fix(cli): treat a malformed listener id like an unknown one

fix(cli): look up an explicit listener by id instead of searching a page
merge: main into the listener placement branch
2026-09-23 01:55:06 +02:00 · 2026-09-22 17:19:32 -04:00 · 2026-09-22 17:16:36 -04:00 · 2026-09-22 16:43:08 -04:00 · 2026-09-22 16:31:38 -04:00 · 2026-09-22 16:29:33 -04:00
38 changed files with 4212 additions and 1048 deletions
@@ -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":
@@ -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
@@ -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:
@@ -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}")

@@ -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)
@@ -13,16 +13,16 @@ wheels = [

 [[package]]
 name = "anyio"
-version = "4.13.0"
+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/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]]
@@ -26,16 +26,16 @@ 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]]
@@ -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]]
@@ -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"
 ]
@@ -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]
@@ -1,285 +0,0 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
-
-[[package]]
-name = "anyio"
-version = "4.4.0"
-description = "High level compatibility layer for multiple asynchronous event loop implementations"
-optional = false
-python-versions = ">=3.8"
-groups = ["main"]
-files = [
-    {file = "anyio-4.4.0-py3-none-any.whl", hash = "sha256:c1b2d8f46a8a812513012e1107cb0e68c17159a7a594208005a57dc776e1bdc7"},
-    {file = "anyio-4.4.0.tar.gz", hash = "sha256:5aadc6a1bbb7cdb0bede386cac5e2940f5e2ff3aa20277e991cf028e0585ce94"},
-]
-
-[package.dependencies]
-exceptiongroup = {version = ">=1.0.2", markers = "python_version < \"3.11\""}
-idna = ">=2.8"
-sniffio = ">=1.1"
-typing-extensions = {version = ">=4.1", markers = "python_version < \"3.11\""}
-
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  },
  "resolutions": {
-    "@langchain/langgraph-checkpoint": "1.0.4"
+    "@langchain/langgraph-checkpoint": "1.0.4",
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+    "@eslint/eslintrc/js-yaml": "4.3.2"
  },
  "devDependencies": {
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+js-yaml@3.15.2, js-yaml@^3.13.1:
+  version "3.15.2"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.15.2.tgz#3f83823ac6be17f570f23b2ecdef3777ff5ea364"
+  integrity sha512-6EuL879VkRA+1Cz578mKMiKvjPNEuk6+r1JaFzoSWejZmtf7xWbIyw1e3KkxlkzTIt9Taw6JBhEppG7utc1P+w==
  dependencies:
    argparse "^1.0.7"
    esprima "^4.0.0"

-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, js-yaml@^4.3.0:
+  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"

@@ -1391,9 +1391,9 @@ js-tiktoken@^1.0.12:
    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==
+  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"

@@ -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():
@@ -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]:
@@ -121,22 +265,21 @@ 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 +314,15 @@ 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]:
@@ -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}"
@@ -382,20 +382,18 @@ 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)

@@ -435,7 +433,7 @@ 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)

@@ -468,20 +466,18 @@ 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)

@@ -522,7 +518,7 @@ 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)

@@ -555,7 +551,7 @@ 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)

@@ -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
@@ -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",
+    "--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
@@ -13,6 +13,17 @@ import pytest

