sdk-py: add per-run context to thread stream run.start and run.respond

Add optional keyword-only `context` to `run.start` and `run.respond`
on both AsyncThreadStream and SyncThreadStream. The context is sent as
`params.context` on the `run.start` / `input.respond` commands when
non-None and omitted entirely otherwise, preserving the existing wire
payload for callers that don't pass it.

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

.github/scripts/run_langgraph_cli_test.py

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

.github/workflows/_integration_test.yml

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

.github/workflows/deploy-redirects.yml

@@ -7,6 +7,10 @@ on:
     paths:
       - 'docs/**'
       - '.github/workflows/deploy-redirects.yml'
+  # llms.txt is fetched from docs.langchain.com at build time, so redeploy on a
+  # schedule to pick up docs changes that never touch this repo.
+  schedule:
+    - cron: '17 6 * * 1'
   workflow_dispatch:
 
 permissions:

docs/generate_redirects.py

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

docs/llms.txt

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

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

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

libs/cli/examples/graph_prerelease_reqs/pyproject.toml

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

libs/cli/js-examples/package.json

@@ -25,7 +25,9 @@
     "@langchain/langgraph": "^1.4.13"
   },
   "resolutions": {
-    "@langchain/langgraph-checkpoint": "1.0.4"
+    "@langchain/langgraph-checkpoint": "1.0.4",
+    "jest/**/js-yaml": "3.15.2",
+    "@eslint/eslintrc/js-yaml": "4.3.2"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3.3.6",

libs/cli/js-examples/yarn.lock

@@ -3744,18 +3744,18 @@ js-tokens@^4.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.13.1:
-  version "3.14.2"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.2.tgz#77485ce1dd7f33c061fd1b16ecea23b55fcb04b0"
-  integrity sha512-PMSmkqxr106Xa156c2M265Z+FTrPl+oxd/rgOQy2tijQeK5TxQ43psO1ZCwhVOSdnn+RzkzlRz/eY4BgJBYVpg==
+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"
 

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

@@ -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"
 

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

@@ -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 = [
-    { url = "https://files.pythonhosted.org/packages/1f/01/4771b7ab2af1d1aba5b710bd8f13d9225c609425214b357590a17b01be77/langchain_core-1.3.3-py3-none-any.whl", hash = "sha256:18aae8506f37da7f74398492279a7d6efcee4f8e23c4c41c7af080eeb7ef7bd1", size = 543857, upload-time = "2026-05-05T19:02:34.52Z" },
+    { 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" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/5c/e5/d3f72ead3c7f15769d5a9c07e373628f1fbaf6cbe7735694d7085859acf6/langgraph-1.1.6.tar.gz", hash = "sha256:1783f764b08a607e9f288dbcf6da61caeb0dd40b337e5c9fb8b412341fbc0b60", size = 549634, upload-time = "2026-04-03T19:01:32.561Z" }
+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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+]
+
 [[package]]
 name = "xxhash"
 version = "3.7.0"

libs/cli/uv.lock

@@ -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'",
 ]
 
@@ -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'" },
 ]
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+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" }
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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]]

libs/langgraph/langgraph/types.py

@@ -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,
             ),
         )
     )

libs/langgraph/tests/test_interruption.py

@@ -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)]
+    }

libs/langgraph/tests/test_pregel.py

@@ -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",
                             },
                         ),

libs/langgraph/uv.lock

@@ -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]]

libs/sdk-py/langgraph_sdk/_async/stream.py

@@ -173,8 +173,18 @@ class RunModule:
         config: dict[str, Any] | None = None,
         metadata: dict[str, Any] | None = None,
         langsmith_tracing: LangSmithTracing | None = None,
+        context: dict[str, Any] | None = None,
     ) -> dict[str, Any]:
-        """Send `run.start` to the server. Returns the result (`{"run_id": ...}`)."""
+        """Send `run.start` to the server. Returns the result (`{"run_id": ...}`).
+
+        Args:
+            input: the run input; omitted from the wire payload when None.
+            config: the run config; omitted when None.
+            metadata: run metadata; omitted when None.
+            langsmith_tracing: tracing options; omitted when None.
+            context: per-run static context; omitted from the wire payload
+                when None (server applies its default context behavior).
+        """
         params: dict[str, Any] = {"assistant_id": self._owner.assistant_id}
         if input is not None:
             params["input"] = input
@@ -184,6 +194,8 @@ class RunModule:
             params["metadata"] = metadata
         if langsmith_tracing is not None:
             params["langsmith_tracer"] = langsmith_tracing
+        if context is not None:
+            params["context"] = context
         loop = asyncio.get_running_loop()
         gate: asyncio.Future[None] = loop.create_future()
         self._owner._run_start_ready = gate
@@ -216,6 +228,7 @@ class RunModule:
         response: Any,
         *,
         interrupt_id: str | None = None,
+        context: dict[str, Any] | None = None,
     ) -> dict[str, Any]:
         """Reply to a server-side interrupt and resume the run.
 
