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Author SHA1 Message Date
Sydney Runkle ed648f87bf update pydantic in lockfile 2025-05-12 07:49:30 -04:00
292 changed files with 30399 additions and 30327 deletions
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@@ -0,0 +1,88 @@
# An action for setting up poetry install with caching.
# Using a custom action since the default action does not
# take poetry install groups into account.
# Action code from:
# https://github.com/actions/setup-python/issues/505#issuecomment-1273013236
name: poetry-install-with-caching
description: Poetry install with support for caching of dependency groups.
inputs:
python-version:
description: Python version, supporting MAJOR.MINOR only
required: true
poetry-version:
description: Poetry version
required: true
cache-key:
description: Cache key to use for manual handling of caching
required: true
runs:
using: composite
steps:
- uses: actions/setup-python@v5
name: Setup python ${{ inputs.python-version }}
id: setup-python
with:
python-version: ${{ inputs.python-version }}
- uses: actions/cache@v3
id: cache-bin-poetry
name: Cache Poetry binary - Python ${{ inputs.python-version }}
env:
SEGMENT_DOWNLOAD_TIMEOUT_MIN: "1"
with:
path: |
/opt/pipx/venvs/poetry
# This step caches the poetry installation, so make sure it's keyed on the poetry version as well.
key: bin-poetry-${{ runner.os }}-${{ runner.arch }}-py-${{ inputs.python-version }}-${{ inputs.poetry-version }}
- name: Refresh shell hashtable and fixup softlinks
if: steps.cache-bin-poetry.outputs.cache-hit == 'true'
shell: bash
env:
POETRY_VERSION: ${{ inputs.poetry-version }}
PYTHON_VERSION: ${{ inputs.python-version }}
run: |
set -eux
# Refresh the shell hashtable, to ensure correct `which` output.
hash -r
# `actions/cache@v3` doesn't always seem able to correctly unpack softlinks.
# Delete and recreate the softlinks pipx expects to have.
rm /opt/pipx/venvs/poetry/bin/python
cd /opt/pipx/venvs/poetry/bin
ln -s "$(which "python$PYTHON_VERSION")" python
chmod +x python
cd /opt/pipx_bin/
ln -s /opt/pipx/venvs/poetry/bin/poetry poetry
chmod +x poetry
# Ensure everything got set up correctly.
/opt/pipx/venvs/poetry/bin/python --version
/opt/pipx_bin/poetry --version
- name: Install poetry
if: steps.cache-bin-poetry.outputs.cache-hit != 'true'
shell: bash
env:
POETRY_VERSION: ${{ inputs.poetry-version }}
PYTHON_VERSION: ${{ inputs.python-version }}
# Install poetry using the python version installed by setup-python step.
run: pipx install "poetry==$POETRY_VERSION" --python '${{ steps.setup-python.outputs.python-path }}' --verbose
- name: Restore pip and poetry cached dependencies
uses: actions/cache@v3
env:
SEGMENT_DOWNLOAD_TIMEOUT_MIN: "4"
with:
path: |
~/.cache/pip
~/.cache/pypoetry/virtualenvs
~/.cache/pypoetry/cache
~/.cache/pypoetry/artifacts
./.venv
key: py-deps-${{ runner.os }}-${{ runner.arch }}-py-${{ inputs.python-version }}-poetry-${{ inputs.poetry-version }}-${{ inputs.cache-key }}-${{ hashFiles('./poetry.lock') }}
+7 -5
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@@ -3,6 +3,9 @@ name: CLI integration test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -22,14 +25,13 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
filter: "libs/cli/**"
- name: Set up Python ${{ matrix.python-version }}
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
if: steps.changed-files.outputs.all
uses: astral-sh/setup-uv@v6
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
enable-cache: true
cache-suffix: "cli-integration-test"
ignore-nothing-to-cache: true
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: integration-test-cli
- name: Setup env
if: steps.changed-files.outputs.all
working-directory: libs/cli/examples
+33 -8
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@@ -9,6 +9,8 @@ on:
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
# This env var allows us to get inline annotations when ruff has complaints.
RUFF_OUTPUT_FORMAT: github
@@ -34,18 +36,32 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
filter: "${{ inputs.working-directory }}/**"
- name: Set up Python ${{ matrix.python-version }}
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
if: steps.changed-files.outputs.all
uses: astral-sh/setup-uv@v6
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
enable-cache: true
cache-suffix: lint-${{ inputs.working-directory }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: lint-${{ inputs.working-directory }}