 import langgraph_cli.deploy as deploy_mod
 from langgraph_cli.deploy import (
+    ById,
+    ByName,
+    CustomerRegistrySource,
+    DockerBuildCommand,
+    ExistingDeployment,
+    Listener,
+    ManagedRegistrySource,
+    OnListener,
+    RemoteBuildSource,
+    RequestedPlacement,
+    Unplaced,
    _call_host_backend_with_optional_tenant,
    _create_host_backend_client,
    _docker_config_for_token,
@@ -21,12 +32,14 @@ from langgraph_cli.deploy import (
    _parse_env_from_config,
    _resolve_env_path,
    _resolve_pushed_image_digest,
-    _smith_dashboard_base_url,
+    _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:
@@ -259,31 +272,29 @@ 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 +345,6 @@ 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 +550,226 @@ 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=quiet"),
+                ),
+                id="other_hosts_cross_build_quietly",
+            ),
+            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_name": None,
+        "tag": None,
+        "remote_build_flag": None,
+        "placement": RequestedPlacement(),
+        "selector": ByName("my-app"),
+    }
+    REPOSITORY = "registry.example.com/app"
+
+    @pytest.mark.parametrize(
+        ("flags", "docker_available", "expected"),
+        [
+            pytest.param(
+                {"push_to": REPOSITORY},
+                True,
+                CustomerRegistrySource(
+                    reference=ImageReference(REPOSITORY, "latest"),
+                    prebuilt_image=None,
+                    requested_placement=RequestedPlacement(),
+                ),
+                id="push_to_selects_the_external_source_with_the_default_tag",
+            ),
+            pytest.param(
+                {"push_to": f"{REPOSITORY}:v2"},
+                True,
+                CustomerRegistrySource(
+                    reference=ImageReference(REPOSITORY, "v2"),
+                    prebuilt_image=None,
+                    requested_placement=RequestedPlacement(),
+                ),
+                id="push_to_keeps_a_tag_given_in_the_reference",
+            ),
+            pytest.param(
+                {"push_to": REPOSITORY, "tag": "v3"},
+                True,
+                CustomerRegistrySource(
+                    reference=ImageReference(REPOSITORY, "v3"),
+                    prebuilt_image=None,
+                    requested_placement=RequestedPlacement(),
+                ),
+                id="tag_flag_composes_with_push_to",
+            ),
+            pytest.param(
+                {"push_to": REPOSITORY, "image": "app:dev"},
+                False,
+                CustomerRegistrySource(
+                    reference=ImageReference(REPOSITORY, "latest"),
+                    prebuilt_image="app:dev",
+                    requested_placement=RequestedPlacement(),
+                ),
+                id="prebuilt_image_is_retagged_for_push_to_without_docker_checks",
+            ),
+            pytest.param(
+                {
+                    "push_to": REPOSITORY,
+                    "placement": RequestedPlacement("listener-1", "agents"),
+                },
+                True,
+                CustomerRegistrySource(
+                    reference=ImageReference(REPOSITORY, "latest"),
+                    prebuilt_image=None,
+                    requested_placement=RequestedPlacement("listener-1", "agents"),
+                ),
+                id="push_to_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",
+            ),
+        ],
+    )
+    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 +820,16 @@ 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 +933,289 @@ 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="--deployment-id"):
+        _select_source(
+            push_to="registry.example.com/app",
+            image=None,
+            image_name=None,
+            tag=None,
+            remote_build_flag=None,
+            placement=RequestedPlacement(listener_id="listener-1"),
+            selector=ById("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)
@@ -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)
@@ -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")
@@ -39,15 +39,15 @@ 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]]
@@ -217,9 +217,10 @@ wheels = [

 [[package]]
 name = "langchain-core"
-version = "1.3.3"
+version = "1.6.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
+    { name = "httpx" },
    { name = "jsonpatch" },
    { name = "langchain-protocol" },
    { name = "langsmith" },
@@ -230,9 +231,9 @@ dependencies = [
    { name = "typing-extensions" },
    { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/d3/ae/8b74458fc3850ec3d150eb9f45e857db129dafa801fb5cf173dfc9f8bbf3/langchain_core-1.3.3.tar.gz", hash = "sha256:fa510a5db8efdc0c6ff41c0939fb5c00a0183c11f6b84233e892e3227ff69182", size = 915041, upload-time = "2026-05-05T19:02:36.612Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/89/7b/406b4a8dd43dd01f69e04aafdee206809a2097134b2f944e12802eae7948/langchain_core-1.6.2.tar.gz", hash = "sha256:1ec6d3a98f7c8cdbb5bb0deff86e7ca37e16bf4f8f49f022d10723656c62352d", size = 1004390, upload-time = "2026-09-04T21:29:22.769Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/a8/62/d3fb7c215cb2f237c3fe84880bf347a38deafef6033b6d5f1339ba8ca401/langchain_core-1.6.2-py3-none-any.whl", hash = "sha256:21e6c7cf097c68b777fd69ea00864f09bd9ca76ac73e3e3fa14e1ee366eb4711", size = 571690, upload-time = "2026-09-04T21:29:21.175Z" },
 ]

 [[package]]
@@ -249,7 +250,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.1.6"
+version = "1.2.11"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
@@ -259,9 +260,9 @@ dependencies = [
    { name = "pydantic" },
    { name = "xxhash" },
 ]
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+sdist = { url = "https://files.pythonhosted.org/packages/56/0d/c8e7ee98896659e1b6555db0ab115a9ca899844744645d5d894032bab1d7/langgraph-1.2.11.tar.gz", hash = "sha256:9ecfe11e50d338b34b15cf4d8a442642de103e8ae6971320efba84e4542eb363", size = 725753, upload-time = "2026-08-11T14:00:36.945Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/0a/7f/c5c30e4be99ff821029c7ac872a480676bb179c9f3df85ea3f38d13f86d4/langgraph-1.2.11-py3-none-any.whl", hash = "sha256:8bab70de7b2d00b5300fb289bcf38d8b241400f3184c1e95e8ce706fb0e8686b", size = 248854, upload-time = "2026-08-11T14:00:35.494Z" },
 ]

