes, str]],
     serde: Any,
 ) -> dict[str, DeltaChannelHistory]:
     """Demux stage-2 rows per channel; produce per-channel histories.
 
-    Stage-2 rows are `(checkpoint_id, channel, task_id, idx, type, value)`.
-    Final write order is oldest→newest globally and `(task_id, idx)` within
-    a checkpoint, matching the contract on `DeltaChannelHistory.writes`.
+    Stage-2 rows are
+    `(checkpoint_id, channel, task_id, idx, type, value, task_path)`.
+    Final write order is oldest→newest globally and `writes_sort_key`
+    within a checkpoint, matching the contract on
+    `DeltaChannelHistory.writes`.
 
     `seed` is omitted when the walk reached a true root with no snapshot
     found (channel never entered `seeded`); consumers treat absence as
     "start empty".
     """
-    writes_by_ch_by_cid: dict[str, dict[str, list[tuple[str, bytes, str, int]]]] = {
-        ch: {} for ch in channels
-    }
-    for cid, ch, task_id, idx, type_tag, value_blob in stage2_rows:
+    writes_by_ch_by_cid: dict[
+        str, dict[str, list[tuple[str, bytes, str, int, str]]]
+    ] = {ch: {} for ch in channels}
+    for cid, ch, task_id, idx, type_tag, value_blob, task_path in stage2_rows:
         writes_by_ch_by_cid.setdefault(ch, {}).setdefault(cid, []).append(
-            (type_tag, value_blob, task_id, idx)
+            (type_tag, value_blob, task_id, idx, task_path)
         )
     for cid_map in writes_by_ch_by_cid.values():
         for ws in cid_map.values():
-            ws.sort(key=lambda w: (w[2], w[3]))
+            ws.sort(key=lambda w: writes_sort_key(w[4], w[2], w[3]))
 
     result: dict[str, DeltaChannelHistory] = {}
     for ch in channels:
@@ -161,7 +181,7 @@ def build_delta_channels_writes_history(
         collected: list[PendingWrite] = []
         # Chain is newest-first; iterate oldest-first for the public order.
         for cid in reversed(chain_cids):
-            for type_tag, value_blob, task_id, _idx in cid_writes.get(cid, []):
+            for type_tag, value_blob, task_id, _idx, _path in cid_writes.get(cid, []):
                 collected.append(
                     (task_id, ch, serde.loads_typed((type_tag, value_blob)))
                 )

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py

@@ -30,7 +30,11 @@ from langgraph.checkpoint.sqlite._delta import (
     build_delta_stage2_sql,
     step_walk_with_row,
 )
-from langgraph.checkpoint.sqlite.utils import search_where
+from langgraph.checkpoint.sqlite.utils import (
+    load_pending_writes,
+    pending_writes_sql,
+    search_where,
+)
 
 T = TypeVar("T", bound=Callable)
 
@@ -114,6 +118,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
 
     lock: asyncio.Lock
     is_setup: bool
+    _has_task_path: bool = True
 
     def __init__(
         self,
@@ -331,6 +336,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                     checkpoint_ns TEXT NOT NULL DEFAULT '',
                     checkpoint_id TEXT NOT NULL,
                     task_id TEXT NOT NULL,
+                    task_path TEXT NOT NULL DEFAULT '',
                     idx INTEGER NOT NULL,
                     channel TEXT NOT NULL,
                     type TEXT,
@@ -341,6 +347,21 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
             ):
                 await self.conn.commit()
 
+            # sqlite has no ADD COLUMN IF NOT EXISTS; this migrates databases
+            # created before `task_path` existed and is a no-op on the rest.
+            try:
+                await self.conn.execute(
+                    "ALTER TABLE writes ADD COLUMN task_path TEXT NOT NULL DEFAULT ''"
+                )
+                await self.conn.commit()
+            except aiosqlite.OperationalError as e:
+                # A read-only database from before the column can still be read;
+                # its rows would all read back as '' anyway.
+                if "readonly database" in str(e):
+                    self._has_task_path = False
+                elif "duplicate column name" not in str(e):
+                    raise
+
             self.is_setup = True
 
     async def aget_tuple(self, config: RunnableConfig) -> CheckpointTuple | None:
@@ -395,7 +416,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                     }
                 # find any pending writes
                 await cur.execute(
-                    "SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? ORDER BY task_id, idx",
+                    pending_writes_sql(self._has_task_path),
                     (
                         str(config["configurable"]["thread_id"]),
                         checkpoint_ns,
@@ -421,10 +442,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                         if parent_checkpoint_id
                         else None
                     ),
-                    [
-                        (task_id, channel, self.serde.loads_typed((type, value)))
-                        async for task_id, channel, type, value in cur
-                    ],
+                    load_pending_writes(await cur.fetchall(), self.serde),
                 )
 
     async def alist(
@@ -473,7 +491,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                 metadata,
             ) in cur:
                 await wcur.execute(
-                    "SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? ORDER BY task_id, idx",
+                    pending_writes_sql(self._has_task_path),
                     (thread_id, checkpoint_ns, checkpoint_id),
                 )
                 yield CheckpointTuple(
@@ -500,10 +518,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                         if parent_checkpoint_id
                         else None
                     ),
-                    [
-                        (task_id, channel, self.serde.loads_typed((type, value)))
-                        async for task_id, channel, type, value in wcur
-                    ],
+                    load_pending_writes(await wcur.fetchall(), self.serde),
                 )
 
     async def aput(
@@ -576,9 +591,9 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
             task_path: Path of the task creating the writes.
         """
         query = (
-            "INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"
+            "INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, task_path, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
             if all(w[0] in WRITES_IDX_MAP for w in writes)
-            else "INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"
+            else "INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, task_path, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
         )
         await self.setup()
         async with self.lock, self.conn.cursor() as cur:
@@ -590,6 +605,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                         str(config["configurable"]["checkpoint_ns"]),
                         str(config["configurable"]["checkpoint_id"]),
                         task_id,
+                        task_path,
                         WRITES_IDX_MAP.get(channel, idx),
                         channel,
                         *self.serde.dumps_typed(value),
@@ -625,8 +641,8 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
         """Fast-path override of `BaseCheckpointSaver.aget_delta_channel_history`.
 
         See `SqliteSaver.get_delta_channel_history` for design notes; this
-        is the async equivalent using `aiosqlite` cursors. Stage 1 pages
-        the parent chain newest-first and Python-deserializes each
+        is the async equivalent using `aiosqlite` cursors. Stage 1 streams
+        the parent chain from the target and Python-deserializes each
         checkpoint blob to find per-channel snapshots; stage 2 fetches
         only the relevant writes via per-channel UNION ALL.
         """
@@ -637,7 +653,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
         thread_id = str(config["configurable"]["thread_id"])
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         checkpoint_id = get_checkpoint_id(config)
-        if checkpoint_id is None:
+        if not checkpoint_id:
             target = await self.aget_tuple(config)
             if target is None:
                 return {ch: {"writes": []} for ch in channels}
@@ -650,13 +666,13 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
 
         async with self.lock, self.conn.cursor() as cur:
             await cur.execute(
-                DELTA_STAGE1_SQL, (thread_id, checkpoint_ns, checkpoint_id)
+                DELTA_STAGE1_SQL,
+                (thread_id, checkpoint_ns, checkpoint_id, thread_id, checkpoint_ns),
             )
             async for row in cur:
-                cid, parent_cid, type_tag, blob = row
+                cid, type_tag, blob = row
                 if step_walk_with_row(
                     cid=cid,
-                    parent_cid=parent_cid,
                     type_tag=type_tag,
                     blob=blob,
                     target_id=checkpoint_id,
@@ -671,6 +687,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
 
             channels_with_chain = [ch for ch in channels if chain_by_ch[ch]]
             stage2_sql = build_delta_stage2_sql(
+                has_task_path=self._has_task_path,
                 chain_lens=[len(chain_by_ch[ch]) for ch in channels_with_chain],
             )
             if stage2_sql:
@@ -681,7 +698,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                     )
                 await cur.execute(stage2_sql, stage2_params)
                 stage2_rows = cast(
-                    "list[tuple[str, str, str, int, str, bytes]]",
+                    "list[tuple[str, str, str, int, str, bytes, str]]",
                     await cur.fetchall(),
                 )
             else:

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/utils.py

@@ -2,11 +2,12 @@ from __future__ import annotations
 
 import json
 import re
-from collections.abc import Sequence
+from collections.abc import Iterable, Sequence
 from typing import Any
 
 from langchain_core.runnables import RunnableConfig
-from langgraph.checkpoint.base import get_checkpoint_id
+from langgraph.checkpoint.base import PendingWrite, get_checkpoint_id, writes_sort_key
+from langgraph.checkpoint.serde.base import SerializerProtocol
 
 _FILTER_PATTERN = re.compile(r"^[a-zA-Z0-9_.-]+$")
 
@@ -114,3 +115,23 @@ def search_where(
         param_values.append(get_checkpoint_id(before))
 
     return ("WHERE " + " AND ".join(wheres) if wheres else "", param_values)
+
+
+def pending_writes_sql(has_task_path: bool) -> str:
+    task_path = "task_path" if has_task_path else "''"
+    return (
+        f"SELECT task_id, channel, type, value, {task_path}, idx FROM writes "
+        "WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ?"
+    )
+
+
+def load_pending_writes(
+    rows: Iterable[Any], serde: SerializerProtocol
+) -> list[PendingWrite]:
+    """Deserialize `pending_writes_sql` rows in `writes_sort_key` order."""
+    return [
+        (task_id, channel, serde.loads_typed((type_, value)))
+        for task_id, channel, type_, value, _, _ in sorted(
+            rows, key=lambda r: writes_sort_key(r[4], r[0], r[5])
+        )
+    ]

libs/checkpoint-sqlite/langgraph/store/sqlite/aio.py

@@ -547,7 +547,7 @@ class AsyncSqliteStore(AsyncBatchedBaseStore, BaseSqliteStore):
             await cur.execute(query, params)
             rows = await cur.fetchall()
 
-            if needs_refresh and rows and self.ttl_config:
+            if needs_refresh and self.ttl_config:
                 keys_to_refresh = []
                 for row_data in rows:
                     # Assuming row_data[0] is prefix (text), row_data[1] is key (text)

libs/checkpoint-sqlite/langgraph/store/sqlite/base.py

@@ -7,7 +7,7 @@ import re
 import sqlite3
 import threading
 from collections import defaultdict
-from collections.abc import Callable, Iterable, Iterator, Sequence
+from collections.abc import Callable, Iterable, Iterator, Mapping, Sequence
 from contextlib import contextmanager
 from typing import Any, Literal, NamedTuple, cast
 
@@ -28,6 +28,7 @@ from langgraph.store.base import (
     ensure_embeddings,
     get_text_at_path,
     tokenize_path,
+    validate_op_namespace,
 )
 
 _AIO_ERROR_MSG = (
@@ -257,6 +258,7 @@ def _group_ops(ops: Iterable[Op]) -> tuple[dict[type, list[tuple[int, Op]]], int
     grouped_ops: dict[type, list[tuple[int, Op]]] = defaultdict(list)
     tot = 0
     for idx, op in enumerate(ops):
+        validate_op_namespace(op)
         grouped_ops[type(op)].append((idx, op))
         tot += 1
     return grouped_ops, tot
@@ -387,7 +389,7 @@ class BaseSqliteStore:
                     [
                         _namespace_to_text(op.namespace),
                         op.key,
-                        orjson.dumps(cast(dict, op.value)),
+                        orjson.dumps(dict(cast(Mapping[str, Any], op.value))),
                         expires_at,
                         op.ttl,
                     ]

libs/checkpoint-sqlite/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-    "langgraph-checkpoint>=4.1.0,<5.0.0",
+    "langgraph-checkpoint>=4.3.0,<5.0.0",
     "aiosqlite>=0.20",
     "sqlite-vec>=0.1.6",
 ]

libs/checkpoint-sqlite/tests/test_async_store.py

@@ -9,8 +9,10 @@ from typing import cast
 import pytest
 from langgraph.store.base import (
     GetOp,
+    InvalidNamespaceError,
     Item,
     ListNamespacesOp,
+    MatchCondition,
     PutOp,
     SearchOp,
 )
@@ -745,3 +747,65 @@ async def test_async_namespace_segment_boundary(store: AsyncSqliteStore) -> None
     assert set(await store.alist_namespaces(suffix=["alice"], limit=100)) == {
         ("uid", "users", "alice"),
     }
+
+
+@pytest.mark.parametrize("namespace", [("foo.bar",), ("foo", ""), ("foo", 1)])
+async def test_abatch_rejects_invalid_namespace_labels(
+    store: AsyncSqliteStore, namespace: tuple
+) -> None:
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    for op in (
+        GetOp(namespace, "key"),
+        GetOp(namespace, "key", refresh_ttl=True),
+        PutOp(namespace, "key", {"changed": True}),
+        PutOp(namespace, "key", None),
+        SearchOp(namespace),
+        ListNamespacesOp((MatchCondition("prefix", namespace),)),
+        ListNamespacesOp((MatchCondition("suffix", namespace),)),
+    ):
+        with pytest.raises(InvalidNamespaceError):
+            await store.abatch([op])
+
+    item = await store.aget(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}
+
+
+async def test_invalid_namespace_only_fails_its_own_call(
+    store: AsyncSqliteStore,
+) -> None:
+    """Concurrent calls share one `abatch`, which fails every op if it raises.
+
+    Labels are checked before an op is queued, so one caller's bad label cannot
+    fail another caller's request.
+    """
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    valid, invalid = await asyncio.gather(
+        store.aget(("foo", "bar"), "key"),
+        store.aget(("foo.bar",), "key"),
+        return_exceptions=True,
+    )
+
+    assert isinstance(valid, Item) and valid.value == {"original": True}
+    assert isinstance(invalid, InvalidNamespaceError)
+
+
+async def test_sync_methods_reject_invalid_namespace_labels(
+    store: AsyncSqliteStore,
+) -> None:
+    """The sync wrappers run off the event loop thread and must validate too."""
+    await store.aput(("foo", "bar"), "key", {"original": True})
+
+    for call in (
+        lambda: store.get(("foo.bar",), "key"),
+        lambda: store.search(("foo.bar",)),
+        lambda: store.delete(("foo.bar",), "key"),
+        lambda: store.list_namespaces(prefix=("foo.bar",)),
+        lambda: store.batch([GetOp(("foo.bar",), "key")]),
+    ):
+        with pytest.raises(InvalidNamespaceError):
+            await asyncio.to_thread(call)
+
+    item = await store.aget(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}

libs/checkpoint-sqlite/tests/test_delta_parent_walk.py

@@ -0,0 +1,137 @@
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+from langgraph.checkpoint.base import (
+    BaseCheckpointSaver,
+    Checkpoint,
+    DeltaChannelHistory,
+    empty_checkpoint,
+)
+
+from langgraph.checkpoint.sqlite import SqliteSaver
+from langgraph.checkpoint.sqlite._delta import DELTA_STAGE1_SQL
+from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
+
+CHANNEL = "ch"
+CONFIG: dict[str, Any] = {"configurable": {"thread_id": "t", "checkpoint_ns": ""}}
+EXPECTED: DeltaChannelHistory = {
+    "writes": [("task", CHANNEL, "write-root")],
+    "seed": "seed",
+}
+
+
+def _checkpoint(checkpoint_id: str, values: dict[str, Any]) -> Checkpoint:
+    value = empty_checkpoint()
+    value["id"] = checkpoint_id
+    value["channel_values"] = values
+    return value
+
+
+PARENT_ID_ORDERS = [
+    pytest.param("z-older", "a-newer", id="parent_id_sorts_above_child"),
+    pytest.param("a-older", "z-newer", id="parent_id_sorts_below_child"),
+]
+
+
+@pytest.mark.parametrize(("root_id", "child_id"), PARENT_ID_ORDERS)
+def test_sync_walk_reaches_parent_whatever_the_id_order(
+    root_id: str, child_id: str
+) -> None:
+    with SqliteSaver.from_conn_string(":memory:") as saver:
+        root = saver.put(CONFIG, _checkpoint(root_id, {CHANNEL: "seed"}), {}, {})
+        saver.put_writes(root, [(CHANNEL, "write-root")], "task")
+        child = saver.put(root, _checkpoint(child_id, {}), {}, {})
+
+        got = saver.get_delta_channel_history(config=child, channels=[CHANNEL])
+        reference = BaseCheckpointSaver.get_delta_channel_history(
+            saver, config=child, channels=[CHANNEL]
+        )
+        assert got[CHANNEL] == EXPECTED
+        assert got[CHANNEL] == reference[CHANNEL], "fast path disagrees with base"
+
+
+@pytest.mark.parametrize(("root_id", "child_id"), PARENT_ID_ORDERS)
+async def test_async_walk_reaches_parent_whatever_the_id_order(
+    root_id: str, child_id: str
+) -> None:
+    async with AsyncSqliteSaver.from_conn_string(":memory:") as saver:
+        root = await saver.aput(CONFIG, _checkpoint(root_id, {CHANNEL: "seed"}), {}, {})
+        await saver.aput_writes(root, [(CHANNEL, "write-root")], "task")
+        child = await saver.aput(root, _checkpoint(child_id, {}), {}, {})
+
+        got = await saver.aget_delta_channel_history(config=child, channels=[CHANNEL])
+        assert got[CHANNEL] == EXPECTED
+
+
+EMPTY_CHECKPOINT_ID: dict[str, Any] = {
+    "configurable": {**CONFIG["configurable"], "checkpoint_id": ""}
+}
+
+
+def test_sync_empty_checkpoint_id_reads_from_the_latest_checkpoint() -> None:
+    with SqliteSaver.from_conn_string(":memory:") as saver:
+        root = saver.put(CONFIG, _checkpoint("a-older", {CHANNEL: "seed"}), {}, {})
+        saver.put_writes(root, [(CHANNEL, "write-root")], "task")
+        saver.put(root, _checkpoint("z-newer", {}), {}, {})
+
+        got = saver.get_delta_channel_history(
+            config=EMPTY_CHECKPOINT_ID, channels=[CHANNEL]
+        )
+
+        assert got[CHANNEL] == EXPECTED
+
+
+async def test_async_empty_checkpoint_id_reads_from_the_latest_checkpoint() -> None:
+    async with AsyncSqliteSaver.from_conn_string(":memory:") as saver:
+        root = await saver.aput(
+            CONFIG, _checkpoint("a-older", {CHANNEL: "seed"}), {}, {}
+        )
+        await saver.aput_writes(root, [(CHANNEL, "write-root")], "task")
+        await saver.aput(root, _checkpoint("z-newer", {}), {}, {})
+
+        got = await saver.aget_delta_channel_history(
+            config=EMPTY_CHECKPOINT_ID, channels=[CHANNEL]
+        )
+
+        assert got[CHANNEL] == EXPECTED
+
+
+def test_walk_reaches_root_of_long_chain_with_descending_ids() -> None:
+    steps = 40
+    with SqliteSaver.from_conn_string(":memory:") as saver:
+        parent = saver.put(
+            CONFIG, _checkpoint(f"id-{steps:03d}", {CHANNEL: "seed"}), {}, {}
+        )
+        saver.put_writes(parent, [(CHANNEL, "write-root")], "task")
+        for step in range(steps - 1, 0, -1):
+            parent = saver.put(parent, _checkpoint(f"id-{step:03d}", {}), {}, {})
+
+        got = saver.get_delta_channel_history(config=parent, channels=[CHANNEL])
+        assert got[CHANNEL] == EXPECTED
+
+
+def test_walk_terminates_when_put_makes_the_parent_chain_cycle() -> None:
+    with SqliteSaver.from_conn_string(":memory:") as saver:
+        a = saver.put(CONFIG, _checkpoint("cid-a", {}), {}, {})
+        b = saver.put(a, _checkpoint("cid-b", {}), {}, {})
+        repoint_a_under_b = _checkpoint("cid-a", {})
+        saver.put(b, repoint_a_under_b, {}, {})
+
+        got = saver.get_delta_channel_history(config=b, channels=[CHANNEL])
+        assert got[CHANNEL] == {"writes": []}
+
+
+def test_walk_step_looks_up_the_parent_by_primary_key() -> None:
+    with SqliteSaver.from_conn_string(":memory:") as saver:
+        saver.setup()
+        plan = [
+            row[3]
+            for row in saver.conn.execute(
+                f"EXPLAIN QUERY PLAN {DELTA_STAGE1_SQL}", ("t", "", "id", "t", "")
+            )
+        ]
+    assert any(
+        step.startswith("SEARCH c ") and "checkpoint_id=?" in step for step in plan
+    ), f"recursive step should look up the parent by key, got {plan}"

libs/checkpoint-sqlite/tests/test_store.py

@@ -14,6 +14,7 @@ import pytest
 from langchain_core.embeddings import Embeddings
 from langgraph.store.base import (
     GetOp,
+    InvalidNamespaceError,
     Item,
     ListNamespacesOp,
     MatchCondition,
@@ -1363,6 +1364,17 @@ def test_search_empty_prefix_is_unconstrained(store: SqliteStore) -> None:
     }
 
 
+@pytest.mark.parametrize("batched", [False, True])
+def test_search_rejects_nul_namespace_prefix(store: SqliteStore, batched: bool) -> None:
+    store.put(("a",), "key", {"v": 1})
+
+    with pytest.raises(InvalidNamespaceError, match="NUL"):
+        if batched:
+            store.batch([SearchOp(("a\x00",))])
+        else:
+            store.search(("a\x00",))
+
+
 def test_namespace_labels_with_trailing_newline(store: SqliteStore) -> None:
     """Labels may contain newlines, and must not match a differently-named label.
 
@@ -1435,3 +1447,51 @@ def test_list_namespaces_metacharacter_labels(store: SqliteStore) -> None:
         assert set(store.list_namespaces(prefix=[label, "child"], limit=100)) == {
             (label, "child"),
         }
+
+
+@pytest.mark.parametrize("namespace", [("foo.bar",), ("foo", ""), ("foo", 1)])
+@pytest.mark.parametrize(
+    "kind", ["get", "put", "delete", "search", "list_prefix", "list_suffix"]
+)
+def test_batch_rejects_invalid_namespace_labels(
+    store: SqliteStore, namespace: tuple, kind: str
+) -> None:
+    """Ops passed straight to `batch` must not reach another namespace.
+
+    Namespaces are stored dot-joined, so `("foo.bar",)` flattens to the same
+    text as `("foo", "bar")`. `BaseStore` methods validate labels themselves,
+    but `batch` takes ops as given.
+    """
+    op = {
+        "get": GetOp(namespace, "key"),
+        "put": PutOp(namespace, "key", {"changed": True}),
+        "delete": PutOp(namespace, "key", None),
+        "search": SearchOp(namespace),
+        "list_prefix": ListNamespacesOp((MatchCondition("prefix", namespace),)),
+        "list_suffix": ListNamespacesOp((MatchCondition("suffix", namespace),)),
+    }[kind]
+    store.put(("foo", "bar"), "key", {"original": True})
+
+    with pytest.raises(InvalidNamespaceError):
+        store.batch([PutOp(("valid",), "key", {}), op])
+
+    item = store.get(("foo", "bar"), "key")
+    assert item is not None and item.value == {"original": True}
+    # The whole batch is rejected before any SQL runs.
+    assert store.get(("valid",), "key") is None
+
+
+def test_batch_allows_empty_search_prefix_and_listing_wildcards(
+    store: SqliteStore,
+) -> None:
+    store.put(("foo", "bar"), "key", {"v": 1})
+
+    found, listed = store.batch(
+        [
+            SearchOp(()),
+            ListNamespacesOp((MatchCondition("prefix", ("foo", "*")),)),
+        ]
+    )
+
+    assert [item.namespace for item in found] == [("foo", "bar")]
+    assert listed == [("foo", "bar")]

libs/checkpoint-sqlite/tests/test_writes_task_path_migration.py

@@ -0,0 +1,151 @@
+import sqlite3
+from collections.abc import Iterator
+from contextlib import closing
+from pathlib import Path
+
+import aiosqlite
+import pytest
+from langgraph.checkpoint.base import empty_checkpoint
+
+from langgraph.checkpoint.sqlite import SqliteSaver
+from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
+
+WRITES_BEFORE_TASK_PATH = """
+CREATE TABLE writes (
+    thread_id TEXT NOT NULL,
+    checkpoint_ns TEXT NOT NULL DEFAULT '',
+    checkpoint_id TEXT NOT NULL,
+    task_id TEXT NOT NULL,
+    idx INTEGER NOT NULL,
+    channel TEXT NOT NULL,
+    type TEXT,
+    value BLOB,
+    PRIMARY KEY (thread_id, checkpoint_ns, checkpoint_id, task_id, idx)
+);
+INSERT INTO writes VALUES ('t', '', 'c', 'old-task', 0, 'ch', 'null', X'');
+"""
+
+
+@pytest.fixture
+def legacy_db(tmp_path: Path) -> Path:
+    db = tmp_path / "legacy.sqlite"
+    with sqlite3.connect(db) as conn:
+        conn.executescript(WRITES_BEFORE_TASK_PATH)
+    return db
+
+
+def test_setup_migrates_legacy_writes_table_repeatably(legacy_db: Path) -> None:
+    for _ in range(2):
+        with SqliteSaver.from_conn_string(str(legacy_db)) as saver:
+            saver.setup()
+            rows = saver.conn.execute(
+                "SELECT task_id, task_path FROM writes"
+            ).fetchall()
+            assert rows == [("old-task", "")]
+
+
+@pytest.mark.parametrize("fresh", [True, False], ids=["fresh", "legacy"])
+def test_put_writes_persists_task_path(
+    tmp_path: Path, legacy_db: Path, fresh: bool
+) -> None:
+    db = tmp_path / "fresh.sqlite" if fresh else legacy_db
+    with SqliteSaver.from_conn_string(str(db)) as saver:
+        config = saver.put(
+            {"configurable": {"thread_id": "t", "checkpoint_ns": ""}},
+            empty_checkpoint(),
+            {},
+            {},
+        )
+        saver.put_writes(config, [("ch", "v")], "task-1", "~__pregel_pull, node")
+        stored = saver.conn.execute(
+            "SELECT task_path FROM writes WHERE task_id = 'task-1'"
+        ).fetchall()
+    assert stored == [("~__pregel_pull, node",)]
+
+
+async def test_async_setup_migrates_legacy_writes_table_repeatably(
+    legacy_db: Path,
+) -> None:
+    for _ in range(2):
+        async with AsyncSqliteSaver.from_conn_string(str(legacy_db)) as saver:
+            await saver.setup()
+            config = await saver.aput(
+                {"configurable": {"thread_id": "t", "checkpoint_ns": ""}},
+                empty_checkpoint(),
+                {},
+                {},
+            )
+            await saver.aput_writes(
+                config, [("ch", "v")], "task-1", "~__pregel_pull, node"
+            )
+
+    async with aiosqlite.connect(legacy_db) as conn:
+        async with conn.execute(
+            "SELECT DISTINCT task_id, task_path FROM writes ORDER BY task_id"
+        ) as cur:
+            assert await cur.fetchall() == [
+                ("old-task", ""),
+                ("task-1", "~__pregel_pull, node"),
+            ]
+
+
+@pytest.fixture
+def busy_db(tmp_path: Path) -> Iterator[Path]:
+    db = tmp_path / "busy.sqlite"
+    with SqliteSaver.from_conn_string(str(db)) as saver:
+        saver.setup()
+    with closing(sqlite3.connect(db, isolation_level=None)) as writer:
+        writer.execute("BEGIN IMMEDIATE")
+        yield db
+        writer.execute("ROLLBACK")
+
+
+def test_setup_does_not_wait_on_another_writer(busy_db: Path) -> None:
+    with closing(sqlite3.connect(busy_db, timeout=0)) as conn:
+        SqliteSaver(conn).setup()
+
+
+async def test_async_setup_does_not_wait_on_another_writer(busy_db: Path) -> None:
+    async with aiosqlite.connect(busy_db, timeout=0) as conn:
+        await AsyncSqliteSaver(conn).setup()
+
+
+def _legacy_database_with_history(db: Path) -> dict:
+    root = empty_checkpoint()
+    root["channel_values"] = {"ch": "seed"}
+    root["channel_versions"] = {"ch": 1}
+    with SqliteSaver.from_conn_string(str(db)) as saver:
+        root_config = saver.put(
+            {"configurable": {"thread_id": "t", "checkpoint_ns": ""}},
+            root,
+            {},
+            {"ch": 1},
+        )
+        saver.put_writes(root_config, [("ch", "write")], "task", "~__pregel_pull, n")
+        child = saver.put(root_config, empty_checkpoint(), {}, {})
+        saver.conn.execute("ALTER TABLE writes DROP COLUMN task_path")
+        saver.conn.commit()
+    return child
+
+
+def test_read_only_legacy_database_still_reads_delta_history(tmp_path: Path) -> None:
+    db = tmp_path / "legacy.sqlite"
+    child = _legacy_database_with_history(db)
+
+    saver = SqliteSaver(sqlite3.connect(f"file:{db}?mode=ro", uri=True))
+    got = saver.get_delta_channel_history(config=child, channels=["ch"])
+
+    assert got["ch"] == {"seed": "seed", "writes": [("task", "ch", "write")]}
+
+
+async def test_async_read_only_legacy_database_still_reads_delta_history(
+    tmp_path: Path,
+) -> None:
+    db = tmp_path / "legacy.sqlite"
+    child = _legacy_database_with_history(db)
+
+    async with aiosqlite.connect(f"file:{db}?mode=ro", uri=True) as conn:
+        saver = AsyncSqliteSaver(conn)
+        got = await saver.aget_delta_channel_history(config=child, channels=["ch"])
+
+    assert got["ch"] == {"seed": "seed", "writes": [("task", "ch", "write")]}

libs/checkpoint-sqlite/uv.lock

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 [[package]]
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-version = "4.2.0"
+version = "4.3.0"
 source = { editable = "../checkpoint" }
 dependencies = [
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@@ -360,7 +360,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 source = { editable = "." }
 dependencies = [
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+    { url = "https://files.pythonhosted.org/packages/92/9d/c4e665119135114480843e7ab388fa94d8480650450e6f8e26b70d323a4c/urllib3-2.8.0-py3-none-any.whl", hash = "sha256:0cf3cae568d36aa9576b28dfb35f11328f1cb974ca7647d9475ebb86c75ac6e3", size = 135717, upload-time = "2026-09-15T19:29:34.577Z" },
 ]
 
 [[package]]

libs/checkpoint/README.md

@@ -39,7 +39,12 @@ You must pass these when invoking the graph as part of the configurable part of
 
 ```python
 {"configurable": {"thread_id": "1"}}  # valid config
-{"configurable": {"thread_id": "1", "checkpoint_id": "0c62ca34-ac19-445d-bbb0-5b4984975b2a"}}  # also valid config
+{
+    "configurable": {
+        "thread_id": "1",
+        "checkpoint_id": "0c62ca34-ac19-445d-bbb0-5b4984975b2a",
+    }
+}  # also valid config
 ```
 
 ### Serde
@@ -79,24 +84,12 @@ checkpoint = {
     "v": 4,
     "ts": "2024-07-31T20:14:19.804150+00:00",
     "id": "1ef4f797-8335-6428-8001-8a1503f9b875",
-    "channel_values": {
-      "my_key": "meow",
-      "node": "node"
-    },
-    "channel_versions": {
-      "__start__": 2,
-      "my_key": 3,
-      "start:node": 3,
-      "node": 3
-    },
+    "channel_values": {"my_key": "meow", "node": "node"},
+    "channel_versions": {"__start__": 2, "my_key": 3, "start:node": 3, "node": 3},
     "versions_seen": {
-      "__input__": {},
-      "__start__": {
-        "__start__": 1
-      },
-      "node": {
-        "start:node": 2
-      }
+        "__input__": {},
+        "__start__": {"__start__": 1},
+        "node": {"start:node": 2},
     },
 }
 

libs/checkpoint/langgraph/checkpoint/base/__init__.py

@@ -10,6 +10,7 @@ from typing import (
     NamedTuple,
     TypedDict,
     TypeVar,
+    cast,
 )
 
 from langchain_core.runnables import RunnableConfig
@@ -161,6 +162,14 @@ class DeltaChannelHistory(TypedDict):
       Always present; possibly empty. Already filtered to one channel.
       Writes stored at the target checkpoint itself are pending for the
       next super-step and are excluded.
+
+      Within a single checkpoint, writes are ordered by `writes_sort_key`,
+      `(task_path, task_id, idx)`, which is the order live execution applies
+      a super-step's task writes in. `task_id` is a hash of the path, so
+      ordering by it permutes parallel tasks writing one channel, and
+      reducers need not be order-invariant. Writes stored without a
+      `task_path` (graph input, `update_state` and `Command` updates, rows
+      predating the column) sort first, by `task_id`.
     * `seed` — the stored value at the nearest ancestor whose
       `channel_values[ch]` is populated. Omitted if the walk reached the
       root without finding any stored value (consumer treats absence as
@@ -173,6 +182,20 @@ class DeltaChannelHistory(TypedDict):
     seed: NotRequired[Any]
 
 
+def writes_sort_key(
+    task_path: str, task_id: str = "", idx: int = 0
+) -> tuple[str, str, int]:
+    """Sort key for the writes of one super-step.
+
+    Live execution applies a super-step's tasks in this order, so a saver
+    that replays stored writes, as `get_delta_channel_history` does, must
+    sort them by it too, or an order-sensitive reducer rebuilds a different
+    value than the run produced. `task_path` is the string passed to
+    `put_writes`.
+    """
+    return (task_path, task_id, idx)
+
+
 class BaseCheckpointSaver(Generic[V]):
     """Base class for creating a graph checkpointer.
 