- name: Check Poetry File
if: steps.changed-files.outputs.all
shell: bash
working-directory: ${{ inputs.working-directory }}
run: poetry check
- name: Install dependencies
if: steps.changed-files.outputs.all
# Also installs dev/lint/test/typing dependencies, to ensure we have
# type hints for as many of our libraries as possible.
# This helps catch errors that require dependencies to be spotted, for example:
# https://github.com/langchain-ai/langchain/pull/10249/files#diff-935185cd488d015f026dcd9e19616ff62863e8cde8c0bee70318d3ccbca98341
#
# If you change this configuration, make sure to change the `cache-key`
# in the `poetry_setup` action above to stop using the old cache.
# It doesn't matter how you change it, any change will cause a cache-bust.
working-directory: ${{ inputs.working-directory }}
run: uv sync --frozen --group dev
run: poetry install --with dev
- name: Get .mypy_cache to speed up mypy
if: steps.changed-files.outputs.all
@@ -55,7 +71,7 @@ jobs:
with:
path: |
${{ inputs.working-directory }}/.mypy_cache
key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/poetry.lock', inputs.working-directory)) }}
- name: Analysing package code with our lint
if: steps.changed-files.outputs.all
@@ -70,8 +86,17 @@ jobs:
- name: Install test dependencies
if: steps.changed-files.outputs.all
# Also installs dev/lint/test/typing dependencies, to ensure we have
# type hints for as many of our libraries as possible.
# This helps catch errors that require dependencies to be spotted, for example:
# https://github.com/langchain-ai/langchain/pull/10249/files#diff-935185cd488d015f026dcd9e19616ff62863e8cde8c0bee70318d3ccbca98341
#
# If you change this configuration, make sure to change the `cache-key`
# in the `poetry_setup` action above to stop using the old cache.
# It doesn't matter how you change it, any change will cause a cache-bust.
working-directory: ${{ inputs.working-directory }}
run: uv sync --group dev
run: |
poetry install --with dev
- name: Get .mypy_cache_test to speed up mypy
if: steps.changed-files.outputs.all
@@ -81,7 +106,7 @@ jobs:
with:
path: |
${{ inputs.working-directory }}/.mypy_cache_test
key: mypy-test-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
key: mypy-test-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/poetry.lock', inputs.working-directory)) }}
- name: Analysing tests with our lint
if: steps.changed-files.outputs.all
+11 -6
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@@ -8,6 +8,9 @@ on:
type: string
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -23,12 +26,12 @@ jobs:
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
enable-cache: true
cache-suffix: test-${{ inputs.working-directory }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: test-${{ inputs.working-directory }}
- name: Login to Docker Hub
uses: docker/login-action@v3
if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -39,12 +42,14 @@ jobs:
- name: Install dependencies
shell: bash
working-directory: ${{ inputs.working-directory }}
run: uv sync --frozen --group dev
run: |
poetry install --with dev
- name: Run tests
shell: bash
working-directory: ${{ inputs.working-directory }}
run: make test
run: |
make test
- name: Ensure the tests did not create any additional files
shell: bash
+11 -6
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@@ -3,6 +3,9 @@ name: test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -21,12 +24,12 @@ jobs:
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
enable-cache: true
cache-suffix: "test-langgraph"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: test-langgraph
- name: Login to Docker Hub
uses: docker/login-action@v3
if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -36,11 +39,13 @@ jobs:
- name: Install dependencies
shell: bash
run: uv sync --frozen --group dev
run: |
poetry install --with dev
- name: Run tests
shell: bash
run: make test_parallel
run: |
make test_parallel
- name: Ensure the tests did not create any additional files
shell: bash
+8 -7
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@@ -9,6 +9,7 @@ on:
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
PYTHON_VERSION: "3.10"
jobs:
@@ -23,12 +24,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python $${ env.PYTHON_VERSION }}
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ env.PYTHON_VERSION }}
enable-cache: true
cache-suffix: "release"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
# We want to keep this build stage *separate* from the release stage,
# so that there's no sharing of permissions between them.
@@ -42,7 +43,7 @@ jobs:
# > from the publish job.
# https://github.com/pypa/gh-action-pypi-publish#non-goals
- name: Build project for distribution
run: uv build
run: poetry build
working-directory: ${{ inputs.working-directory }}
- name: Upload build
@@ -56,8 +57,8 @@ jobs:
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
echo pkg-name=$(grep -m 1 "^name = " pyproject.toml | cut -d '"' -f 2)
echo version=$(grep -m 1 "^version = " pyproject.toml | cut -d '"' -f 2)
echo pkg-name="$(poetry version | cut -d ' ' -f 1)" >> $GITHUB_OUTPUT
echo version="$(poetry version --short)" >> $GITHUB_OUTPUT
publish:
needs:
+11 -6
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@@ -3,6 +3,9 @@ name: test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -18,12 +21,12 @@ jobs:
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
enable-cache: true
cache-suffix: "test-scheduler-kafka"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: test-scheduler-kafka
- name: Login to Docker Hub
uses: docker/login-action@v3
if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -33,11 +36,13 @@ jobs:
- name: Install dependencies
shell: bash
run: uv sync --frozen --group dev
run: |
poetry install --with dev
- name: Run tests
shell: bash
run: make test
run: |
make test
- name: Ensure the tests did not create any additional files
shell: bash
+8 -5
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@@ -7,6 +7,9 @@ on:
paths:
- "libs/**"
env:
POETRY_VERSION: "2.1.2"
jobs:
benchmark:
runs-on: ubuntu-latest
@@ -16,14 +19,14 @@ jobs:
steps:
- uses: actions/checkout@v4
- run: SHA=$(git rev-parse HEAD) && echo "SHA=$SHA" >> $GITHUB_ENV
- name: Set up Python 3.11
uses: astral-sh/setup-uv@v6
- name: Set up Python 3.11 + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: "3.11"
enable-cache: true
cache-suffix: "bench"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: bench
- name: Install dependencies
run: uv sync --group dev
run: poetry install --with dev
- name: Run benchmarks
run: OUTPUT=out/benchmark-baseline.json make -s benchmark
- name: Save outputs
+9 -6
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@@ -5,6 +5,9 @@ on:
paths:
- "libs/**"
env:
POETRY_VERSION: "2.1.2"
jobs:
benchmark:
runs-on: ubuntu-latest
@@ -18,14 +21,14 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
format: json
- name: Set up Python 3.11
uses: astral-sh/setup-uv@v6
- name: Set up Python 3.11 + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: "3.11"
enable-cache: true
cache-suffix: "bench"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: bench
- name: Install dependencies
run: uv sync --group dev
run: poetry install --with dev
- name: Download baseline
uses: actions/cache/restore@v4
with:
@@ -50,7 +53,7 @@ jobs:
echo 'OUTPUT<<EOF'
mv out/benchmark-baseline.json out/main.json
mv out/benchmark.json out/changes.json
uv run pyperf compare_to out/main.json out/changes.json --table --group-by-speed
poetry run pyperf compare_to out/main.json out/changes.json --table --group-by-speed
echo EOF
} >> "$GITHUB_OUTPUT"
- name: Annotation
+10 -7
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@@ -16,6 +16,9 @@ concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
env:
POETRY_VERSION: "2.1.2"
jobs:
changes:
runs-on: ubuntu-latest
@@ -122,26 +125,26 @@ jobs:
- "3.11"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: "3.11"
enable-cache: true
cache-suffix: "schema-check-cli"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: schema-check-cli
- name: Install CLI dependencies
run: |
cd libs/cli
uv sync
poetry install
- name: Generate schema and check for changes
run: |
cd libs/cli
# Create a temporary copy of the current schema
cp schemas/schema.json schemas/schema.current.json
# Generate new schema
uv run python generate_schema.py
poetry run python generate_schema.py
# Compare the new schema with the original
if ! diff -q schemas/schema.json schemas/schema.current.json > /dev/null; then
echo "Error: Langgraph.json configuration schema has changed. Please run 'uv run python generate_schema.py' in the libs/cli directory and commit the changes."
echo "Error: Langgraph.json configuration schema has changed. Please run 'poetry run python generate_schema.py' in the libs/cli directory and commit the changes."
diff schemas/schema.json schemas/schema.current.json
exit 1
fi
+11 -8
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@@ -9,6 +9,9 @@ on:
- main
workflow_dispatch:
env:
POETRY_VERSION: "2.1.2"
permissions:
contents: read
pages: write
@@ -54,21 +57,21 @@ jobs:
with:
fetch-depth: 0
- name: Set up Python
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: "3.12"
enable-cache: true
cache-suffix: "docs"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: docs
- name: Install dependencies
run: |
yarn
uv sync --all-groups
poetry install --with test --with docs --no-root
# we run this installation only for internal PRs
# as GITHUB_TOKEN is not available for PRs from outside contributors
if [ -n "${GITHUB_TOKEN}" ]; then
uv run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
poetry run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
fi
- name: Run unit tests
@@ -100,7 +103,7 @@ jobs:
run: |
if [ "${{ github.event_name }}" == "schedule" ]; then
echo "Running link check on all HTML files matching notebooks in docs directory..."