 [[package]]
@@ -294,28 +295,31 @@ wheels = [

 [[package]]
 name = "langgraph-prebuilt"
-version = "1.0.9"
+version = "1.1.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
    { name = "langgraph-checkpoint" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/99/4c/06dac899f4945bedb0c3a1583c19484c2cc894114ea30d9a538dd270086e/langgraph_prebuilt-1.0.9.tar.gz", hash = "sha256:93de7512e9caade4b77ead92428f6215c521fdb71b8ffda8cd55f0ad814e64de", size = 165850, upload-time = "2026-04-03T14:06:37.721Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/29/66/ed9b93f56bc17ef22d551892f0ac2b225a97fe0fcf23a511b857f70d590b/langgraph_prebuilt-1.1.0.tar.gz", hash = "sha256:3c579cf6eed2d17f9c157c2d0fcaddcd8688524e7022d3b22b37a3bf4589d528", size = 178833, upload-time = "2026-05-12T03:37:49.332Z" }
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+    { url = "https://files.pythonhosted.org/packages/e9/43/3fe1a700b8490ed02679cdbbc8c915eb23a092faf496c9c1118abcd10be3/langgraph_prebuilt-1.1.0-py3-none-any.whl", hash = "sha256:51e311747d755b751d5c6b39b0c1446124d3a7643d2515017e6714b323508fc9", size = 41043, upload-time = "2026-05-12T03:37:48.007Z" },
 ]

 [[package]]
 name = "langgraph-sdk"
-version = "0.3.13"
+version = "0.4.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "httpx" },
+    { name = "langchain-core" },
+    { name = "langchain-protocol" },
    { name = "orjson" },
+    { name = "websockets" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/0e/db/77a45127dddcfea5e4256ba916182903e4c31dc4cfca305b8c386f0a9e53/langgraph_sdk-0.3.13.tar.gz", hash = "sha256:419ca5663eec3cec192ad194ac0647c0c826866b446073eb40f384f950986cd5", size = 196360, upload-time = "2026-04-07T20:34:18.766Z" }
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+    { url = "https://files.pythonhosted.org/packages/43/d5/2ad7f3a835c6fcebf58b6669552536ecd52d2dfe4cf49c6c36648fd83572/langgraph_sdk-0.4.4-py3-none-any.whl", hash = "sha256:39afe416c91742925e6f8a93715f566d499b36e1b636b804a4ffe3190e4f4e64", size = 162270, upload-time = "2026-08-27T21:25:21.072Z" },
 ]

 [[package]]
@@ -781,6 +785,105 @@ requires-dist = [
    { name = "langgraph-checkpoint-postgres", specifier = ">=3.0.0" },
 ]

+[[package]]
+name = "websockets"
+version = "16.1.1"
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+    { url = "https://files.pythonhosted.org/packages/be/4d/2d0d67834092e354d2b0498f014a41249a89556bc406cf86f3e1557bb463/websockets-16.1.1-py3-none-any.whl", hash = "sha256:6abbd3e82c731c8e531714466acd5d87b5e88ac3243465337ba71d68e23ae7e3", size = 173814, upload-time = "2026-07-17T22:51:04.184Z" },
+]
+
 [[package]]
 name = "xxhash"
 version = "3.7.0"
@@ -3,7 +3,8 @@ revision = 3
 requires-python = ">=3.10"
 resolution-markers = [
    "python_full_version >= '3.15'",
-    "python_full_version >= '3.11' and python_full_version < '3.15'",
+    "python_full_version >= '3.12' and python_full_version < '3.15' and sys_platform == 'emscripten'",
+    "(python_full_version >= '3.11' and python_full_version < '3.15' and sys_platform != 'emscripten') or (python_full_version == '3.11.*' and sys_platform == 'emscripten')",
    "python_full_version < '3.11'",
 ]

@@ -18,16 +19,16 @@ wheels = [

 [[package]]
 name = "anyio"
-version = "4.13.0"
+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/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 = [
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+    { 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]]
@@ -736,15 +737,15 @@ wheels = [

 [[package]]
 name = "httpcore2"
-version = "2.5.0"
+version = "2.12.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "h11" },
    { name = "truststore" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/47/06/5c12df521b5322fb1114a83d46911b2fbcb8855ddb3a635f11c01a214af5/httpcore2-2.5.0.tar.gz", hash = "sha256:88aa170137c17328d5ac44234f9fd10706466d5fb347f3edac4d39b91137b09d", size = 64808, upload-time = "2026-06-25T14:16:56.472Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/be/ad/f4f0e57345f1870f3e8cb624e058d7eca6e5a27d33bcc3311d9b618734cd/httpcore2-2.12.0.tar.gz", hash = "sha256:9293522bba0aa7c4c8e9e3f040c16575bd8868e155a77fa30c7a9085a5eae648", size = 67548, upload-time = "2026-08-18T13:22:08.211Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/d2/74/d370e55600d9bcfa0d9794b0166126d49291a3d2b20c268fc98c453a4948/httpcore2-2.12.0-py3-none-any.whl", hash = "sha256:7e04258ce01013d7d615e5b910a3b27fac937d7a95038227e79652b4ba3b4ceb", size = 83074, upload-time = "2026-08-18T13:22:05.854Z" },
 ]