@@ -224,6 +237,8 @@ class RunModule:
                 wire (protocol field name).
             interrupt_id: optional explicit id. When omitted, requires exactly
                 one outstanding interrupt and uses its id.
+            context: optional per-run static context for the resumed run;
+                forwarded with the `input.respond` command when non-None.
 
         Raises:
             RuntimeError: no outstanding interrupts; `interrupt_id` is None but
@@ -266,6 +281,8 @@ class RunModule:
                 "namespace": match["namespace"],
                 "response": response,
             }
+            if context is not None:
+                params["context"] = context
             return await self._owner._send_command("input.respond", params)
 
 

libs/sdk-py/langgraph_sdk/_sync/stream.py

@@ -216,8 +216,18 @@ class SyncRunModule:
         config: dict[str, Any] | None = None,
         metadata: dict[str, Any] | None = None,
         langsmith_tracing: LangSmithTracing | None = None,
+        context: dict[str, Any] | None = None,
     ) -> dict[str, Any]:
-        """Send `run.start` to the server. Returns the result (`{"run_id": ...}`)."""
+        """Send `run.start` to the server. Returns the result (`{"run_id": ...}`).
+
+        Args:
+            input: the run input; omitted from the wire payload when None.
+            config: the run config; omitted when None.
+            metadata: run metadata; omitted when None.
+            langsmith_tracing: tracing options; omitted when None.
+            context: per-run static context; omitted from the wire payload
+                when None (server applies its default context behavior).
+        """
         params: dict[str, Any] = {"assistant_id": self._owner.assistant_id}
         if input is not None:
             params["input"] = input
@@ -227,6 +237,8 @@ class SyncRunModule:
             params["metadata"] = metadata
         if langsmith_tracing is not None:
             params["langsmith_tracer"] = langsmith_tracing
+        if context is not None:
+            params["context"] = context
         result = self._owner._send_command("run.start", params)
         self._owner._run_seen = True
         controller = self._owner._controller
@@ -239,6 +251,7 @@ class SyncRunModule:
         response: Any,
         *,
         interrupt_id: str | None = None,
+        context: dict[str, Any] | None = None,
     ) -> dict[str, Any]:
         """Reply to a server-side interrupt and resume the run.
 
@@ -246,6 +259,8 @@ class SyncRunModule:
             response: the response value forwarded as `params.response` on the wire.
             interrupt_id: optional explicit id. When omitted, requires exactly one
                 outstanding interrupt.
+            context: optional per-run static context for the resumed run;
+                forwarded with the `input.respond` command when non-None.
 
         Raises:
             RuntimeError: no outstanding interrupts; `interrupt_id` is None but
@@ -282,6 +297,8 @@ class SyncRunModule:
             "namespace": match["namespace"],
             "response": response,
         }
+        if context is not None:
+            params["context"] = context
         return self._owner._send_command("input.respond", params)
 
 

libs/sdk-py/langgraph_sdk/auth/types.py

@@ -218,8 +218,6 @@ class BaseUser(typing.Protocol):
 class StudioUser:
     """A user object that's populated from authenticated requests from the LangGraph studio.
 
-    `ls_user_id` is the canonical LangSmith user ID when supplied by Agent Server.
-
     Note: Studio auth can be disabled in your `langgraph.json` config.
 
     ```json
@@ -252,11 +250,10 @@ class StudioUser:
         ```
     """
 
-    __slots__ = ("_is_authenticated", "_permissions", "ls_user_id", "username")
+    __slots__ = ("_is_authenticated", "_permissions", "username")
 
     def __init__(self, username: str, is_authenticated: bool = False) -> None:
         self.username = username
-        self.ls_user_id: str | None = None
         self._is_authenticated = is_authenticated
         self._permissions = ["authenticated"] if is_authenticated else []
 

libs/sdk-py/langgraph_sdk/schema.py

@@ -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):