uv run pytest -v \
poetry run pytest -v \
--check-links-ignore "https://(api|web|docs)\.smith\.langchain\.com/.*" \
--check-links-ignore "https://academy\.langchain\.com/.*" \
--check-links-ignore "https://x.com/.*" \
@@ -125,7 +128,7 @@ jobs:
echo "Changed files: ${CHANGED_FILES}"
if [ -n "${CHANGED_FILES}" ]; then
echo "Running link check on HTML files matching changed notebook files..."
uv run pytest -v \
poetry run pytest -v \
--check-links-ignore "https://(api|web|docs)\.smith\.langchain\.com/.*" \
--check-links-ignore "https://academy\.langchain\.com/.*" \
--check-links-ignore "http://localhost:8123/.*" \
+3
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@@ -11,6 +11,9 @@ on:
- cron: "0 5 * * *"
workflow_dispatch:
env:
POETRY_VERSION: "2.1.2"
jobs:
markdown-link-check:
runs-on: ubuntu-latest
+25 -24
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@@ -10,6 +10,7 @@ on:
env:
PYTHON_VERSION: "3.11"
POETRY_VERSION: "2.1.2"
jobs:
build:
@@ -25,12 +26,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ env.PYTHON_VERSION }}
enable-cache: true
cache-suffix: "release"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
# We want to keep this build stage *separate* from the release stage,
# so that there's no sharing of permissions between them.
@@ -44,7 +45,7 @@ jobs:
# > from the publish job.
# https://github.com/pypa/gh-action-pypi-publish#non-goals
- name: Build project for distribution
run: uv build
run: poetry build
working-directory: ${{ inputs.working-directory }}
- name: Upload build
@@ -58,8 +59,8 @@ jobs:
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
PKG_NAME=$(grep -m 1 "^name = " pyproject.toml | cut -d '"' -f 2)
VERSION=$(grep -m 1 "^version = " pyproject.toml | cut -d '"' -f 2)
PKG_NAME="$(poetry version | cut -d ' ' -f 1)"
VERSION="$(poetry version --short)"
SHORT_PKG_NAME="$(echo "$PKG_NAME" | sed -e 's/langgraph//g' -e 's/-//g')"
if [ -z $SHORT_PKG_NAME ]; then
TAG="$VERSION"
@@ -162,11 +163,11 @@ jobs:
# - The package is published, and it breaks on the missing dependency when
# used in the real world.
- name: Set up Python
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ env.PYTHON_VERSION }}
enable-cache: true
poetry-version: ${{ env.POETRY_VERSION }}
- name: Import published package
shell: bash
@@ -184,18 +185,18 @@ jobs:
# - attempt install again after 5 seconds if it fails because there is
# sometimes a delay in availability on test pypi
run: |
uv run pip install \
poetry run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION" || \
( \
sleep 5 && \
uv run pip install \
poetry run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION" \
)
if [[ "$PKG_NAME" == *prebuilt* ]]; then
uv run pip install langgraph
poetry run pip install langgraph
fi
if [[ "$PKG_NAME" == *checkpoint* || "$PKG_NAME" == *prebuilt* ]]; then
@@ -208,10 +209,10 @@ jobs:
IMPORT_NAME="$(echo "$PKG_NAME" | sed s/-/_/g)"
fi
uv run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
poetry run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
- name: Import test dependencies
run: uv sync --group dev
run: poetry install --with dev
working-directory: ${{ inputs.working-directory }}
# Overwrite the local version of the package with the test PyPI version.
@@ -222,7 +223,7 @@ jobs:
PKG_NAME: ${{ needs.build.outputs.pkg-name }}
VERSION: ${{ needs.build.outputs.version }}
run: |
uv run pip install \
poetry run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION"
@@ -252,12 +253,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ env.PYTHON_VERSION }}
enable-cache: true
cache-suffix: "release"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
- uses: actions/download-artifact@v4
with:
@@ -293,12 +294,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python
uses: astral-sh/setup-uv@v6
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ env.PYTHON_VERSION }}
enable-cache: true
cache-suffix: "release"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
- uses: actions/download-artifact@v4
with:
+9 -9
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@@ -27,30 +27,30 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry
uses: astral-sh/setup-uv@v6
uses: "./.github/actions/poetry_setup"
with:
python-version: "3.11"
enable-cache: true
cache-suffix: "test-langgraph-notebooks"
python-version: 3.11
poetry-version: 2.1.2
cache-key: test-langgraph-notebooks
- name: Install dependencies
run: |
uv sync --group test
uv run pip install jupyter
poetry install --with test --no-root
poetry run pip install jupyter
- name: Start services
run: make start-services
- name: Pre-download tiktoken files
run: |
uv run python _scripts/download_tiktoken.py
poetry run python _scripts/download_tiktoken.py
- name: Prepare notebooks
run: |
if [ "${{ matrix.lib-version }}" = "development" ]; then
uv run python _scripts/prepare_notebooks_for_ci.py --comment-install-cells
poetry run python _scripts/prepare_notebooks_for_ci.py --comment-install-cells
else
uv run python _scripts/prepare_notebooks_for_ci.py
poetry run python _scripts/prepare_notebooks_for_ci.py
fi
- name: Run notebooks
+1 -2
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@@ -153,7 +153,7 @@ Each category serves a distinct purpose and requires a specific approach to writ
Here are some other guidelines you should think about when writing and organizing documentation.