 [[package]]
@@ -802,18 +803,28 @@ wheels = [

 [[package]]
 name = "httpx2"
-version = "2.5.0"
+version = "2.12.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "anyio" },
-    { name = "httpcore2" },
+    { name = "anyio", marker = "sys_platform != 'emscripten'" },
+    { name = "httpcore2", marker = "sys_platform != 'emscripten'" },
+    { name = "httpx2-jsfetch", marker = "python_full_version >= '3.12' and sys_platform == 'emscripten'" },
    { name = "idna" },
-    { name = "truststore" },
+    { name = "truststore", marker = "sys_platform != 'emscripten'" },
    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/d0/e2/b5dedc0cf35aa65de5f541ccd30d2bc1fd7f1d43c9ab09f8ed9a7342317b/httpx2-2.5.0.tar.gz", hash = "sha256:e2df9cb4611021527ff8a675b1c320b610a2ec397acc8d6fe6e91df2d9b33c29", size = 83121, upload-time = "2026-06-25T14:16:57.491Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/7f/f8/579a8b51e42e38ee32647df9f08aa25643ae788e275cc625b199829c4671/httpx2-2.12.0.tar.gz", hash = "sha256:7631fe9887a8a2275f4a2540e053aa670fcc50742864a9ae7c66e609fdcf12cf", size = 100040, upload-time = "2026-08-18T13:22:09.086Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/c8/95/411ba65569158e862368917aaf56597f3e5fa3b91b0502919638465a08f3/httpx2-2.12.0-py3-none-any.whl", hash = "sha256:cc8b6eecb8661c146b8f89a60e97456ee086e91a784ed31ac450c3a9e613dd36", size = 95427, upload-time = "2026-08-18T13:22:06.834Z" },
+]
+
+[[package]]
+name = "httpx2-jsfetch"
+version = "1.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/cd/c4/0e5636363151a2a1795e0a77617168b9ca438e1748ec05fc9b5687f93d64/httpx2_jsfetch-1.0.tar.gz", hash = "sha256:70a0e3eabfef7cce5ad9c629f7d01ca05e418f586646f4ddf14782e4c1454c60", size = 6872, upload-time = "2026-08-07T00:13:07.492Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/9b/43/832f631d32e4f1211caa2ba368317739fe71f0b8530e4c9d15dc454bac2a/httpx2_jsfetch-1.0-py3-none-any.whl", hash = "sha256:cb916b707601e69a07721aabc8f3f6659be3a6893bc1ff5c6f9e02241df2da32", size = 6382, upload-time = "2026-08-07T00:13:06.567Z" },
 ]

 [[package]]
@@ -12,15 +12,23 @@ from typing import (
    Generic,
    Literal,
    NamedTuple,
-    TypeVar,
    final,
+    overload,
 )
 from warnings import warn

 from langchain_core.messages import AnyMessage
 from langchain_core.runnables import Runnable, RunnableConfig
 from langgraph.checkpoint.base import BaseCheckpointSaver, CheckpointMetadata
-from typing_extensions import NotRequired, TypeAliasType, TypedDict, Unpack, deprecated
+from pydantic import TypeAdapter
+from typing_extensions import (
+    NotRequired,
+    TypeAliasType,
+    TypedDict,
+    TypeVar,
+    Unpack,
+    deprecated,
+)
 from xxhash import xxh3_128_hexdigest

 from langgraph._internal._cache import default_cache_key
@@ -36,6 +44,7 @@ from langgraph.warnings import LangGraphDeprecatedSinceV10, LangGraphDeprecatedS
 # when used in standalone type aliases.
 StateT = TypeVar("StateT")
 OutputT = TypeVar("OutputT")
+ResponseT = TypeVar("ResponseT", default=Any)

 if TYPE_CHECKING:
    from langgraph.pregel.protocol import PregelProtocol
@@ -572,7 +581,7 @@ _DEFAULT_INTERRUPT_ID = "placeholder-id"

@final
@dataclass(init=False, slots=True)
-class Interrupt:
+class Interrupt(Generic[ResponseT]):
    """Information about an interrupt that occurred in a node.

    !!! version-added "Added in version 0.2.24"
@@ -596,13 +605,22 @@ class Interrupt:
    id: str
    """The ID of the interrupt. Can be used to resume the interrupt directly."""