@@ -243,7 +266,8 @@ class BaseCheckpointSaver(Generic[V]):
             config: Configuration specifying which checkpoint to retrieve.
 
         Returns:
-            The requested checkpoint tuple, or `None` if not found.
+            The requested checkpoint tuple, or `None` if not found. Its
+                `pending_writes` must be in `writes_sort_key` order.
 
         Raises:
             NotImplementedError: Implement this method in your custom checkpoint saver.
@@ -433,7 +457,8 @@ class BaseCheckpointSaver(Generic[V]):
             config: Configuration specifying which checkpoint to retrieve.
 
         Returns:
-            The requested checkpoint tuple, or `None` if not found.
+            The requested checkpoint tuple, or `None` if not found. Its
+                `pending_writes` must be in `writes_sort_key` order.
 
         Raises:
             NotImplementedError: Implement this method in your custom checkpoint saver.
@@ -610,6 +635,10 @@ class BaseCheckpointSaver(Generic[V]):
         `PostgresSaver`) override for performance; the return contract is
         fixed here.
 
+        `PendingWrite` carries no `task_path`, so this default replays each
+        checkpoint's writes in `get_tuple`'s `pending_writes` order, which
+        `get_tuple` must return in `writes_sort_key` order.
+
         Args:
             config: Configuration identifying the target checkpoint.
             channels: Channel names to walk for. Empty → empty mapping.
@@ -781,7 +810,7 @@ def get_serializable_checkpoint_metadata(
     """Get checkpoint metadata in a backwards-compatible manner."""
     checkpoint_metadata = get_checkpoint_metadata(config, metadata)
     if "writes" in checkpoint_metadata:
-        checkpoint_metadata.pop("writes")
+        cast(dict[str, Any], checkpoint_metadata).pop("writes")
     return checkpoint_metadata
 
 

libs/checkpoint/langgraph/checkpoint/memory/__init__.py

@@ -25,6 +25,7 @@ from langgraph.checkpoint.base import (
     SerializerProtocol,
     get_checkpoint_id,
     get_checkpoint_metadata,
+    writes_sort_key,
 )
 
 logger = logging.getLogger(__name__)
@@ -139,6 +140,15 @@ class InMemorySaver(
             result[k] = self.serde.loads_typed(vv)
         return result
 
+    def _ordered_writes(
+        self, thread_id: str, checkpoint_ns: str, checkpoint_id: str
+    ) -> list[tuple[str, str, tuple[str, bytes], str]]:
+        stored = self.writes.get((thread_id, checkpoint_ns, checkpoint_id), {})
+        return [
+            stored[k]
+            for k in sorted(stored, key=lambda k: writes_sort_key(stored[k][3], *k))
+        ]
+
     def get_delta_channel_history(
         self, *, config: RunnableConfig, channels: Sequence[str]
     ) -> Mapping[str, DeltaChannelHistory]:
@@ -160,8 +170,8 @@ class InMemorySaver(
             return {}
         thread_id = config["configurable"]["thread_id"]
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
-        checkpoint_id = config["configurable"].get("checkpoint_id", "")
         ns_storage = self.storage.get(thread_id, {}).get(checkpoint_ns, {})
+        checkpoint_id = get_checkpoint_id(config) or max(ns_storage, default="")
 
         chain: list[str] = []
         target_entry = ns_storage.get(checkpoint_id)
@@ -198,9 +208,8 @@ class InMemorySaver(
                     blob_value_by_ch[ch] = self.serde.loads_typed(blob_entry)
                     terminated_here.add(ch)
 
-            step_writes = self.writes.get((thread_id, checkpoint_ns, cp_id), {})
-            for (_task_id, _idx), (tid, ch, serialized, _) in sorted(
-                step_writes.items(), reverse=True
+            for tid, ch, serialized, _ in reversed(
+                self._ordered_writes(thread_id, checkpoint_ns, cp_id)
             ):
                 if ch not in remaining:
                     continue
@@ -246,7 +255,7 @@ class InMemorySaver(
         if checkpoint_id := get_checkpoint_id(config):
             if saved := self.storage[thread_id][checkpoint_ns].get(checkpoint_id):
                 checkpoint, metadata, parent_checkpoint_id = saved
-                writes = self.writes[(thread_id, checkpoint_ns, checkpoint_id)].values()
+                writes = self._ordered_writes(thread_id, checkpoint_ns, checkpoint_id)
                 checkpoint_: Checkpoint = self.serde.loads_typed(checkpoint)
                 return CheckpointTuple(
                     config=config,
@@ -276,7 +285,7 @@ class InMemorySaver(
             if checkpoints := self.storage[thread_id][checkpoint_ns]:
                 checkpoint_id = max(checkpoints.keys())
                 checkpoint, metadata, parent_checkpoint_id = checkpoints[checkpoint_id]
-                writes = self.writes[(thread_id, checkpoint_ns, checkpoint_id)].values()
+                writes = self._ordered_writes(thread_id, checkpoint_ns, checkpoint_id)
                 checkpoint_ = self.serde.loads_typed(checkpoint)
                 return CheckpointTuple(
                     config={
@@ -379,9 +388,9 @@ class InMemorySaver(
                     elif limit is not None:
                         limit -= 1
 
-                    writes = self.writes[
-                        (thread_id, checkpoint_ns, checkpoint_id)
-                    ].values()
+                    writes = self._ordered_writes(
+                        thread_id, checkpoint_ns, checkpoint_id
+                    )
 
                     checkpoint_: Checkpoint = self.serde.loads_typed(checkpoint)
 

libs/checkpoint/langgraph/checkpoint/serde/jsonplus.py

@@ -55,6 +55,7 @@ logger = logging.getLogger(__name__)
 _MAX_WARNED_TYPES = 1000
 _warned_unregistered_types: set[tuple[str, str]] = set()
 _warned_blocked_types: set[tuple[str, str]] = set()
+_warned_unreconstructable_types: set[tuple[str, str]] = set()
 
 
 def _is_safe_json_type(id_list: list[str]) -> bool:
@@ -79,6 +80,27 @@ def _warn_once(
     logger.warning(msg, *args)
 
 
+def _reconstruction_fallback(tup: Any, exc: Exception) -> Any:
+    """Return the serialized payload of an object that could not be rebuilt.
+
+    Returning `None` here would silently erase the value from restored state.
+    """
+    try:
+        module, name, payload = tup[0], tup[1], tup[2]
+    except Exception:
+        return None
+    _warn_once(
+        _warned_unreconstructable_types,
+        (str(module), str(name)),
+        "Could not reconstruct %s.%s from checkpoint (%s); "
+        "returning its serialized data instead.",
+        module,
+        name,
+        type(exc).__name__,
+    )
+    return payload
+
+
 class JsonPlusSerializer(SerializerProtocol):
     """Serializer that uses ormsgpack, with optional fallbacks.
 
@@ -638,6 +660,7 @@ def _create_msgpack_ext_hook(
                 )
             )
         elif code == EXT_CONSTRUCTOR_SINGLE_ARG:
+            tup = None
             try:
                 tup = ormsgpack.unpackb(
                     data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
@@ -649,9 +672,10 @@ def _create_msgpack_ext_hook(
                     return tup[2]
                 # module, name, arg
                 return getattr(importlib.import_module(tup[0]), tup[1])(tup[2])
-            except Exception:
-                return None
+            except Exception as exc:
+                return _reconstruction_fallback(tup, exc)
         elif code == EXT_CONSTRUCTOR_POS_ARGS:
+            tup = None
             try:
                 tup = ormsgpack.unpackb(
                     data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
@@ -662,9 +686,10 @@ def _create_msgpack_ext_hook(
                     return _send_from_args(tup[2])
                 # module, name, args
                 return getattr(importlib.import_module(tup[0]), tup[1])(*tup[2])
-            except Exception:
-                return None
+            except Exception as exc:
+                return _reconstruction_fallback(tup, exc)
         elif code == EXT_CONSTRUCTOR_KW_ARGS:
+            tup = None
             try:
                 tup = ormsgpack.unpackb(
                     data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
@@ -673,9 +698,10 @@ def _create_msgpack_ext_hook(
                     return tup[2]
                 # module, name, kwargs
                 return getattr(importlib.import_module(tup[0]), tup[1])(**tup[2])
-            except Exception:
-                return None
+            except Exception as exc:
+                return _reconstruction_fallback(tup, exc)
         elif code == EXT_METHOD_SINGLE_ARG:
+            tup = None
             try:
                 tup = ormsgpack.unpackb(
                     data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
@@ -686,8 +712,8 @@ def _create_msgpack_ext_hook(
                 return getattr(
                     getattr(importlib.import_module(tup[0]), tup[1]), tup[3]
                 )(tup[2])
-            except Exception:
-                return None
+            except Exception as exc:
+                return _reconstruction_fallback(tup, exc)
         elif code == EXT_PYDANTIC_V1:
             try:
                 tup = ormsgpack.unpackb(

libs/checkpoint/langgraph/store/base/__init__.py

@@ -12,7 +12,7 @@ Core types:
 from __future__ import annotations
 
 from abc import ABC, abstractmethod
-from collections.abc import Iterable
+from collections.abc import Iterable, Mapping
 from datetime import datetime
 from typing import (
     Any,
@@ -473,10 +473,10 @@ class PutOp(NamedTuple):
         the full path would effectively be `"documents/user123/report1"`
     """
 
-    value: dict[str, Any] | None
+    value: Mapping[str, Any] | None
     """The data to store, or `None` to mark the item for deletion.
 
-    The value must be a dictionary with string keys and JSON-serializable values.
+    The value must be a mapping with string keys and JSON-serializable values.
     Setting this to `None` signals that the item should be deleted.
 
     Example:
@@ -771,7 +771,12 @@ class BaseStore(ABC):
 
         Returns:
             The retrieved item or `None` if not found.
+
+        Raises:
+            InvalidNamespaceError: If a namespace label is empty, is not a string,
+                or contains a period (`.`).
         """
+        _validate_namespace_labels(namespace)
         return self.batch(
             [GetOp(namespace, str(key), _ensure_refresh(self.ttl_config, refresh_ttl))]
         )[0]
@@ -801,6 +806,10 @@ class BaseStore(ABC):
         Returns:
             List of items matching the search criteria.
 
+        Raises:
+            InvalidNamespaceError: If a `namespace_prefix` label is empty, is not a
+                string, or contains a period (`.`).
+
         ???+ example "Examples"
 
             Basic filtering:
@@ -840,6 +849,7 @@ class BaseStore(ABC):
                 Natural language search support depends on your store implementation
                 and requires proper embedding configuration.
         """
+        _validate_namespace_labels(namespace_prefix)
         return self.batch(
             [
                 SearchOp(
@@ -857,7 +867,7 @@ class BaseStore(ABC):
         self,
         namespace: tuple[str, ...],
         key: str,
-        value: dict[str, Any],
+        value: Mapping[str, Any],
         index: Literal[False] | list[str] | None = None,
         *,
         ttl: float | None | NotProvided = NOT_PROVIDED,
@@ -869,7 +879,7 @@ class BaseStore(ABC):
                 Example: `("documents", "user123")`
             key: Unique identifier within the namespace. Together with namespace forms
                 the complete path to the item.
-            value: Dictionary containing the item's data. Must contain string keys
+            value: Mapping containing the item's data. Must contain string keys
                 and JSON-serializable values.
             index: Controls how the item's fields are indexed for search:
 
@@ -887,6 +897,11 @@ class BaseStore(ABC):
                 By default, the expiration timer refreshes on both read operations (get/search)
                 and write operations (put/update), whenever the item is included in the operation.
 
+        Raises:
+            InvalidNamespaceError: If the namespace is empty, its root label is
+                `"langgraph"`, or a label is empty, is not a string, or contains a
+                period (`.`).
+
         Note:
             Indexing support depends on your store implementation.
             If you do not initialize the store with indexing capabilities,
@@ -940,7 +955,12 @@ class BaseStore(ABC):
         Args:
             namespace: Hierarchical path for the item.
             key: Unique identifier within the namespace.
+
+        Raises:
+            InvalidNamespaceError: If a namespace label is empty, is not a string,
+                or contains a period (`.`).
         """
+        _validate_namespace_labels(namespace)
         self.batch([PutOp(namespace, str(key), None, ttl=None)])
 
     def list_namespaces(
@@ -969,6 +989,10 @@ class BaseStore(ABC):
             A list of namespace tuples that match the criteria. Each tuple represents a
                 full namespace path up to `max_depth`.
 
+        Raises:
+            InvalidNamespaceError: If a `prefix` or `suffix` label is empty, is not a
+                string, or contains a period (`.`).
+
         ???+ example "Examples":
 
             Setting `max_depth=3`. Given the namespaces:
@@ -984,6 +1008,8 @@ class BaseStore(ABC):
             # [("a", "b", "c"), ("a", "b", "d"), ("a", "b", "f")]
             ```
         """
+        _validate_namespace_labels(prefix or ())
+        _validate_namespace_labels(suffix or ())
         match_conditions = []
         if prefix:
             match_conditions.append(MatchCondition(match_type="prefix", path=prefix))
@@ -1013,7 +1039,12 @@ class BaseStore(ABC):
 
         Returns:
             The retrieved item or `None` if not found.
+
+        Raises:
+            InvalidNamespaceError: If a namespace label is empty, is not a string,
+                or contains a period (`.`).
         """
+        _validate_namespace_labels(namespace)
         return (
             await self.abatch(
                 [
@@ -1052,6 +1083,10 @@ class BaseStore(ABC):
         Returns:
             List of items matching the search criteria.
 
+        Raises:
+            InvalidNamespaceError: If a `namespace_prefix` label is empty, is not a
+                string, or contains a period (`.`).
+
         ???+ example "Examples"
 
             Basic filtering:
@@ -1091,6 +1126,7 @@ class BaseStore(ABC):
                 Natural language search support depends on your store implementation
                 and requires proper embedding configuration.
         """
+        _validate_namespace_labels(namespace_prefix)
         return (
             await self.abatch(
                 [
@@ -1110,7 +1146,7 @@ class BaseStore(ABC):
         self,
         namespace: tuple[str, ...],
         key: str,
-        value: dict[str, Any],
+        value: Mapping[str, Any],
         index: Literal[False] | list[str] | None = None,
         *,
         ttl: float | None | NotProvided = NOT_PROVIDED,
@@ -1122,7 +1158,7 @@ class BaseStore(ABC):
                 Example: `("documents", "user123")`
             key: Unique identifier within the namespace. Together with namespace forms
                 the complete path to the item.
-            value: Dictionary containing the item's data. Must contain string keys
+            value: Mapping containing the item's data. Must contain string keys
                 and JSON-serializable values.
             index: Controls how the item's fields are indexed for search:
 
@@ -1140,6 +1176,11 @@ class BaseStore(ABC):
                 By default, the expiration timer refreshes on both read operations (get/search)
                 and write operations (put/update), whenever the item is included in the operation.
 
+        Raises:
+            InvalidNamespaceError: If the namespace is empty, its root label is
+                `"langgraph"`, or a label is empty, is not a string, or contains a
+                period (`.`).
+
         Note:
             Indexing support depends on your store implementation.
             If you do not initialize the store with indexing capabilities,
@@ -1201,7 +1242,12 @@ class BaseStore(ABC):
         Args:
             namespace: Hierarchical path for the item.
             key: Unique identifier within the namespace.
+
+        Raises:
+            InvalidNamespaceError: If a namespace label is empty, is not a string,
+                or contains a period (`.`).
         """
+        _validate_namespace_labels(namespace)
         await self.abatch([PutOp(namespace, str(key), None)])
 
     async def alist_namespaces(
@@ -1230,6 +1276,10 @@ class BaseStore(ABC):
             A list of namespace tuples that match the criteria. Each tuple represents a
                 full namespace path up to `max_depth`.
 
+        Raises:
+            InvalidNamespaceError: If a `prefix` or `suffix` label is empty, is not a
+                string, or contains a period (`.`).
+
         ???+ example "Examples"
 
             Setting `max_depth=3` with existing namespaces:
@@ -1245,6 +1295,8 @@ class BaseStore(ABC):
             # Returns: [("a", "b", "c"), ("a", "b", "d"), ("a", "b", "f")]
             ```
         """
+        _validate_namespace_labels(prefix or ())
+        _validate_namespace_labels(suffix or ())
         match_conditions = []
         if prefix:
             match_conditions.append(MatchCondition(match_type="prefix", path=prefix))
@@ -1263,6 +1315,14 @@ class BaseStore(ABC):
 def _validate_namespace(namespace: tuple[str, ...]) -> None:
     if not namespace:
         raise InvalidNamespaceError("Namespace cannot be empty.")
+    _validate_namespace_labels(namespace)
+    if namespace[0] == "langgraph":
+        raise InvalidNamespaceError(
+            f'Root label for namespace cannot be "langgraph". Got: {namespace}'
+        )
+
+
+def _validate_namespace_labels(namespace: tuple[str, ...]) -> None:
     for label in namespace:
         if not isinstance(label, str):
             raise InvalidNamespaceError(
@@ -1273,14 +1333,35 @@ def _validate_namespace(namespace: tuple[str, ...]) -> None:
             raise InvalidNamespaceError(
                 f"Invalid namespace label '{label}' found in {namespace}. Namespace labels cannot contain periods ('.')."
             )
+        elif "\x00" in label:
+            raise InvalidNamespaceError(
+                f"Invalid namespace label '{label}' found in {namespace}. Namespace labels cannot contain NUL bytes ('\\x00')."
+            )
         elif not label:
             raise InvalidNamespaceError(
                 f"Namespace labels cannot be empty strings. Got {label} in {namespace}"
             )
-    if namespace[0] == "langgraph":
-        raise InvalidNamespaceError(
-            f'Root label for namespace cannot be "langgraph". Got: {namespace}'
-        )
+
+
+def validate_op_namespace(op: Op) -> None:
+    """Validate the namespace labels an op carries before a store executes it.
+
+    `BaseStore` methods check labels before batching, but ops passed directly to
+    `batch`/`abatch` skip those methods. Stores that serialize namespaces as
+    delimited text should call this for every op they execute, so a label such
+    as `"foo.bar"` cannot address the namespace `("foo", "bar")`.
+
+    Raises:
+        InvalidNamespaceError: If a label is empty, is not a string, or contains
+            a period (`.`).
+    """
+    if isinstance(op, (GetOp, PutOp)):
+        _validate_namespace_labels(op.namespace)
+    elif isinstance(op, SearchOp):
+        _validate_namespace_labels(op.namespace_prefix)
+    elif isinstance(op, ListNamespacesOp):
+        for condition in op.match_conditions or ():
+            _validate_namespace_labels(condition.path)
 
 
 def _ensure_refresh(
@@ -1319,4 +1400,5 @@ __all__ = [
     "ensure_embeddings",
     "tokenize_path",
     "get_text_at_path",
+    "validate_op_namespace",
 ]

libs/checkpoint/langgraph/store/base/batch.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import asyncio
 import functools
 import weakref
-from collections.abc import Callable, Iterable
+from collections.abc import Callable, Iterable, Mapping
 from typing import Any, Literal, TypeVar
 
 from langgraph.store.base import (
@@ -25,6 +25,7 @@ from langgraph.store.base import (
     _ensure_refresh,
     _ensure_ttl,
     _validate_namespace,
+    _validate_namespace_labels,
 )
 
 F = TypeVar("F", bound=Callable)
@@ -86,6 +87,7 @@ class AsyncBatchedBaseStore(BaseStore):
         *,
         refresh_ttl: bool | None = None,
     ) -> Item | None:
+        _validate_namespace_labels(namespace)
         self._ensure_task()
         fut = self._loop.create_future()
         self._aqueue.put_nowait(
@@ -111,6 +113,7 @@ class AsyncBatchedBaseStore(BaseStore):
         offset: int = 0,
         refresh_ttl: bool | None = None,
     ) -> list[SearchItem]:
+        _validate_namespace_labels(namespace_prefix)
         self._ensure_task()
         fut = self._loop.create_future()
         self._aqueue.put_nowait(
@@ -132,7 +135,7 @@ class AsyncBatchedBaseStore(BaseStore):
         self,
         namespace: tuple[str, ...],
         key: str,
-        value: dict[str, Any],
+        value: Mapping[str, Any],
         index: Literal[False] | list[str] | None = None,
         *,
         ttl: float | None | NotProvided = NOT_PROVIDED,
@@ -155,6 +158,7 @@ class AsyncBatchedBaseStore(BaseStore):
         namespace: tuple[str, ...],
         key: str,
     ) -> None:
+        _validate_namespace_labels(namespace)
         self._ensure_task()
         fut = self._loop.create_future()
         self._aqueue.put_nowait((fut, PutOp(namespace, key, None)))
@@ -169,6 +173,8 @@ class AsyncBatchedBaseStore(BaseStore):
         limit: int = 100,
         offset: int = 0,
     ) -> list[tuple[str, ...]]:
+        _validate_namespace_labels(prefix or ())
+        _validate_namespace_labels(suffix or ())
         self._ensure_task()
         fut = self._loop.create_future()
         match_conditions = []
@@ -231,7 +237,7 @@ class AsyncBatchedBaseStore(BaseStore):
         self,
         namespace: tuple[str, ...],
         key: str,
-        value: dict[str, Any],
+        value: Mapping[str, Any],
         index: Literal[False] | list[str] | None = None,
         *,
         ttl: float | None | NotProvided = NOT_PROVIDED,

libs/checkpoint/langgraph/store/base/embed.py

@@ -11,7 +11,7 @@ from __future__ import annotations
 import asyncio
 import functools
 import json
-from collections.abc import Awaitable, Callable, Sequence
+from collections.abc import Awaitable, Callable, Mapping, Sequence
 from typing import Any
 
 from langchain_core.embeddings import Embeddings
@@ -244,6 +244,9 @@ def get_text_at_path(obj: Any, path: str | list[str]) -> list[str]:
         - Multi-field selection: "{field1,field2}"
         - Nested paths in multi-field: "{field1,nested.field2}"
     """
+    if isinstance(obj, Mapping) and not isinstance(obj, dict):
+        obj = dict(obj)
+
     if not path or path == "$":
         return [json.dumps(obj, sort_keys=True, ensure_ascii=False)]
 

libs/checkpoint/langgraph/store/memory/__init__.py

@@ -408,7 +408,7 @@ class InMemoryStore(BaseStore):
                 self._vectors[namespace].pop(key, None)
             else:
                 self._data[namespace][key] = Item(
-                    value=op.value,
+                    value=dict(op.value),
                     key=key,
                     namespace=namespace,
                     created_at=datetime.now(timezone.utc),

libs/checkpoint/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint"
-version = "4.2.0"
+version = "4.3.0"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 requires-python = ">=3.10"

libs/checkpoint/tests/test_conformance_delta.py

@@ -1,37 +0,0 @@
-"""Run delta-channel conformance capabilities against InMemorySaver."""
-
-from __future__ import annotations
-
-import pytest
-
-conformance = pytest.importorskip(
-    "langgraph.checkpoint.conformance",
-    reason="langgraph-checkpoint-conformance not installed",
-)
-
-
-@pytest.mark.asyncio
-async def test_delta_channel_conformance():
-    # Imported inside the test: the module-level importorskip above is what
-    # makes these safe, so they cannot move to the top of the file.
-    from langgraph.checkpoint.conformance import validate  # noqa: PLC0415
-    from langgraph.checkpoint.conformance.initializer import (  # noqa: PLC0415
-        checkpointer_test,
-    )
-
-    from langgraph.checkpoint.memory import InMemorySaver  # noqa: PLC0415
-
-    @checkpointer_test(name="InMemorySaver")
-    async def mem_saver():
-        yield InMemorySaver()
-
-    report = await validate(
-        mem_saver,
-        capabilities={
-            "delta_channel_history",
-        },
-    )
-    for cap, result in report.results.items():
-        if result.passed is False:
-            details = "\n".join(result.failures or [])
-            pytest.fail(f"Capability {cap} failed:\n{details}")

libs/checkpoint/tests/test_jsonplus.py

@@ -7,6 +7,7 @@ import pickle
 import re
 import sys
 import tempfile
+import types
 import uuid
 from collections import deque
 from datetime import date, datetime, time, timezone
@@ -33,12 +34,16 @@ from langgraph.checkpoint.serde.event_hooks import (
     register_serde_event_listener,
 )
 from langgraph.checkpoint.serde.jsonplus import (
+    EXT_CONSTRUCTOR_KW_ARGS,
+    EXT_CONSTRUCTOR_POS_ARGS,
+    EXT_CONSTRUCTOR_SINGLE_ARG,
     EXT_METHOD_SINGLE_ARG,
     InvalidModuleError,
     JsonPlusSerializer,
     _msgpack_enc,
     _msgpack_ext_hook_to_json,
     _warned_blocked_types,
+    _warned_unreconstructable_types,
     _warned_unregistered_types,
 )
 from langgraph.store.base import Item
@@ -821,6 +826,7 @@ def _reset_warned_types() -> None:
     # a fresh slate and assertions about warning emission are stable.
     _warned_unregistered_types.clear()
     _warned_blocked_types.clear()
+    _warned_unreconstructable_types.clear()
 
 
 def test_msgpack_pydantic_warns_by_default(caplog: pytest.LogCaptureFixture) -> None:
@@ -1230,3 +1236,58 @@ def test_msgpack_nested_pydantic_serializes_as_dict(
     # No blocking should occur - inner is serialized as dict, not ext
     assert "blocked" not in caplog.text.lower()
     assert result == obj
+
+
+def test_msgpack_dataclass_from_removed_module_restores_payload(
+    monkeypatch: pytest.MonkeyPatch, caplog: pytest.LogCaptureFixture
+) -> None:
+    @dataclasses.dataclass
+    class SavedObject:
+        value: int
+
+    SavedObject.__module__ = "removed_module"
+    module = types.ModuleType("removed_module")
+    module.SavedObject = SavedObject
+    monkeypatch.setitem(sys.modules, "removed_module", module)
+    serde = JsonPlusSerializer(
+        allowed_msgpack_modules=[("removed_module", "SavedObject")]
+    )
+    dumped = serde.dumps_typed({"state": SavedObject(123)})
+    assert serde.loads_typed(dumped) == {"state": SavedObject(123)}
+
+    monkeypatch.delitem(sys.modules, "removed_module")
+    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
+
+    assert serde.loads_typed(dumped) == {"state": {"value": 123}}
+    assert (
+        "could not reconstruct removed_module.savedobject from checkpoint "
+        "(modulenotfounderror)" in caplog.text.lower()
+    )
+
+
+@pytest.mark.parametrize(
+    ("code", "tup", "expected"),
+    [
+        (EXT_CONSTRUCTOR_SINGLE_ARG, ("missing_module", "Thing", "x"), "x"),
+        (EXT_CONSTRUCTOR_POS_ARGS, ("missing_module", "Thing", [1, 2]), [1, 2]),
+        (
+            EXT_CONSTRUCTOR_KW_ARGS,
+            ("missing_module", "Thing", {"value": 123}),
+            {"value": 123},
+        ),
+        (
+            EXT_METHOD_SINGLE_ARG,
+            ("datetime", "datetime", "not-a-date", "fromisoformat"),
+            "not-a-date",
+        ),
+    ],
+)
+def test_msgpack_failed_reconstruction_returns_payload(
+    code: int, tup: tuple, expected: object
+) -> None:
+    serde = JsonPlusSerializer(allowed_msgpack_modules=True)
+    payload = ormsgpack.packb(
+        ormsgpack.Ext(code, _msgpack_enc(tup)), option=ormsgpack.OPT_NON_STR_KEYS
+    )
+
+    assert serde.loads_typed(("msgpack", payload)) == expected

libs/checkpoint/tests/test_memory.py

@@ -420,6 +420,19 @@ class TestInMemorySaverDeltaChannel:
         assert "seed" not in result
         assert result["writes"] == []
 
+    def test_get_channel_writes_without_checkpoint_id_reads_the_latest(self) -> None:
+        saver = InMemorySaver()
+        thread: RunnableConfig = {
+            "configurable": {"thread_id": "t1", "checkpoint_ns": ""}
+        }
+        parent = saver.put(thread, empty_checkpoint(), {}, {})
+        saver.put_writes(parent, [("messages", "hi")], "task1")
+        saver.put(parent, empty_checkpoint(), {}, {})
+
+        result = saver.get_delta_channel_history(config=thread, channels=["messages"])
+
+        assert result == {"messages": {"writes": [("task1", "messages", "hi")]}}
+
 
 class TestBaseFallbackGetChannelWrites:
     """Exercises the `BaseCheckpointSaver.get_delta_channel_history` default

libs/checkpoint/tests/test_store.py

@@ -1,7 +1,9 @@
 import asyncio
 import json
-from collections.abc import Iterable
+from collections import UserDict
+from collections.abc import Iterable, Mapping
 from datetime import datetime
+from types import MappingProxyType
 from typing import Any
 
 import pytest
@@ -11,10 +13,14 @@ from langgraph.store.base import (
     GetOp,
     InvalidNamespaceError,
     Item,
+    ListNamespacesOp,
+    MatchCondition,
     Op,
     PutOp,
     Result,
+    SearchOp,
     get_text_at_path,
+    validate_op_namespace,
 )
 from langgraph.store.base.batch import AsyncBatchedBaseStore
 from langgraph.store.memory import InMemoryStore
@@ -137,6 +143,18 @@ def test_get_text_at_path() -> None:
     assert get_text_at_path(nested_data, "nested[{invalid}]") == []
 
 
+@pytest.mark.parametrize(
+    "mapping",
+    [
+        UserDict({"text": "searchable"}),
+        MappingProxyType({"text": "searchable"}),
+    ],
+)
+def test_get_text_at_path_with_non_dict_mapping(mapping: Mapping[str, str]) -> None:
+    assert get_text_at_path(mapping, "$") == ['{"text": "searchable"}']
+    assert get_text_at_path(mapping, "text") == ["searchable"]
+
+
 async def test_async_batch_store(mocker: MockerFixture) -> None:
     abatch = mocker.stub()
 
@@ -514,6 +532,127 @@ async def test_cannot_put_empty_namespace() -> None:
     assert (await async_store.aget(("valid", "namespace"), "key")) is None
 