We generally do not merge new tutorials from outside contributors without an actual need.
We generally do not merge new tutorials from outside contributors without an actue need.
We welcome updates as well as new integration docs, how-tos, and references.
### Avoid duplication
@@ -227,7 +227,6 @@ see a preview of the documentation on the pull request page.
From the **monorepo root**, run the following command to install the dependencies:
<!-- TODO -->
```bash
poetry install --with docs --no-root
```
+3 -4
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@@ -12,9 +12,8 @@
[![Downloads](https://static.pepy.tech/badge/langgraph/month)](https://pepy.tech/project/langgraph)
[![Open Issues](https://img.shields.io/github/issues-raw/langchain-ai/langgraph)](https://github.com/langchain-ai/langgraph/issues)
[![Docs](https://img.shields.io/badge/docs-latest-blue)](https://langchain-ai.github.io/langgraph/)
[![GitMCP](https://img.shields.io/endpoint?url=https://gitmcp.io/badge/langchain-ai/langgraph)](https://gitmcp.io/langchain-ai/langgraph)
Trusted by companies shaping the future of agents – including Klarna, Replit, Elastic, and more – LangGraph is a low-level orchestration framework for building, managing, and deploying long-running, stateful agents.
Trusted by companies shaping the future of agents – including Klarna, Replit, Elastic, and more – LangGraph is a powerful low-level orchestration framework for building, managing, and deploying long-running, stateful agents.
## Get started
@@ -77,8 +76,8 @@ While LangGraph can be used standalone, it also integrates seamlessly with any L
- [Examples](https://langchain-ai.github.io/langgraph/tutorials/): Guided examples on getting started with LangGraph.
- [LangChain Academy](https://academy.langchain.com/courses/intro-to-langgraph): Learn the basics of LangGraph in our free, structured course.
- [Templates](https://langchain-ai.github.io/langgraph/concepts/template_applications/): Pre-built reference apps for common agentic workflows (e.g. ReAct agent, memory, retrieval etc.) that can be cloned and adapted.
- [Case studies](https://www.langchain.com/built-with-langgraph): Hear how industry leaders use LangGraph to ship AI applications at scale.
- [Case studies](https://www.langchain.com/built-with-langgraph): Hear how industry leaders use LangGraph to ship powerful, production-ready AI applications.
## Acknowledgements
LangGraph is inspired by [Pregel](https://research.google/pubs/pub37252/) and [Apache Beam](https://beam.apache.org/). The public interface draws inspiration from [NetworkX](https://networkx.org/documentation/latest/). LangGraph is built by LangChain Inc, the creators of LangChain, but can be used without LangChain.
LangGraph is inspired by [Pregel](https://research.google/pubs/pub37252/) and [Apache Beam](https://beam.apache.org/). The public interface draws inspiration from [NetworkX](https://networkx.org/documentation/latest/). LangGraph is built by LangChain Inc, the creators of LangChain, but can be used without LangChain.
+18 -16
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@@ -12,30 +12,32 @@ build-prebuilt:
# generates the final prebuilt page.
@if [ "$(DOWNLOAD_STATS)" = "true" ]; then \
set -x; \
uv run python -m _scripts.third_party_page.get_download_stats stats.yml; \
poetry run python -m _scripts.third_party_page.get_download_stats stats.yml; \
set +x; \
else \
set -x; \
uv run python -m _scripts.third_party_page.get_download_stats --fake stats.yml; \
poetry run python -m _scripts.third_party_page.get_download_stats --fake stats.yml; \
set +x; \
fi
uv run python -m _scripts.third_party_page.create_third_party_page stats.yml docs/agents/prebuilt.md --language python
poetry run python -m _scripts.third_party_page.create_third_party_page stats.yml docs/agents/prebuilt.md --language python
build-docs: build-typedoc build-prebuilt
uv run python -m mkdocs build --clean -f mkdocs.yml --strict
poetry run python -m mkdocs build --clean -f mkdocs.yml --strict
llms-text:
uv run python -m _scripts.generate_llms_text docs/llms-full.txt
poetry run python -m _scripts.generate_llms_text docs/llms-full.txt
install-vercel-deps:
curl -sL "https://astral.sh/uv/install.sh" | bash -s
export PATH="${HOME}/.cargo/bin:${PATH}"
uv venv --python 3.11
uv sync --all-groups
dnf install -y python3.11
curl -sSL https://install.python-poetry.org | python3 -
poetry self update 1.8.5
# don't use vercel's python - it wasn't compiled with sqlite support, and it fails when installing ipython's kernel
poetry env use /usr/bin/python3.11
poetry install --with docs --with test --no-root
tests:
# Run unit tests
uv run pytest tests/unit_tests
poetry run pytest tests/unit_tests
vercel-build-docs: install-vercel-deps
@@ -43,10 +45,10 @@ vercel-build-docs: install-vercel-deps
serve-clean-docs: clean-docs
uv run python -m mkdocs serve -c -f mkdocs.yml --strict -w ../libs/langgraph
poetry run python -m mkdocs serve -c -f mkdocs.yml --strict -w ../libs/langgraph
serve-docs: build-typedoc
uv run python -m mkdocs serve -f mkdocs.yml -w ../libs/langgraph -w ../libs/checkpoint -w ../libs/sdk-py --dirty
poetry run python -m mkdocs serve -f mkdocs.yml -w ../libs/langgraph -w ../libs/checkpoint -w ../libs/sdk-py --dirty
clean-docs:
find ./docs -name "*.ipynb" -type f -delete
@@ -54,13 +56,13 @@ clean-docs:
## Run format against the project documentation.
format-docs:
uv run ruff format docs
uv run ruff check --fix docs
poetry run ruff format docs
poetry run ruff check --fix docs
# Check the docs for linting violations
lint-docs:
uv run ruff format --check docs
uv run ruff check docs
poetry run ruff format --check docs
poetry run ruff check docs
codespell:
./codespell_notebooks.sh .
+1 -1
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@@ -3,7 +3,7 @@
To setup requirements for building docs you can run:
```bash
uv sync --group test
poetry install --with test
```
## Serving documentation locally
+1 -1
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@@ -8,7 +8,7 @@ execute_notebook() {
file="$1"
echo "Starting execution of $file"
start_time=$(date +%s)
if ! output=$(time uv run jupyter execute "$file" 2>&1); then
if ! output=$(time poetry run jupyter execute "$file" 2>&1); then
end_time=$(date +%s)
execution_time=$((end_time - start_time))
echo "Error in $file. Execution time: $execution_time seconds"
+26 -238
View File
@@ -1,19 +1,10 @@
"""Experimental script to generate consolidated llms text from the docs."""
import asyncio
import glob
import os
from typing import TypedDict, List, Optional
import pydantic
import re
from pydantic import BaseModel, Field
from langchain_core.rate_limiters import InMemoryRateLimiter
import yaml
from langchain.chat_models import init_chat_model
from mkdocs.structure.files import File
from mkdocs.structure.pages import Page
from yaml import SafeLoader
from _scripts.notebook_hooks import _on_page_markdown_with_config
@@ -22,49 +13,7 @@ HERE = os.path.dirname(os.path.abspath(__file__))
SOURCE_DIR = os.path.abspath(os.path.join(os.path.dirname(HERE), "docs"))
async def convert_ipynb_to_md(file_path: str) -> Optional[str]:
"""Process a file (markdown or notebook) to markdown format.
Args:
file_path: Path to the file to process
Returns:
Processed markdown content if successful, None otherwise
"""
rel_path = os.path.relpath(file_path, SOURCE_DIR)
# Create File and Page objects to match mkdocs structure
file_obj = File(
path=rel_path, src_dir=SOURCE_DIR, dest_dir="", use_directory_urls=True
)
page = Page(
title="",
file=file_obj,
config={},
)
try:
# Read raw content
with open(file_path, "r", encoding="utf-8") as f:
content = f.read()
# Convert to markdown without logic to resolve API references
processed_content = _on_page_markdown_with_config(
content, page, add_api_references=False, remove_base64_images=True
)
# Remove self-closing img tags <img ... />
processed_content = re.sub(r"<img[^>]*/>", "", processed_content)
# Remove img tags with content <img ...>...</img>
processed_content = re.sub(
r"<img[^>]*>.*?</img>", "", processed_content, flags=re.DOTALL
)
return processed_content
except Exception as e:
print(f"Error processing file {file_path}: {e}")
return None
async def generate_full_llms_text(output_file: str) -> None:
def _make_llms_text(output_file: str) -> str:
"""Generate a consolidated text file from markdown/notebook files for LLM training.