+    response_schema: type[ResponseT] | dict[str, Any] | None = None
+    """Schema for the value expected when resuming this interrupt, if the graph provided one.
+
+    A surfaced interrupt carries JSON Schema (a `dict`); `type[ResponseT]` records the
+    Python type at construction so `Interrupt[Decision]` is meaningful to type checkers."""
+
    def __init__(
        self,
        value: Any,
        id: str = _DEFAULT_INTERRUPT_ID,
+        *,
+        response_schema: type[ResponseT] | dict[str, Any] | None = None,
        **deprecated_kwargs: Unpack[DeprecatedKwargs],
    ) -> None:
        self.value = value
+        self.response_schema = response_schema

        if (
            (ns := deprecated_kwargs.get("ns", MISSING)) is not MISSING
@@ -614,8 +632,18 @@ class Interrupt:
            self.id = id

    @classmethod
-    def from_ns(cls, value: Any, ns: str) -> Interrupt:
-        return cls(value=value, id=xxh3_128_hexdigest(ns.encode()))
+    def from_ns(
+        cls,
+        value: Any,
+        ns: str,
+        *,
+        response_schema: type[ResponseT] | dict[str, Any] | None = None,
+    ) -> Interrupt[ResponseT]:
+        return cls(
+            value=value,
+            id=xxh3_128_hexdigest(ns.encode()),
+            response_schema=response_schema,
+        )

    @property
    @deprecated("`interrupt_id` is deprecated. Use `id` instead.", category=None)
@@ -848,7 +876,17 @@ class Command(Generic[N], ToolOutputMixin):
    PARENT: ClassVar[Literal["__parent__"]] = "__parent__"


-def interrupt(value: Any) -> Any:
+@overload
+def interrupt(value: Any, *, response_schema: type[ResponseT]) -> ResponseT: ...
+
+
+@overload
+def interrupt(value: Any, *, response_schema: dict[str, Any] | None = None) -> Any: ...
+
+
+def interrupt(
+    value: Any, *, response_schema: dict[str, Any] | type | None = None
+) -> Any:
    """Interrupt the graph with a resumable exception from within a node.

    The `interrupt` function enables human-in-the-loop workflows by pausing graph
@@ -918,7 +956,7 @@ def interrupt(value: Any) -> Any:
        for chunk in graph.stream({\"foo\": \"abc\"}, config):
            print(chunk)

-        # > {'__interrupt__': (Interrupt(value='what is your age?', id='45fda8478b2ef754419799e10992af06'),)}
+        # > {'__interrupt__': (Interrupt(value='what is your age?', id='45fda8478b2ef754419799e10992af06', response_schema=None),)}

        command = Command(resume=\"some input from a human!!!\")

@@ -931,12 +969,20 @@ def interrupt(value: Any) -> Any:

    Args:
        value: The value to surface to the client when the graph is interrupted.
+        response_schema: Optional schema for the value expected on resume, surfaced
+            to clients so they can render a typed input form. Accepts a JSON Schema
+            `dict` (used as-is, resume values are not validated), or a Pydantic model
+            class, `TypedDict`, or dataclass, which are converted to JSON Schema for
+            clients and used to validate the resume value; the validated object is
+            what `interrupt` returns.

    Returns:
-        Any: On subsequent invocations within the same node (same task to be precise), returns the value provided during the first invocation
+        Any: On subsequent invocations within the same node (same task to be precise), returns the value provided during the first invocation,
+            validated against `response_schema` when one that supports validation was given.

    Raises:
        GraphInterrupt: On the first invocation within the node, halts execution and surfaces the provided value to the client.
+        pydantic.ValidationError: When a resume value does not match a Pydantic model, `TypedDict`, or dataclass `response_schema`.
    """
    from langgraph._internal._constants import (
        CONFIG_KEY_CHECKPOINT_NS,
@@ -948,27 +994,36 @@ def interrupt(value: Any) -> Any:
    from langgraph.errors import GraphInterrupt

    conf = get_config()["configurable"]
+    adapter = (
+        None
+        if response_schema is None or isinstance(response_schema, dict)
+        else TypeAdapter(response_schema)
+    )
    # track interrupt index
    scratchpad = conf[CONFIG_KEY_SCRATCHPAD]
    idx = scratchpad.interrupt_counter()
    # find previous resume values
    if scratchpad.resume:
        if idx < len(scratchpad.resume):
-            conf[CONFIG_KEY_SEND]([(RESUME, scratchpad.resume)])
-            return scratchpad.resume[idx]
+            v = scratchpad.resume[idx]
+            validated = adapter.validate_python(v) if adapter else v
+            conf[CONFIG_KEY_SEND]([(RESUME, scratchpad.resume[: idx + 1])])
+            return validated
    # find current resume value
    v = scratchpad.get_null_resume(True)
    if v is not None:
        assert len(scratchpad.resume) == idx, (scratchpad.resume, idx)
+        validated = adapter.validate_python(v) if adapter else v
        scratchpad.resume.append(v)
        conf[CONFIG_KEY_SEND]([(RESUME, scratchpad.resume)])
-        return v
+        return validated
    # no resume value found
    raise GraphInterrupt(
        (
            Interrupt.from_ns(
                value=value,
                ns=conf[CONFIG_KEY_CHECKPOINT_NS],
+                response_schema=adapter.json_schema() if adapter else response_schema,
            ),
        )
    )
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"