 
+INVALID_NAMESPACES = [("foo.bar",), ("foo\x00",), ("foo", ""), (123,)]
+NAMESPACE_METHODS = ["get", "delete", "search", "prefix", "suffix"]
+
+
+@pytest.mark.parametrize("namespace", INVALID_NAMESPACES)
+@pytest.mark.parametrize("method", NAMESPACE_METHODS)
+def test_rejects_invalid_namespace_labels(
+    mocker: MockerFixture, namespace: tuple, method: str
+) -> None:
+    store = InMemoryStore()
+    batch = mocker.spy(InMemoryStore, "batch")
+    call = {
+        "get": lambda: store.get(namespace, "key"),
+        "delete": lambda: store.delete(namespace, "key"),
+        "search": lambda: store.search(namespace),
+        "prefix": lambda: store.list_namespaces(prefix=namespace),
+        "suffix": lambda: store.list_namespaces(suffix=namespace),
+    }[method]
+
+    with pytest.raises(InvalidNamespaceError):
+        call()
+
+    batch.assert_not_called()
+
+
+@pytest.mark.parametrize("batched", [False, True])
+@pytest.mark.parametrize("namespace", INVALID_NAMESPACES)
+@pytest.mark.parametrize("method", NAMESPACE_METHODS)
+async def test_async_rejects_invalid_namespace_labels(
+    mocker: MockerFixture, batched: bool, namespace: tuple, method: str
+) -> None:
+    # The batched store must reject before queueing: a failure inside the
+    # shared `abatch` would fail every op queued alongside this one.
+    store = MockAsyncBatchedStore() if batched else InMemoryStore()
+    # `MockAsyncBatchedStore` dispatches through `InMemoryStore.batch`.
+    batch = mocker.spy(InMemoryStore, "batch")
+    abatch = mocker.spy(InMemoryStore, "abatch")
+    call = {
+        "get": lambda: store.aget(namespace, "key"),
+        "delete": lambda: store.adelete(namespace, "key"),
+        "search": lambda: store.asearch(namespace),
+        "prefix": lambda: store.alist_namespaces(prefix=namespace),
+        "suffix": lambda: store.alist_namespaces(suffix=namespace),
+    }[method]
+
+    with pytest.raises(InvalidNamespaceError):
+        await call()
+
+    batch.assert_not_called()
+    abatch.assert_not_called()
+
+
+def test_search_and_listing_keep_empty_prefixes_and_wildcards() -> None:
+    store = InMemoryStore()
+    store.put(("tenant", "a_%"), "key", {"v": 1})
+    store.put(("tenant", "b", "child"), "key", {"v": 1})
+
+    assert len(store.search(())) == 2
+    assert [item.namespace for item in store.search(("tenant", "a_%"))] == [
+        ("tenant", "a_%")
+    ]
+    assert sorted(store.list_namespaces(prefix=("tenant", "*"), suffix=("*",))) == [
+        ("tenant", "a_%"),
+        ("tenant", "b", "child"),
+    ]
+
+
+@pytest.mark.parametrize("batched", [False, True])
+async def test_async_search_and_listing_keep_empty_prefixes_and_wildcards(
+    batched: bool,
+) -> None:
+    store = MockAsyncBatchedStore() if batched else InMemoryStore()
+    await store.aput(("tenant", "a_%"), "key", {"v": 1})
+    await store.aput(("tenant", "b", "child"), "key", {"v": 1})
+
+    assert len(await store.asearch(())) == 2
+    assert [item.namespace for item in await store.asearch(("tenant", "a_%"))] == [
+        ("tenant", "a_%")
+    ]
+    assert sorted(
+        await store.alist_namespaces(prefix=("tenant", "*"), suffix=("*",))
+    ) == [("tenant", "a_%"), ("tenant", "b", "child")]
+
+
+@pytest.mark.parametrize("namespace", INVALID_NAMESPACES)
+@pytest.mark.parametrize(
+    "kind", ["get", "put", "delete", "search", "list_prefix", "list_suffix"]
+)
+def test_validate_op_namespace_rejects_invalid_labels(
+    namespace: tuple, kind: str
+) -> None:
+    op = {
+        "get": GetOp(namespace, "key"),
+        "put": PutOp(namespace, "key", {"v": 1}),
+        "delete": PutOp(namespace, "key", None),
+        "search": SearchOp(namespace),
+        "list_prefix": ListNamespacesOp((MatchCondition("prefix", namespace),)),
+        "list_suffix": ListNamespacesOp((MatchCondition("suffix", namespace),)),
+    }[kind]
+
+    with pytest.raises(InvalidNamespaceError):
+        validate_op_namespace(op)
+
+
+def test_validate_op_namespace_allows_empty_prefix_and_wildcards() -> None:
+    for op in (
+        SearchOp(()),
+        ListNamespacesOp(),
+        ListNamespacesOp(
+            (
+                MatchCondition("prefix", ("tenant", "*")),
+                MatchCondition("suffix", ("*",)),
+            )
+        ),
+        GetOp(("tenant", "a_%"), "key"),
+        # Write-only rules belong to `put`, not to op validation.
+        PutOp(("langgraph", "x"), "key", {"v": 1}),
+    ):
+        validate_op_namespace(op)
+
+
 async def test_async_batch_store_deduplication(mocker: MockerFixture) -> None:
     abatch = mocker.spy(InMemoryStore, "batch")
     store = MockAsyncBatchedStore()

libs/checkpoint/uv.lock

@@ -19,16 +19,16 @@ wheels = [
 
 [[package]]
 name = "anyio"
-version = "4.12.1"
+version = "4.14.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "exceptiongroup", marker = "python_full_version < '3.11'" },
     { name = "idna" },
     { name = "typing-extensions", marker = "python_full_version < '3.13'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/96/f0/5eb65b2bb0d09ac6776f2eb54adee6abe8228ea05b20a5ad0e4945de8aac/anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703", size = 228685, upload-time = "2026-01-06T11:45:21.246Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/61/cc/a381afa6efea9f496eff839d4a6a1aed3bfafc7b3ab4b0d1b243a12573dd/anyio-4.14.2.tar.gz", hash = "sha256:cfa139f3ed1a23ee8f88a145ddb5ac7605b8bbfd8592baacd7ce3d8bb4313c7f", size = 260176, upload-time = "2026-07-12T20:29:07.082Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/38/0e/27be9fdef66e72d64c0cdc3cc2823101b80585f8119b5c112c2e8f5f7dab/anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c", size = 113592, upload-time = "2026-01-06T11:45:19.497Z" },
+    { url = "https://files.pythonhosted.org/packages/da/35/f2287558c17e29fafc8ef3daf819bb9834061cfa43bff8014f7df7f63bdc/anyio-4.14.2-py3-none-any.whl", hash = "sha256:9f505dda5ac9f0c8309b5e8bd445a8c2bf7246f3ce950121e45ea15bc41d1494", size = 125813, upload-time = "2026-07-12T20:29:05.763Z" },
 ]
 
 [[package]]
@@ -51,11 +51,11 @@ wheels = [
 
 [[package]]
 name = "certifi"
-version = "2026.1.4"
+version = "2026.10.19"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/e0/2d/a891ca51311197f6ad14a7ef42e2399f36cf2f9bd44752b3dc4eab60fdc5/certifi-2026.1.4.tar.gz", hash = "sha256:ac726dd470482006e014ad384921ed6438c457018f4b3d204aea4281258b2120", size = 154268, upload-time = "2026-01-04T02:42:41.825Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a6/bd/1436c50cc46699de0230fbaacc1d1de7bfec413176099949e9d5112e88f2/certifi-2026.10.19.tar.gz", hash = "sha256:035c1e85572b141bf1c3a3eff0e33a8eb74917522f2559075ff8d2fea780a1ae", size = 137598, upload-time = "2026-10-20T02:24:16.604Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/e6/ad/3cc14f097111b4de0040c83a525973216457bbeeb63739ef1ed275c1c021/certifi-2026.1.4-py3-none-any.whl", hash = "sha256:9943707519e4add1115f44c2bc244f782c0249876bf51b6599fee1ffbedd685c", size = 152900, upload-time = "2026-01-04T02:42:40.15Z" },
+    { url = "https://files.pythonhosted.org/packages/c4/51/29046e48f693c54e5b7412216d447a1d8362c9653148d98c02cdf65fa733/certifi-2026.10.19-py3-none-any.whl", hash = "sha256:42d35340cc5b9ba78e818ddbff0c5b1c2b779de448a340fd1b989f5fa8670e1b", size = 136464, upload-time = "2026-10-20T02:24:15.072Z" },
 ]
 
 [[package]]
@@ -183,7 +183,7 @@ name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions", marker = "python_full_version < '3.11'" },
+    { name = "typing-extensions" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" }
 wheels = [
@@ -268,9 +268,10 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.5.2"
+version = "1.6.5"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
+    { name = "httpx" },
     { name = "jsonpatch" },
     { name = "langchain-protocol" },
     { name = "langsmith" },
@@ -281,9 +282,9 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/6e/58/3ad53096eee1e07728e8219ded30ae308b0f2b8b7b26b8ebb6371917c0f5/langchain_core-1.5.2.tar.gz", hash = "sha256:2d13ab35b42eec63d4669a483776b8cdd778ee764107149369fb369d84c08c41", size = 972322, upload-time = "2026-07-28T16:38:37.977Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ed/ed/ceecd3bfcfc77a94cf30a9f1506e907fdea447458825e01914a72d2d1a6f/langchain_core-1.6.5.tar.gz", hash = "sha256:bdb059fef65473fd444558dbb18f50901657402c43ceed9dc0fdc7b76a393c6b", size = 1007041, upload-time = "2026-09-24T18:11:06.487Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/ca/e4/024e402a65f5ee2eb6ae9667b5ffc5f08776cb4e712f5a11ee1997d56083/langchain_core-1.5.2-py3-none-any.whl", hash = "sha256:a687dd7c3b22c6c1294e1c1eeb61fb6f3a308e6015a1d75b576b3836ad5b5aed", size = 561643, upload-time = "2026-07-28T16:38:36.38Z" },
+    { url = "https://files.pythonhosted.org/packages/59/68/447ac7e734990b7ed9dcfc3b6dee9a4cd4d4169e296429fa71a9a47c1c7b/langchain_core-1.6.5-py3-none-any.whl", hash = "sha256:54c7b0e9314b9084fb04405bb33dc5d32986d512d92b7b8863899cd5f6267556", size = 572136, upload-time = "2026-09-24T18:11:04.837Z" },
 ]
 
 [[package]]
@@ -300,7 +301,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.2.0"
+version = "4.3.0"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },
@@ -1014,14 +1015,14 @@ wheels = [
 
 [[package]]
 name = "pytest-mock"
-version = "3.15.1"
+version = "3.16.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pytest" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/68/14/eb014d26be205d38ad5ad20d9a80f7d201472e08167f0bb4361e251084a9/pytest_mock-3.15.1.tar.gz", hash = "sha256:1849a238f6f396da19762269de72cb1814ab44416fa73a8686deac10b0d87a0f", size = 34036, upload-time = "2025-09-16T16:37:27.081Z" }
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 [[package]]