libs/sdk-py/tests/streaming/test_sync_thread_stream.py

@@ -439,6 +439,64 @@ def test_sync_run_start_sends_command():
     }
 
 
+def test_sync_run_start_forwards_context():
+    fake = SyncFakeServer()
+    fake.script([lifecycle_completed_event(seq=1)])
+    with httpx.Client(transport=fake.transport, base_url="http://test") as raw:
+        threads = SyncThreadsClient(SyncHttpClient(raw))
+        with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            thread.run.start(input={"x": 1}, context={"user_id": "u-1"})
+
+    assert fake.received_commands[0]["params"]["context"] == {"user_id": "u-1"}
+
+
+def test_sync_run_start_omits_context_when_not_provided():
+    fake = SyncFakeServer()
+    fake.script([lifecycle_completed_event(seq=1)])
+    with httpx.Client(transport=fake.transport, base_url="http://test") as raw:
+        threads = SyncThreadsClient(SyncHttpClient(raw))
+        with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            thread.run.start(input={"x": 1})
+
+    assert "context" not in fake.received_commands[0]["params"]
+
+
+def test_sync_run_respond_forwards_context():
+    fake = SyncFakeServer()
+    fake.script([lifecycle_completed_event(seq=1)])
+    with httpx.Client(transport=fake.transport, base_url="http://test") as raw:
+        threads = SyncThreadsClient(SyncHttpClient(raw))
+        with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            thread.run.start(input={})
+            thread.interrupts.append(
+                {"interrupt_id": "i-1", "value": None, "namespace": []}
+            )
+            thread.interrupted = True
+            thread.run.respond("yes", context={"user_id": "u-1"})
+
+    command = fake.received_commands[-1]
+    assert command["method"] == "input.respond"
+    assert command["params"]["context"] == {"user_id": "u-1"}
+
+
+def test_sync_run_respond_omits_context_when_not_provided():
+    fake = SyncFakeServer()
+    fake.script([lifecycle_completed_event(seq=1)])
+    with httpx.Client(transport=fake.transport, base_url="http://test") as raw:
+        threads = SyncThreadsClient(SyncHttpClient(raw))
+        with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            thread.run.start(input={})
+            thread.interrupts.append(
+                {"interrupt_id": "i-1", "value": None, "namespace": []}
+            )
+            thread.interrupted = True
+            thread.run.respond("yes")
+
+    command = fake.received_commands[-1]
+    assert command["method"] == "input.respond"
+    assert "context" not in command["params"]
+
+
 def test_sync_events_iterates_raw_events():
 
     fake = SyncFakeServer()

libs/sdk-py/tests/streaming/test_thread_stream.py

@@ -311,6 +311,28 @@ async def test_run_start_forwards_config_metadata_and_langsmith_tracing():
     }
 
 
+async def test_run_start_forwards_context():
+    fake = FakeServer()
+    transport = httpx.ASGITransport(app=fake.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as raw:
+        threads = ThreadsClient(HttpClient(raw))
+        async with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            await thread.run.start(input={"x": 1}, context={"user_id": "u-1"})
+    params = fake.received_commands[0]["params"]
+    assert params["context"] == {"user_id": "u-1"}
+
+
+async def test_run_start_omits_context_when_not_provided():
+    fake = FakeServer()
+    transport = httpx.ASGITransport(app=fake.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as raw:
+        threads = ThreadsClient(HttpClient(raw))
+        async with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            await thread.run.start(input={"x": 1})
+    params = fake.received_commands[0]["params"]
+    assert "context" not in params
+
+
 async def test_run_start_raises_outside_context_manager():
 
     async with httpx.AsyncClient(base_url="http://test") as raw:
@@ -616,6 +638,38 @@ async def test_run_respond_dispatches_input_respond_command():
     assert command["params"]["namespace"] == []
 
 
+async def test_run_respond_forwards_context():
+    fake = FakeServer()
+    asgi = httpx.ASGITransport(app=fake.app)
+    async with httpx.AsyncClient(transport=asgi, base_url="http://test") as raw:
+        threads = ThreadsClient(HttpClient(raw))
+        async with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            await thread.run.start(input={})
+            thread.interrupts.append(
+                {"interrupt_id": "i-1", "value": None, "namespace": []}
+            )
+            thread.interrupted = True
+            await thread.run.respond("yes", context={"user_id": "u-1"})
+    params = fake.received_commands[-1]["params"]
+    assert params["context"] == {"user_id": "u-1"}
+
+
+async def test_run_respond_omits_context_when_not_provided():
+    fake = FakeServer()
+    asgi = httpx.ASGITransport(app=fake.app)
+    async with httpx.AsyncClient(transport=asgi, base_url="http://test") as raw:
+        threads = ThreadsClient(HttpClient(raw))
+        async with threads.stream(thread_id="t-1", assistant_id="agent") as thread:
+            await thread.run.start(input={})
+            thread.interrupts.append(
+                {"interrupt_id": "i-1", "value": None, "namespace": []}
+            )
+            thread.interrupted = True
+            await thread.run.respond("yes")
+    params = fake.received_commands[-1]["params"]
+    assert "context" not in params
+
+
 async def test_run_respond_with_explicit_interrupt_id():
     fake = FakeServer()
     asgi = httpx.ASGITransport(app=fake.app)

libs/sdk-py/tests/test_auth.py

@@ -1,22 +1,8 @@
 import pytest
-from typing_extensions import assert_type
 
 from langgraph_sdk import Auth
 
 
-def test_studio_user_langsmith_id() -> None:
-    def langsmith_id(user: object) -> str | None:
-        if isinstance(user, Auth.types.StudioUser):
-            return assert_type(user.ls_user_id, str | None)
-        return None
-
-    user = Auth.types.StudioUser("login-user", is_authenticated=True)
-    assert langsmith_id(user) is None
-    user.ls_user_id = "langsmith-user"
-    assert langsmith_id(user) == "langsmith-user"
-    assert user.identity == "login-user"
-
-
 def test_handler_multiple_resources_and_actions() -> None:
     auth = Auth()