 [project]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.12"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
@@ -1,9 +1,14 @@
+from dataclasses import dataclass
+from typing import Any
+
 import pytest
 from langgraph.checkpoint.base import BaseCheckpointSaver
+from pydantic import BaseModel, ValidationError
 from typing_extensions import TypedDict

 from langgraph.graph import END, START, StateGraph
-from langgraph.types import Durability
+from langgraph.types import Command, Durability, Interrupt, interrupt
+from tests.any_str import AnyStr

 pytestmark = pytest.mark.anyio

@@ -90,3 +95,150 @@ async def test_interruption_without_state_updates_async(
    assert (await graph.aget_state(thread)).next == ()
    n_checkpoints = len([c async for c in graph.aget_state_history(thread)])
    assert n_checkpoints == (5 if durability != "exit" else 3)
+
+
+class Decision(BaseModel):
+    approved: bool
+    note: str | None = None
+
+
+class DecisionDict(TypedDict):
+    approved: bool
+
+
+@dataclass
+class DecisionData:
+    approved: bool
+
+
+RAW_SCHEMA = {"type": "object", "properties": {"approved": {"type": "boolean"}}}
+
+
+@pytest.mark.parametrize(
+    ("response_schema", "expected_schema", "expected_answer"),
+    [
+        (None, None, {"approved": True, "extra": 1}),
+        (RAW_SCHEMA, RAW_SCHEMA, {"approved": True, "extra": 1}),
+        (Decision, Decision.model_json_schema(), Decision(approved=True)),
+        (
+            DecisionDict,
+            {
+                "properties": {"approved": {"title": "Approved", "type": "boolean"}},
+                "required": ["approved"],
+                "title": "DecisionDict",
+                "type": "object",
+            },
+            {"approved": True},
+        ),
+        (
+            DecisionData,
+            {
+                "properties": {"approved": {"title": "Approved", "type": "boolean"}},
+                "required": ["approved"],
+                "title": "DecisionData",
+                "type": "object",
+            },
+            DecisionData(approved=True),
+        ),
+    ],
+    ids=["none", "raw_dict", "pydantic", "typeddict", "dataclass"],
+)
+def test_interrupt_response_schema(
+    sync_checkpointer: BaseCheckpointSaver,
+    response_schema: Any,
+    expected_schema: dict[str, Any] | None,
+    expected_answer: Any,
+) -> None:
+    class State(TypedDict):
+        answer: Any
+
+    def node(state: State) -> State:
+        return {
+            "answer": interrupt(
+                {"question": "approve?"}, response_schema=response_schema
+            )
+        }
+
+    graph = (
+        StateGraph(State)
+        .add_node("node", node)
+        .add_edge(START, "node")
+        .compile(checkpointer=sync_checkpointer)
+    )
+    config = {"configurable": {"thread_id": "1"}}
+    expected = Interrupt(
+        value={"question": "approve?"}, id=AnyStr(), response_schema=expected_schema
+    )
+
+    assert list(graph.stream({"answer": None}, config)) == [
+        {"__interrupt__": (expected,)}
+    ]
+    assert graph.get_state(config).tasks[0].interrupts == (expected,)
+    assert graph.invoke(Command(resume={"approved": True, "extra": 1}), config) == {
+        "answer": expected_answer
+    }
+
+
+@pytest.mark.parametrize("resume_style", ["null", "map"])
+def test_interrupt_response_schema_rejects_invalid_resume(
+    sync_checkpointer: BaseCheckpointSaver, resume_style: str
+) -> None:
+    class State(TypedDict):
+        answer: Any
+
+    def node(state: State) -> State:
+        return {"answer": interrupt("approve?", response_schema=Decision)}
+
+    graph = (
+        StateGraph(State)
+        .add_node("node", node)
+        .add_edge(START, "node")
+        .compile(checkpointer=sync_checkpointer)
+    )
+    config = {"configurable": {"thread_id": "1"}}
+    graph.invoke({"answer": None}, config)
+    [pending] = graph.get_state(config).tasks[0].interrupts
+
+    def resume(value: dict[str, Any]) -> Command:
+        return Command(resume=value if resume_style == "null" else {pending.id: value})
+
+    with pytest.raises(ValidationError, match="approved"):
+        graph.invoke(resume({"approved": "nope"}), config)
+
+    assert graph.invoke(resume({"approved": False}), config) == {
+        "answer": Decision(approved=False)
+    }
+
+
+@pytest.mark.parametrize("resume_style", ["null", "id_map"])
+def test_interrupt_response_schema_invalid_resume_after_earlier_interrupt(
+    sync_checkpointer: BaseCheckpointSaver, resume_style: str
+) -> None:
+    class State(TypedDict):
+        answer: Any
+
+    def node(state: State) -> State:
+        first = interrupt("first")
+        second = interrupt("approve?", response_schema=Decision)
+        return {"answer": [first, second]}
+
+    graph = (
+        StateGraph(State)
+        .add_node("node", node)
+        .add_edge(START, "node")
+        .compile(checkpointer=sync_checkpointer)
+    )
+    config = {"configurable": {"thread_id": "1"}}
+    graph.invoke({"answer": None}, config)
+    graph.invoke(Command(resume="ok"), config)
+    [pending] = graph.get_state(config).tasks[0].interrupts
+
+    def resume(value: dict[str, Any]) -> Command:
+        return Command(resume=value if resume_style == "null" else {pending.id: value})
+
+    with pytest.raises(ValidationError, match="approved"):
+        graph.invoke(resume({"approved": "nope"}), config)
+
+    assert graph.invoke(resume({"approved": True}), config) == {
+        "answer": ["ok", Decision(approved=True)]
+    }
@@ -5583,6 +5583,7 @@ def test_falsy_return_from_task(sync_checkpointer: BaseCheckpointSaver):
                "interrupts": [
                    {
                        "id": AnyStr(),
+                        "response_schema": None,
                        "value": "test",
                    },
                ],
@@ -5627,6 +5628,7 @@ def test_falsy_return_from_task(sync_checkpointer: BaseCheckpointSaver):
                        "interrupts": (
                            {
                                "id": AnyStr(),
+                                "response_schema": None,
                                "value": "test",
                            },
                        ),
@@ -1437,7 +1437,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.12"
 source = { editable = "." }
 dependencies = [
    { name = "langchain-core" },
@@ -3404,11 +3404,11 @@ wheels = [