Args:
@@ -72,9 +21,11 @@ async def generate_full_llms_text(output_file: str) -> None:
"""
# Collect all markdown and notebook files
all_files = glob.glob(os.path.join(SOURCE_DIR, "how-tos/*.md"), recursive=True)
all_files.extend(
glob.glob(os.path.join(SOURCE_DIR, "how-tos/*.ipynb"), recursive=True)
)
# Add all concepts
all_files.extend(
glob.glob(os.path.join(SOURCE_DIR, "concepts/*.md"), recursive=True)
)
@@ -84,14 +35,30 @@ async def generate_full_llms_text(output_file: str) -> None:
all_content = []
# Process files concurrently
tasks = [convert_ipynb_to_md(file_path) for file_path in all_files]
results = await asyncio.gather(*tasks)
# Process each file
for file_path in all_files:
print(f"Processing {file_path}")
rel_path = os.path.relpath(file_path, SOURCE_DIR)
# Combine results with file paths
for file_path, processed_content in zip(all_files, results):
# Create File and Page objects to match mkdocs structure
file_obj = File(
path=rel_path, src_dir=SOURCE_DIR, dest_dir="", use_directory_urls=True
)
page = Page(
title="",
file=file_obj,
config={},
)
# Read raw content
with open(file_path, "r", encoding="utf-8") as f:
content = f.read()
# Convert to markdown without logic to resolve API references
processed_content = _on_page_markdown_with_config(
content, page, add_api_references=False, remove_base64_images=True
)
if processed_content:
rel_path = os.path.relpath(file_path, SOURCE_DIR)
# Add file name
all_content.append(f"---\n{rel_path}\n---")
# Add content
@@ -102,168 +69,6 @@ async def generate_full_llms_text(output_file: str) -> None:
f.write("\n\n".join(all_content))
def no_op_constructor(*args):
"""No-op"""
SafeLoader.add_multi_constructor(
"tag:yaml.org,2002:python/name",
no_op_constructor,
)
class NavItem(TypedDict):
title: str
url: str
hierarchy: tuple[str, ...]
description: str
def _flatten_nav(
nav: list[dict[str, str | list] | str], path: tuple[str, ...] = ()
) -> list[NavItem]:
flat: List[NavItem] = []
for item in nav:
if isinstance(item, dict):
for title, node in item.items():
new_path = path + (title,)
if isinstance(node, str):
# Leaf page
flat.append(
{
"title": title,
"url": node,
"hierarchy": new_path,
"description": "",
}
)
elif isinstance(node, list):
# Dive in, carrying along the updated path
flat.extend(_flatten_nav(node, new_path))
else:
raise TypeError(
f"Unexpected node type {type(node)} under {title!r}"
)
elif isinstance(item, str):
# Bare string entry → use itself as title, and as URL
new_path = path + (item,)
flat.append(
{"title": item, "url": item, "hierarchy": new_path, "description": ""}
)
else:
raise TypeError(f"Unexpected item type {type(item)} in nav")
return flat
class PageInfo(BaseModel):
title: str = Field(description="The title of the page")
description: str = Field(
description="A short description of the page no longer than 3 sentences "
"explaining the kind of content that can be found in the page."
)
async def process_nav_items(nav_items: list[NavItem]) -> list[NavItem]:
"""Open the contents of each nav item and come up with a better title and description."""
rate_limiter = InMemoryRateLimiter(requests_per_second=10)
model = init_chat_model("gpt-4o-mini", temperature=0.0, rate_limiter=rate_limiter)
model = model.with_structured_output(PageInfo)
async def process_single_item(item: NavItem) -> NavItem:
path = item["url"]
file_path = os.path.join(SOURCE_DIR, path)
# Process the file content (handles both markdown and notebooks)
if path.endswith(".ipynb"):
content = await convert_ipynb_to_md(file_path)
else:
with open(file_path, "r", encoding="utf-8") as f:
content = f.read()
if not content:
return item
# Generate a better title and description
response = await model.ainvoke(
[
{
"role": "system",
"content": "You are a technical documentation writer. "
"You are given a markdown page of documentation. "
"Please come up with an appropriate title and "
"description for the page. The description should "
"be a short summary of the page content that is "
"no longer than 3 sentences.",
},
{
"role": "user",
"content": "The markdown page is as follows:\n\n" + content,
},
]
)
return {
"title": response.title,
"url": item["url"],
"hierarchy": item["hierarchy"],
"description": response.description,
}
# Remove any items that start with http:// or https:// looking only for
# local file at this stages.
nav_items = [
item for item in nav_items if not item["url"].startswith(("http://", "https://"))
]
# Process items in parallel
tasks = [process_single_item(item) for item in nav_items]
new_nav_items = await asyncio.gather(*tasks)
return new_nav_items
async def generate_nav_links_text(
output_file: str, *, replace_links: bool = False
) -> None:
"""Generate llms.txt from mkdocs.yaml."""