libs/cli/README.md

@@ -103,6 +103,8 @@ The CLI uses a `langgraph.json` configuration file with these key settings:
 }
 ```
 
+Git dependencies should use credential-free URLs. The CLI conservatively scans direct `langgraph.json` dependencies, common Python package files, uv project and lock files, and common Node.js package and lock files for HTTP Git URLs with userinfo. This check is not exhaustive: generated Docker builds can copy other files, including nested requirement or constraint files, into image layers without scanning them. For private dependencies, provide short-lived credentials through your build environment's secret-backed Git credential helper. Do not store credentials in copied files such as `langgraph.json` or `pip_config_file`.
+
 See the [full documentation](https://reference.langchain.com/python/langgraph-cli) for detailed configuration options.
 
 ## Development

libs/cli/examples/graph_prerelease_reqs/deps/additional_deps/pyproject.toml

@@ -5,5 +5,5 @@ description = "Test for prerelease stuff"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
-  "langgraph==1.1.5"
+  "langgraph==1.2.6"
 ]

libs/cli/examples/graph_prerelease_reqs/pyproject.toml

@@ -7,7 +7,7 @@ requires-python = ">=3.10"
 dependencies = [
   "langchain-openai==1.1.14",
   "langchain-anthropic==1.4.6",
-  "langgraph==1.1.5"
+  "langgraph==1.2.6"
 ]
 
 [tool.uv]

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-
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-
-[[package]]
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-version = "1.3.1"
-description = "Sniff out which async library your code is running under"
-optional = false
-python-versions = ">=3.7"
-groups = ["main"]
-files = [
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-]
-
-[[package]]
-name = "typing-extensions"
-version = "4.12.2"
-description = "Backported and Experimental Type Hints for Python 3.8+"
-optional = false
-python-versions = ">=3.8"
-groups = ["main"]
-markers = "python_version < \"3.11\""
-files = [
-    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
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-]
-
-[metadata]
-lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "ec5109729f30d2033a10a10e8f8d3ed94c7d96d5d31025b4815b0123664bb063"

libs/cli/generate_schema.py

@@ -23,6 +23,7 @@ from langgraph_cli.schemas import (
     GraphDef,
     HttpConfig,
     IndexConfig,
+    PriorityConfig,
     SecurityConfig,
     SerdeConfig,
     StoreConfig,
@@ -113,6 +114,7 @@ def add_descriptions_to_schema(schema, cls):
                 StoreConfig,
                 IndexConfig,
                 AuthConfig,
+                PriorityConfig,
                 SecurityConfig,
                 HttpConfig,
                 CorsConfig,

libs/cli/js-examples/package.json

@@ -21,28 +21,30 @@
     "test:all": "yarn test && yarn test:int && yarn lint:langgraph"
   },
   "dependencies": {
-    "@langchain/core": "^1.2.4",
-    "@langchain/langgraph": "^1.4.8"
+    "@langchain/core": "^1.2.13",
+    "@langchain/langgraph": "^1.4.18"
   },
   "resolutions": {
-    "@langchain/langgraph-checkpoint": "1.0.4"
+    "@langchain/langgraph-checkpoint": "1.0.4",
+    "jest/**/js-yaml": "3.15.2",
+    "@eslint/eslintrc/js-yaml": "4.3.2"
   },
   "devDependencies": {
-    "@eslint/eslintrc": "^3.3.6",
+    "@eslint/eslintrc": "^3.3.7",
     "@eslint/js": "^10.0.1",
     "@tsconfig/recommended": "^1.0.13",
     "@types/jest": "^30.0.0",
-    "@typescript-eslint/eslint-plugin": "^8.65.0",
-    "@typescript-eslint/parser": "^8.65.0",
-    "dotenv": "^17.4.2",
-    "eslint": "^10.8.0",
+    "@typescript-eslint/eslint-plugin": "^8.70.1",
+    "@typescript-eslint/parser": "^8.70.1",
+    "dotenv": "^18.0.4",
+    "eslint": "^10.11.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-import": "^2.32.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^5.5.6",
-    "jest": "^30.4.2",
-    "prettier": "^3.9.6",
-    "ts-jest": "^29.4.12",
+    "jest": "^30.5.2",
+    "prettier": "^3.9.9",
+    "ts-jest": "^29.4.14",
     "typescript": "^7.0.2"
   }
 }

libs/cli/js-monorepo-example/apps/agent/package.json

@@ -9,8 +9,8 @@
   },
   "dependencies": {
     "@js-monorepo-example/shared": "*",
-    "@langchain/core": "^1.2.4",
-    "@langchain/langgraph": "^1.4.8"
+    "@langchain/core": "^1.2.13",
+    "@langchain/langgraph": "^1.4.18"
   },
   "devDependencies": {
     "typescript": "^7.0.2"

libs/cli/js-monorepo-example/package.json

@@ -17,18 +17,18 @@
     "lint": "eslint 'apps/**/*.ts' 'libs/**/*.ts'"
   },
   "devDependencies": {
-    "turbo": "^2.10.8",
+    "turbo": "^2.11.5",
     "typescript": "^7.0.2",
     "@tsconfig/recommended": "^1.0.13",
-    "@eslint/eslintrc": "^3.3.6",
+    "@eslint/eslintrc": "^3.3.7",
     "@eslint/js": "^10.0.1",
-    "eslint": "^10.8.0",
+    "eslint": "^10.11.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-import": "^2.27.5",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^5.5.6",
-    "@typescript-eslint/eslint-plugin": "^8.65.0",
-    "@typescript-eslint/parser": "^8.65.0",
-    "prettier": "^3.9.6"
+    "@typescript-eslint/eslint-plugin": "^8.70.1",
+    "@typescript-eslint/parser": "^8.70.1",
+    "prettier": "^3.9.9"
   }
 }

libs/cli/js-monorepo-example/yarn.lock

@@ -2,6 +2,24 @@
 # yarn lockfile v1
 
 
+"@cacheable/memory@^2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cacheable/memory/-/memory-2.2.0.tgz#72aeb8b051f6d597d10ac8595b94ad8302bd2239"
+  integrity sha512-CTLKqLItRCEixEAewD3/j9DB3/o96gpTPD4eJ1v+DGOlxZRZncRQkGYqqnAGCscYd6RNeXfGeiuCphsPtqyIfQ==
+  dependencies:
+    "@cacheable/utils" "^2.5.0"
+    "@keyv/bigmap" "^1.3.1"
+    hookified "^1.15.1"
+    keyv "^5.6.0"
+
+"@cacheable/utils@^2.5.0":
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/@cacheable/utils/-/utils-2.5.0.tgz#534c91113aa48fe43baedb169550b6ee070ef303"
+  integrity sha512-buipgOVDkkPXNR5+xBpDw7Zk2n1EvU7qBJCNUcL7rhQ//kfpOXPAvQ511Os0vpLYJ1pZnvudNytkQt2hst3wqA==
+  dependencies:
+    hashery "^1.5.1"
+    keyv "^5.6.0"
+
 "@cfworker/json-schema@^4.0.2":
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/@cfworker/json-schema/-/json-schema-4.1.1.tgz#4a2a3947ee9fa7b7c24be981422831b8674c3be6"
@@ -42,10 +60,10 @@
   dependencies:
     "@types/json-schema" "^7.0.15"
 
-"@eslint/eslintrc@^3.3.6":
-  version "3.3.6"
-  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-3.3.6.tgz#d22bfd6b3a7d8e1f2c0b2f2e6de111b53ec6e13e"
-  integrity sha512-l2Ul9PrHsPCKcEY/ac7VgFj9D80C7S68sOKc618SyHDPK36s1XcFebXY0iTzUVn4Yq+YbwvSnDmCz9yxjX+QrA==
+"@eslint/eslintrc@^3.3.7":
+  version "3.3.7"
+  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-3.3.7.tgz#76d3dedec4a30ea32df797bf8a0085c1311b7316"
+  integrity sha512-F42g89Qd5oAWtp0k0nnSrjziAKza7w8SVT4mStc18LZMaRb4J1HQAHLCalEtDCxrTuksx7NU9qsmeLwpOfPqWw==
   dependencies:
     ajv "^6.14.0"
     debug "^4.3.2"
@@ -53,7 +71,7 @@
     globals "^14.0.0"
     ignore "^5.2.0"
     import-fresh "^3.2.1"
-    js-yaml "^4.3.0"
+    js-yaml "^4.3.2"
     minimatch "^3.1.5"
     strip-json-comments "^3.1.1"
 
@@ -67,10 +85,10 @@
   resolved "https://registry.yarnpkg.com/@eslint/object-schema/-/object-schema-3.0.5.tgz#88e9bf4d11d2b19c082e78ebe7ce88724a5eb091"
   integrity sha512-vqTaUEgxzm+YDSdElad6PiRoX4t8VGDjCtt05zn4nU810UIx/uNEV7/lZJ6KwFThKZOzOxzXy48da+No7HZaMw==
 
-"@eslint/plugin-kit@^0.7.2":
-  version "0.7.2"
-  resolved "https://registry.yarnpkg.com/@eslint/plugin-kit/-/plugin-kit-0.7.2.tgz#4b0962f3f2c7ce8bc98b3ecfe34525c09d2cb729"
-  integrity sha512-+CNAzxglkrpNf/kKywqQfk74QjtceuOE7Qm+AF8miRvPF/wmmK5+OJOgVh3AVTT3RP2mH3+FOaxlE5v72owk0A==
+"@eslint/plugin-kit@^0.7.3":
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/@eslint/plugin-kit/-/plugin-kit-0.7.3.tgz#cc7268cc36405b331ef92db1bc37971f21d66fe1"
+  integrity sha512-IkO+/KEUvwbVpiURZg+P7zF74z5Jxe0UgJxVni+RtoHQ6IZieXaO02kmadomap/q+l6bc/jdPGGqTjhuZnuz1Q==
   dependencies:
     "@eslint/core" "^1.2.1"
     levn "^0.4.1"
@@ -103,10 +121,23 @@
   resolved "https://registry.yarnpkg.com/@isaacs/cliui/-/cliui-9.0.0.tgz#4d0a3f127058043bf2e7ee169eaf30ed901302f3"
   integrity sha512-AokJm4tuBHillT+FpMtxQ60n8ObyXBatq7jD2/JA9dxbDDokKQm8KMht5ibGzLVU9IJDIKK4TPKgMHEYMn3lMg==
 
-"@langchain/core@^1.2.4":
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.2.4.tgz#3916181e00f93b2e3b5801ab8273c07d144d75ce"
-  integrity sha512-GIrJktdsFPx8gM0C3VyikkeYGZAV7iRIzUJuS5tFatiKLExybou0LI0MuxH9kksN38quyfWdQDl20lIEAEVkVA==
+"@keyv/bigmap@^1.3.1":
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/@keyv/bigmap/-/bigmap-1.3.1.tgz#fc82fa83947e7ff68c6798d08907db842771ef2c"
+  integrity sha512-WbzE9sdmQtKy8vrNPa9BRnwZh5UF4s1KTmSK0KUVLo3eff5BlQNNWDnFOouNpKfPKDnms9xynJjsMYjMaT/aFQ==
+  dependencies:
+    hashery "^1.4.0"
+    hookified "^1.15.0"
+
+"@keyv/serialize@^1.1.1":
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/@keyv/serialize/-/serialize-1.1.1.tgz#0c01dd3a3483882af7cf3878d4e71d505c81fc4a"
+  integrity sha512-dXn3FZhPv0US+7dtJsIi2R+c7qWYiReoEh5zUntWCf4oSpMNib8FDhSoed6m3QyZdx5hK7iLFkYk3rNxwt8vTA==
+
+"@langchain/core@^1.2.13":
+  version "1.2.13"
+  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.2.13.tgz#4ea4eb0308a25af350f75de2fbf34aecb819177e"
+  integrity sha512-ADGTxZ84n3civruUX1LlTOdua/PDGoni2U6TmKTX7hvRU2Jlepu8vLJI4Wnwj45KUKhUCrW94Il12Q2bxE3e8A==
   dependencies:
     "@cfworker/json-schema" "^4.0.2"
     "@standard-schema/spec" "^1.1.0"
@@ -116,35 +147,35 @@
     p-queue "^6.6.2"
     zod "^3.25.76 || ^4"
 
-"@langchain/langgraph-checkpoint@^1.1.3":
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.1.3.tgz#891f2f9a2e96cf2ab0920f9240f9ad1e0a86a4ab"
-  integrity sha512-wgzdQNeEsdw1e+4lvlj0tdq/RYR/k1vPin10g0ymGoehZDDgd9nvIllGXSXN4TFgF9sf5qQP/KTkOcLfeseIhA==
+"@langchain/langgraph-checkpoint@^1.1.5":
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.1.5.tgz#c793177f9afcce31a1e9922f317f88fec1254282"
+  integrity sha512-BwDwl5VeTOh6CVuiIPgsUgfK51vTJDMSbFcSCUfjJWsl8/DPdK/mbv+ejxJstkSk/BlSPMP4JfXWcN6jD2ea2Q==
 
-"@langchain/langgraph-sdk@~1.9.26":
-  version "1.9.28"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.9.28.tgz#1664cc7b6f2c1509ddffecf17d805a26e70a7e1a"
-  integrity sha512-4j3XuM0PvtmAbL8mPfBS99ez3+ytRfgbOpAR/nOeaejTRF3Q9dNw2QnaGLGng8wLPtGLoSj+SYgUOVxy9Bv9vg==
+"@langchain/langgraph-sdk@~1.12.0":
+  version "1.12.0"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.12.0.tgz#b063a7eba0a66f51cbc841a824626a47eca1eec9"
+  integrity sha512-F3AOZjKZRUGmE3FzY+RaVZI6WzXOkwnuF7jqgto6rDPSnO9OdVdYGvwGDi3jjRGf5xLoDtX2dpsR9z5KptU+5A==
   dependencies:
-    "@langchain/protocol" "^0.0.18"
+    "@langchain/protocol" "^0.0.19"
     "@types/json-schema" "^7.0.15"
     p-queue "^9.0.1"
     p-retry "^7.1.1"
 
-"@langchain/langgraph@^1.4.8":
-  version "1.4.8"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.4.8.tgz#65ef5635b5554cd32f502a3808b92d8371998a99"
-  integrity sha512-DN1Np1XefdBEbp1qBKlt39cwoL743AAGpR5Ipja0gY2YbWvsoQnOTIrjnj/orSAhaUYsdTKS8VSWdFzsHZo6Ig==
+"@langchain/langgraph@^1.4.18":
+  version "1.4.18"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.4.18.tgz#c8cc4ea734834262fdb00ae6a45a0849620e4fd2"
+  integrity sha512-yrMMJ9hk2NVMD2xU2WoVrgFawAU6s/RzEl/dX9BhlyxZHazo1wHY35z4K2BIBzTUh4z3giCzrUoqRAqW2CWpWg==
   dependencies:
-    "@langchain/langgraph-checkpoint" "^1.1.3"
-    "@langchain/langgraph-sdk" "~1.9.26"
-    "@langchain/protocol" "^0.0.18"
+    "@langchain/langgraph-checkpoint" "^1.1.5"
+    "@langchain/langgraph-sdk" "~1.12.0"
+    "@langchain/protocol" "^0.0.19"
     "@standard-schema/spec" "1.1.0"
 
-"@langchain/protocol@^0.0.18":
-  version "0.0.18"
-  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.18.tgz#6d96155e7263c958fbce6d4b7241b4725b72fbad"
-  integrity sha512-XW1egQtPfsGI41w2AMZNFZrUIwFSQHTjVMZs0OaTpCAvht/QLoaPN8FQcsysMVypOhupG28J29yOorrc70otBQ==
+"@langchain/protocol@^0.0.19":
+  version "0.0.19"
+  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.19.tgz#7fe43fed115dc34b3b4c246e8d5283fbcbfab7b0"
+  integrity sha512-9hKcRrH7cBX6gfutdfXPoft1OCchHe4FEpALoDJMl5Qu+n/YG5ynZmyu8+8cxORlPwHBoKTxggvXz+76M1yX1Q==
 
 "@pkgr/core@^0.3.6":
   version "0.3.6"
@@ -166,35 +197,35 @@
   resolved "https://registry.yarnpkg.com/@tsconfig/recommended/-/recommended-1.0.13.tgz#269fce3ad04ca70b93269ff44cca81b950f542da"
   integrity sha512-sySRuBfMKyKO/j2ZAhR8kSembhjuPEV4Ra3AHtmWLq51+iGaudr45crPSzNC5b7/Ctrh9dfUpBuTlYrH6rM58Q==
 
-"@turbo/darwin-64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.10.8.tgz#0ae7cde6b95b82b0a4fe406ffea64bdfcf68a0ee"
-  integrity sha512-po+7rfJfUnFXjWlcoN2RwhErgzCdRtBc1T26vYPcywHlggmCQiQe1uWaE4j+BibI2uY9/2pDoFzMN0rmSaPFOw==
+"@turbo/darwin-64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.11.5.tgz#6ddc580c2b7d05e578ca1c06b3f61473f4b7b00e"
+  integrity sha512-KdY4y7BBjIisl+jAkb3FFaRjClGqHyaeHCcVcCT8LBzFFwUu6thgfxyRZAx0uL4KoxLmH+iOan8UhVf/aDDcaA==
 
-"@turbo/darwin-arm64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.10.8.tgz#18a9127c0a0d9c5ad7de49bdb27e7032f8946334"
-  integrity sha512-+zB2btDJ00lnPRuqOvpVvgl4x34k/djZQGZTTCfjn7JgNCl8QFY5Njo5+dqkY1g/+9gbbsnAvWm9CmJg9ebcXA==
+"@turbo/darwin-arm64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.11.5.tgz#a756c67bb828cd00d03e909769dd39453c1f1e69"
+  integrity sha512-ToZDGi2u410+TfRtC/O1/LpujGgvNJoRBZnwVXob7oO0+3OSlwIO3zofXKUvwQvlba7a8ZXPyCZwufjAXd7f0w==
 
-"@turbo/linux-64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.10.8.tgz#1677672f5760d272c0a0608686fe8b8b29491fdb"
-  integrity sha512-K1dxqiVisyN7cViVsfQLs6xscQbYuI8aO2nbUhFURDACgEDfZRdP/b4CCxeosBJpcMfhYyiibWqJorCnvz9kKg==
+"@turbo/linux-64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.11.5.tgz#b95c05218aebb06c06e5f991d48c55b78dc5e005"
+  integrity sha512-Ub2d/nAbdWLaSytcEaPp1wm/YuIvHEIqNrCRMI/UgOGyFdOhgxm8VyWPAJilQWRYxYVrqEUoy2K5S5K8SG50rA==
 
-"@turbo/linux-arm64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.10.8.tgz#dbdb5aef9e53bb4c88357dafc19f79138ec29253"
-  integrity sha512-Gi77ibVnrE1fEmvr+/wBD/yvRqhwp/RQuCp2+//lv1U1wNFFyVg0V7Wj8FG9FXPFAw5QHReo8rxc9+wBSDZjzA==
+"@turbo/linux-arm64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.11.5.tgz#c7a1d1a44c8c8dcff4b72fbafe9a5059c8fb668a"
+  integrity sha512-JQjmGxp724Wuft9FAxPMtmBur1CEdUyxJ+FVoIvKkgj63rXHl9PYCWrsU2tMjVi609XTQ3M8vZD9Yc9qVAVYrw==
 
-"@turbo/windows-64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.10.8.tgz#451c3b5421c9ce573c764b1efacae5ad4d1312ee"
-  integrity sha512-znnLO1haJPYTHoKMKwlAvlkjRiYbbhBzME6wIGaMd+fwir23U6jVd1ecaTWWi1fbnRVqxMfgDBKseQ/hLKb83g==
+"@turbo/windows-64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.11.5.tgz#60bdaaa7e8ba32f32623b31a1c75f6c3db400a0c"
+  integrity sha512-AFkbPmXNd8XgCi/66YEHR2bVl3gtusXyDihTIVEPAuSB+7ulLmJePvz1unWPVKLHdbCTTIdKq2mpJ1B1e3lJXw==
 
-"@turbo/windows-arm64@2.10.8":
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.10.8.tgz#5661ca9b75713aece06d319493e48a366a4cd05c"
-  integrity sha512-VN30vh3b3Czh2WzYHNTfF1FE0YMZ5aHsLO8dBMGHJewA6792wX6iJR8ZxlzFW6WdOu0gEAKIvlYhfyT81Wkm4Q==
+"@turbo/windows-arm64@2.11.5":
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.11.5.tgz#18bd5a0ad30c4e094995786bd78916b6de6b5c1c"
+  integrity sha512-52ziXYP3snGOxjv19xA3WL1WDKv9Q6uDAa/7EKIR5j4hocMlYURkrOHbJ2ZZI+VfPU5MwKpcGeRfHxHJu7Y/Pw==
 
 "@types/esrecurse@^4.3.1":
   version "4.3.1"
@@ -216,110 +247,110 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==
 
-"@typescript-eslint/eslint-plugin@^8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.65.0.tgz#0a58df6fea8c0bf6b396f518077099bc8b762bb5"
-  integrity sha512-IEgob78X12rHpUmtcwFsXhZdVGJtwTVP8FiCLZkR6GlYVrl2PcuB+KhCE5BlVC/eQpQnu8WXRtkHZuPar+gCRA==
+"@typescript-eslint/eslint-plugin@^8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.70.1.tgz#d404bac4cb04e4dcd20086e46e13c952bd0771e0"
+  integrity sha512-nDNrUQ/4ruSNYbu749TRY7cfrzPtoLHEXSNBI8aaNY32LlZCajixqRf3FqcKC4p5Cam4VOHYx/t+i5+nKXvrqA==
   dependencies:
     "@eslint-community/regexpp" "^4.12.2"
-    "@typescript-eslint/scope-manager" "8.65.0"
-    "@typescript-eslint/type-utils" "8.65.0"
-    "@typescript-eslint/utils" "8.65.0"
-    "@typescript-eslint/visitor-keys" "8.65.0"
+    "@typescript-eslint/scope-manager" "8.70.1"
+    "@typescript-eslint/type-utils" "8.70.1"
+    "@typescript-eslint/utils" "8.70.1"
+    "@typescript-eslint/visitor-keys" "8.70.1"
     ignore "^7.0.5"
     natural-compare "^1.4.0"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/parser@^8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.65.0.tgz#5295c1058c0a1dd746ef28baaf9c0341dbdf03dc"
-  integrity sha512-CZ4nMxWwgu1HEEFNkeaCptra9QCtkmKdgf3sWh1rl1trIhmxLilgTV4cwcbQ4wemnT4sWQN8CaKOmdYx+g2gMA==
+"@typescript-eslint/parser@^8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.70.1.tgz#6c99b7b954efc05dae179001c8b477d1a8948dcf"
+  integrity sha512-nO974WLllwhSFWQXnMLj6nDGa8f0khKEz1JzpPJ1u7Vm/4X1X6ZHajpoknU4bb41vJyMB0HHVyS2GqdhWfIXZw==
   dependencies:
-    "@typescript-eslint/scope-manager" "8.65.0"
-    "@typescript-eslint/types" "8.65.0"
-    "@typescript-eslint/typescript-estree" "8.65.0"
-    "@typescript-eslint/visitor-keys" "8.65.0"
+    "@typescript-eslint/scope-manager" "8.70.1"
+    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/typescript-estree" "8.70.1"
+    "@typescript-eslint/visitor-keys" "8.70.1"
     debug "^4.4.3"
 
-"@typescript-eslint/project-service@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.65.0.tgz#65fbbc9a1591abffaeab5513200f848271cb0aa5"
-  integrity sha512-SxnPhbTsGahizDgbu7oqFH/xVtzIqMd/s+WtnSxNxJZJpLbdT5IPdzg8EZxO3+PoKahXmwJLeNQOpKJb3/bi7Q==
+"@typescript-eslint/project-service@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.70.1.tgz#d5635594cc8a573f0e15a772b1704e93a00134c1"
+  integrity sha512-62xOgboPfwc3/IgPSX/W6oQR3ZbF04194FPGUGH8HL8iLFHbt/456/8Ph1wLNUgVF+s94FlHoipBsz+v7+LMnA==
   dependencies:
-    "@typescript-eslint/tsconfig-utils" "^8.65.0"
-    "@typescript-eslint/types" "^8.65.0"
+    "@typescript-eslint/tsconfig-utils" "^8.70.1"
+    "@typescript-eslint/types" "^8.70.1"
     debug "^4.4.3"
 
-"@typescript-eslint/scope-manager@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.65.0.tgz#9547202ce7e608e7b6283df585703b980a0ea70d"
-  integrity sha512-Esbl8OSYiVxBokYgWPf7VVWg/BE798wXhimnn9ML9Pt5qoDf8bfQlgjlKXR/k98+AcNzlLKYrpCcrcuZ9DZLgg==
+"@typescript-eslint/scope-manager@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.70.1.tgz#0feeae4da2d279b960cdbfe5e0a02fbf1195e93f"
+  integrity sha512-Pa0EeSeAusQc1WbjQMac+YfenewYTBu0KjgYvkUKwhXaHUKbFog23Dm/rp0DX/6tyYOQ3Xl1a+3EcFNZynGHCw==
   dependencies:
-    "@typescript-eslint/types" "8.65.0"
-    "@typescript-eslint/visitor-keys" "8.65.0"
+    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/visitor-keys" "8.70.1"
 
-"@typescript-eslint/tsconfig-utils@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.65.0.tgz#36f168fcdbb1295f7446ff0379667f98c3cf1bf3"
-  integrity sha512-j6GzGqCiRdA7Qhur2VVmKZAkBLfnHFQfx4TaJGL9RMveZqCo48jSHHO0DTgizEnGhtWnqmbtCUSrqSkdiY/0Hg==
+"@typescript-eslint/tsconfig-utils@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.70.1.tgz#e9353a6e5f3498a29b40946ca3e11f6166fef09e"
+  integrity sha512-jumze1fPI+sDOaM2TWGQdn39PDxTr7TZGeuyLkAbNyx2vtMT3uRnVKChN0hfht5V2TugphJzF6bYXvBcE09qqg==
 
-"@typescript-eslint/tsconfig-utils@^8.65.0":
-  version "8.66.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.66.0.tgz#3a89066c507aa30541dc176804685b4b444e1e52"
-  integrity sha512-9D5gLYZG4rOjcoag8MQ/fWI8WqA9wcPDyOGyWtWFhvM1lHRbliqUSPIY5J3zqCU1tvSwzXxnnjhQhz5Ne7mJ4g==
+"@typescript-eslint/tsconfig-utils@^8.70.1":
+  version "8.71.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.71.0.tgz#83a69c9a514af8f5ff099cc6c0d609c273e8f039"
+  integrity sha512-Z1UlWHADEK2Mlb9NpWfDeSjqoZ5EyrOv4R3eQpbkzqn/EwaIdOpXXupEA1+0ZIOSJSZZDBHG0BrQyN8zUG6Pwg==
 
-"@typescript-eslint/type-utils@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.65.0.tgz#d316d7522d93cff4cd14f305e02f3df2d804f9c1"
-  integrity sha512-YjaZ7PRI5qY7ax2L3PbvX0rRyGtipAReCWs0mhhDBHjH/vl0g0BonaGXrKdKpMbIIsMIwDgbk/xzkBTyAltS5g==
+"@typescript-eslint/type-utils@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.70.1.tgz#6ea36f2c7dc0776c1c8e1c380b4896f00bc4c27f"
+  integrity sha512-7zKTnyvaVWqzLZHPFQtX1hVHqgkMC+WebPWakNCSyrQVbIP1AM0L0TlBZtACldIRb6PptI8Odk+jyZ5kP3B1VA==
   dependencies:
-    "@typescript-eslint/types" "8.65.0"
-    "@typescript-eslint/typescript-estree" "8.65.0"
-    "@typescript-eslint/utils" "8.65.0"
+    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/typescript-estree" "8.70.1"
+    "@typescript-eslint/utils" "8.70.1"
     debug "^4.4.3"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/types@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.65.0.tgz#3e86738416a777c8b8925ab46745f48ecf904c9f"
-  integrity sha512-JSSwWNy+H0E/01jJEM+hrX6N0OFDzFzeIhHFSAS01tlVaevpG8cFyYRPhS5yjGOvBUx3sqQHVMjCL1CAZZMxBg==
+"@typescript-eslint/types@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.70.1.tgz#2022b9d07d057174eba25b9bbd289641d262a196"
+  integrity sha512-Dm1ypdhhrGCTyyehxElhgJ6kgk8MVCv5qXdoOVqPr1uqk42jX8KjrZqhROvdShczA8qrDoYiOWn1ykWlx2k81Q==
 
-"@typescript-eslint/types@^8.65.0":
-  version "8.66.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.66.0.tgz#3cacab94d3b564c1d48c56eb37b89f89a6d48479"
-  integrity sha512-H6gcYaSDOyvL3AD/jHUtUFo2jqGgn/F6nuyuZSu0QTesxL+cP4dQoIMrODRofuJC09g64+WgZ6tE19Y1N2YIFQ==
+"@typescript-eslint/types@^8.70.1":
+  version "8.71.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.71.0.tgz#a230a121e71665060afe27d1f1ad110371f9451e"
+  integrity sha512-cJ4OoxPGWvFnBTnSZyaU+qJzGTqPTGJY+gDchj6cRyLRdmIdt4rcsE4twj+zPfrNiWuVi38wijHzShL++Z9atQ==
 
-"@typescript-eslint/typescript-estree@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.65.0.tgz#f1f514808f6aa713e2d678ae8ff592a65e1632af"
-  integrity sha512-JboAE2swaYt4tb1fHhHTABE2K+OLy09XfcTbhnk4Pw96f9dd2e9iYsJ28gBggHlo5z5x1rkyWvcPoTuNTd4oGg==
+"@typescript-eslint/typescript-estree@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.70.1.tgz#ced48fee6f7043835d2edfed9786ae74813a3c99"
+  integrity sha512-TU8PwyGN0PQJUcE96mw8eCQ44SmxGdQlJmlWakHaHQ15eIuuvye5yNtmh/i6oS88jzXVQB71xdNkbkB/fMwL0g==
   dependencies:
-    "@typescript-eslint/project-service" "8.65.0"
-    "@typescript-eslint/tsconfig-utils" "8.65.0"
-    "@typescript-eslint/types" "8.65.0"
-    "@typescript-eslint/visitor-keys" "8.65.0"
+    "@typescript-eslint/project-service" "8.70.1"
+    "@typescript-eslint/tsconfig-utils" "8.70.1"
+    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/visitor-keys" "8.70.1"
     debug "^4.4.3"
     minimatch "^10.2.2"
     semver "^7.7.3"
     tinyglobby "^0.2.15"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/utils@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.65.0.tgz#afedd974a0c8deeef553b509df5800bafd615a72"
-  integrity sha512-gXiwIHsYreboxeJucHKPvgwl7dXt50mF8s1/c00cP/WoVTyWKFdtfhRWwZiXYFU5H2O8vVoSLNrexFZjYS/SGA==
+"@typescript-eslint/utils@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.70.1.tgz#6a97887cee702df513692f5cdc7f79baeef48e02"
+  integrity sha512-Esgul8MsnKnRLdYU2Eb2cRV9bS5HJYtKj1ByJnOzzG2M58DGdSUQ1jUuILxipqcpB2h9WLrbD5GijIWUjX/Tqw==
   dependencies:
     "@eslint-community/eslint-utils" "^4.9.1"
-    "@typescript-eslint/scope-manager" "8.65.0"
-    "@typescript-eslint/types" "8.65.0"
-    "@typescript-eslint/typescript-estree" "8.65.0"
+    "@typescript-eslint/scope-manager" "8.70.1"
+    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/typescript-estree" "8.70.1"
 
-"@typescript-eslint/visitor-keys@8.65.0":
-  version "8.65.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.65.0.tgz#e3704c13cb4a1c22454c1abf28ff4737e15018c6"
-  integrity sha512-8C71BQkGjiMmXtop7pHVJu1l2NNShFdkCyD6a2ezzs5vU/L3LRtb69EtcteFwz0mYMPzIgOw0n6OV4VBUWZd7A==
+"@typescript-eslint/visitor-keys@8.70.1":
+  version "8.70.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.70.1.tgz#b4cde0ed16982bd963a6310fcae554f59fd14124"
+  integrity sha512-Vwj9lUIW5Xq3wQ9w6gv3R86g1hMK8f2zNOdGTAgeXUMMXFK78G9ruCjjqutHMNJc0+CH7LYRnHeUB9IT8wFmcw==
   dependencies:
-    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/types" "8.70.1"
     eslint-visitor-keys "^5.0.0"
 
 "@typescript/typescript-aix-ppc64@7.0.2":
@@ -550,20 +581,31 @@ base64-js@^1.5.1:
   integrity sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==
 
 brace-expansion@^1.1.7:
-  version "1.1.12"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.12.tgz#ab9b454466e5a8cc3a187beaad580412a9c5b843"
-  integrity sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==
+  version "1.1.21"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.21.tgz#edf4fab5c64d051aea5a8def49aba1c7522279f3"
+  integrity sha512-9zeA+KLZNNzglF2TPKRQEDyx6Yby7daAkuy8MiPzpXPsYDWi/DRM8jmwUDxokQjYqBpv5DgPiwD4h4ZZSy1Ujw==
   dependencies:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
 
 brace-expansion@^5.0.8:
-  version "5.0.9"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-5.0.9.tgz#7c72438809b5fa5babf54199a1f1c281a6984fcf"
-  integrity sha512-ScQ4IuvIEF1TMlP7Zt+vjJ//9zlPb2SDcxWxM3bk8s6t6GGdJ7KO1dCcTidOPJKePW30LE/2cT7wCyPho9/Wxg==
+  version "5.0.12"
+  resolved "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.12.tgz#995fbb4750a77c4d16a7dc942ff2ca6ef8e675ec"
+  integrity sha512-YovQ3rzhaLMIrDjNDMkNS01tea93qhEhG5xy8f6+R0l+dw3Ki+5sCoIoI942iuLZTHWogWktgwVDhU09iNEimQ==
   dependencies:
     balanced-match "^4.0.2"
 
+cacheable@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/cacheable/-/cacheable-2.5.0.tgz#d142d41043e5a865f6053cc70ef4e3ad068bd5ce"
+  integrity sha512-60cyAOytib/OzBw1JNSoSV/boK1AtHryDIjvVBk7XbN4ugfkM3+Sry7fEjNgPMGgOjuaZPAp8ruZ0Cxafwyq9g==
+  dependencies:
+    "@cacheable/memory" "^2.2.0"
+    "@cacheable/utils" "^2.5.0"
+    hookified "^1.15.0"
+    keyv "^5.6.0"
+    qified "^0.10.1"
+
 call-bind-apply-helpers@^1.0.0, call-bind-apply-helpers@^1.0.1, call-bind-apply-helpers@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz#4b5428c222be985d79c3d82657479dbe0b59b2d6"
@@ -881,17 +923,17 @@ eslint-visitor-keys@^5.0.0, eslint-visitor-keys@^5.0.1:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-5.0.1.tgz#9e3c9489697824d2d4ce3a8ad12628f91e9f59be"
   integrity sha512-tD40eHxA35h0PEIZNeIjkHoDR4YjjJp34biM0mDvplBe//mB+IHCqHDGV7pxF+7MklTvighcCPPZC7ynWyjdTA==
 
-eslint@^10.8.0:
-  version "10.8.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.8.0.tgz#e6d19907a3f090a53a022261ba34c5ff6d04908b"
-  integrity sha512-nuKKvN+oIBO0koN7Tm7dlkmnkc21mtt0QJLwAKzjLq14y6lRTdVG36MZHJ8eQHwdJMwZbQNMlPOYedMq/oVJvQ==
+eslint@^10.11.0:
+  version "10.11.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.11.0.tgz#304d1591b7c6a327e3f64b4f550f99fda160ae20"
+  integrity sha512-P7a6UEEqb9G95MYAtqkmsTbVXIYyzIfl6NGOIJk162PaahFxFyeGcrlXYFSiagECg4sEm8IseJdZBKR3rx6MsQ==
   dependencies:
     "@eslint-community/eslint-utils" "^4.8.0"
     "@eslint-community/regexpp" "^4.12.2"
     "@eslint/config-array" "^0.23.5"
     "@eslint/config-helpers" "^0.7.0"
     "@eslint/core" "^1.2.1"
-    "@eslint/plugin-kit" "^0.7.2"
+    "@eslint/plugin-kit" "^0.7.3"
     "@humanfs/node" "^0.16.6"
     "@humanwhocodes/module-importer" "^1.0.1"
     "@humanwhocodes/retry" "^0.4.2"
@@ -906,7 +948,7 @@ eslint@^10.8.0:
     esquery "^1.7.0"
     esutils "^2.0.2"
     fast-deep-equal "^3.1.3"
-    file-entry-cache "^8.0.0"
+    file-entry-cache "11.1.5 || >11.1.6 <12"
     find-up "^5.0.0"
     glob-parent "^6.0.2"
     ignore "^5.2.0"
@@ -994,12 +1036,12 @@ fdir@^6.5.0:
   resolved "https://registry.yarnpkg.com/fdir/-/fdir-6.5.0.tgz#ed2ab967a331ade62f18d077dae192684d50d350"
   integrity sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==
 
-file-entry-cache@^8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-8.0.0.tgz#7787bddcf1131bffb92636c69457bbc0edd6d81f"
-  integrity sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==
+"file-entry-cache@11.1.5 || >11.1.6 <12":
+  version "11.1.5"
+  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-11.1.5.tgz#c8210eb055de63e68685ccfb6a017e386d4577d0"
+  integrity sha512-+PFTHITI08JIGhnNpGNI8T8inUpgZfk3GNEqfT9R2zZV2iFXg3CvqzSl/uEhs7TSGujYRELEANyDvS8Fj7+S7Q==
   dependencies:
-    flat-cache "^4.0.0"
+    flat-cache "^6.1.23"
 
 find-up@^5.0.0:
   version "5.0.0"
@@ -1009,18 +1051,19 @@ find-up@^5.0.0:
     locate-path "^6.0.0"
     path-exists "^4.0.0"
 
-flat-cache@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-4.0.1.tgz#0ece39fcb14ee012f4b0410bd33dd9c1f011127c"
-  integrity sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==
+flat-cache@^6.1.23:
+  version "6.1.23"
+  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-6.1.23.tgz#735dc888c271868d7301b3bbb8edba5028afb61d"
+  integrity sha512-f++BY9pTk+983xK1FLzlLpmM0i0z+jHmx3QESGkURMXujQZz1k5wzwX6hjnQ8goaD0B+sYnDK1yZ6MTyZfUaqA==
   dependencies:
-    flatted "^3.2.9"
-    keyv "^4.5.4"
+    cacheable "^2.5.0"
+    flatted "^3.4.2"
+    hookified "^1.15.0"
 
-flatted@^3.2.9:
-  version "3.4.2"
-  resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.4.2.tgz#f5c23c107f0f37de8dbdf24f13722b3b98d52726"
-  integrity sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA==
+flatted@^3.4.2:
+  version "3.4.4"
+  resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.4.4.tgz#aeeca2a506303f0cee61c59e6c9f2a88d2f29fc6"
+  integrity sha512-5+ybhBZANEJxaH3X5evAFatUxLfEHSr7n6kYJ+1Qd0mUqr4eu9gIf6GDbWHf8RJijHrjjO8G+la14SlL2SeS1Q==
 
 for-each@^0.3.3, for-each@^0.3.5:
   version "0.3.5"
@@ -1140,6 +1183,13 @@ has-tostringtag@^1.0.2:
   dependencies:
     has-symbols "^1.0.3"
 
+hashery@^1.4.0, hashery@^1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/hashery/-/hashery-1.5.1.tgz#4ba82ad54911ac617467870845d57a9fe508a400"
+  integrity sha512-iZyKG96/JwPz1N55vj2Ie2vXbhu440zfUfJvSwEqEbeLluk7NnapfGqa7LH0mOsnDxTF85Mx8/dyR6HfqcbmbQ==
+  dependencies:
+    hookified "^1.15.0"
+
 hasown@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/hasown/-/hasown-2.0.2.tgz#003eaf91be7adc372e84ec59dc37252cedb80003"
@@ -1147,6 +1197,16 @@ hasown@^2.0.2:
   dependencies:
     function-bind "^1.1.2"
 
+hookified@^1.15.0, hookified@^1.15.1:
+  version "1.15.1"
+  resolved "https://registry.yarnpkg.com/hookified/-/hookified-1.15.1.tgz#b1fafeaa5489cdc29cb85546a8f837ed4ffbbcb6"
+  integrity sha512-MvG/clsADq1GPM2KGo2nyfaWVyn9naPiXrqIe4jYjXNZQt238kWyOGrsyc/DmRAQ+Re6yeo6yX/yoNCG5KAEVg==
+
+hookified@^2.1.1:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/hookified/-/hookified-2.2.0.tgz#1d024ac1668973dd5bcc4a96ab9ccdb7639ef8d4"
+  integrity sha512-p/LgFzRN5FeoD3DLS6bkUapeye6E4SI6yJs6KetENd18S+FBthqYq2amJUWpt5z0EQwwHemidjY5OqJGEKm5uA==
+
 ignore@^5.2.0:
   version "5.3.2"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.3.2.tgz#3cd40e729f3643fd87cb04e50bf0eb722bc596f5"
@@ -1385,18 +1445,13 @@ js-tiktoken@^1.0.12:
   dependencies:
     base64-js "^1.5.1"
 
-js-yaml@^4.3.0:
-  version "4.3.1"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.3.1.tgz#01216c001d67f48e2cd560d708c7af21090a3848"
-  integrity sha512-CY6crGq313MX8GkwvB7tzgp99vjQxY1++5y10/BKN/GUfHqWaOGQMNZkBvqSzsZKWk/ijwHlWzzkLulsGHhjWQ==
+js-yaml@^4.3.2:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.3.2.tgz#8e44fb14a2643c59726bb15787b5f1512cb3d3fb"
+  integrity sha512-SFNOvSJ+Dgf/9An904Yx+CgSlIPCkIpao4qo51lpee25TIRejdH3rhR4EZMGoNx3/TP3O+wzWuiTFl4sqbltzA==
   dependencies:
     argparse "^2.0.1"
 
-json-buffer@3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/json-buffer/-/json-buffer-3.0.1.tgz#9338802a30d3b6605fbe0613e094008ca8c05a13"
-  integrity sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ==
-
 json-schema-traverse@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
@@ -1414,12 +1469,12 @@ json5@^1.0.2:
   dependencies:
     minimist "^1.2.0"
 
-keyv@^4.5.4:
-  version "4.5.4"
-  resolved "https://registry.yarnpkg.com/keyv/-/keyv-4.5.4.tgz#a879a99e29452f942439f2a405e3af8b31d4de93"
-  integrity sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==
+keyv@^5.6.0:
+  version "5.6.0"
+  resolved "https://registry.yarnpkg.com/keyv/-/keyv-5.6.0.tgz#03044074c6b4d072d0a62c7b9fa649537baf0105"
+  integrity sha512-CYDD3SOtsHtyXeEORYRx2qBtpDJFjRTGXUtmNEMGyzYOKj1TE3tycdlho7kA1Ufx9OYWZzg52QFBGALTirzDSw==
   dependencies:
-    json-buffer "3.0.1"
+    "@keyv/serialize" "^1.1.1"
 
 "langsmith@>=0.5.0 <1.0.0":
   version "0.7.1"
@@ -1652,16 +1707,23 @@ prettier-linter-helpers@^1.0.1:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^3.9.6:
-  version "3.9.6"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.6.tgz#b3ea5146515d40fc53f18aa63f74dfab1e10dbf6"
-  integrity sha512-OpN0zzVdiaiAhxpuuj5efpIS4sY9j7bY6uR5mnj5yPzGkdkjNKSJeUThPb60Jw29QuAZgA4o+/iB49kFiaBX6g==
+prettier@^3.9.9:
+  version "3.9.9"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
+  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
 
 punycode@^2.1.0:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.3.1.tgz#027422e2faec0b25e1549c3e1bd8309b9133b6e5"
   integrity sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==
 
+qified@^0.10.1:
+  version "0.10.1"
+  resolved "https://registry.yarnpkg.com/qified/-/qified-0.10.1.tgz#0640bf21bbe6ca540db290ad8f5fde4d870b8bda"
+  integrity sha512-+Owyggi9IxT1ePKGafcI87ubSmxol6smwJ+RAHDQlx9+9cPwFWDiKFFCPuWhr9ignlGpZ9vDQLw67N4dcTVFEA==
+  dependencies:
+    hookified "^2.1.1"
+
 reflect.getprototypeof@^1.0.6, reflect.getprototypeof@^1.0.9:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/reflect.getprototypeof/-/reflect.getprototypeof-1.0.10.tgz#c629219e78a3316d8b604c765ef68996964e7bf9"
@@ -1908,17 +1970,17 @@ tsconfig-paths@^3.15.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-turbo@^2.10.8:
-  version "2.10.8"
-  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.10.8.tgz#09457cb7db79710586da455a29bccc05f15b1b72"
-  integrity sha512-9+8YX5QOkGXzZxcIykTHgaooRHGMWO+jfdyRK0o+rN0U7hBIig2MrJ8r/aNzIPDPhdA73SGb0O+tIztaModTMg==
+turbo@^2.11.5:
+  version "2.11.5"
+  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.11.5.tgz#e7223abd0555b978d3efe1b00ea9a98f43afb7ab"
+  integrity sha512-qLXheqz3TUvJpHIV6MUBwkNkvwKxMVG/QsimyiKT9DfNWPHJ294G/i5nDaH+fbHJt3UH7orubNNxAqYkbUNGAQ==
   optionalDependencies:
-    "@turbo/darwin-64" "2.10.8"
-    "@turbo/darwin-arm64" "2.10.8"
-    "@turbo/linux-64" "2.10.8"
-    "@turbo/linux-arm64" "2.10.8"
-    "@turbo/windows-64" "2.10.8"
-    "@turbo/windows-arm64" "2.10.8"
+    "@turbo/darwin-64" "2.11.5"
+    "@turbo/darwin-arm64" "2.11.5"
+    "@turbo/linux-64" "2.11.5"
+    "@turbo/linux-arm64" "2.11.5"
+    "@turbo/windows-64" "2.11.5"
+    "@turbo/windows-arm64" "2.11.5"
 
 type-check@^0.4.0, type-check@~0.4.0:
   version "0.4.0"

libs/cli/langgraph_cli/__init__.py

@@ -1 +1 @@
-__version__ = "0.4.31"
+__version__ = "0.4.38"

libs/cli/langgraph_cli/cli.py

@@ -847,6 +847,7 @@ def dev(
         store=config_json.get("store"),
         wait_for_client=wait_for_client,
         auth=config_json.get("auth"),
+        priority=config_json.get("priority"),
         http=config_json.get("http"),
         ui=config_json.get("ui"),
         ui_config=config_json.get("ui_config"),

libs/cli/langgraph_cli/config.py

@@ -6,6 +6,7 @@ import re
 import shlex
 import textwrap
 from collections import Counter
+from collections.abc import Iterable
 from typing import Literal, NamedTuple
 
 import click
@@ -36,6 +37,10 @@ DISALLOWED_BUILD_COMMAND_CHARS = [
 # This blocks background execution (cmd &) while allowing command
 # chaining (cmd1 && cmd2) which is common in build commands.
 _SINGLE_AMPERSAND_RE = re.compile(r"(?<!&)&(?:&&)*(?!&)")
+_GIT_HTTP_AUTHORITY_RES = (
+    re.compile(r"git\+https?://(?P<authority>[^/\s\"']+)", re.I),
+    re.compile(r"\bgit\s*=\s*[\"']https?://(?P<authority>[^/\s\"']+)", re.I),
+)
 _API_VERSION_PATTERN = re.compile(
     r"^(?P<major>\d+)"
     r"(?:\.(?P<minor>\d+))?"
@@ -78,6 +83,62 @@ def has_disallowed_build_command_content(command: str) -> bool:
     return False
 
 
+def _has_git_http_url_userinfo(dependency: str) -> bool:
+    """Check whether a Git HTTP URL contains userinfo."""
+    return any(
+        "@" in match.group("authority")
+        for pattern in _GIT_HTTP_AUTHORITY_RES
+        for match in pattern.finditer(dependency)
+    )
+
+
+def _validate_git_http_url_userinfo(
+    values: Iterable[str], *, source: pathlib.Path | None = None
+) -> None:
+    """Reject credential-bearing Git HTTP URLs without echoing their values."""
+    if not any(_has_git_http_url_userinfo(value) for value in values):
+        return
+    message = (
+        "Git dependency URLs must not contain credentials or other URL "
+        "userinfo because generated Dockerfiles and image layers can retain "
+        "them. Use a credential-free Git URL and provide short-lived "
+        "credentials through your build environment's secret-backed Git "
+        "credential helper."
+    )
+    if source is not None:
+        message += f" Found in: {source}"
+    raise click.UsageError(message)
+
+
+def _validate_git_http_url_userinfo_files(paths: Iterable[pathlib.Path]) -> None:
+    """Reject credential-bearing Git HTTP URLs in dependency files."""
+    for path in paths:
+        path = path.resolve()
+        if not path.is_file():
+            continue
+        try:
+            contents = path.read_text(encoding="utf-8", errors="replace")
+        except OSError:
+            raise click.UsageError(
+                f"Could not inspect dependency file for embedded credentials: {path}"
+            ) from None
+        _validate_git_http_url_userinfo([contents], source=path)
+
+
+def _validate_local_dependency_files(config_path: pathlib.Path, config: Config) -> None:
+    """Validate dependency files copied into a non-uv Python image."""
+    paths: list[pathlib.Path] = []
+    for dependency in config["dependencies"]:
+        if not isinstance(dependency, str) or not dependency.startswith("."):
+            continue
+        root = (config_path.parent / dependency).resolve()
+        paths.extend(
+            root / name
+            for name in ("requirements.txt", "pyproject.toml", "setup.py", "setup.cfg")
+        )
+    _validate_git_http_url_userinfo_files(paths)
+
+
 MIN_PYTHON_VERSION = "3.11"
 DEFAULT_PYTHON_VERSION = "3.11"
 
@@ -320,7 +381,9 @@ def _get_source_kind(config: Config) -> str | None:
     return kind if isinstance(kind, str) else None
 
 
-def validate_config(config: Config) -> Config:
+def validate_config(
+    config: Config, *, source_path: pathlib.Path | None = None
+) -> Config:
     """Validate a configuration dictionary."""
 
     graphs = config.get("graphs", {})
@@ -379,6 +442,7 @@ def validate_config(config: Config) -> Config:
         "store": config.get("store"),
         "auth": config.get("auth"),
         "encryption": config.get("encryption"),
+        "priority": config.get("priority"),
         "http": config.get("http"),
         # Pass through webhooks config so it can be injected into the image
         "webhooks": config.get("webhooks"),
@@ -415,6 +479,15 @@ def validate_config(config: Config) -> Config:
                 '  "source": {"kind": "uv", "root": ".."}'
             )
 
+    _validate_git_http_url_userinfo(
+        (
+            dependency
+            for dependency in config["dependencies"]
+            if isinstance(dependency, str)
+        ),
+        source=source_path,
+    )
+
     source = config.get("source")
     source_kind = _get_source_kind(config)
     if source is not None and not isinstance(source, dict):
@@ -534,6 +607,19 @@ def validate_config(config: Config) -> Config:
                     f"Invalid encryption.path format: '{encryption_conf['path']}'. "
                     "Must be in format './path/to/file.py:attribute_name'"
                 )
+    # Validate priority config
+    if priority_conf := config.get("priority"):
+        if "path" in priority_conf:
+            if ":" not in priority_conf["path"]:
+                raise ValueError(
+                    f"Invalid priority.path format: '{priority_conf['path']}'. "
+                    "Must be in format './path/to/file.py:attribute_name'"
+                )
+            if _is_node_graph(priority_conf["path"]):
+                raise ValueError(
+                    "JavaScript priority callbacks are not supported: "
+                    f"'{priority_conf['path']}'. Use a Python file or module instead."
+                )
     if http_conf := config.get("http"):
         if "app" in http_conf:
             if ":" not in http_conf["app"]:
@@ -577,6 +663,7 @@ _KNOWN_CONFIG_KEYS = {
     "store",
     "auth",
     "encryption",
+    "priority",
     "http",
     "webhooks",
     "checkpointer",
@@ -609,7 +696,7 @@ def validate_config_file(config_path: pathlib.Path) -> Config:
     """Load and validate a configuration file."""
     with open(config_path) as f:
         config = json.load(f)
-    validated = validate_config(config)
+    validated = validate_config(config, source_path=config_path.resolve())
     # Enforce the package.json doesn't enforce an
     # incompatible Node.js version
     if validated.get("node_version"):
@@ -1008,6 +1095,49 @@ def _update_encryption_path(
     )
 
 
+def _update_priority_path(
+    config_path: pathlib.Path, config: Config, local_deps: LocalDeps
+) -> None:
+    """Update priority.path to use Docker container paths."""
+    priority_conf = config.get("priority")
+    if not priority_conf or not (path_str := priority_conf.get("path")):
+        return
+
+    module_str, sep, attr_str = path_str.partition(":")
+    if not sep or not module_str.startswith("."):
+        return  # Already validated or absolute path
+
+    resolved = config_path.parent / module_str
+    if not resolved.exists():
+        raise FileNotFoundError(
+            f"Priority file not found: {resolved} (from {path_str})"
+        )
+    if not resolved.is_file():
+        raise IsADirectoryError(f"Priority path must be a file: {resolved}")
+
+    # Check faux packages first (they take precedence)
+    for faux_path, (_, destpath) in local_deps.faux_pkgs.items():
+        if resolved.is_relative_to(faux_path):
+            new_path = f"{destpath}/{resolved.relative_to(faux_path)}:{attr_str}"
+            priority_conf["path"] = new_path
+            return
+
+    # Check real packages
+    for real_path in local_deps.real_pkgs:
+        if resolved.is_relative_to(real_path):
+            new_path = (
+                f"/deps/{real_path.name}/{resolved.relative_to(real_path)}:{attr_str}"
+            )
+            priority_conf["path"] = new_path
+            return
+
+    raise ValueError(
+        f"Priority file '{resolved}' not covered by dependencies.\n"
+        "Add its parent directory to the 'dependencies' array in your config.\n"
+        f"Current dependencies: {config['dependencies']}"
+    )
+
+
 def _update_checkpointer_path(
     config_path: pathlib.Path, config: Config, local_deps: LocalDeps
 ) -> None:
@@ -1141,6 +1271,9 @@ def _build_runtime_env_vars(config: Config) -> list[str]:
     if (encryption_config := config.get("encryption")) is not None:
         env_vars.append(f"ENV LANGGRAPH_ENCRYPTION='{json.dumps(encryption_config)}'")
 
+    if (priority_config := config.get("priority")) is not None:
+        env_vars.append(f"ENV LANGGRAPH_PRIORITY='{json.dumps(priority_config)}'")
+
     if (http_config := config.get("http")) is not None:
         env_vars.append(f"ENV LANGGRAPH_HTTP='{json.dumps(http_config)}'")
 
@@ -1280,6 +1413,7 @@ def python_config_to_docker(
             api_version=api_version,
             build_tools_to_uninstall=build_tools_to_uninstall,
         )
+    _validate_local_dependency_files(config_path, config)
     if pip_installer == "auto":
         if _image_supports_uv(base_image):
             pip_installer = "uv"
@@ -1307,6 +1441,8 @@ def python_config_to_docker(
     _update_auth_path(config_path, config, local_deps)
     # Rewrite encryption path, so it points to the correct location in the Docker container
     _update_encryption_path(config_path, config, local_deps)
+    # Rewrite priority path, so it points to the correct location in the Docker container
+    _update_priority_path(config_path, config, local_deps)
     # Rewrite checkpointer path, so it points to the correct location in the Docker container
     _update_checkpointer_path(config_path, config, local_deps)
     # Rewrite HTTP app path, so it points to the correct location in the Docker container
@@ -1490,7 +1626,18 @@ def node_config_to_docker(
 ) -> tuple[str, dict[str, str]]:
     # Calculate paths for monorepo support
     install_root = (
-        pathlib.Path(build_context).resolve() if build_context else config_path.parent
+        pathlib.Path(build_context).resolve()
+        if build_context
+        else config_path.parent.resolve()
+    )
+    config_root = config_path.parent.resolve()
+    dependency_roots = (
+        (install_root, config_root) if install_root != config_root else (install_root,)
+    )
+    _validate_git_http_url_userinfo_files(
+        root / name
+        for root in dependency_roots
+        for name in ("package.json", "package-lock.json", "yarn.lock", "pnpm-lock.yaml")
     )
     install_cmd = install_command or _get_node_pm_install_cmd(install_root)
     if build_context:

libs/cli/langgraph_cli/exec.py

@@ -1,12 +1,18 @@
 import asyncio
 import signal
 import sys
-from collections.abc import Callable
+from collections.abc import Callable, Coroutine
 from contextlib import contextmanager
-from typing import cast
+from typing import Any, Protocol, TypeVar, cast
 
 import click.exceptions
 
+_T = TypeVar("_T")
+
+
+class CommandRunner(Protocol):
+    def run(self, coro: Coroutine[Any, Any, _T]) -> _T: ...
+
 
 @contextmanager
 def Runner():
@@ -38,11 +44,8 @@ async def subp_exec(
     on_stdout: Callable[[str], bool | None] | None = None,
 ) -> tuple[str | None, str | None]:
     if verbose:
-        cmd_str = f"+ {cmd} {' '.join(map(str, args))}"
-        if input:
-            print(cmd_str, " <\n", "\n".join(filter(None, input.splitlines())), sep="")
-        else:
-            print(cmd_str)
+        # Never echo stdin: it can carry secrets (docker login --password-stdin).
+        print(f"+ {cmd} {' '.join(map(str, args))}")
     if wait:
         await asyncio.sleep(wait)
 

libs/cli/langgraph_cli/host_backend.py

@@ -2,18 +2,125 @@
 
 from __future__ import annotations
 
-from typing import Any
+from dataclasses import dataclass
+from typing import Any, Literal
+from urllib.parse import urlparse
 
 import click
 import httpx
 
+CLOUD_CONTROL_PLANE_URL = "https://api.host.langchain.com"
+CLOUD_DASHBOARD_URL = "https://smith.langchain.com"
+CLOUD_DOMAIN = "langchain.com"
+CLOUD_API_HOST = "api.smith.langchain.com"
+CLOUD_CONTROL_PLANE_HOST = "api.host.langchain.com"
+CLOUD_DASHBOARD_HOST = "smith.langchain.com"
+CONTROL_PLANE_PATH = "/api-host"
+LANGSMITH_API_PATHS = ("/api/v1", "/api")
+LOCAL_HOSTNAMES = ("localhost", "127.0.0.1")
+MAX_PAGE_SIZE = 100
+SourceName = Literal["internal_docker", "internal_source", "external_docker"]
+
+
+@dataclass(frozen=True, slots=True)
+class ControlPlaneEndpoints:
+    control_plane_url: str
+    dashboard_url: str
+
+    @classmethod
+    def resolve(
+        cls, host_url: str | None, langsmith_endpoint: str | None
+    ) -> ControlPlaneEndpoints:
+        if host_url:
+            return cls.from_control_plane_url(host_url)
+        if langsmith_endpoint:
+            return cls.from_langsmith_endpoint(langsmith_endpoint)
+        return cls(CLOUD_CONTROL_PLANE_URL, CLOUD_DASHBOARD_URL)
+
+    @property
+    def is_cloud(self) -> bool:
+        hostname = urlparse(self.control_plane_url).hostname or ""
+        return hostname == CLOUD_CONTROL_PLANE_HOST or hostname.endswith(
+            f".{CLOUD_CONTROL_PLANE_HOST}"
+        )
+
+    @classmethod
+    def from_control_plane_url(cls, url: str) -> ControlPlaneEndpoints:
+        control_plane_url = url.rstrip("/")
+        hostname = urlparse(control_plane_url).hostname or ""
+        if control_plane_url.endswith(CONTROL_PLANE_PATH):
+            return cls(control_plane_url, control_plane_url[: -len(CONTROL_PLANE_PATH)])
+        if hostname in LOCAL_HOSTNAMES:
+            return cls(control_plane_url, control_plane_url)
+        return cls(control_plane_url, _cloud_dashboard_for(hostname))
+
+    @classmethod
+    def from_langsmith_endpoint(cls, endpoint: str) -> ControlPlaneEndpoints:
+        parsed = urlparse(endpoint.rstrip("/"))
+        hostname = parsed.hostname or ""
+        if _is_cloud_host(hostname):
+            return cls.from_control_plane_url(
+                f"https://{_cloud_control_plane_host_for(hostname)}"
+            )
+        root = f"{parsed.scheme}://{parsed.netloc}{_without_api_path(parsed.path)}"
+        return cls(f"{root}{CONTROL_PLANE_PATH}", root)
+
+
+def _is_cloud_host(hostname: str) -> bool:
+    return hostname == CLOUD_DOMAIN or hostname.endswith(f".{CLOUD_DOMAIN}")
+
+
+def _cloud_control_plane_host_for(langsmith_api_host: str) -> str:
+    if langsmith_api_host.endswith(f".{CLOUD_API_HOST}"):
+        region = langsmith_api_host[: -len(CLOUD_API_HOST)]
+        return f"{region}{CLOUD_CONTROL_PLANE_HOST}"
+    return CLOUD_CONTROL_PLANE_HOST
+
+
+def _cloud_dashboard_for(control_plane_host: str) -> str:
+    if control_plane_host.endswith(f".{CLOUD_CONTROL_PLANE_HOST}"):
+        region = control_plane_host[: -len(CLOUD_CONTROL_PLANE_HOST) - 1]
+        return f"https://{region}.{CLOUD_DASHBOARD_HOST}"
+    return CLOUD_DASHBOARD_URL
+
+
+def _without_api_path(path: str) -> str:
+    for api_path in LANGSMITH_API_PATHS:
+        if path.endswith(api_path):
+            return path[: -len(api_path)]
+    return path
+
+
+def _resources(payload: object) -> list[dict[str, Any]]:
+    if not isinstance(payload, dict):
+        return []
+    resources = payload.get("resources")
+    if not isinstance(resources, list):
+        return []
+    return [item for item in resources if isinstance(item, dict)]
+
 
 class HostBackendError(click.ClickException):
     """Raised when the host backend returns an error response."""
 
-    def __init__(self, message: str, status_code: int | None = None):
+    def __init__(
+        self,
+        message: str,
+        status_code: int | None = None,
+        detail: str | None = None,
+    ):
         super().__init__(message)
         self.status_code = status_code
+        self.detail = detail
+
+
+def _error_detail(response: httpx.Response) -> str | None:
+    try:
+        body = response.json()
+    except ValueError:
+        return None
+    detail = body.get("detail") if isinstance(body, dict) else None
+    return detail if isinstance(detail, str) else None
 
 
 class HostBackendClient:
@@ -24,24 +131,37 @@ class HostBackendClient:
         base_url: str,
         api_key: str,
         tenant_id: str | None = None,
+        *,
+        transport: httpx.BaseTransport | None = None,
     ):
         if not base_url:
             raise click.UsageError("Host backend URL is required")
-        transport = httpx.HTTPTransport(retries=3)
         headers: dict[str, str] = {
             "X-Api-Key": api_key,
             "Accept": "application/json",
         }
         if tenant_id:
             headers["X-Tenant-ID"] = tenant_id
-        self._base_url = base_url.rstrip("/")
+        self._endpoints = ControlPlaneEndpoints.from_control_plane_url(base_url)
+        self._base_url = self._endpoints.control_plane_url
         self._client = httpx.Client(
             base_url=self._base_url,
             headers=headers,
-            transport=transport,
+            transport=transport or httpx.HTTPTransport(retries=3),
             timeout=30,
         )
 
+    @property
+    def base_url(self) -> str:
+        return self._base_url
+
+    @property
+    def endpoints(self) -> ControlPlaneEndpoints:
+        return self._endpoints
+
+    def set_tenant(self, tenant_id: str) -> None:
+        self._client.headers["X-Tenant-ID"] = tenant_id
+
     def _request(
         self,
         method: str,
@@ -53,10 +173,12 @@ class HostBackendClient:
             resp = self._client.request(method, path, json=payload, params=params)
             resp.raise_for_status()
         except httpx.HTTPStatusError as err:
-            detail = err.response.text or str(err.response.status_code)
+            detail = _error_detail(err.response)
+            reason = detail or err.response.text or str(err.response.status_code)
             raise HostBackendError(
-                f"{method} {path} failed with status {err.response.status_code}: {detail}",
+                f"{method} {path} failed with status {err.response.status_code}: {reason}",
                 status_code=err.response.status_code,
+                detail=detail,
             ) from None
         except httpx.TransportError as err:
             raise HostBackendError(str(err)) from None
@@ -72,30 +194,52 @@ class HostBackendClient:
 
     def create_deployment(
         self,
-        name: str,
-        deployment_type: str,
-        source: str,
-        config_path: str | None = None,
+        *,
+        name: str | None,
+        source: SourceName,
+        source_config: dict[str, object],
+        source_revision_config: dict[str, object],
         secrets: list[dict[str, str]] | None = None,
+        agent: dict[str, str] | None = None,
     ) -> dict[str, Any]:
-        """Create a deployment."""
         payload: dict[str, Any] = {
-            "name": name,
             "source": source,
-            "source_config": {"deployment_type": deployment_type},
-            "source_revision_config": {},
+            "source_config": source_config,
+            "source_revision_config": source_revision_config,
         }
-        if source == "internal_source" and config_path:
-            payload["source_revision_config"]["langgraph_config_path"] = config_path
+        if agent is not None:
+            payload["agent"] = agent
+        else:
+            payload["name"] = name
         if secrets is not None:
             payload["secrets"] = secrets
         return self._request("POST", "/v2/deployments", payload)
 
-    def list_deployments(self, name_contains: str = "") -> dict[str, Any]:
-        return self._request(
-            "GET",
-            "/v2/deployments",
-            params={"name_contains": name_contains},
+    def list_deployments(
+        self,
+        *,
+        name: str | None = None,
+        name_contains: str | None = None,
+        limit: int | None = None,
+        agent_id: str | None = None,
+        agent_environment: str | None = None,
+    ) -> list[dict[str, Any]]:
+        given = (
+            ("name", name),
+            ("name_contains", name_contains),
+            ("limit", limit),
+            ("agent_id", agent_id),
+            ("agent_environment", agent_environment),
+        )
+        params = {key: value for key, value in given if value is not None}
+        return _resources(self._request("GET", "/v2/deployments", params=params))
+
+    def get_listener(self, listener_id: str) -> dict[str, Any]:
+        return self._request("GET", f"/v2/listeners/{listener_id}")
+
+    def list_listeners(self) -> list[dict[str, Any]]:
+        return _resources(
+            self._request("GET", "/v2/listeners", params={"limit": MAX_PAGE_SIZE})
         )
 
     def get_deployment(self, deployment_id: str) -> dict[str, Any]:
@@ -105,9 +249,12 @@ class HostBackendClient:
         return self._request("DELETE", f"/v2/deployments/{deployment_id}")
 
     def request_push_token(self, deployment_id: str) -> dict[str, Any]:
+        # Tells the control plane this client logs in with the returned
+        # `username` and pushes to `repository_url`. LangSmith AWS requires it.
         return self._request(
             "POST",
             f"/v2/deployments/{deployment_id}/push-token",
+            {"supports_registry_username": True},
         )
 
     def request_upload_url(self, deployment_id: str) -> dict[str, Any]:
@@ -121,22 +268,21 @@ class HostBackendClient:
         self,
         deployment_id: str,
         image_uri: str,
+        *,
+        revision_source: SourceName | None,
         secrets: list[dict[str, str]] | None = None,
         tracked_packages: list[str] | None = None,
     ) -> dict[str, Any]:
         payload: dict[str, Any] = {
-            "revision_source": "internal_docker",
             "source_revision_config": {"image_uri": image_uri},
         }
+        if revision_source is not None:
+            payload["revision_source"] = revision_source
         if tracked_packages:
             payload["tracked_packages"] = tracked_packages
         if secrets is not None:
             payload["secrets"] = secrets
-        return self._request(
-            "PATCH",
-            f"/v2/deployments/{deployment_id}",
-            payload,
-        )
+        return self._request("PATCH", f"/v2/deployments/{deployment_id}", payload)
 
     def update_deployment_internal_source(
         self,
@@ -171,10 +317,15 @@ class HostBackendClient:
             payload["secrets"] = secrets
         return self._request("PATCH", f"/v2/deployments/{deployment_id}", payload)
 
-    def list_revisions(self, deployment_id: str, limit: int = 1) -> dict[str, Any]:
-        return self._request(
-            "GET",
-            f"/v2/deployments/{deployment_id}/revisions?limit={limit}",
+    def list_revisions(
+        self, deployment_id: str, limit: int = 1
+    ) -> list[dict[str, Any]]:
+        return _resources(
+            self._request(
+                "GET",
+                f"/v2/deployments/{deployment_id}/revisions",
+                params={"limit": limit},
+            )
         )
 
     def get_revision(self, deployment_id: str, revision_id: str) -> dict[str, Any]:

libs/cli/langgraph_cli/image_reference.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+from dataclasses import dataclass, replace
+
+DIGEST_SEPARATOR = "@sha256:"
+DIGEST_MARKER = "@"
+TAG_SEPARATOR = ":"
+PATH_SEPARATOR = "/"
+
+
+@dataclass(frozen=True, slots=True)
+class ImageReference:
+    repository: str
+    tag: str | None = None
+
+    @classmethod
+    def parse(cls, reference: str) -> ImageReference:
+        if DIGEST_MARKER in reference:
+            raise ValueError(f"{reference!r} carries a digest and cannot be tagged")
+        path_start = reference.rfind(PATH_SEPARATOR) + 1
+        name, separator, tag = reference[path_start:].partition(TAG_SEPARATOR)
+        if not separator:
+            return cls(reference)
+        return cls(reference[:path_start] + name, tag)
+
+    def with_tag(self, tag: str) -> ImageReference:
+        return replace(self, tag=tag)
+
+    def matches_digest(self, repo_digest: str) -> bool:
+        return repo_digest.startswith(f"{self.repository}{DIGEST_SEPARATOR}")
+
+    def __str__(self) -> str:
+        if self.tag is None:
+            return self.repository
+        return f"{self.repository}{TAG_SEPARATOR}{self.tag}"

libs/cli/langgraph_cli/schemas.py

@@ -373,6 +373,27 @@ class EncryptionConfig(TypedDict, total=False):
     """
 
 
+class PriorityConfig(TypedDict, total=False):
+    """Configuration for custom run priority logic.
+
+    Allows you to decide each thread's priority settings with a Python function
+    that the server calls at the first run on a thread with no settings, which
+    can come long after the thread was created."""
+
+    path: str
+    """Required. Path to an instance of the Priority() class that registers an assign function.
+
+    Format: "path/to/file.py:my_priority"
+
+    Example:
+        {
+            "priority": {
+                "path": "./priority.py:my_priority"
+            }
+        }
+    """
+
+
 class CorsConfig(TypedDict, total=False):
     """Specifies Cross-Origin Resource Sharing (CORS) rules for your server.
 
@@ -650,7 +671,8 @@ class Config(TypedDict, total=False):
 
     pip_config_file: str | None
     """Optional. Path to a pip config file (e.g., "/etc/pip.conf" or "pip.ini") for controlling
-    package installation (custom indices, credentials, etc.).
+    package installation (custom indices, timeouts, etc.). The file is copied into the
+    generated image, so it must not contain credentials or other secrets.
 
     Only relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.
     """
@@ -689,6 +711,9 @@ class Config(TypedDict, total=False):
       - "." or "./src" if you have a local Python package
       - str (aka "anthropic") for a PyPI package
       - "git+https://github.com/org/repo.git@main" for a Git-based package
+    Git HTTP URLs must not contain userinfo such as a username or token. For private
+    dependencies, provide short-lived credentials through the build environment's
+    secret-backed Git credential helper.
     Defaults to an empty list, meaning no additional packages installed beyond your base environment.
 
     This field is not supported when `source.kind` is `uv`.
@@ -749,6 +774,13 @@ class Config(TypedDict, total=False):
     Allows you to implement custom encryption for sensitive data stored in the database.
     """
 
+    priority: PriorityConfig | None
+    """Optional. Custom run priority config, including the path to your Python priority logic.
+
+    Allows you to decide each thread's priority settings at the first run on a thread with no settings,
+    which can come long after the thread was created.
+    """
+
     http: HttpConfig | None
     """Optional. Configuration for the built-in HTTP server, controlling which custom routes are exposed
     and how cross-origin requests are handled.
@@ -780,6 +812,7 @@ __all__ = [
     "CheckpointerConfig",
     "AuthConfig",
     "EncryptionConfig",
+    "PriorityConfig",
     "HttpConfig",
     "MiddlewareOrders",
     "Distros",

libs/cli/langgraph_cli/uv_lock.py

@@ -880,6 +880,7 @@ def python_config_to_docker_uv_lock(
         _get_node_pm_install_cmd,
         _get_pip_cleanup_lines,
         _image_supports_uv,
+        _validate_git_http_url_userinfo_files,
         docker_tag,
     )
 
@@ -890,16 +891,26 @@ def python_config_to_docker_uv_lock(
         )
 
     config_root = config_path.parent.resolve()
+    source_root = config["source"].get("root", ".")
+    project_root = (config_root / source_root).resolve()
+    _validate_git_http_url_userinfo_files(
+        [project_root / "pyproject.toml", project_root / "uv.lock"]
+    )
+
     install_cmd = "uv pip install --system"
     _, global_reqs_pip_install, pip_config_file_str = _build_python_install_commands(
         config, install_cmd
     )
     plan = _plan_uv_lock_workspace(config_path, config)
+    _validate_git_http_url_userinfo_files(
+        package.pyproject_path for package in plan.install_order
+    )
 
     _update_uv_lock_graph_paths(config_path, config, plan)
     for section, key in [
         ("auth", "path"),
         ("encryption", "path"),
+        ("priority", "path"),
         ("checkpointer", "path"),
         ("http", "app"),
     ]:
@@ -970,6 +981,22 @@ def python_config_to_docker_uv_lock(
             f"{uv_export_project_dir}/uv.lock",
         )
     )
+    for package_root in sorted(
+        plan.all_workspace_roots,
+        key=lambda root: root.as_posix(),
+    ):
+        if package_root == plan.project_root:
+            continue
+        package_relative_path = pathlib.PurePosixPath(
+            package_root.relative_to(plan.project_root).as_posix()
+        )
+        package_pyproject_path = package_relative_path / "pyproject.toml"
+        docker_plan.add_raw(
+            copy_from_project_root(
+                package_pyproject_path,
+                f"{uv_export_project_dir}/{package_pyproject_path.as_posix()}",
+            )
+        )
     docker_plan.add_instruction("WORKDIR", uv_export_project_dir)
     docker_plan.add_instruction(
         "RUN",

libs/cli/schemas/schema.json

@@ -28,7 +28,7 @@
                   "type": "null"
                 }
               ],
-              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, credentials, etc.).\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
+              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, timeouts, etc.). The file is copied into the\ngenerated image, so it must not contain credentials or other secrets.\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
             },
             "_INTERNAL_docker_tag": {
               "anyOf": [
@@ -196,6 +196,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "anyOf": [
                 {
@@ -270,7 +281,7 @@
                   "type": "null"
                 }
               ],
-              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, credentials, etc.).\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
+              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, timeouts, etc.). The file is copied into the\ngenerated image, so it must not contain credentials or other secrets.\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
             },
             "_INTERNAL_docker_tag": {
               "anyOf": [
@@ -438,6 +449,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "$ref": "#/$defs/UvSource"
             },
@@ -666,6 +688,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "anyOf": [
                 {
@@ -1170,6 +1203,18 @@
       },
       "required": []
     },
+    "PriorityConfig": {
+      "title": "PriorityConfig",
+      "description": "Configuration for custom run priority logic.\n\nAllows you to decide each thread's priority settings with a Python function\nthat the server calls at the first run on a thread with no settings, which\ncan come long after the thread was created.",
+      "type": "object",
+      "properties": {
+        "path": {
+          "type": "string",
+          "description": "Required. Path to an instance of the Priority() class that registers an assign function.\n"
+        }
+      },
+      "required": []
+    },
     "UvSource": {
       "title": "UvSource",
       "description": "Deployment source rooted at a uv project or workspace.",

libs/cli/schemas/schema.v0.json

@@ -28,7 +28,7 @@
                   "type": "null"
                 }
               ],
-              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, credentials, etc.).\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
+              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, timeouts, etc.). The file is copied into the\ngenerated image, so it must not contain credentials or other secrets.\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
             },
             "_INTERNAL_docker_tag": {
               "anyOf": [
@@ -196,6 +196,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "anyOf": [
                 {
@@ -270,7 +281,7 @@
                   "type": "null"
                 }
               ],
-              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, credentials, etc.).\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
+              "description": "Optional. Path to a pip config file (e.g., \"/etc/pip.conf\" or \"pip.ini\") for controlling\npackage installation (custom indices, timeouts, etc.). The file is copied into the\ngenerated image, so it must not contain credentials or other secrets.\n\nOnly relevant if Python dependencies are installed via pip. If omitted, default pip settings are used.\n"
             },
             "_INTERNAL_docker_tag": {
               "anyOf": [
@@ -438,6 +449,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "$ref": "#/$defs/UvSource"
             },
@@ -666,6 +688,17 @@
                 }
               ]
             },
+            "priority": {
+              "anyOf": [
+                {
+                  "$ref": "#/$defs/PriorityConfig"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Optional. Custom run priority config, including the path to your Python priority logic.\n\nAllows you to decide each thread's priority settings at the first run on a thread with no settings,\nwhich can come long after the thread was created.\n"
+            },
             "source": {
               "anyOf": [
                 {
@@ -1170,6 +1203,18 @@
       },
       "required": []
     },
+    "PriorityConfig": {
+      "title": "PriorityConfig",
+      "description": "Configuration for custom run priority logic.\n\nAllows you to decide each thread's priority settings with a Python function\nthat the server calls at the first run on a thread with no settings, which\ncan come long after the thread was created.",
+      "type": "object",
+      "properties": {
+        "path": {
+          "type": "string",
+          "description": "Required. Path to an instance of the Priority() class that registers an assign function.\n"
+        }
+      },
+      "required": []
+    },
     "UvSource": {
       "title": "UvSource",
       "description": "Deployment source rooted at a uv project or workspace.",

libs/cli/tests/unit_tests/cli/test_cli.py

@@ -2,10 +2,12 @@ import json
 import pathlib
 import re
 import shutil
+import sys
 import tempfile
 import textwrap
 from contextlib import contextmanager
 from pathlib import Path
+from unittest.mock import MagicMock
 
 import click
 from click.testing import CliRunner
@@ -14,6 +16,7 @@ import langgraph_cli.deploy as deploy_module
 from langgraph_cli.cli import cli, prepare_args_and_stdin
 from langgraph_cli.config import Config, _get_pip_cleanup_lines, validate_config
 from langgraph_cli.docker import DEFAULT_POSTGRES_URI, DockerCapabilities, Version
+from langgraph_cli.host_backend import HostBackendError
 from langgraph_cli.util import clean_empty_lines
 
 FORMATTED_CLEANUP_LINES = _get_pip_cleanup_lines(
@@ -320,6 +323,31 @@ def test_top_level_help_truncates_command_descriptions_to_single_line() -> None:
     assert "[Beta] List LangSmith Deployments." in deploy_list_line
 
 
+def test_deploy_missing_config_shows_actionable_error(tmp_path, monkeypatch) -> None:
+    runner = CliRunner()
+    monkeypatch.chdir(tmp_path)
+
+    result = runner.invoke(cli, ["deploy"])
+
+    assert result.exit_code == 1
+    assert "We couldn't find a langgraph.json file." in result.output
+    assert "Run `langgraph deploy` from the root" in result.output
+    assert "https://docs.langchain.com/langsmith/deployment-quickstart" in result.output
+    assert "Traceback" not in result.output
+
+
+def test_deploy_missing_config_emits_json_error(tmp_path, monkeypatch) -> None:
+    runner = CliRunner()
+    monkeypatch.chdir(tmp_path)
+
+    result = runner.invoke(cli, ["deploy", "--json"])
+
+    assert result.exit_code == 1
+    events = [json.loads(line) for line in result.output.splitlines()]
+    assert events[-1]["event"] == "error"
+    assert "We couldn't find a langgraph.json file." in events[-1]["message"]
+
+
 def test_dev_command_requires_ssl_certfile_and_keyfile_together(tmp_path) -> None:
     config_path = tmp_path / "langgraph.json"
     config_path.write_text(
@@ -345,6 +373,32 @@ def test_dev_command_requires_ssl_certfile_and_keyfile_together(tmp_path) -> Non
     assert "Both --ssl-certfile and --ssl-keyfile must be provided" in result.output
 
 
+def test_dev_command_passes_priority_to_the_server(tmp_path, monkeypatch) -> None:
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text(
+        json.dumps(
+            {
+                "dependencies": ["."],
+                "graphs": {"agent": "./agent.py:graph"},
+                "priority": {"path": "./priority.py:priority"},
+            }
+        ),
+        encoding="utf-8",
+    )
+    # The test environment doesn't install langgraph-api, so stand in for its server.
+    server = MagicMock()
+    monkeypatch.setitem(sys.modules, "langgraph_api.cli", server)
+    # dev appends the working directory and its dependencies to sys.path.
+    monkeypatch.setattr(sys, "path", list(sys.path))
+
+    result = CliRunner().invoke(cli, ["dev", "--config", str(config_path)])
+
+    assert result.exit_code == 0, result.output
+    assert server.run_server.call_args.kwargs["priority"] == {
+        "path": "./priority.py:priority"
+    }
+
+
 def test_deploy_list_command(monkeypatch) -> None:
     runner = CliRunner()
     captured: dict[str, str] = {}
@@ -357,20 +411,18 @@ def test_deploy_list_command(monkeypatch) -> None:
 
         def list_deployments(self, name_contains: str = ""):
             captured["name_contains"] = name_contains
-            return {
-                "resources": [
-                    {
-                        "id": "dep-123",
-                        "name": "alpha",
-                        "source_config": {"custom_url": "https://alpha.example.com"},
-                    },
-                    {
-                        "id": "dep-456",
-                        "name": "beta",
-                        "source_config": {"custom_url": "https://beta.example.com"},
-                    },
-                ]
-            }
+            return [
+                {
+                    "id": "dep-123",
+                    "name": "alpha",
+                    "source_config": {"custom_url": "https://alpha.example.com"},
+                },
+                {
+                    "id": "dep-456",
+                    "name": "beta",
+                    "source_config": {"custom_url": "https://beta.example.com"},
+                },
+            ]
 
     monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
 
@@ -410,7 +462,7 @@ def test_deploy_list_command_no_results(monkeypatch) -> None:
             pass
 
         def list_deployments(self, name_contains: str = ""):
-            return {"resources": []}
+            return []
 
     monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
 
@@ -430,6 +482,203 @@ def test_deploy_list_command_no_results(monkeypatch) -> None:
     assert result.output.strip() == "No deployments found."
 
 
+def test_deploy_listeners_list_command(monkeypatch) -> None:
+    runner = CliRunner()
+    captured: dict[str, str] = {}
+
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            captured["host_url"] = host_url
+            captured["api_key"] = api_key
+            captured["tenant_id"] = tenant_id or ""
+
+        def list_listeners(self):
+            return [
+                {
+                    "id": "listener-1",
+                    "compute_id": "prod-cluster",
+                    "compute_config": {"k8s_namespaces": ["agents"]},
+                },
+                {
+                    "id": "listener-2",
+                    "compute_id": "multi-cluster",
+                    "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
+                },
+            ]
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = runner.invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert captured == {
+        "host_url": "https://api.example.com",
+        "api_key": "test-key",
+        "tenant_id": "",
+    }
+    assert "Listener ID" in result.output
+    assert "Compute ID" in result.output
+    assert "Namespaces" in result.output
+    assert "listener-1" in result.output
+    assert "prod-cluster" in result.output
+    assert "agents, agents-staging" in result.output
+
+
+def test_deploy_listeners_list_command_no_results(monkeypatch) -> None:
+    runner = CliRunner()
+
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            return []
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = runner.invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert result.output.strip() == "No listeners found for this workspace."
+
+
+def test_deploy_listeners_list_command_json(monkeypatch) -> None:
+    runner = CliRunner()
+
+    listeners = [
+        {
+            "id": "listener-1",
+            "compute_id": "prod-cluster",
+            "compute_config": {"k8s_namespaces": ["agents"]},
+        },
+        {
+            "id": "listener-2",
+            "compute_id": "multi-cluster",
+            "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
+        },
+    ]
+
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            return listeners
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = runner.invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--json",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert json.loads(result.output) == listeners
+
+
+def test_deploy_listeners_list_command_json_no_results(monkeypatch) -> None:
+    runner = CliRunner()
+
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            return []
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = runner.invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--json",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert json.loads(result.output) == []
+
+
+def test_deploy_listeners_list_command_json_org_scoped_403(monkeypatch) -> None:
+    """With --json, an org-scoped 403 must raise cleanly instead of
+    prompting for a workspace ID, which would write to stdout and hang