 [[package]]
 name = "soupsieve"
-version = "2.8.4"
+version = "2.9"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/47/2c/0a5f6f8ee0d5589e48c7640213ed5175d52cf540a06725b628cc1a45d6ce/soupsieve-2.8.4.tar.gz", hash = "sha256:e121fd02e975c695e4e9e8774a5ee35d74714b59307868dcc5319ad2d9e3328e", size = 121110, upload-time = "2026-05-24T13:55:57.154Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/80/f1/93422647dd7e461f23d254e6b2bfa687a85b53aeb4903fcdbb74474d4584/soupsieve-2.9.tar.gz", hash = "sha256:acee8417325c5653e1377dc31eccad59eb82cbc65942afe6174c53b3aaad63fc", size = 122122, upload-time = "2026-07-19T01:35:18.425Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/5e/f5/0c41cb68dcae6b7de4fac4188a3a9589e21fb31df21ea3a2e888db95e6c9/soupsieve-2.8.4-py3-none-any.whl", hash = "sha256:e7e6b0769c8f51ed59acab6e994b00621096cfb1c640a7509295987388fbaf65", size = 37304, upload-time = "2026-05-24T13:55:55.406Z" },
+    { url = "https://files.pythonhosted.org/packages/7b/d6/3185ab5ad1280319b31986898f3206dd7227cd75e293d4dba2a5e6bf27a0/soupsieve-2.9-py3-none-any.whl", hash = "sha256:a2b2c76d67df2382d245409fd71e321a571717e58463efa32ace87dcadac2c12", size = 37387, upload-time = "2026-07-19T01:35:17.106Z" },
 ]

 [[package]]
@@ -286,7 +286,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.12"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -3,7 +3,7 @@ from langgraph_sdk.client import get_client, get_sync_client
 from langgraph_sdk.encryption import Encryption
 from langgraph_sdk.encryption.types import DecryptResult, EncryptionContext

-__version__ = "0.4.4"
+__version__ = "0.4.5"

 __all__ = [
    "Auth",
@@ -295,6 +295,8 @@ class Interrupt(TypedDict):
    """The value associated with the interrupt."""
    id: str
    """The ID of the interrupt. Can be used to resume the interrupt."""
+    response_schema: NotRequired[dict[str, Any]]
+    """JSON Schema for the value expected when resuming this interrupt, if the graph provided one."""


 class Thread(TypedDict):
@@ -29,7 +29,10 @@ def test_sync_extension_projection_yields_matching_custom_payloads():
        {"name": "progress", "step": 1},
        {"name": "progress", "step": 2},
    ]
-    assert "custom:progress" in fake.stream_request_bodies[-1]["channels"]
+    assert any(
+        "custom:progress" in body.get("channels", [])
+        for body in fake.stream_request_bodies
+    )


 def test_sync_extension_projection_supports_namespace_scope_on_subgraph_handle():
@@ -17,16 +17,16 @@ wheels = [