+    waiting for input that a scripted invocation never provides."""
+    runner = CliRunner()
+
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            raise HostBackendError("requires workspace specification", status_code=403)
+
+        def set_tenant(self, tenant_id: str) -> None:
+            raise AssertionError("must not retry with a prompted tenant with --json")
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    prompt_calls = []
+    monkeypatch.setattr(
+        click, "prompt", lambda *a, **k: prompt_calls.append((a, k)) or "unreachable"
+    )
+
+    result = runner.invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--json",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert prompt_calls == [], "must not prompt interactively with --json"
+    assert result.exit_code != 0
+    assert "LANGSMITH_TENANT_ID" in result.output
+
+
 def test_deploy_revisions_list_command(monkeypatch) -> None:
     runner = CliRunner()
     captured: dict[str, str] = {}
@@ -443,20 +692,18 @@ def test_deploy_revisions_list_command(monkeypatch) -> None:
         def list_revisions(self, deployment_id: str, limit: int = 1):
             captured["deployment_id"] = deployment_id
             captured["limit"] = str(limit)
-            return {
-                "resources": [
-                    {
-                        "id": "rev-123",
-                        "status": "CREATING",
-                        "created_at": "2023-11-07T05:31:56Z",
-                    },
-                    {
-                        "id": "rev-456",
-                        "status": "DEPLOYED",
-                        "created_at": "2023-11-08T10:00:00Z",
-                    },
-                ]
-            }
+            return [
+                {
+                    "id": "rev-123",
+                    "status": "CREATING",
+                    "created_at": "2023-11-07T05:31:56Z",
+                },
+                {
+                    "id": "rev-456",
+                    "status": "DEPLOYED",
+                    "created_at": "2023-11-08T10:00:00Z",
+                },
+            ]
 
     monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
 
@@ -497,7 +744,7 @@ def test_deploy_revisions_list_command_no_results(monkeypatch) -> None:
             pass
 
         def list_revisions(self, deployment_id: str, limit: int = 1):
-            return {"resources": []}
+            return []
 
     monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
 
@@ -530,7 +777,7 @@ def test_deploy_revisions_list_command_with_explicit_limit(monkeypatch) -> None:
         def list_revisions(self, deployment_id: str, limit: int = 1):
             captured["deployment_id"] = deployment_id
             captured["limit"] = str(limit)
-            return {"resources": []}
+            return []
 
     monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
 

libs/cli/tests/unit_tests/conftest.py

@@ -12,5 +12,5 @@ def disable_analytics_env() -> None:
     if "LANGGRAPH_CLI_NO_ANALYTICS" in os.environ:
         print("⚠️ LANGGRAPH_CLI_NO_ANALYTICS is set. Overriding it for the test.")
 
-    with patch.dict(os.environ, {"LANGGRAPH_CLI_NO_ANALYTICS": "0"}):
+    with patch.dict(os.environ, {"LANGGRAPH_CLI_NO_ANALYTICS": "1"}):
         yield

libs/cli/tests/unit_tests/test_config.py

@@ -16,6 +16,7 @@ from langgraph_cli.config import (
     config_to_docker,
     default_base_image,
     docker_tag,
+    get_unknown_keys,
     has_disallowed_build_command_content,
     validate_config,
     validate_config_file,
@@ -155,6 +156,7 @@ def test_validate_config():
         "store": None,
         "auth": None,
         "encryption": None,
+        "priority": None,
         "webhooks": None,
         "checkpointer": None,
         "http": None,
@@ -184,6 +186,7 @@ def test_validate_config():
         "store": None,
         "auth": None,
         "encryption": None,
+        "priority": None,
         "webhooks": None,
         "checkpointer": None,
         "http": None,
@@ -255,6 +258,243 @@ def test_validate_config():
         )
 
 
+@pytest.mark.parametrize(
+    "dependency",
+    [
+        "git+https://user:secret-token@github.com/org/private.git@main",
+        "private-package @ git+http://token@github.com/org/private.git",
+        "git+HTTPS://user%40example.com:secret%2Ftoken@github.com/org/private.git",
+        "git+https://${GIT_TOKEN}@github.com/org/private.git",
+    ],
+)
+def test_validate_config_rejects_git_http_url_userinfo(dependency: str):
+    with pytest.raises(click.UsageError) as exc_info:
+        validate_config(
+            {
+                "python_version": "3.11",
+                "dependencies": [dependency],
+                "graphs": {"agent": "./agent.py:graph"},
+            }
+        )
+
+    message = str(exc_info.value)
+    assert "must not contain credentials or other URL userinfo" in message
+    assert "secret-token" not in message
+    assert "secret%2Ftoken" not in message
+
+
+def test_validate_config_file_reports_source_for_git_http_url_userinfo(
+    tmp_path: pathlib.Path,
+):
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text(
+        json.dumps(
+            {
+                "python_version": "3.11",
+                "dependencies": ["git+https://secret-token@github.com/org/private.git"],
+                "graphs": {"agent": "./agent.py:graph"},
+            }
+        )
+    )
+
+    with pytest.raises(click.UsageError) as exc_info:
+        validate_config_file(config_path)
+
+    message = str(exc_info.value)
+    assert "secret-token" not in message
+    assert f"Found in: {config_path.resolve()}" in message
+
+
+@pytest.mark.parametrize(
+    "manifest", ["package.json", "package-lock.json", "yarn.lock", "pnpm-lock.yaml"]
+)
+def test_config_to_docker_rejects_git_http_url_userinfo_in_node_files(
+    tmp_path: pathlib.Path, manifest: str
+):
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text("{}\n")
+    (tmp_path / "agent.js").write_text("export const graph = {};\n")
+    (tmp_path / "package.json").write_text('{"name":"agent"}\n')
+    (tmp_path / manifest).write_text(
+        '"priv": "git+https://user:secret-token@github.com/org/private.git"\n'
+    )
+    config = validate_config(
+        {
+            "node_version": "20",
+            "graphs": {"agent": "./agent.js:graph"},
+        }
+    )
+
+    with pytest.raises(click.UsageError) as exc_info:
+        config_to_docker(
+            config_path,
+            config,
+            base_image="langchain/langgraphjs-api",
+        )
+
+    message = str(exc_info.value)
+    assert "must not contain credentials or other URL userinfo" in message
+    assert "secret-token" not in message
+    assert f"Found in: {(tmp_path / manifest).resolve()}" in message
+
+
+def test_config_to_docker_allows_node_git_urls_without_http_userinfo(
+    tmp_path: pathlib.Path,
+):
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text("{}\n")
+    (tmp_path / "agent.js").write_text("export const graph = {};\n")
+    (tmp_path / "package.json").write_text(
+        '{"dependencies":{"public":"git+https://github.com/org/public.git"}}\n'
+    )
+    config = validate_config(
+        {
+            "node_version": "20",
+            "graphs": {"agent": "./agent.js:graph"},
+        }
+    )
+
+    docker, _ = config_to_docker(
+        config_path,
+        config,
+        base_image="langchain/langgraphjs-api",
+    )
+
+    assert f"ADD . /deps/{tmp_path.name}" in docker
+
+
+def test_config_to_docker_rejects_git_http_url_userinfo_in_node_workspace(
+    tmp_path: pathlib.Path,
+):
+    config_root = tmp_path / "apps" / "agent"
+    config_root.mkdir(parents=True)
+    config_path = config_root / "langgraph.json"
+    config_path.write_text("{}\n")
+    (config_root / "agent.js").write_text("export const graph = {};\n")
+    (config_root / "package.json").write_text(
+        '{"dependencies":{"priv":"git+https://secret-token@github.com/org/private.git"}}\n'
+    )
+    (tmp_path / "package.json").write_text('{"name":"workspace"}\n')
+    config = validate_config(
+        {
+            "node_version": "20",
+            "graphs": {"agent": "./agent.js:graph"},
+        }
+    )
+
+    with pytest.raises(click.UsageError) as exc_info:
+        config_to_docker(
+            config_path,
+            config,
+            base_image="langchain/langgraphjs-api",
+            build_context=str(tmp_path),
+        )
+
+    message = str(exc_info.value)
+    assert "secret-token" not in message
+    assert f"Found in: {(config_root / 'package.json').resolve()}" in message
+
+
+@pytest.mark.parametrize(
+    "dependency",
+    [
+        "git+https://github.com/org/public.git@main",
+        "private-package @ git+https://github.com/org/private.git@main",
+        "git+ssh://git@github.com/org/private.git@main",
+    ],
+)
+def test_validate_config_allows_git_urls_without_http_userinfo(dependency: str):
+    config = validate_config(
+        {
+            "python_version": "3.11",
+            "dependencies": [dependency],
+            "graphs": {"agent": "./agent.py:graph"},
+        }
+    )
+
+    assert config["dependencies"] == [dependency]
+
+
+def test_config_to_docker_rejects_git_http_url_userinfo_in_requirements(
+    tmp_path: pathlib.Path,
+):
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text("{}\n")
+    (tmp_path / "agent.py").write_text("graph = object()\n")
+    (tmp_path / "requirements.txt").write_text(
+        "private @ git+https://secret-token@github.com/org/private.git\n"
+    )
+    config = validate_config(
+        {
+            "python_version": "3.11",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+        }
+    )
+
+    with pytest.raises(click.UsageError) as exc_info:
+        config_to_docker(
+            config_path,
+            config,
+            base_image="langchain/langgraph-api:0.2.47",
+        )
+
+    message = str(exc_info.value)
+    assert "must not contain credentials or other URL userinfo" in message
+    assert "secret-token" not in message
+    assert f"Found in: {(tmp_path / 'requirements.txt').resolve()}" in message
+
+
+@pytest.mark.parametrize("manifest", ["pyproject.toml", "uv.lock"])
+def test_config_to_docker_rejects_git_http_url_userinfo_in_uv_files(
+    tmp_path: pathlib.Path, manifest: str
+):
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text("{}\n")
+    (tmp_path / "src").mkdir()
+    (tmp_path / "src" / "agent.py").write_text("graph = object()\n")
+    pyproject = textwrap.dedent(
+        """
+        [project]
+        name = "agent"
+        version = "0.1.0"
+        dependencies = ["private"]
+
+        [tool.uv.sources]
+        private = { git = "https://github.com/org/private.git" }
+        """
+    ).strip()
+    uv_lock = "# uv lock file\n"
+    if manifest == "pyproject.toml":
+        pyproject = pyproject.replace(
+            "https://github.com", "https://secret-token@github.com"
+        )
+    else:
+        uv_lock += (
+            'source = { git = "https://secret-token@github.com/org/private.git" }\n'
+        )
+    (tmp_path / "pyproject.toml").write_text(pyproject + "\n")
+    (tmp_path / "uv.lock").write_text(uv_lock)
+    config = validate_config(
+        {
+            "python_version": "3.11",
+            "graphs": {"agent": "./src/agent.py:graph"},
+            "source": {"kind": "uv"},
+        }
+    )
+
+    with pytest.raises(click.UsageError) as exc_info:
+        config_to_docker(
+            config_path,
+            config,
+            base_image="langchain/langgraph-api:0.2.47",
+        )
+
+    message = str(exc_info.value)
+    assert "must not contain credentials or other URL userinfo" in message
+    assert "secret-token" not in message
+
+
 def test_validate_config_image_distro():
     """Test validation of image_distro field."""
     # Valid image_distro values should work
@@ -1052,6 +1292,109 @@ def test_config_to_docker_python_encryption_formatted():
     )
 
 
+@pytest.mark.parametrize(
+    "path", ["./priority.py:priority", "my_package.priority:priority"]
+)
+def test_config_to_docker_python_priority(path: str):
+    # Test that priority config is kept by validation and isn't an unknown key
+    raw_config = {
+        "python_version": "3.11",
+        "graphs": {"agent": "./agent.py:graph"},
+        "dependencies": ["."],
+        "priority": {"path": path},
+    }
+    validated = validate_config(raw_config)
+
+    assert validated["priority"] == {"path": path}
+    assert get_unknown_keys(raw_config) == []
+
+
+def test_config_to_docker_python_priority_bad_path():
+    # Test that invalid priority path format raises ValueError
+    with pytest.raises(ValueError, match="Invalid priority.path format"):
+        validate_config(
+            {
+                "python_version": "3.11",
+                "graphs": {"agent": "./agent.py:graph"},
+                "dependencies": ["."],
+                "priority": {"path": "./priority.py"},  # Missing :attribute
+            }
+        )
+
+
+@pytest.mark.parametrize("ext", [".ts", ".mts", ".cts", ".js", ".mjs", ".cjs"])
+def test_config_to_docker_python_priority_js_path(ext: str):
+    # Test that a JavaScript priority path is rejected
+    with pytest.raises(ValueError, match="JavaScript priority callbacks"):
+        validate_config(
+            {
+                "python_version": "3.11",
+                "graphs": {"agent": "./agent.py:graph"},
+                "dependencies": ["."],
+                "priority": {"path": f"./priority{ext}:priority"},
+            }
+        )
+
+
+def test_config_to_docker_nodejs_priority():
+    # Test that a Node.js-only project can name a Python priority file
+    actual_docker_stdin, _ = config_to_docker(
+        PATH_TO_CONFIG,
+        validate_config(
+            {
+                "node_version": "20",
+                "graphs": {"agent": "./graphs/agent.js:graph"},
+                "priority": {"path": "./priority.py:priority"},
+            }
+        ),
+        base_image="langchain/langgraphjs-api",
+    )
+    assert (
+        """ENV LANGGRAPH_PRIORITY='{"path": "./priority.py:priority"}'"""
+        in actual_docker_stdin
+    )
+
+
+def test_config_to_docker_python_priority_formatted():
+    # Test that priority config is written to the Docker output with its container path
+    actual_docker_stdin, _ = config_to_docker(
+        PATH_TO_CONFIG,
+        validate_config(
+            {
+                "python_version": "3.11",
+                "dependencies": ["."],
+                "graphs": {"agent": "./graphs/agent.py:graph"},
+                "priority": {"path": "./agent.py:my_priority"},
+            }
+        ),
+        base_image="langchain/langgraph-api",
+    )
+    assert (
+        "ENV LANGGRAPH_PRIORITY="
+        """'{"path": "/deps/outer-unit_tests/unit_tests/agent.py:my_priority"}'"""
+        in actual_docker_stdin
+    )
+
+
+def test_config_to_docker_python_priority_not_in_dependencies():
+    # Test that a priority file outside the dependencies raises ValueError
+    with pytest.raises(
+        ValueError, match="Priority file .* not covered by dependencies"
+    ):
+        config_to_docker(
+            PATH_TO_CONFIG,
+            validate_config(
+                {
+                    "python_version": "3.11",
+                    "dependencies": ["./graphs"],
+                    "graphs": {"agent": "./graphs/agent.py:graph"},
+                    "priority": {"path": "./agent.py:my_priority"},
+                }
+            ),
+            base_image="langchain/langgraph-api",
+        )
+
+
 def test_config_to_docker_nodejs_internal_docker_tag():
     graphs = {"agent": "./graphs/agent.js:graph"}
     actual_docker_stdin, additional_contexts = config_to_docker(
@@ -1403,6 +1746,19 @@ def test_config_to_docker_uv_lock():
             "COPY --from=uv-workspace-root uv.lock /tmp/uv_export/project/uv.lock"
             in docker
         )
+        workspace_pyprojects = [
+            "apps/agent/pyproject.toml",
+            "libs/extra/pyproject.toml",
+            "libs/shared/pyproject.toml",
+        ]
+        export_instruction = "RUN uv export --package agent"
+        for pyproject_path in workspace_pyprojects:
+            copy_instruction = (
+                "COPY --from=uv-workspace-root "
+                f"{pyproject_path} /tmp/uv_export/project/{pyproject_path}"
+            )
+            assert copy_instruction in docker
+            assert docker.index(copy_instruction) < docker.index(export_instruction)
         assert additional_contexts == {"uv-workspace-root": str(project_root.resolve())}
 
         assert (
@@ -1481,6 +1837,38 @@ def test_config_to_docker_uv_lock_honors_root_workspace_sources():
         )
 
 
+def test_config_to_docker_uv_lock_rewrites_priority_path():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        tmpdir_path = pathlib.Path(tmpdir)
+        project_root, config_path = _write_uv_lock_workspace(
+            tmpdir_path,
+            agent_sources="[tool.uv.sources]\nshared = { workspace = true }",
+        )
+        (project_root / "libs" / "shared" / "src" / "shared" / "priority.py").touch()
+
+        config = validate_config(
+            {
+                "python_version": "3.11",
+                "graphs": {
+                    "agent": "../../apps/agent/src/agent/graph.py:graph",
+                },
+                "source": {"kind": "uv", "root": "../..", "package": "agent"},
+                "priority": {
+                    "path": "../../libs/shared/src/shared/priority.py:priority"
+                },
+            }
+        )
+        docker, _ = config_to_docker(
+            config_path, config, base_image="langchain/langgraph-api:0.2.47"
+        )
+
+        assert (
+            "ENV LANGGRAPH_PRIORITY="
+            """'{"path": "/deps/workspace/libs/shared/src/shared/priority.py:priority"}'"""
+            in docker
+        )
+
+
 def test_config_to_docker_uv_lock_ignores_unrelated_workspace_package_sources():
     with tempfile.TemporaryDirectory() as tmpdir:
         tmpdir_path = pathlib.Path(tmpdir)

libs/cli/tests/unit_tests/test_deploy_agents.py

@@ -0,0 +1,119 @@
+import json
+from unittest.mock import Mock
+
+import httpx
+import pytest
+from click.testing import CliRunner
+
+import langgraph_cli.deploy as deploy
+from langgraph_cli.cli import cli
+from langgraph_cli.host_backend import HostBackendClient
+
+
+@pytest.fixture
+def deployment_api(monkeypatch, tmp_path):
+    monkeypatch.chdir(tmp_path)
+    monkeypatch.delenv("LANGSMITH_DEPLOYMENT_NAME", raising=False)
+    monkeypatch.setattr(deploy, "_emitter", None)
+    monkeypatch.setattr(deploy, "_no_input", False)
+    (tmp_path / "langgraph.json").write_text(
+        json.dumps({"dependencies": ["."], "graphs": {"agent": "./agent.py:graph"}})
+    )
+    (tmp_path / ".env").write_text("LANGSMITH_DEPLOYMENT_NAME=legacy\n")
+    requests = []
+    state = {"enabled": True, "resources": []}
+
+    def handler(request):
+        requests.append(request)
+        assert request.url.path == "/v2/deployments"
+        if request.method == "GET":
+            if not state["enabled"] and (
+                "agent_id" in request.url.params
+                or "agent_environment" in request.url.params
+            ):
+                return httpx.Response(
+                    400, text="Agent filters are not available for this tenant."
+                )
+            return httpx.Response(200, json={"resources": state["resources"]})
+        assert request.method == "POST"
+        return httpx.Response(200, json={"id": "runtime-id", "name": "server-name"})
+
+    client = HostBackendClient("https://api.example.com", "test-key")
+    client._client.close()
+    client._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=httpx.MockTransport(handler),
+        headers={"X-Api-Key": "test-key"},
+    )
+    monkeypatch.setattr(deploy, "_create_host_backend_client", lambda *a, **kw: client)
+    monkeypatch.setattr(deploy, "find_tracked_packages", lambda *a: [])
+    remote_build = Mock(return_value=deploy.BuildResult())
+    monkeypatch.setattr(deploy, "_run_remote_build", remote_build)
+    monkeypatch.setattr(deploy, "_resolve_build_mode", lambda flag, **kw: (flag, None))
+    yield state, requests, remote_build
+    client._client.close()
+
+
+AGENT_ARGS = [
+    "deploy",
+    "--agent-id",
+    "customer-support",
+    "--agent-environment",
+    "staging",
+    "--remote",
+    "--no-wait",
+    "--no-input",
+]
+
+
+def test_agent_create(deployment_api, tmp_path, monkeypatch):
+    monkeypatch.setenv("LANGSMITH_DEPLOYMENT_NAME", "legacy")
+    _, requests, build = deployment_api
+    result = CliRunner().invoke(cli, AGENT_ARGS)
+    assert result.exit_code == 0, result.output
+    assert dict(requests[0].url.params) == {
+        "agent_id": "customer-support",
+        "agent_environment": "staging",
+        "limit": "100",
+    }
+    payload = json.loads(requests[1].content)
+    assert payload["agent"] == {
+        "agent_id": "customer-support",
+        "environment": "staging",
+    }
+    assert "name" not in payload
+    assert build.call_args.kwargs["deployment_id"] == "runtime-id"
+    assert "server-name" in result.output
+    assert (tmp_path / ".env").read_text() == "LANGSMITH_DEPLOYMENT_NAME=legacy\n"
+
+
+def test_agent_update(deployment_api):
+    state, requests, build = deployment_api
+    state["resources"] = [{"id": "existing-id", "is_preview": False}]
+    result = CliRunner().invoke(cli, AGENT_ARGS)
+    assert result.exit_code == 0, result.output
+    assert len(requests) == 1
+    assert build.call_args.kwargs["deployment_id"] == "existing-id"
+
+
+def test_agent_rejects_explicit_name(deployment_api, monkeypatch):
+    monkeypatch.setenv("LANGSMITH_DEPLOYMENT_NAME", "legacy")
+    _, requests, _ = deployment_api
+    result = CliRunner().invoke(cli, [*AGENT_ARGS, "--name", "legacy"])
+    assert result.exit_code == 2
+    assert "cannot be combined" in result.output
+    assert not requests
+
+
+def test_agent_lookup_refuses_a_control_plane_that_ignores_the_filter(deployment_api):
+    state, requests, _ = deployment_api
+    state["resources"] = [
+        {"id": "someone-elses", "is_preview": False},
+        {"id": "another", "is_preview": False},
+    ]
+
+    result = CliRunner().invoke(cli, AGENT_ARGS)
+
+    assert result.exit_code != 0
+    assert "does not filter deployments by agent" in result.output
+    assert len(requests) == 1

libs/cli/tests/unit_tests/test_deploy_helpers.py

@@ -13,6 +13,20 @@ import pytest
 
 import langgraph_cli.deploy as deploy_mod
 from langgraph_cli.deploy import (
+    BuildAndPush,
+    ById,
+    ByName,
+    CreateOnlySettings,
+    CustomerRegistrySource,
+    DockerBuildCommand,
+    ExistingDeployment,
+    Listener,
+    ManagedRegistrySource,
+    OnListener,
+    PublishedImage,
+    RemoteBuildSource,
+    RequestedPlacement,
+    Unplaced,
     _call_host_backend_with_optional_tenant,
     _create_host_backend_client,
     _docker_config_for_token,
@@ -21,17 +35,22 @@ from langgraph_cli.deploy import (
     _parse_env_from_config,
     _resolve_env_path,
     _resolve_pushed_image_digest,
-    _smith_dashboard_base_url,
+    _resource_spec,
+    _select_source,
     _validate_prebuilt_image,
+    find_deployment_by_name,
     normalize_image_tag,
     normalize_name,
 )
 from langgraph_cli.host_backend import HostBackendClient, HostBackendError
+from langgraph_cli.image_reference import ImageReference
 
 
 class TestDockerConfigForToken:
     def test_creates_config_json(self):
-        with _docker_config_for_token("us-docker.pkg.dev", "my-token") as cfg:
+        with _docker_config_for_token(
+            "us-docker.pkg.dev", "my-token", "oauth2accesstoken"
+        ) as cfg:
             config_path = os.path.join(cfg, "config.json")
             assert os.path.isfile(config_path)
             with open(config_path) as f:
@@ -39,13 +58,26 @@ class TestDockerConfigForToken:
             expected_auth = base64.b64encode(b"oauth2accesstoken:my-token").decode()
             assert data == {"auths": {"us-docker.pkg.dev": {"auth": expected_auth}}}
 
+    def test_uses_the_given_username(self):
+        with _docker_config_for_token(
+            "123456789012.dkr.ecr.us-east-2.amazonaws.com", "ecr-password", "AWS"
+        ) as cfg:
+            with open(os.path.join(cfg, "config.json")) as f:
+                data = json.load(f)
+        expected_auth = base64.b64encode(b"AWS:ecr-password").decode()
+        assert data["auths"]["123456789012.dkr.ecr.us-east-2.amazonaws.com"] == {
+            "auth": expected_auth
+        }
+
     def test_tempdir_cleaned_up(self):
-        with _docker_config_for_token("registry.example.com", "tok") as cfg:
+        with _docker_config_for_token(
+            "registry.example.com", "tok", "oauth2accesstoken"
+        ) as cfg:
             assert os.path.isdir(cfg)
         assert not os.path.exists(cfg)
 
     def test_different_registries(self):
-        with _docker_config_for_token("gcr.io", "token123") as cfg:
+        with _docker_config_for_token("gcr.io", "token123", "oauth2accesstoken") as cfg:
             with open(os.path.join(cfg, "config.json")) as f:
                 data = json.load(f)
             assert "gcr.io" in data["auths"]
@@ -259,31 +291,29 @@ class TestEnvWithoutDeploymentName:
 
 class TestCallHostBackendWithOptionalTenant:
     def _make_client(self, handler):
-        c = HostBackendClient("https://api.example.com", "test-key")
-        c._client = httpx.Client(
-            base_url="https://api.example.com",
+        c = HostBackendClient(
+            "https://api.example.com",
+            "test-key",
             transport=httpx.MockTransport(handler),
-            headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-            timeout=30,
         )
         return c
 
     def _make_eu_client(self, handler):
-        c = HostBackendClient("https://eu.api.host.langchain.com", "test-key")
-        c._client = httpx.Client(
-            base_url="https://eu.api.host.langchain.com",
+        c = HostBackendClient(
+            "https://eu.api.host.langchain.com",
+            "test-key",
             transport=httpx.MockTransport(handler),
-            headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-            timeout=30,
         )
         return c
 
     def test_success_passes_through(self):
-        client = self._make_client(lambda req: httpx.Response(200, json={"ok": True}))
+        client = self._make_client(
+            lambda req: httpx.Response(200, json={"resources": [{"id": "dep-1"}]})
+        )
         result = _call_host_backend_with_optional_tenant(
             client, lambda c: c.list_deployments()
         )
-        assert result == {"ok": True}
+        assert result == [{"id": "dep-1"}]
 
     def test_403_not_enabled_gives_actionable_error(self):
         detail = (
@@ -334,7 +364,6 @@ class TestCallHostBackendWithOptionalTenant:
         assert exc_info.value.status_code == 403
         assert "smith.langchain.com" in exc_info.value.message
         assert seen_tenant_ids == [None, "workspace-123"]
-        assert client._client.headers["X-Tenant-ID"] == "workspace-123"
 
     def test_other_403_re_raises_original(self):
         client = self._make_client(
@@ -540,60 +569,334 @@ class TestCreateHostBackendClientNoInput:
         assert client is not None
 
 
-class TestSmithDashboardBaseUrl:
-    def test_none_returns_default(self):
-        assert _smith_dashboard_base_url(None) == "https://smith.langchain.com"
+class TestCreateHostBackendClientEndpoint:
+    def test_langsmith_endpoint_from_project_env_selects_self_hosted_control_plane(
+        self, monkeypatch
+    ):
+        monkeypatch.setenv("LANGSMITH_API_KEY", "lsv2_test")
+        monkeypatch.delenv("LANGSMITH_ENDPOINT", raising=False)
 
-    def test_empty_returns_default(self):
-        assert _smith_dashboard_base_url("") == "https://smith.langchain.com"
-
-    def test_prod_host_url(self):
-        assert (
-            _smith_dashboard_base_url("https://api.host.langchain.com")
-            == "https://smith.langchain.com"
+        client = _create_host_backend_client(
+            host_url=None,
+            api_key=None,
+            env_vars={"LANGSMITH_ENDPOINT": "https://smith.example.com/api/v1"},
         )
 
-    def test_dev_host_url(self):
-        assert (
-            _smith_dashboard_base_url("https://dev.api.host.langchain.com")
-            == "https://dev.smith.langchain.com"
+        assert client.base_url == "https://smith.example.com/api-host"
+
+    def test_explicit_host_url_wins_over_langsmith_endpoint(self, monkeypatch):
+        monkeypatch.setenv("LANGSMITH_API_KEY", "lsv2_test")
+        monkeypatch.setenv("LANGSMITH_ENDPOINT", "https://smith.example.com/api/v1")
+
+        client = _create_host_backend_client(
+            host_url="https://custom.host.com", api_key=None, env_vars={}
         )
 
-    def test_eu_host_url(self):
-        assert (
-            _smith_dashboard_base_url("https://eu.api.host.langchain.com")
-            == "https://eu.smith.langchain.com"
+        assert client.base_url == "https://custom.host.com"
+
+
+class TestDockerBuildCommand:
+    @pytest.mark.parametrize(
+        ("machine", "verbose", "expected"),
+        [
+            pytest.param(
+                "x86_64",
+                False,
+                DockerBuildCommand(("docker", "build"), ()),
+                id="amd64_host_builds_natively",
+            ),
+            pytest.param(
+                "arm64",
+                False,
+                DockerBuildCommand(
+                    ("docker", "buildx", "build"),
+                    ("--platform", "linux/amd64", "--load", "--progress=plain"),
+                ),
+                id="other_hosts_capture_plain_build_logs",
+            ),
+            pytest.param(
+                "arm64",
+                True,
+                DockerBuildCommand(
+                    ("docker", "buildx", "build"),
+                    ("--platform", "linux/amd64", "--load"),
+                ),
+                id="verbose_cross_build_keeps_progress_output",
+            ),
+        ],
+    )
+    def test_for_host_targets_the_deployment_platform(self, machine, verbose, expected):
+        assert DockerBuildCommand.for_host(machine, verbose=verbose) == expected
+
+
+class TestSelectSource:
+    OPTIONS = {
+        "push_to": None,
+        "image": None,
+        "image_uri": None,
+        "image_name": None,
+        "tag": None,
+        "remote_build_flag": None,
+        "placement": RequestedPlacement(),
+        "image_pull_secrets": (),
+        "selector": ByName("my-app"),
+    }
+    REPOSITORY = "registry.example.com/app"
+
+    @pytest.mark.parametrize(
+        ("flags", "docker_available", "expected"),
+        [
+            pytest.param(
+                {"push_to": REPOSITORY},
+                True,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "latest"),
+                        prebuilt_image=None,
+                    ),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="push_to_selects_the_external_source_with_the_default_tag",
+            ),
+            pytest.param(
+                {"push_to": f"{REPOSITORY}:v2"},
+                True,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "v2"),
+                        prebuilt_image=None,
+                    ),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="push_to_keeps_a_tag_given_in_the_reference",
+            ),
+            pytest.param(
+                {"push_to": REPOSITORY, "tag": "v3"},
+                True,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "v3"),
+                        prebuilt_image=None,
+                    ),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="tag_flag_composes_with_push_to",
+            ),
+            pytest.param(
+                {"push_to": REPOSITORY, "image": "app:dev"},
+                False,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "latest"),
+                        prebuilt_image="app:dev",
+                    ),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="prebuilt_image_is_retagged_for_push_to_without_docker_checks",
+            ),
+            pytest.param(
+                {
+                    "push_to": REPOSITORY,
+                    "placement": RequestedPlacement("listener-1", "agents"),
+                },
+                True,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "latest"),
+                        prebuilt_image=None,
+                    ),
+                    create_only=CreateOnlySettings(
+                        RequestedPlacement("listener-1", "agents")
+                    ),
+                ),
+                id="push_to_carries_the_requested_placement",
+            ),
+            pytest.param(
+                {
+                    "push_to": REPOSITORY,
+                    "image_pull_secrets": ("regcred", "other-secret"),
+                },
+                True,
+                CustomerRegistrySource(
+                    image=BuildAndPush(
+                        reference=ImageReference(REPOSITORY, "latest"),
+                        prebuilt_image=None,
+                    ),
+                    create_only=CreateOnlySettings(
+                        RequestedPlacement(), ("regcred", "other-secret")
+                    ),
+                ),
+                id="push_to_carries_the_image_pull_secrets",
+            ),
+            pytest.param(
+                {"image_uri": f"{REPOSITORY}@sha256:abc123"},
+                True,
+                CustomerRegistrySource(
+                    image=PublishedImage(f"{REPOSITORY}@sha256:abc123"),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="image_uri_selects_the_published_image_source_by_digest",
+            ),
+            pytest.param(
+                {"image_uri": f"  {REPOSITORY}@sha256:abc123  "},
+                False,
+                CustomerRegistrySource(
+                    image=PublishedImage(f"{REPOSITORY}@sha256:abc123"),
+                    create_only=CreateOnlySettings(RequestedPlacement()),
+                ),
+                id="image_uri_needs_no_local_docker_and_is_trimmed",
+            ),
+            pytest.param(
+                {
+                    "image_uri": f"{REPOSITORY}@sha256:abc123",
+                    "placement": RequestedPlacement("listener-1", "agents"),
+                },
+                False,
+                CustomerRegistrySource(
+                    image=PublishedImage(f"{REPOSITORY}@sha256:abc123"),
+                    create_only=CreateOnlySettings(
+                        RequestedPlacement("listener-1", "agents")
+                    ),
+                ),
+                id="image_uri_carries_the_requested_placement",
+            ),
+            pytest.param(
+                {"remote_build_flag": True},
+                True,
+                RemoteBuildSource(),
+                id="remote_flag_selects_the_source_upload",
+            ),
+            pytest.param(
+                {},
+                False,
+                RemoteBuildSource(),
+                id="no_local_docker_falls_back_to_the_source_upload",
+            ),
+            pytest.param(
+                {},
+                True,
+                ManagedRegistrySource(
+                    prebuilt_image=None, image_name=None, tag="latest"
+                ),
+                id="local_docker_selects_the_internal_docker_source",
+            ),
+            pytest.param(
+                {"image": "app:dev", "tag": "v1"},
+                False,
+                ManagedRegistrySource(
+                    prebuilt_image="app:dev", image_name=None, tag="v1"
+                ),
+                id="prebuilt_image_forces_the_internal_docker_source",
+            ),
+        ],
+    )
+    def test_flags_select_one_source(
+        self, monkeypatch, mocker, flags, docker_available, expected
+    ):
+        mocker.patch(
+            "langgraph_cli.deploy._get_emitter", return_value=mocker.MagicMock()
+        )
+        monkeypatch.setattr(
+            deploy_mod,
+            "can_build_locally",
+            lambda: (True, None) if docker_available else (False, "Docker is required"),
         )
 
-    def test_staging_host_url(self):
-        assert (
-            _smith_dashboard_base_url("https://staging.api.host.langchain.com")
-            == "https://staging.smith.langchain.com"
+        assert _select_source(**{**self.OPTIONS, **flags}) == expected
+
+    def test_push_to_build_requires_local_docker(self, monkeypatch):
+        monkeypatch.setattr(
+            deploy_mod, "can_build_locally", lambda: (False, "Docker is required")
         )
 
-    def test_localhost(self):
-        assert (
-            _smith_dashboard_base_url("http://localhost:8080")
-            == "http://localhost:8080"
-        )
+        with pytest.raises(click.UsageError, match="Docker is required"):
+            _select_source(**{**self.OPTIONS, "push_to": self.REPOSITORY})
 
-    def test_localhost_trailing_slash(self):
-        assert (
-            _smith_dashboard_base_url("http://localhost:8080/")
-            == "http://localhost:8080"
-        )
+    @pytest.mark.parametrize(
+        ("flags", "message"),
+        [
+            pytest.param(
+                {"push_to": REPOSITORY, "remote_build_flag": True},
+                "--push-to cannot be combined with --remote.",
+                id="push_to_with_remote",
+            ),
+            pytest.param(
+                {"push_to": f"{REPOSITORY}:v1", "tag": "v2"},
+                "already includes a tag",
+                id="push_to_with_a_tag_and_the_tag_flag",
+            ),
+            pytest.param(
+                {"push_to": f"{REPOSITORY}@sha256:abc"},
+                "not a digest",
+                id="push_to_with_a_digest",
+            ),
+            pytest.param(
+                {"image": "app:dev", "remote_build_flag": True},
+                "--image cannot be combined with --remote builds.",
+                id="image_with_remote",
+            ),
+            pytest.param(
+                {"placement": RequestedPlacement(listener_id="listener-1")},
+                "only apply when creating a deployment with --push-to",
+                id="listener_without_push_to",
+            ),
+            pytest.param(
+                {"placement": RequestedPlacement(k8s_namespace="agents")},
+                "only apply when creating a deployment with --push-to",
+                id="namespace_without_push_to",
+            ),
+            pytest.param(
+                {"image_pull_secrets": ("regcred",)},
+                "only apply when creating a deployment with --push-to",
+                id="image_pull_secret_without_push_to",
+            ),
+            pytest.param(
+                {"image_uri": REPOSITORY, "push_to": REPOSITORY},
+                "--image-uri cannot be combined with --push-to.",
+                id="image_uri_with_push_to",
+            ),
+            pytest.param(
+                {"image_uri": REPOSITORY, "image": "app:dev"},
+                "--image-uri cannot be combined with --image.",
+                id="image_uri_with_image",
+            ),
+            pytest.param(
+                {"image_uri": REPOSITORY, "tag": "v2"},
+                "--image-uri cannot be combined with --tag.",
+                id="image_uri_with_tag",
+            ),
+            pytest.param(
+                {"image_uri": REPOSITORY, "remote_build_flag": True},
+                "--image-uri cannot be combined with --remote.",
+                id="image_uri_with_remote",
+            ),
+            pytest.param(
+                {"image_uri": ""},
+                "--image-uri must not be empty.",
+                id="image_uri_empty",
+            ),
+            pytest.param(
+                {"image_uri": "   "},
+                "--image-uri must not be empty.",
+                id="image_uri_blank",
+            ),
+            pytest.param(
+                {"image_uri": f"{REPOSITORY}:v1.2.3"},
+                "--image-uri must pin a digest",
+                id="image_uri_with_a_mutable_tag",
+            ),
+            pytest.param(
+                {"image_uri": REPOSITORY},
+                "--image-uri must pin a digest",
+                id="image_uri_without_any_tag_or_digest",
+            ),
+        ],
+    )
+    def test_conflicting_flags_are_rejected(self, monkeypatch, flags, message):
+        monkeypatch.setattr(deploy_mod, "can_build_locally", lambda: (True, None))
 
-    def test_127_0_0_1(self):
-        assert (
-            _smith_dashboard_base_url("http://127.0.0.1:3000")
-            == "http://127.0.0.1:3000"
-        )
-
-    def test_unknown_domain_returns_default(self):
-        assert (
-            _smith_dashboard_base_url("https://custom.example.com")
-            == "https://smith.langchain.com"
-        )
+        with pytest.raises(click.UsageError, match=message):
+            _select_source(**{**self.OPTIONS, **flags})
 
 
 class TestResolvePushedImageDigest:
@@ -644,6 +947,16 @@ class TestResolvePushedImageDigest:
         )
         assert out == "us-central1-docker.pkg.dev/proj/repo@sha256:abc123"
 
+    def test_registry_port_without_tag_still_resolves_the_digest(self):
+        runner = self._runner('["localhost:5000/repo@sha256:abc123"]')
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image="localhost:5000/repo",
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == "localhost:5000/repo@sha256:abc123"
+
     def test_empty_repodigests_falls_back_with_warning(self, mocker):
         emitter = mocker.MagicMock()
         mocker.patch("langgraph_cli.deploy._get_emitter", return_value=emitter)
@@ -747,3 +1060,357 @@ class TestResolvePushedImageDigest:
         frame_locals = captured["coro"].cr_frame.f_locals
         assert "--config" not in frame_locals["args"]
         captured["coro"].close()
+
+
+class TestListener:
+    @pytest.mark.parametrize(
+        ("resource", "expected"),
+        [
+            pytest.param(
+                {
+                    "id": "listener-1",
+                    "compute_id": "prod-cluster",
+                    "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
+                },
+                Listener("listener-1", "prod-cluster", ("agents", "agents-staging")),
+                id="reads_id_cluster_and_namespaces",
+            ),
+            pytest.param(
+                {"id": "listener-1", "compute_id": "c", "compute_config": {}},
+                Listener("listener-1", "c", ()),
+                id="missing_namespaces",
+            ),
+            pytest.param(
+                {"id": "listener-1", "compute_id": "c", "compute_config": None},
+                Listener("listener-1", "c", ()),
+                id="null_compute_config",
+            ),
+            pytest.param(
+                {"id": "listener-1"},
+                Listener("listener-1", "", ()),
+                id="only_an_id",
+            ),
+        ],
+    )
+    def test_from_resource_reads_the_control_plane_shape(self, resource, expected):
+        assert Listener.from_resource(resource) == expected
+
+
+ONE_NAMESPACE = Listener("listener-1", "prod-cluster", ("agents",))
+TWO_NAMESPACES = Listener("listener-2", "multi-cluster", ("agents", "agents-staging"))
+NO_NAMESPACE = Listener("listener-3", "broken-cluster", ())
+
+
+class TestRequestedPlacement:
+    @pytest.mark.parametrize(
+        ("request_", "listeners", "expected"),
+        [
+            pytest.param(
+                RequestedPlacement(), (), Unplaced(), id="no_listeners_no_request"
+            ),
+            pytest.param(
+                RequestedPlacement(),
+                (ONE_NAMESPACE,),
+                OnListener("listener-1", "agents"),
+                id="uses_the_only_possible_answer",
+            ),
+            pytest.param(
+                RequestedPlacement(k8s_namespace="agents-staging"),
+                (TWO_NAMESPACES,),
+                OnListener("listener-2", "agents-staging"),
+                id="namespace_alone_picks_the_only_listener",
+            ),
+        ],
+    )
+    def test_resolves_to_a_placement(self, request_, listeners, expected):
+        assert request_.among(listeners) == expected
+
+    @pytest.mark.parametrize(
+        ("request_", "listeners", "message"),
+        [
+            pytest.param(
+                RequestedPlacement(listener_id="listener-1"),
+                (),
+                "no listeners",
+                id="workspace_has_no_listeners",
+            ),
+            pytest.param(
+                RequestedPlacement(),
+                (ONE_NAMESPACE, TWO_NAMESPACES),
+                "--listener-id",
+                id="several_listeners_need_a_choice",
+            ),
+            pytest.param(
+                RequestedPlacement(k8s_namespace="agents"),
+                (ONE_NAMESPACE, TWO_NAMESPACES),
+                "--listener-id",
+                id="namespace_alone_is_ambiguous_with_several_listeners",
+            ),
+            pytest.param(
+                RequestedPlacement(k8s_namespace="agents"),
+                (),
+                "no listeners",
+                id="namespace_without_any_listener",
+            ),
+            pytest.param(
+                RequestedPlacement(),
+                (TWO_NAMESPACES,),
+                "--k8s-namespace",
+                id="several_namespaces_need_a_choice",
+            ),
+        ],
+    )
+    def test_refuses_and_names_the_choices(self, request_, listeners, message):
+        with pytest.raises(click.UsageError, match=message):
+            request_.among(listeners)
+
+    def test_the_error_lists_every_listener_with_its_cluster_and_namespaces(self):
+        with pytest.raises(click.UsageError) as error:
+            RequestedPlacement().among((ONE_NAMESPACE, TWO_NAMESPACES))
+
+        assert "listener-1" in error.value.message
+        assert "prod-cluster" in error.value.message
+        assert "agents-staging" in error.value.message
+
+    @pytest.mark.parametrize(
+        ("placement", "expected"),
+        [
+            pytest.param(Unplaced(), {}, id="unplaced_adds_nothing"),
+            pytest.param(
+                OnListener("listener-1", "agents"),
+                {
+                    "listener_id": "listener-1",
+                    "listener_config": {"k8s_namespace": "agents"},
+                },
+                id="placed_carries_listener_and_namespace",
+            ),
+        ],
+    )
+    def test_source_config_matches_the_control_plane_shape(self, placement, expected):
+        assert placement.source_config() == expected
+
+
+def test_finding_a_deployment_by_name_narrows_the_search_for_every_server_version():
+    seen: dict = {}
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        seen["params"] = dict(req.url.params)
+        return httpx.Response(
+            200,
+            json={"resources": [{"id": "dep-1", "name": "agent", "source": "github"}]},
+        )
+
+    client = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+    )
+
+    found = find_deployment_by_name(client, "agent")
+
+    assert seen["params"] == {
+        "name": "agent",
+        "name_contains": "agent",
+        "limit": "100",
+    }
+    assert found == ExistingDeployment("dep-1", "github")
+
+
+def test_a_server_that_ignores_the_exact_name_filter_never_matches_another_deployment():
+    client = HostBackendClient(
+        "https://api.example.com",
+        "key",
+        transport=httpx.MockTransport(
+            lambda req: httpx.Response(
+                200,
+                json={
+                    "resources": [
+                        {
+                            "id": "dep-other",
+                            "name": "another-teams-agent",
+                            "source": "external_docker",
+                        }
+                    ]
+                },
+            )
+        ),
+    )
+
+    assert find_deployment_by_name(client, "brand-new-agent") is None
+
+
+def test_a_full_page_without_a_match_refuses_to_claim_the_name_is_free():
+    page = [
+        {"id": f"dep-{index}", "name": f"other-agent-{index}"} for index in range(100)
+    ]
+    client = HostBackendClient(
+        "https://api.example.com",
+        "key",
+        transport=httpx.MockTransport(
+            lambda req: httpx.Response(200, json={"resources": page})
+        ),
+    )
+
+    with pytest.raises(click.ClickException, match="--deployment-id"):
+        find_deployment_by_name(client, "brand-new-agent")
+
+
+def test_a_partial_page_without_a_match_means_the_name_is_free():
+    client = HostBackendClient(
+        "https://api.example.com",
+        "key",
+        transport=httpx.MockTransport(
+            lambda req: httpx.Response(
+                200, json={"resources": [{"id": "dep-1", "name": "other"}]}
+            )
+        ),
+    )
+
+    assert find_deployment_by_name(client, "brand-new-agent") is None
+
+
+@pytest.mark.parametrize(
+    "resource",
+    [
+        pytest.param({"compute_id": "c"}, id="no_id"),
+        pytest.param({"id": ""}, id="empty_id"),
+    ],
+)
+def test_a_listener_without_an_id_is_refused(resource):
+    with pytest.raises(HostBackendError, match="without an id"):
+        Listener.from_resource(resource)
+
+
+def test_a_deployment_id_with_listener_flags_is_refused_without_probing_docker(
+    monkeypatch,
+):
+    def explode() -> tuple[bool, str | None]:
+        raise AssertionError("docker must not be probed for an argv-only conflict")
+
+    monkeypatch.setattr(deploy_mod, "can_build_locally", explode)
+
+    with pytest.raises(click.UsageError, match="dep-1"):
+        _select_source(
+            push_to="registry.example.com/app",
+            image=None,
+            image_uri=None,
+            image_name=None,
+            tag=None,
+            remote_build_flag=None,
+            placement=RequestedPlacement(listener_id="listener-1"),
+            image_pull_secrets=(),
+            selector=ById("dep-1"),
+        )
+
+
+def test_a_deployment_id_with_image_pull_secrets_is_refused_without_probing_docker(
+    monkeypatch,
+):
+    def explode() -> tuple[bool, str | None]:
+        raise AssertionError("docker must not be probed for an argv-only conflict")
+
+    monkeypatch.setattr(deploy_mod, "can_build_locally", explode)
+
+    with pytest.raises(click.UsageError, match="dep-1"):
+        _select_source(
+            push_to="registry.example.com/app",
+            image=None,
+            image_uri=None,
+            image_name=None,
+            tag=None,
+            remote_build_flag=None,
+            placement=RequestedPlacement(),
+            image_pull_secrets=("regcred",),
+            selector=ById("dep-1"),
+        )
+
+
+class TestResourceSpec:
+    def test_no_secrets_keeps_the_operator_default(self):
+        assert _resource_spec(()) == {}
+
+    def test_secrets_become_local_object_references_in_order(self):
+        assert _resource_spec(("regcred", "other-secret")) == {
+            "image_pull_secrets": [
+                {"name": "regcred"},
+                {"name": "other-secret"},
+            ],
+        }
+
+
+class TestCreateOnlySettings:
+    @pytest.mark.parametrize(
+        "name",
+        [
+            pytest.param("Bad_Name", id="uppercase_and_underscore"),
+            pytest.param("", id="empty"),
+            pytest.param("-leading-hyphen", id="leading_hyphen"),
+            pytest.param("a" * 254, id="too_long"),
+        ],
+    )
+    def test_an_invalid_secret_name_is_rejected_up_front(self, name):
+        with pytest.raises(click.UsageError, match="not a valid Kubernetes"):
+            CreateOnlySettings(RequestedPlacement(), (name,))
+
+    def test_a_valid_secret_name_is_accepted(self):
+        CreateOnlySettings(RequestedPlacement(), ("regcred-1.example",))
+
+    def test_ensure_not_existing_mentions_the_api_and_ui_for_pull_secrets(self):
+        settings = CreateOnlySettings(RequestedPlacement(), ("regcred",))
+        with pytest.raises(click.UsageError, match="API or the LangSmith UI"):
+            settings.ensure_not_existing("dep-1")
+
+    def test_ensure_not_existing_keeps_the_placement_message_unchanged(self):
+        settings = CreateOnlySettings(RequestedPlacement(listener_id="listener-1"))
+        with pytest.raises(
+            click.UsageError,
+            match="Listener and namespace are fixed when a deployment is created",
+        ):
+            settings.ensure_not_existing("dep-1")
+
+
+class TestPlacementOnAKnownListener:
+    @pytest.mark.parametrize(
+        ("request_", "listener", "expected"),
+        [
+            pytest.param(
+                RequestedPlacement(listener_id="listener-1"),
+                ONE_NAMESPACE,
+                OnListener("listener-1", "agents"),
+                id="the_only_namespace_is_used",
+            ),
+            pytest.param(
+                RequestedPlacement(listener_id="listener-2", k8s_namespace="agents"),
+                TWO_NAMESPACES,
+                OnListener("listener-2", "agents"),
+                id="the_chosen_namespace_is_used",
+            ),
+        ],
+    )
+    def test_places_on_the_listener(self, request_, listener, expected):
+        assert request_.on(listener) == expected
+
+    @pytest.mark.parametrize(
+        ("request_", "listener", "message"),
+        [
+            pytest.param(
+                RequestedPlacement(listener_id="listener-2"),
+                TWO_NAMESPACES,
+                "--k8s-namespace",
+                id="several_namespaces_need_a_choice",
+            ),
+            pytest.param(
+                RequestedPlacement(listener_id="listener-2", k8s_namespace="nope"),
+                TWO_NAMESPACES,
+                "does not serve namespace",
+                id="unknown_namespace",
+            ),
+            pytest.param(
+                RequestedPlacement(listener_id="listener-3"),
+                NO_NAMESPACE,
+                "serves no namespaces",
+                id="listener_without_namespaces",
+            ),
+        ],
+    )
+    def test_refuses_and_names_the_namespaces(self, request_, listener, message):
+        with pytest.raises(click.UsageError, match=message):
+            request_.on(listener)

libs/cli/tests/unit_tests/test_exec.py

@@ -0,0 +1,17 @@
+import sys
+
+from langgraph_cli.exec import subp_exec
+
+
+async def test_verbose_prints_command_but_not_stdin(capsys):
+    await subp_exec(
+        sys.executable,
+        "-c",
+        "import sys; sys.stdin.read()",
+        input="registry-push-token\n",
+        verbose=True,
+    )
+
+    out = capsys.readouterr().out
+    assert out.startswith(f"+ {sys.executable} -c"), out
+    assert "registry-push-token" not in out, out

libs/cli/tests/unit_tests/test_host_backend.py

@@ -3,29 +3,16 @@ import json
 import httpx
 import pytest
 
-from langgraph_cli.host_backend import HostBackendClient, HostBackendError
-
-
-@pytest.fixture
-def mock_transport():
-    return httpx.MockTransport(lambda req: httpx.Response(200, json={"ok": True}))
-
-
-@pytest.fixture
-def client(mock_transport):
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=mock_transport,
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
-    )
-    return c
+from langgraph_cli.host_backend import (
+    ControlPlaneEndpoints,
+    HostBackendClient,
+    HostBackendError,
+)
 
 
 def test_constructor_strips_trailing_slash():
     c = HostBackendClient("https://api.example.com/", "key")
-    assert str(c._client.base_url) == "https://api.example.com"
+    assert c.base_url == "https://api.example.com"
 
 
 def test_constructor_empty_url_raises():
@@ -39,12 +26,8 @@ def test_request_sends_headers():
         assert req.headers["accept"] == "application/json"
         return httpx.Response(200, json={"ok": True})
 
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "test-key", transport=httpx.MockTransport(handler)
     )
     result = c._request("GET", "/test")
     assert result == {"ok": True}
@@ -56,12 +39,8 @@ def test_request_sends_json_payload():
         assert req.content == b'{"key":"value"}'
         return httpx.Response(200, json={"created": True})
 
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "test-key", transport=httpx.MockTransport(handler)
     )
     result = c._request("POST", "/test", {"key": "value"})
     assert result == {"created": True}
@@ -69,25 +48,13 @@ def test_request_sends_json_payload():
 
 def test_request_empty_body_returns_none():
     transport = httpx.MockTransport(lambda req: httpx.Response(200, content=b""))
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=transport,
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
-    )
+    c = HostBackendClient("https://api.example.com", "test-key", transport=transport)
     assert c._request("DELETE", "/test") is None
 
 
 def test_request_http_error_raises():
     transport = httpx.MockTransport(lambda req: httpx.Response(404, text="not found"))
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=transport,
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
-    )
+    c = HostBackendClient("https://api.example.com", "test-key", transport=transport)
     with pytest.raises(HostBackendError, match="404"):
         c._request("GET", "/missing")
 
@@ -96,13 +63,7 @@ def test_request_invalid_json_raises():
     transport = httpx.MockTransport(
         lambda req: httpx.Response(200, content=b"not json")
     )
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=transport,
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
-    )
+    c = HostBackendClient("https://api.example.com", "test-key", transport=transport)
     with pytest.raises(HostBackendError, match="Failed to decode"):
         c._request("GET", "/bad-json")
 
@@ -111,84 +72,20 @@ def test_request_transport_error_raises():
     def handler(req: httpx.Request) -> httpx.Response:
         raise httpx.ConnectError("connection refused")
 
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "test-key", transport=httpx.MockTransport(handler)
     )
     with pytest.raises(HostBackendError, match="connection refused"):
         c._request("GET", "/test")
 
 
-def test_create_deployment(client):
-    result = client.create_deployment(
-        name="my-deploy", deployment_type="dev", source="internal_docker"
-    )
-    assert result == {"ok": True}
-
-
-def test_get_deployment(client):
-    result = client.get_deployment("dep-123")
-    assert result == {"ok": True}
-
-
-def test_list_deployments(client):
-    result = client.list_deployments("my-app")
-    assert result == {"ok": True}
-
-
-def test_list_deployments_sends_query_params():
-    def handler(req: httpx.Request) -> httpx.Response:
-        assert req.url.path == "/v2/deployments"
-        assert req.url.params["name_contains"] == "my app"
-        return httpx.Response(200, json={"ok": True})
-
-    c = HostBackendClient("https://api.example.com", "test-key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "test-key", "Accept": "application/json"},
-        timeout=30,
-    )
-    result = c.list_deployments("my app")
-    assert result == {"ok": True}
-
-
-def test_delete_deployment(client):
-    result = client.delete_deployment("dep-123")
-    assert result == {"ok": True}
-
-
-def test_request_push_token(client):
-    result = client.request_push_token("dep-123")
-    assert result == {"ok": True}
-
-
-def test_update_deployment(client):
-    result = client.update_deployment(
-        "dep-123", "image:latest", secrets=[{"name": "KEY", "value": "val"}]
-    )
-    assert result == {"ok": True}
-
-
-def test_update_deployment_no_secrets(client):
-    result = client.update_deployment("dep-123", "image:latest")
-    assert result == {"ok": True}
-
-
 def _capturing_client(captured: dict) -> HostBackendClient:
     def handler(req: httpx.Request) -> httpx.Response:
         captured["body"] = req.read()
         return httpx.Response(200, json={"ok": True})
 
-    c = HostBackendClient("https://api.example.com", "key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
     )
     return c
 
@@ -199,6 +96,7 @@ def test_update_deployment_forwards_tracked_packages():
     c.update_deployment(
         "dep-123",
         "image:latest",
+        revision_source="internal_docker",
         tracked_packages=["google-adk:1.0.0"],
     )
     body = json.loads(captured["body"])
@@ -209,7 +107,7 @@ def test_update_deployment_forwards_tracked_packages():
 def test_update_deployment_omits_tracked_packages_when_absent():
     captured: dict = {}
     c = _capturing_client(captured)
-    c.update_deployment("dep-123", "image:latest")
+    c.update_deployment("dep-123", "image:latest", revision_source="internal_docker")
     body = json.loads(captured["body"])
     assert "tracked_packages" not in body
 
@@ -241,33 +139,14 @@ def test_update_deployment_internal_source_omits_tracked_packages_when_absent():
     assert "tracked_packages" not in body
 
 
-def test_list_revisions(client):
-    result = client.list_revisions("dep-123", limit=5)
-    assert result == {"ok": True}
-
-
-def test_get_revision(client):
-    result = client.get_revision("dep-123", "rev-456")
-    assert result == {"ok": True}
-
-
-def test_get_build_logs(client):
-    result = client.get_build_logs("proj-1", "rev-1", {"limit": 10})
-    assert result == {"ok": True}
-
-
 def test_get_deploy_logs_all_revisions():
     def handler(req: httpx.Request) -> httpx.Response:
         assert "/v1/projects/proj-1/deploy_logs" in str(req.url)
         assert "/revisions/" not in str(req.url)
         return httpx.Response(200, json={"logs": [{"message": "running"}]})
 
-    c = HostBackendClient("https://api.example.com", "key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
     )
     result = c.get_deploy_logs("proj-1", {"limit": 10})
     assert result == {"logs": [{"message": "running"}]}
@@ -278,12 +157,520 @@ def test_get_deploy_logs_specific_revision():
         assert "/v1/projects/proj-1/revisions/rev-2/deploy_logs" in str(req.url)
         return httpx.Response(200, json={"logs": []})
 
-    c = HostBackendClient("https://api.example.com", "key")
-    c._client = httpx.Client(
-        base_url="https://api.example.com",
-        transport=httpx.MockTransport(handler),
-        headers={"X-Api-Key": "key", "Accept": "application/json"},
-        timeout=30,
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
     )
     result = c.get_deploy_logs("proj-1", {"limit": 10}, revision_id="rev-2")
     assert result == {"logs": []}
+
+
+def _routing_client(seen: dict) -> HostBackendClient:
+    def handler(req: httpx.Request) -> httpx.Response:
+        seen["method"] = req.method
+        seen["url"] = str(req.url)
+        return httpx.Response(200, json={"ok": True})
+
+    c = HostBackendClient(
+        "https://api.example.com/prefix", "key", transport=httpx.MockTransport(handler)
+    )
+    return c
+
+
+@pytest.mark.parametrize(
+    ("call", "expected_body"),
+    [
+        pytest.param(
+            lambda c: c.create_deployment(
+                name="my-deploy",
+                source="internal_docker",
+                source_config={"deployment_type": "dev"},
+                source_revision_config={},
+            ),
+            {
+                "name": "my-deploy",
+                "source": "internal_docker",
+                "source_config": {"deployment_type": "dev"},
+                "source_revision_config": {},
+            },
+            id="internal_docker_create_omits_secrets_key_when_not_given",
+        ),
+        pytest.param(
+            lambda c: c.create_deployment(
+                name="my-deploy",
+                source="internal_docker",
+                source_config={"deployment_type": "prod"},
+                source_revision_config={},
+                secrets=[{"name": "KEY", "value": "val"}],
+            ),
+            {
+                "name": "my-deploy",
+                "source": "internal_docker",
+                "source_config": {"deployment_type": "prod"},
+                "source_revision_config": {},
+                "secrets": [{"name": "KEY", "value": "val"}],
+            },
+            id="internal_docker_create_forwards_secrets",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment(
+                "dep-123",
+                "registry.example.com/app@sha256:abc",
+                revision_source="internal_docker",
+                secrets=[{"name": "KEY", "value": "val"}],
+            ),
+            {
+                "revision_source": "internal_docker",
+                "source_revision_config": {
+                    "image_uri": "registry.example.com/app@sha256:abc"
+                },
+                "secrets": [{"name": "KEY", "value": "val"}],
+            },
+            id="internal_docker_revision_names_its_source",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment_internal_source(
+                "dep-123",
+                source_tarball_path="tarballs/src.tgz",
+                config_path="langgraph.json",
+                secrets=[],
+                install_command="yarn install",
+                build_command="yarn build",
+            ),
+            {
+                "revision_source": "internal_source",
+                "source_revision_config": {
+                    "source_tarball_path": "tarballs/src.tgz",
+                    "langgraph_config_path": "langgraph.json",
+                },
+                "source_config": {
+                    "install_command": "yarn install",
+                    "build_command": "yarn build",
+                },
+                "secrets": [],
+            },
+            id="internal_source_revision_sends_js_build_commands",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment_internal_source(
+                "dep-123",
+                source_tarball_path="tarballs/src.tgz",
+                config_path="langgraph.json",
+            ),
+            {
+                "revision_source": "internal_source",
+                "source_revision_config": {
+                    "source_tarball_path": "tarballs/src.tgz",
+                    "langgraph_config_path": "langgraph.json",
+                },
+            },
+            id="internal_source_revision_omits_source_config_without_commands",
+        ),
+        pytest.param(
+            lambda c: c.create_deployment(
+                name="agent",
+                source="external_docker",
+                source_config={"resource_spec": {}},
+                source_revision_config={
+                    "image_uri": "registry.example.com/agent@sha256:1"
+                },
+                secrets=[],
+            ),
+            {
+                "name": "agent",
+                "source": "external_docker",
+                "source_config": {"resource_spec": {}},
+                "source_revision_config": {
+                    "image_uri": "registry.example.com/agent@sha256:1"
+                },
+                "secrets": [],
+            },
+            id="create_sends_the_source_configs_as_given",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment(
+                "dep-1", "registry.example.com/agent@sha256:2", revision_source=None
+            ),
+            {
+                "source_revision_config": {
+                    "image_uri": "registry.example.com/agent@sha256:2"
+                }
+            },
+            id="revision_without_source_override_omits_revision_source",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment(
+                "dep-1",
+                "registry.example.com/agent@sha256:2",
+                revision_source="internal_docker",
+                tracked_packages=["langgraph:1.0.0"],
+            ),
+            {
+                "revision_source": "internal_docker",
+                "source_revision_config": {
+                    "image_uri": "registry.example.com/agent@sha256:2"
+                },
+                "tracked_packages": ["langgraph:1.0.0"],
+            },
+            id="revision_with_source_override_names_it",
+        ),
+    ],
+)
+def test_request_body_matches_control_plane_contract(call, expected_body):
+    captured: dict = {}
+    call(_capturing_client(captured))
+    assert json.loads(captured["body"]) == expected_body
+
+
+@pytest.mark.parametrize(
+    ("call", "method", "route"),
+    [
+        pytest.param(
+            lambda c: c.create_deployment(
+                name="n",
+                source="internal_docker",
+                source_config={"deployment_type": "dev"},
+                source_revision_config={},
+            ),
+            "POST",
+            "/v2/deployments",
+            id="create_deployment",
+        ),
+        pytest.param(
+            lambda c: c.get_deployment("dep-1"),
+            "GET",
+            "/v2/deployments/dep-1",
+            id="get_deployment",
+        ),
+        pytest.param(
+            lambda c: c.delete_deployment("dep-1"),
+            "DELETE",
+            "/v2/deployments/dep-1",
+            id="delete_deployment",
+        ),
+        pytest.param(
+            lambda c: c.update_deployment("dep-1", "img", revision_source=None),
+            "PATCH",
+            "/v2/deployments/dep-1",
+            id="patch_deployment",
+        ),
+        pytest.param(
+            lambda c: c.request_push_token("dep-1"),
+            "POST",
+            "/v2/deployments/dep-1/push-token",
+            id="push_token",
+        ),
+        pytest.param(
+            lambda c: c.request_upload_url("dep-1"),
+            "POST",
+            "/v2/deployments/dep-1/upload-url",
+            id="upload_url",
+        ),
+        pytest.param(
+            lambda c: c.list_revisions("dep-1", limit=5),
+            "GET",
+            "/v2/deployments/dep-1/revisions?limit=5",
+            id="list_revisions_puts_limit_in_query",
+        ),
+        pytest.param(
+            lambda c: c.get_revision("dep-1", "rev-2"),
+            "GET",
+            "/v2/deployments/dep-1/revisions/rev-2",
+            id="get_revision",
+        ),
+        pytest.param(
+            lambda c: c.get_build_logs("dep-1", "rev-2", {"limit": 10}),
+            "POST",
+            "/v1/projects/dep-1/revisions/rev-2/build_logs",
+            id="build_logs",
+        ),
+    ],
+)
+def test_request_targets_control_plane_route_under_base_url(call, method, route):
+    seen: dict = {}
+    call(_routing_client(seen))
+    assert (seen["method"], seen["url"]) == (
+        method,
+        f"https://api.example.com/prefix{route}",
+    )
+
+
+def test_injected_transport_receives_requests_under_the_prefixed_base_url():
+    seen: dict = {}
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        seen["url"] = str(req.url)
+        seen["api_key"] = req.headers["x-api-key"]
+        return httpx.Response(200, json={"ok": True})
+
+    c = HostBackendClient(
+        "https://smith.example.com/api-host",
+        "key",
+        transport=httpx.MockTransport(handler),
+    )
+
+    assert c.list_revisions("dep-1", limit=2) == []
+    assert seen == {
+        "url": "https://smith.example.com/api-host/v2/deployments/dep-1/revisions?limit=2",
+        "api_key": "key",
+    }
+
+
+CLOUD = ("https://api.host.langchain.com", "https://smith.langchain.com")
+
+
+@pytest.mark.parametrize(
+    ("host_url", "langsmith_endpoint", "expected"),
+    [
+        pytest.param(None, None, CLOUD, id="nothing_configured_targets_cloud"),
+        pytest.param(
+            None, "https://api.smith.langchain.com", CLOUD, id="cloud_langsmith_api"
+        ),
+        pytest.param(
+            None,
+            "https://api.smith.langchain.com/api/v1",
+            CLOUD,
+            id="cloud_langsmith_api_with_versioned_path",
+        ),
+        pytest.param(
+            None, "https://api.langchain.com", CLOUD, id="cloud_langchain_api_alias"
+        ),
+        pytest.param(
+            None,
+            "https://xapi.smith.langchain.com",
+            CLOUD,
+            id="lookalike_cloud_host_is_not_rewritten_into_a_control_plane",
+        ),
+        pytest.param(
+            None,
+            "https://eu.api.smith.langchain.com",
+            ("https://eu.api.host.langchain.com", "https://eu.smith.langchain.com"),
+            id="eu_cloud_maps_to_eu_control_plane",
+        ),
+        pytest.param(
+            None,
+            "https://dev.api.smith.langchain.com",
+            ("https://dev.api.host.langchain.com", "https://dev.smith.langchain.com"),
+            id="dev_cloud_maps_to_dev_control_plane",
+        ),
+        pytest.param(
+            None,
+            "https://aks.smith.langchain.dev/api",
+            (
+                "https://aks.smith.langchain.dev/api-host",
+                "https://aks.smith.langchain.dev",
+            ),
+            id="self_hosted_api_path_becomes_api_host",
+        ),
+        pytest.param(
+            None,
+            "https://smith.example.com/api/v1",
+            ("https://smith.example.com/api-host", "https://smith.example.com"),
+            id="self_hosted_versioned_api_path_becomes_api_host",
+        ),
+        pytest.param(
+            None,
+            "https://smith.example.com",
+            ("https://smith.example.com/api-host", "https://smith.example.com"),
+            id="self_hosted_origin_gets_api_host_appended",
+        ),
+        pytest.param(
+            None,
+            "https://corp.example.com/langsmith/api/v1",
+            (
+                "https://corp.example.com/langsmith/api-host",
+                "https://corp.example.com/langsmith",
+            ),
+            id="self_hosted_path_prefix_is_kept",
+        ),
+        pytest.param(
+            "https://custom.host.example",
+            "https://aks.smith.langchain.dev/api",
+            ("https://custom.host.example", "https://smith.langchain.com"),
+            id="explicit_host_url_beats_langsmith_endpoint",
+        ),
+        pytest.param(
+            "https://api.host.langchain.com",
+            "https://aks.smith.langchain.dev/api",
+            CLOUD,
+            id="explicit_cloud_host_url_beats_self_hosted_endpoint",
+        ),
+        pytest.param(
+            "https://smith.example.com/api-host/",
+            None,
+            ("https://smith.example.com/api-host", "https://smith.example.com"),
+            id="explicit_api_host_url_derives_dashboard_root",
+        ),
+        pytest.param(
+            "https://corp.example.com/langsmith/api-host",
+            None,
+            (
+                "https://corp.example.com/langsmith/api-host",
+                "https://corp.example.com/langsmith",
+            ),
+            id="explicit_api_host_url_keeps_path_prefix_in_dashboard",
+        ),
+        pytest.param(
+            "http://localhost:8080",
+            None,
+            ("http://localhost:8080", "http://localhost:8080"),
+            id="localhost_dashboard_is_the_same_origin",
+        ),
+        pytest.param(
+            "http://localhost:8080/api-host",
+            None,
+            ("http://localhost:8080/api-host", "http://localhost:8080"),
+            id="localhost_api_host_dashboard_is_the_origin",
+        ),
+        pytest.param(
+            "https://eu.api.host.langchain.com",
+            None,
+            ("https://eu.api.host.langchain.com", "https://eu.smith.langchain.com"),
+            id="regional_control_plane_maps_to_regional_dashboard",
+        ),
+    ],
+)
+def test_control_plane_endpoints_resolve(host_url, langsmith_endpoint, expected):
+    endpoints = ControlPlaneEndpoints.resolve(host_url, langsmith_endpoint)
+
+    assert (endpoints.control_plane_url, endpoints.dashboard_url) == expected
+
+
+@pytest.mark.parametrize(
+    ("payload", "expected"),
+    [
+        pytest.param(
+            {"resources": [{"id": "a"}, {"id": "b"}]},
+            [{"id": "a"}, {"id": "b"}],
+            id="list_returns_the_resources",
+        ),
+        pytest.param({"resources": []}, [], id="empty_list"),
+        pytest.param({}, [], id="missing_key"),
+        pytest.param({"resources": None}, [], id="null_resources"),
+        pytest.param(
+            {"resources": ["nope", {"id": "a"}]}, [{"id": "a"}], id="skips_non_objects"
+        ),
+        pytest.param([], [], id="unexpected_envelope"),
+    ],