 [[package]]
 name = "anyio"
-version = "4.12.1"
+version = "4.15.1"
 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'" },
+    { 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/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/a9/d2/f4d173e22df740bc37b1db102b386ba719b66e95b0f0d751f556b387e6d2/anyio-4.15.1.tar.gz", hash = "sha256:9f28306018cbd6d329e64a36d58256edff76dd996fe423bc957326e578b82a94", size = 276966, upload-time = "2026-09-05T10:42:39.44Z" }
 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/12/b8/4bd346e22b28902df4d651910f5242c28d84e4a5c2435ca5c3f797ed7e2e/anyio-4.15.1-py3-none-any.whl", hash = "sha256:6152fdbbf9a77fdec97731721bebf7c4c44f7c29b424b0065826173efc7ed101", size = 132079, upload-time = "2026-09-05T10:42:37.923Z" },
 ]

 [[package]]
@@ -181,7 +181,7 @@ name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" } },
 ]
 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 = [
@@ -277,7 +277,8 @@ 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'" },
    { name = "uuid-utils" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/90/12/aff76ca89c219ebe6f9dd3c5dbc4e3b1cf5450e9fc7037dccad23d45cd7a/langchain_core-1.6.1.tar.gz", hash = "sha256:1b156cb395aac4f009a8a1b38a574c7d948fe2d5f74c96e0d8a5017b4149e04f", size = 1003359, upload-time = "2026-08-27T19:31:14.956Z" }
@@ -290,7 +291,8 @@ name = "langchain-protocol"
 version = "0.0.19"
 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/14/56/913599f2f9cec8524868929f12d72b2ede377a6056ca8a40a32bdadfa535/langchain_protocol-0.0.19.tar.gz", hash = "sha256:79d90a1425122ac87e8052e2ec054fbd09c3edbf341bdfb6397112a495c7bf8c", size = 6265, upload-time = "2026-08-26T21:12:00.703Z" }
 wheels = [
@@ -299,7 +301,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.12"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -726,7 +728,8 @@ source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "annotated-types" },
    { name = "pydantic-core" },
-    { 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'" },
    { name = "typing-inspection" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/53/ef/fc4f868f4e2cee79f863883abffceff107875f569b848507319842d2a681/pydantic-2.13.5.tar.gz", hash = "sha256:51a9c5f7b2f8e636f04c6cada605d9b6a3bf1348fdf945a3d8869b19bba0ee08", size = 845750, upload-time = "2026-08-28T14:04:00.916Z" }
@@ -739,7 +742,8 @@ name = "pydantic-core"
 version = "2.46.5"
 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/af/f9/8a06bea35ef8daf588f707784c973a7046e0034c8d8cfb08828eeffb8b75/pydantic_core-2.46.5.tar.gz", hash = "sha256:10416c15b8839ecc4ef4d0885da76da6fd0f67333a0eb8aff6d93c4b8f2910fc", size = 472262, upload-time = "2026-08-28T10:01:31.677Z" }
 wheels = [
@@ -884,7 +888,7 @@ source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "backports-asyncio-runner", marker = "python_full_version < '3.11'" },
    { name = "pytest" },
-    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.13'" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/43/7c/d36d04db312ecf4298932ef77e6e4a9e8ad017906e24e34f0b0c361a2473/pytest_asyncio-1.4.0.tar.gz", hash = "sha256:c6c0d2259945122819f171a32ecea2c349ead889ee28176caaf492143424be42", size = 58514, upload-time = "2026-05-26T09:56:04.083Z" }
 wheels = [
@@ -1037,7 +1041,7 @@ version = "1.6.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "anyio" },
-    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+    { name = "typing-extensions", version = "4.16.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.13'" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/b5/b4/205b0d5241d934e8add0c38aa924c4f9fb7330834ff11e5444db964ec3f9/starlette-1.6.0.tar.gz", hash = "sha256:d4e3ac5e546444960c710297a3c9fc3f7ebae1b7e963f3d36173b49da535be9b", size = 2716969, upload-time = "2026-08-08T18:27:57.512Z" }
 wheels = [
@@ -1136,17 +1140,33 @@ wheels = [
 name = "typing-extensions"
 version = "4.15.0"
 source = { registry = "https://pypi.org/simple" }
+resolution-markers = [
+    "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" }
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+[[package]]
+name = "typing-extensions"
+version = "4.16.0"
+source = { registry = "https://pypi.org/simple" }
+resolution-markers = [
+    "python_full_version < '3.15'",
+]
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+wheels = [
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+
 [[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'" },
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