+)
+def test_list_endpoints_return_resource_objects(payload, expected):
+    def handler(req: httpx.Request) -> httpx.Response:
+        return httpx.Response(200, json=payload)
+
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+    )
+
+    assert c.list_deployments() == expected
+
+
+def test_list_listeners_asks_for_a_full_page():
+    seen: dict = {}
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        seen["url"] = str(req.url)
+        return httpx.Response(200, json={"resources": [{"id": "listener-1"}]})
+
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+    )
+
+    assert c.list_listeners() == [{"id": "listener-1"}]
+    assert seen["url"] == "https://api.example.com/v2/listeners?limit=100"
+
+
+@pytest.mark.parametrize(
+    ("control_plane_url", "expected"),
+    [
+        pytest.param("https://api.host.langchain.com", True, id="cloud"),
+        pytest.param("https://eu.api.host.langchain.com", True, id="cloud_region"),
+        pytest.param("https://dev.api.host.langchain.com", True, id="cloud_dev"),
+        pytest.param("https://smith.example.com/api-host", False, id="self_hosted"),
+        pytest.param(
+            "https://corp.example.com/langsmith/api-host",
+            False,
+            id="self_hosted_prefix",
+        ),
+        pytest.param("http://localhost:8080/api-host", False, id="local"),
+        pytest.param(
+            "https://evil-api.host.langchain.com", False, id="lookalike_needs_a_dot"
+        ),
+    ],
+)
+def test_is_cloud_recognises_the_managed_control_plane(control_plane_url, expected):
+    endpoints = ControlPlaneEndpoints.from_control_plane_url(control_plane_url)
+
+    assert endpoints.is_cloud is expected
+
+
+@pytest.mark.parametrize(
+    ("call", "expected_params"),
+    [
+        pytest.param(
+            lambda c: c.list_deployments(name="agent"),
+            {"name": "agent"},
+            id="exact_name_filters_server_side",
+        ),
+        pytest.param(
+            lambda c: c.list_deployments(name_contains="age"),
+            {"name_contains": "age"},
+            id="substring_search_keeps_its_own_parameter",
+        ),
+        pytest.param(
+            lambda c: c.list_deployments(),
+            {},
+            id="no_filter_sends_no_parameters",
+        ),
+        pytest.param(
+            lambda c: c.list_deployments(
+                name="agent", name_contains="agent", limit=100
+            ),
+            {"name": "agent", "name_contains": "agent", "limit": "100"},
+            id="both_filters_travel_together_for_older_servers",
+        ),
+    ],
+)
+def test_list_deployments_sends_one_name_filter(call, expected_params):
+    seen: dict = {}
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        seen.update(dict(req.url.params))
+        return httpx.Response(200, json={"resources": []})
+
+    call(
+        HostBackendClient(
+            "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+        )
+    )
+
+    assert seen == expected_params
+
+
+@pytest.mark.parametrize(
+    ("body", "expected"),
+    [
+        pytest.param(
+            {"detail": "Source configuration error: bad listener"},
+            "Source configuration error: bad listener",
+            id="fastapi_detail_is_unwrapped",
+        ),
+        pytest.param(
+            {"detail": {"loc": ["body"], "msg": "nope"}},
+            None,
+            id="a_structured_detail_is_left_alone",
+        ),
+        pytest.param({"other": "shape"}, None, id="an_unknown_shape_is_left_alone"),
+    ],
+)
+def test_error_detail_is_readable(body, expected):
+    c = HostBackendClient(
+        "https://api.example.com",
+        "key",
+        transport=httpx.MockTransport(lambda req: httpx.Response(400, json=body)),
+    )
+
+    with pytest.raises(HostBackendError) as error:
+        c.get_deployment("dep-1")
+
+    assert error.value.detail == expected
+    if expected is not None:
+        assert error.value.message.endswith(expected)

libs/cli/tests/unit_tests/test_image_reference.py

@@ -0,0 +1,71 @@
+import pytest
+
+from langgraph_cli.image_reference import ImageReference
+
+
+@pytest.mark.parametrize(
+    ("reference", "repository", "tag"),
+    [
+        pytest.param(
+            "registry.example.com/team/app:v1",
+            "registry.example.com/team/app",
+            "v1",
+            id="tag_after_last_slash",
+        ),
+        pytest.param(
+            "registry.example.com/team/app",
+            "registry.example.com/team/app",
+            None,
+            id="no_tag",
+        ),
+        pytest.param(
+            "localhost:5000/app",
+            "localhost:5000/app",
+            None,
+            id="registry_port_is_not_a_tag",
+        ),
+        pytest.param(
+            "localhost:5000/app:latest",
+            "localhost:5000/app",
+            "latest",
+            id="registry_port_with_tag",
+        ),
+        pytest.param("app:dev", "app", "dev", id="bare_name_with_tag"),
+    ],
+)
+def test_parse_splits_repository_and_tag(reference, repository, tag):
+    assert ImageReference.parse(reference) == ImageReference(repository, tag)
+
+
+def test_with_tag_replaces_the_tag():
+    assert ImageReference("r/app", "v1").with_tag("v2") == ImageReference("r/app", "v2")
+
+
+@pytest.mark.parametrize(
+    ("reference", "expected"),
+    [
+        pytest.param(ImageReference("r/app", "v1"), "r/app:v1", id="tagged"),
+        pytest.param(ImageReference("r/app"), "r/app", id="untagged"),
+    ],
+)
+def test_str_renders_the_docker_reference(reference, expected):
+    assert str(reference) == expected
+
+
+@pytest.mark.parametrize(
+    ("repo_digest", "expected"),
+    [
+        pytest.param("localhost:5000/app@sha256:abc", True, id="same_repository"),
+        pytest.param("localhost:5000/app-2@sha256:abc", False, id="other_repository"),
+        pytest.param("mirror.example.com/app@sha256:abc", False, id="other_registry"),
+    ],
+)
+def test_matches_digest_only_for_the_same_repository(repo_digest, expected):
+    assert ImageReference("localhost:5000/app", "v1").matches_digest(repo_digest) is (
+        expected
+    )
+
+
+def test_parse_rejects_a_digest_reference():
+    with pytest.raises(ValueError, match="digest"):
+        ImageReference.parse("registry.example.com/app@sha256:abc")

libs/cli/tests/unit_tests/test_util.py

@@ -3,6 +3,7 @@ from unittest.mock import patch
 from langgraph_cli.deploy import (
     _extract_deployment_url,
     format_deployments_table,
+    format_listeners_table,
     format_revisions_table,
 )
 from langgraph_cli.util import clean_empty_lines, warn_non_wolfi_distro
@@ -255,3 +256,34 @@ def test_format_revisions_table():
     assert "rev-456" in output
     assert "rev-789" in output
     assert "REPLACED" in output
+
+
+def test_format_listeners_table():
+    output = format_listeners_table(
+        [
+            {
+                "id": "listener-1",
+                "compute_id": "prod-cluster",
+                "compute_config": {"k8s_namespaces": ["agents"]},
+            },
+            {
+                "id": "listener-2",
+                "compute_id": "multi-cluster",
+                "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
+            },
+            {
+                "id": "listener-3",
+                "compute_id": "broken-cluster",
+            },
+        ]
+    )
+    assert "Listener ID" in output
+    assert "Compute ID" in output
+    assert "Namespaces" in output
+    assert "listener-1" in output
+    assert "prod-cluster" in output
+    assert "agents" in output
+    assert "listener-2" in output
+    assert "agents, agents-staging" in output
+    assert "listener-3" in output
+    assert "broken-cluster" in output

libs/cli/uv-examples/monorepo/uv.lock

@@ -39,24 +39,24 @@ wheels = [
 
 [[package]]
 name = "anyio"
-version = "4.13.0"
+version = "4.14.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "idna" },
     { name = "typing-extensions", marker = "python_full_version < '3.13'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/19/14/2c5dd9f512b66549ae92767a9c7b330ae88e1932ca57876909410251fe13/anyio-4.13.0.tar.gz", hash = "sha256:334b70e641fd2221c1505b3890c69882fe4a2df910cba14d97019b90b24439dc", size = 231622, upload-time = "2026-03-24T12:59:09.671Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/61/cc/a381afa6efea9f496eff839d4a6a1aed3bfafc7b3ab4b0d1b243a12573dd/anyio-4.14.2.tar.gz", hash = "sha256:cfa139f3ed1a23ee8f88a145ddb5ac7605b8bbfd8592baacd7ce3d8bb4313c7f", size = 260176, upload-time = "2026-07-12T20:29:07.082Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/da/42/e921fccf5015463e32a3cf6ee7f980a6ed0f395ceeaa45060b61d86486c2/anyio-4.13.0-py3-none-any.whl", hash = "sha256:08b310f9e24a9594186fd75b4f73f4a4152069e3853f1ed8bfbf58369f4ad708", size = 114353, upload-time = "2026-03-24T12:59:08.246Z" },
+    { url = "https://files.pythonhosted.org/packages/da/35/f2287558c17e29fafc8ef3daf819bb9834061cfa43bff8014f7df7f63bdc/anyio-4.14.2-py3-none-any.whl", hash = "sha256:9f505dda5ac9f0c8309b5e8bd445a8c2bf7246f3ce950121e45ea15bc41d1494", size = 125813, upload-time = "2026-07-12T20:29:05.763Z" },
 ]
 
 [[package]]
 name = "certifi"
-version = "2026.2.25"
+version = "2026.10.19"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/af/2d/7bf41579a8986e348fa033a31cdd0e4121114f6bce2457e8876010b092dd/certifi-2026.2.25.tar.gz", hash = "sha256:e887ab5cee78ea814d3472169153c2d12cd43b14bd03329a39a9c6e2e80bfba7", size = 155029, upload-time = "2026-02-25T02:54:17.342Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a6/bd/1436c50cc46699de0230fbaacc1d1de7bfec413176099949e9d5112e88f2/certifi-2026.10.19.tar.gz", hash = "sha256:035c1e85572b141bf1c3a3eff0e33a8eb74917522f2559075ff8d2fea780a1ae", size = 137598, upload-time = "2026-10-20T02:24:16.604Z" }
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libs/langgraph/Makefile

@@ -43,14 +43,31 @@ start-services:
 stop-services:
 	docker compose -f tests/compose-postgres.yml -f tests/compose-redis.yml down -v
 
+DEV_SERVER_PYTHON ?= 3.12
+DEV_SERVER_ENV = $(CURDIR)/.venvs/dev-server
+
 start-dev-server:
-	LOG_LEVEL=warning uv run langgraph dev --config tests/example_app/langgraph.json --no-browser & echo "$$!" > .devserver.pid
-	@echo "Dev server started."
+	uv sync --frozen --group test --no-dev
+	UV_PROJECT_ENVIRONMENT=$(DEV_SERVER_ENV) uv sync --frozen --group test --no-dev --python $(DEV_SERVER_PYTHON)
+	@LOG_LEVEL=warning UV_PROJECT_ENVIRONMENT=$(DEV_SERVER_ENV) uv run --no-sync --python $(DEV_SERVER_PYTHON) langgraph dev --config tests/example_app/langgraph.json --no-browser --no-reload & \
+	PID=$$!; echo "$$PID" > .devserver.pid; \
+	for ATTEMPT in $$(seq 1 60); do \
+		if ! kill -0 $$PID 2>/dev/null; then break; fi; \
+		if curl --fail --silent --max-time 1 http://localhost:2024/ok >/dev/null; then \
+			echo "Dev server ready."; exit 0; \
+		fi; \
+		sleep 1; \
+	done; \
+	echo "Dev server failed to become ready." >&2; \
+	kill $$PID 2>/dev/null || true; \
+	wait $$PID 2>/dev/null || true; \
+	rm -f .devserver.pid; exit 1
 
 stop-dev-server:
 	@if [ -f .devserver.pid ]; then \
-		kill `cat .devserver.pid` && rm .devserver.pid; \
-		 echo "Dev server stopped."; \
+		kill $$(cat .devserver.pid) 2>/dev/null || true; \
+		rm -f .devserver.pid; \
+		echo "Dev server stopped."; \
 	else \
 		echo "No dev server PID file found."; \
 	fi
@@ -60,13 +77,12 @@ NO_DOCKER ?= $(sh command -v docker >/dev/null 2>&1 && echo "false" || echo "tru
 
 test:
 	if [ "$(NO_DOCKER)" = "false" ]; then \
-		make start-services &&\
-		make start-dev-server &&\
-		uv run pytest $(TEST); \
-		EXIT_CODE=$$?; \
-		make stop-services; \
-		make stop-dev-server; \
-		exit $$EXIT_CODE; \
+		trap '$(MAKE) stop-dev-server; $(MAKE) stop-services' EXIT; \
+		trap 'exit 130' INT; trap 'exit 143' TERM; \
+		$(MAKE) start-services &&\
+		$(MAKE) start-dev-server &&\
+		uv run --no-sync pytest $(TEST); \
+		exit $$?; \
 	else \
 		NO_DOCKER=true uv run pytest $(TEST) ; \
 		EXIT_CODE=$$?; \
@@ -74,13 +90,12 @@ test:
 	fi
 
 test_parallel:
-	make start-services &&\
-	make start-dev-server &&\
-	uv run pytest -n auto --dist worksteal $(TEST) -vv --lf; \
-	EXIT_CODE=$$?; \
-	make stop-services; \
-	make stop-dev-server; \
-	exit $$EXIT_CODE
+	trap '$(MAKE) stop-dev-server; $(MAKE) stop-services' EXIT; \
+	trap 'exit 130' INT; trap 'exit 143' TERM; \
+	$(MAKE) start-services &&\
+	$(MAKE) start-dev-server &&\
+	uv run --no-sync pytest -n auto --dist worksteal $(TEST) -vv --lf; \
+	exit $$?
 
 integration_tests:
 	uv run pytest integration_tests

libs/langgraph/bench/delta-distributed.md

@@ -0,0 +1,153 @@
+# Distributed DeltaChannel benchmark
+
+The coordinator (`delta_distributed.py`) creates one disposable LangSmith sandbox
+per `(frequency, payload)` pair: 40 shards for the default 25–500 step-25 grid.
+Each shard owns a local Postgres process and grows one graph to 10000 updates,
+recording the five prefix lengths. `GenericFakeChatModel` scripts are deterministic;
+no provider API is used. Parallelism changes wall time, not total benchmark work.
+
+## Snapshot contract
+
+Supply an existing, immutable LangSmith snapshot with:
+
+- Linux, Python 3.14, git, PostgreSQL 14 binaries (`initdb`, `pg_ctl`) on PATH;
+- a checkout at `/workspace/langgraph`, pinned to the intended revision;
+- dependencies installed using `uv sync --frozen --group dev` in
+  `/workspace/langgraph/libs/langgraph`;
+- `/workspace/langgraph/libs/langgraph/.venv/bin/python` available;
+- a writable `/tmp`; a non-root user able to run Postgres, or root plus `runuser`
+  and the `postgres` OS account;
+- no Postgres listener already occupying loopback port 5432;
+- **no secrets baked into the snapshot**. Credentials are needed only by the
+  coordinator, not the shard. Use a dedicated snapshot, not a personal workspace
+  image with unrelated processes or credentials.
+
+The coordinator uploads only the benchmark source and shard worker. Libraries,
+interpreter and dependency versions come from the supplied snapshot. Every job
+uses that same snapshot ID and explicit CPU/memory/disk configuration. Snapshot
+construction/provisioning is intentionally separate; no image or paid fleet has
+been created by this change. This is a normal standalone benchmark project using
+the LangSmith SDK, not a change to the Open SWE workspace image.
+
+## Create the snapshot
+
+`delta_snapshot.py` builds the required image from the dedicated
+`delta-snapshot/Dockerfile` context. Only that Dockerfile is uploaded, never your
+working directory, `.env`, git credentials or LangSmith key. It uses Postgres
+14.7, uv 0.13.4 and Python 3.14.3, checks out a full public LangGraph commit SHA,
+and syncs the frozen dev dependencies. OS packages and version-tagged base images
+are not digest/apt-repository pinned; reuse the resulting immutable snapshot ID
+for comparable measurements rather than rebuilding between shards.
+
+From `libs/langgraph`, after checking out this PR and syncing dependencies:
+
+```bash
+uv run python bench/delta_snapshot.py \
+  --name delta-bench --output ./snapshot-plan.json
+```
+
+This dry run creates no resources. By default, the revision is local HEAD: it must
+already be pushed and reachable in the public repository. Uncommitted local code
+is **not** included. For a paid build, use a fresh receipt path:
+
+```bash
+uv run python bench/delta_snapshot.py \
+  --name delta-bench --output ./snapshot.json --execute
+```
+
+Optional flags: `--revision FULL_40_CHAR_SHA --vcpus 2 --memory-gib 8 --disk-gib 30
+--timeout 1800`. The defaults are builder sizing, not fleet concurrency. The SDK
+creates one temporary billable builder sandbox and a persistent snapshot, using
+`LANGSMITH_API_KEY`/`LANGSMITH_ENDPOINT` only on the coordinator. It cleans up the
+builder when the call exits; verify cleanup in LangSmith after a crash or failed
+build. The snapshot remains until you explicitly delete it. This command does not
+launch benchmark shards or alter an Open SWE workspace image.
+
+On success, `snapshot.json` contains `snapshot_id`, revision and build parameters:
+
+```bash
+export SNAPSHOT_ID="$(python -c 'import json; print(json.load(open("snapshot.json"))["snapshot_id"])')"
+```
+
+Then use `--snapshot-id "$SNAPSHOT_ID"` in the pilot command below. Build failures
+leave a `building` receipt: inspect LangSmith before retrying with a new name/path;
+do not assume a timeout means no snapshot or builder was created. Remote image
+build and pilot have not yet been executed; local SDK-contract tests are not a
+substitute for that end-to-end verification.
+
+## Plan first
+
+From `libs/langgraph`:
+
+```bash
+uv run python bench/delta_distributed.py \
+  --snapshot-id YOUR_SNAPSHOT_ID --concurrency 4 --timeout 14400 \
+  --vcpus 2 --memory-gib 8 --disk-gib 30 --output /tmp/delta-fleet
+```
+
+Without `--execute`, this only writes `plan.json`; it does not instantiate an SDK
+client, require credentials or provision resources. Values above are **examples,
+not selected budgets**. Agree on them before executing. With 40 shards and a
+4-hour benchmark timeout, the benchmark allowance alone is 160 sandbox-hours;
+readiness and result collection add overhead. The printed allowance is an
+estimate, not a monetary billing cap. Concurrency is capped at 40 and each shard
+benchmark timeout at 24 hours. There is no automatic retry storm.
+
+Start with a small pilot (new output directory):
+
+```bash
+uv run python bench/delta_distributed.py \
+  --snapshot-id YOUR_SNAPSHOT_ID --concurrency 2 --timeout 900 \
+  --vcpus 2 --memory-gib 8 --disk-gib 30 --output /tmp/delta-pilot \
+  --frequencies 25 300 --lengths 50 200 --profiles mock700
+```
+
+Review the generated plan, then repeat the exact command with `--execute` to
+create billable resources. The SDK reads `LANGSMITH_API_KEY` and
+`LANGSMITH_ENDPOINT` from the coordinator's environment. Never pass keys in CLI
+arguments, commit them, or bake them into the snapshot.
+
+## Lifecycle, recovery and outputs
+
+- Bounded thread-pool concurrency; each worker has its own SDK client.
+- Readiness timeout 300 seconds, benchmark subprocess timeout from the plan,
+  and remote execution timeout 120 seconds longer for startup/cleanup.
+- Completed CSV and metadata are fetched before sandbox deletion. A shard is
+  marked successful only after its sandbox has been deleted.
+- A shard's `attempt.json` records its sandbox name **before** creation. On a
+  process crash, ambiguous create or failed deletion, inspect that named resource
+  in LangSmith and delete it if it exists. Do not bulk-delete other sandboxes.
+  After verifying it is absent, set this ledger's state to `deleted` to allow
+  retry. An unresolved ledger blocks retry rather than leaking more resources.
+- Idle stop is 10 minutes and deletion after stop is 10 minutes, providing a
+  fallback for coordinator crashes. This is **not** a strict hard lifetime cap:
+  verify sandbox cleanup after interruption. Active exec/SDK lease behavior can
+  affect idle detection.
+- A shard failure stops admission of further jobs; already-running jobs finish
+  and clean up. Exceptions shown by workers use only their type, avoiding
+  inadvertent credential exposure. Failed command stdout/stderr are not copied
+  into shared artifacts. Inspect the sandbox before cleanup separately if deep
+  diagnostics are needed; automatic cleanup prioritizes preventing spend.
+- Rerun the identical plan/output directory to skip successful shards. Failed
+  shards restart from zero; partial remote CSVs are not recovered. Each completed
+  shard is an independent resume unit.
+- Launch **only one coordinator per output directory**; no cross-process lock is
+  implemented. Do not modify benchmark/worker source during a run. Source hashes
+  and plan equality reject changed-source or changed-budget resume.
+- Merge requires every expected frequency/profile/length exactly once. Missing,
+  duplicate, foreign and nonfinite rows fail validation. `combined.csv` and SVG
+  plots are emitted only for a complete plan. Per-shard CSV/metadata stay available.
+
+## Interpretation and verification limits
+
+See [measurement semantics](delta-results/README.md) before interpreting results.
+The normalized Pareto compromise is a heuristic, not a universal default. Full
+state hydration and mock payload compression can dominate the apparent tradeoff.
+Keep the end-to-end graph as the reference; direct checkpointer seeding is not
+implemented because equivalence has not been demonstrated. Read sampling remains
+one read per update to avoid treating assumed snapshot phase as measured truth.
+
+The coordinator lifecycle and failure paths are locally tested with a fake SDK;
+the benchmark itself has run against local Postgres. A real remote pilot still
+needs a prepared snapshot and an agreed concurrency/runtime budget. Do not treat
+mocked orchestration tests as evidence that a remote fleet has run successfully.

libs/langgraph/bench/delta-results/README.md

@@ -0,0 +1,124 @@
+# DeltaChannel snapshot-frequency sweep
+
+## Status and recommendation
+
+The sequential Postgres grid was stopped in favor of the distributed coordinator.
+`postgres.csv` contains four completed prefixes from frequency 25 / mock700, not a
+complete grid. No default change is justified by these partial measurements alone.
+Until the long-thread grid finishes, retain existing defaults rather than selecting a
+frequency from short threads. Frequency 300 remains a candidate for both LangGraph
+and deepagents based on the supplied fleet evidence, not a conclusion of this run.
+The capped grid does not benchmark LangGraph's current 1000 setting.
+
+`pilot.csv` contains the initial 25/300/500-frequency, 50/200-update exploratory run.
+Its first read includes initialization overhead; do not use that maximum as a steady
+state result. `scaling-pilot.csv` contains 1000-update runs at frequency 300 with
+warmup. These are explicitly partial grids. `postgres.csv` contains completed points
+from the requested full grid as it progresses; missing rows are not measurements.
+
+## Reproduce
+
+From `libs/langgraph`, sync declared dependencies with `uv sync --frozen --group dev`.
+Use a **dedicated disposable Postgres database**, not a production database. For
+example, start `postgres:14.7` with a loopback-only published port and configure
+`LANGGRAPH_BENCH_POSTGRES_URI` in the environment. The benchmark creates checkpointer
+tables and deletes only its UUID-scoped threads when each scenario finishes.
+
+```bash
+uv run python tests/test_delta_channel_benchmark.py --snapshot-sweep \
+  --backend postgres --output bench/delta-results/postgres.csv
+uv run python tests/test_delta_channel_benchmark.py --snapshot-sweep \
+  --backend memory --output bench/delta-results/memory.csv
+```
+
+Default grid: frequencies 25, 50, ..., 500; lengths 50, 200, 1000, 5000,
+10000; profiles `mock700` and `tool_calls`. Select a smoke grid with
+`--frequencies 25 300 500 --lengths 50 200`. The original multi-channel benchmark
+remains available by omitting `--snapshot-sweep`.
+
+Every frequency/profile builds one growing thread; shorter lengths are prefixes.
+Thus each backend performs 20 × 2 × 10000 = 400000 graph invocations and the
+same number of measured reads, plus warmups and separate heap measurements.
+There are 200 output rows per complete backend grid. Resume with identical
+arguments, source, revision and environment metadata: completed rows are skipped.
+An interrupted scenario is rebuilt from its beginning up to remaining lengths;
+resuming does not restore a partially written graph. Abrupt process termination
+may leave the current thread in the disposable database.
+
+## Workload and measurement semantics
+
+- Each invocation runs a deterministic `GenericFakeChatModel` script. There are
+  **no provider requests**, sleeps or stochastic outputs. Message and tool-call
+  IDs derive from the update index. Checkpoint IDs and timing vary between runs.
+- `mock700`: 350 ASCII bytes of human content plus 350 of assistant content.
+  This is **700 content bytes**, not 700 serialized bytes: message envelopes,
+  checkpoint metadata and a file update add overhead.
+- `tool_calls`: human request, scripted assistant `read_file` call, approximately
+  3.7 KB tool result, then an approximately 600-byte scripted response. It is a
+  synthetic deepagents-style workload, not captured production traffic.
+- Both `messages` and `files` receive one update in the same node per invocation.
+  Files use deterministic content lines and timestamps, adding a new report path
+  each time. This deliberately models growing file history, not overwriting a
+  fixed set of paths. The reducer merges batches of file dictionaries.
+- An update is **one graph invocation**, not one individual message. Each
+  invocation has input/start/node checkpoint supersteps; only the node writes
+  the two delta channels. The 5000-superstep bound is retained and recorded via
+  `LANGGRAPH_DELTA_MAX_SUPERSTEPS_SINCE_SNAPSHOT`; the grid does not vary it.
+- Read statistics describe one warm-cache `get_state` after **every** invocation
+  from update 1 through the reported prefix. They are not repeated final-state
+  reads or a fixed-thread-length phase distribution. This captures pre-snapshot
+  phases as well as snapshots; the maximum is the **observed** slowest read and
+  may reflect system noise, not necessarily the deepest replay chain. Its update
+  and checkpoint ID are recorded. The measured checkpoint is later deleted.
+- Write statistics time end-to-end `graph.invoke`, including hydration, scripted
+  model CPU work and checkpoint writes; they are **not saver-only SQL latency**.
+- Heap peak comes from a separate traced read of the observed slowest checkpoint.
+  `tracemalloc` is off for all latency samples. This is Python heap, not RSS or
+  database memory. Reads and writes are sequential, with no concurrent clients.
+- Memory storage counts serialized checkpoint, metadata, blob and pending-write
+  payload bytes, not Python-object/key overhead. Postgres storage is the sum of
+  `pg_column_size(row)` across checkpoints, blobs and writes scoped to the thread.
+  It is an in-row/TOAST-sensitive estimate, **not total relation/index/WAL/disk
+  usage**, and is not directly interchangeable with the memory payload count.
+  Repeated mock text is highly compressible, especially in Postgres: absolute
+  storage numbers should not be compared with production chat without matching
+  entropy, serialization and storage accounting.
+- Metadata records interpreter, platform, git revision, script SHA-256, grid and
+  sampling semantics. Initial pilot artifacts predate the final script hash and
+  warmup additions; they are preserved as exploratory evidence, not pooled with
+  the full-grid results. Timings need repeat runs to assess variance.
+
+## Charts and selecting a frequency
+
+Each CSV produces an SVG per backend/profile/length. The left panel plots storage,
+p50 and maximum read latency against frequency, independently divided by each
+metric's maximum (0–1). These normalized curves **do not have shared units**;
+their crossing is not a physical optimum. The right panel plots storage bytes
+against actual p50/max milliseconds.
+
+A marked compromise point is selected separately for p50 and max: discard
+storage/latency-dominated points, min-max normalize each objective over that group,
+and choose the nondominated point nearest the ideal origin in Euclidean distance.
+This is an equal-weight heuristic, not a universal knee or recommended default.
+Changing the candidate range, latency statistic or storage/latency weighting can
+change it. Partial groups display their actual number of frequencies and must not
+be mistaken for completed sweeps. Frequency points above a short thread's update
+count can have identical snapshot behavior, making any apparent short-thread
+optimum particularly noisy.
+
+For a final recommendation, compare the compromise points across all five thread
+lengths and both workloads, apply an explicit latency budget, inspect tail noise,
+and repeat promising frequencies. Keep separate choices for growing message and
+file workloads if their access/update patterns differ. This suite currently varies
+both cadences together and cannot identify their independent optimum.
+
+## Fleet sanity check
+
+The supplied 10000-turn fleet simulation reports frequency 50: 2.9 GB / 44 ms;
+300: 488 MB / 244 ms; 500: 307 MB / 404 ms; 1000: 164 MB / 804 ms. Its delta DB time
+was about 35 ms and about 1% of fleet DB time. These are externally supplied
+context, **not measurements reproduced here**. Our local Postgres, full graph
+hydration, files, compressible scripted content and row-size estimate differ.
+Do not calibrate the results to force a match or equate local end-to-end latency
+with fleet database time. Storage reduction with less frequent snapshots is a
+useful directional sanity check, not evidence that absolute fleet values match.

libs/langgraph/bench/delta-results/pilot-postgres-mock700-200.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / mock700 / 200 updates (n=3 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00 320.53,86.47 510.00,86.57" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,161.64 320.53,123.69 510.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00 320.53,293.43 510.00,289.76" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 500; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="1060.00,327.56 616.92,324.92 610.00,321.87" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="616.9150288807352" cy="324.91598843036314" r="5" fill="#176baf"/><text x="622.9150288807352" y="316.91598843036314" font-family="sans-serif" font-size="11">f=300</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="1060.00,80.00 616.92,293.43 610.00,289.76" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="616.9150288807352" cy="293.42895568807285" r="5" fill="#c14b14"/><text x="622.9150288807352" y="285.42895568807285" font-family="sans-serif" font-size="11">f=300</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 1062349 to 1089876; y: 0 to 197.73 ms</text></svg>

libs/langgraph/bench/delta-results/pilot-postgres-mock700-50.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / mock700 / 50 updates (n=3 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00 320.53,82.82 510.00,82.87" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,153.18 320.53,134.27 510.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00 320.53,325.79 510.00,329.51" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 500; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="1060.00,335.24 617.01,334.76 610.00,333.38" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="617.005076142132" cy="334.7610466522907" r="5" fill="#176baf"/><text x="623.005076142132" y="326.7610466522907" font-family="sans-serif" font-size="11">f=300</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="1060.00,80.00 617.01,325.79 610.00,329.51" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="329.50511620062144" r="5" fill="#c14b14"/><text x="616.0" y="321.50511620062144" font-family="sans-serif" font-size="11">f=500</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 265018 to 267973; y: 0 to 197.73 ms</text></svg>

libs/langgraph/bench/delta-results/pilot-postgres-tool_calls-200.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / tool_calls / 200 updates (n=3 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00 320.53,176.58 510.00,176.63" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,153.76 320.53,80.00 510.00,118.12" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00 320.53,171.19 510.00,179.72" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 500; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="1060.00,288.02 610.24,267.43 610.00,278.07" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="610.0" cy="278.0659453883102" r="5" fill="#176baf"/><text x="616.0" y="270.0659453883102" font-family="sans-serif" font-size="11">f=500</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="1060.00,80.00 610.24,171.19 610.00,179.72" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="179.717130949707" r="5" fill="#c14b14"/><text x="616.0" y="171.717130949707" font-family="sans-serif" font-size="11">f=500</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 1008416 to 1604911; y: 0 to 77.92 ms</text></svg>

libs/langgraph/bench/delta-results/pilot-postgres-tool_calls-50.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / tool_calls / 50 updates (n=3 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00 320.53,123.32 510.00,123.41" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,80.00 320.53,92.09 510.00,96.96" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00 320.53,124.55 510.00,172.29" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 500; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="1060.00,240.59 610.96,245.21 610.00,247.07" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="610.0" cy="247.07101749792133" r="5" fill="#176baf"/><text x="616.0" y="239.07101749792133" font-family="sans-serif" font-size="11">f=500</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="1060.00,80.00 610.96,124.55 610.00,172.29" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="172.28887735058402" r="5" fill="#c14b14"/><text x="616.0" y="164.28887735058402" font-family="sans-serif" font-size="11">f=500</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 251530 to 301946; y: 0 to 17.90 ms</text></svg>

libs/langgraph/bench/delta-results/pilot.csv

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+backend,profile,frequency,updates,read_samples,read_p50_ms,read_p95_ms,read_max_ms,slowest_update,slowest_checkpoint_id,write_p50_ms,write_p95_ms,write_max_ms,write_total_s,storage_bytes,slowest_read_peak_heap_bytes
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libs/langgraph/bench/delta-results/pilot.metadata.json

@@ -0,0 +1,25 @@
+{
+  "schema": 1,
+  "python": "3.14.3",
+  "platform": "Linux-6.1.166-x86_64-with-glibc2.43",
+  "revision": "eb066bd31a2bf01fc0cd58256df4800a3695c233",
+  "backend": "postgres",
+  "profiles": [
+    "mock700",
+    "tool_calls"
+  ],
+  "frequencies": [
+    25,
+    300,
+    500
+  ],
+  "lengths": [
+    50,
+    200
+  ],
+  "script": "deterministic, no provider; IDs follow update index",
+  "read_sampling": "one get_state after every invocation, prefix distribution",
+  "write_sampling": "end-to-end graph.invoke including hydrate, scripted model and checkpoint I/O",
+  "storage": "postgres pg_column_size row estimate (not relation disk bytes); memory serialized payloads across all stores",
+  "max_supersteps_since_snapshot": "5000"
+}

libs/langgraph/bench/delta-results/postgres-postgres-mock700-1000.svg

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libs/langgraph/bench/delta-results/postgres-postgres-mock700-200.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / mock700 / 200 updates (n=1 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 25; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="610.00,225.40" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="610.0" cy="225.39966722149467" r="5" fill="#176baf"/><text x="616.0" y="217.39966722149467" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="610.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="80.0" r="5" fill="#c14b14"/><text x="616.0" y="72.0" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 1089890 to 1089890; y: 0 to 16.54 ms</text></svg>

libs/langgraph/bench/delta-results/postgres-postgres-mock700-50.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / mock700 / 50 updates (n=1 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 25; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="610.00,184.65" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="610.0" cy="184.6472608451244" r="5" fill="#176baf"/><text x="616.0" y="176.6472608451244" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="610.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="80.0" r="5" fill="#c14b14"/><text x="616.0" y="72.0" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 267967 to 267967; y: 0 to 5.21 ms</text></svg>

libs/langgraph/bench/delta-results/postgres-postgres-mock700-5000.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="420" viewBox="0 0 1100 420"><rect width="1100" height="420" fill="white"/><text x="20" y="25" font-family="sans-serif" font-size="16">postgres / mock700 / 5000 updates (n=1 frequencies)</text><path d="M 60 60 V 340 H 510" fill="none" stroke="black"/><text x="60" y="50" font-family="sans-serif" font-size="12">Frequency vs independently normalized metrics</text><polyline points="60.00,80.00" fill="none" stroke="#176baf" stroke-width="2"/><text x="60" y="365" fill="#176baf" font-family="sans-serif" font-size="11">storage_bytes</text><polyline points="60.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><text x="60" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="60.00,80.00" fill="none" stroke="#6a378b" stroke-width="2"/><text x="60" y="395" fill="#6a378b" font-family="sans-serif" font-size="11">read_max_ms</text><text x="60" y="355" font-family="sans-serif" font-size="10">frequency: 25 to 25; y: 0 to 1.00 normalized</text><path d="M 610 60 V 340 H 1060" fill="none" stroke="black"/><text x="610" y="50" font-family="sans-serif" font-size="12">Storage vs latency (Pareto tradeoff)</text><polyline points="610.00,274.30" fill="none" stroke="#176baf" stroke-width="2"/><circle cx="610.0" cy="274.2962318424321" r="5" fill="#176baf"/><text x="616.0" y="266.2962318424321" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="365" fill="#176baf" font-family="sans-serif" font-size="11">read_p50_ms</text><polyline points="610.00,80.00" fill="none" stroke="#c14b14" stroke-width="2"/><circle cx="610.0" cy="80.0" r="5" fill="#c14b14"/><text x="616.0" y="72.0" font-family="sans-serif" font-size="11">f=25</text><text x="610" y="380" fill="#c14b14" font-family="sans-serif" font-size="11">read_max_ms</text><text x="610" y="355" font-family="sans-serif" font-size="10">storage_bytes: 39599985 to 39599985; y: 0 to 302.30 ms</text></svg>

libs/langgraph/bench/delta-results/postgres.csv

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