# Get path to mkdocs.yaml relative to this script
script_dir = os.path.dirname(os.path.abspath(__file__))
mkdocs_path = os.path.join(os.path.dirname(script_dir), "mkdocs.yml")
# Load and parse yaml
with open(mkdocs_path, "r") as f:
config = yaml.safe_load(f)
# Extract nav section
nav = config.get("nav", [])
flattened = _flatten_nav(nav)
processed_nav = await process_nav_items(flattened)
with open(output_file, "w") as f:
current_section = None
for item in processed_nav:
# Get the top-level section (first item in hierarchy)
section = item["hierarchy"][0]
if section not in {"Guides", "Examples", "Resources"}:
continue
# If we're starting a new section, add a heading
if section != current_section:
f.write(f"\n# {section}\n\n")
current_section = section
title = item["title"]
# Process URL based on replace_links flag
url = item["url"]
if replace_links:
# Remove .md extension and ensure single trailing slash
url = url.removesuffix(".md")
url = url.removesuffix(".ipynb")
url = url.rstrip("/") + "/"
url = f"https://langchain-ai.github.io/langgraph/{url}"
f.write(f"- [{title}]({url}): {item['description']}\n")
if __name__ == "__main__":
import argparse
@@ -273,23 +78,6 @@ if __name__ == "__main__":
)
)
parser.add_argument("output_file", help="Path to output the consolidated text file")
parser.add_argument(
"--link-only",
action="store_true",
help="Only include link references in the output",
)
parser.add_argument(
"--replace-links",
action="store_true",
help="Replace markdown links with full URLs in the output",
)
args = parser.parse_args()
if args.link_only:
coro = generate_nav_links_text(
args.output_file, replace_links=args.replace_links
)
else:
coro = generate_full_llms_text(args.output_file)
asyncio.run(coro)
_make_llms_text(args.output_file)
+1 -8
View File
@@ -39,7 +39,6 @@ REDIRECT_MAP = {
"how-tos/configuration.ipynb": "how-tos/graph-api/#add-runtime-configuration",
"how-tos/node-retries.ipynb": "how-tos/graph-api/#add-retry-policies",
"how-tos/return-when-recursion-limit-hits.ipynb": "how-tos/graph-api/#impose-a-recursion-limit",
"how-tos/async.ipynb": "how-tos/graph-api/#async",
# memory how-tos
"how-tos/memory/manage-conversation-history.ipynb": "how-tos/memory.ipynb",
"how-tos/memory/delete-messages.ipynb": "how-tos/memory.ipynb#delete-messages",
@@ -53,7 +52,6 @@ REDIRECT_MAP = {
"how-tos/persistence_redis.ipynb": "how-tos/persistence.ipynb#use-in-production",
"how-tos/subgraph-persistence.ipynb": "how-tos/persistence.ipynb#use-with-subgraphs",
"how-tos/cross-thread-persistence.ipynb": "how-tos/persistence.ipynb#add-long-term-memory",
"cloud/how-tos/copy_threads": "cloud/how-tos/use_threads",
# tool calling how-tos
"how-tos/tool-calling-errors.ipynb": "how-tos/tool-calling.ipynb#handle-errors",
"how-tos/pass-config-to-tools.ipynb": "how-tos/tool-calling.ipynb#access-config",
@@ -69,9 +67,6 @@ REDIRECT_MAP = {
"cloud/concepts/api.md": "concepts/langgraph_server.md",
"cloud/concepts/cloud.md": "concepts/langgraph_cloud.md",
"cloud/faq/studio.md": "concepts/langgraph_studio.md#studio-faqs",
"cloud/how-tos/human_in_the_loop_edit_state.md": "cloud/how-tos/add-human-in-the-loop.md",
"cloud/how-tos/human_in_the_loop_user_input.md": "cloud/how-tos/add-human-in-the-loop.md",
"concepts/platform_architecture.md": "concepts/langgraph_cloud#architecture",
# cloud streaming redirects
"cloud/how-tos/stream_values.md": "cloud/how-tos/streaming.md#stream-graph-state",
"cloud/how-tos/stream_updates.md": "cloud/how-tos/streaming.md#stream-graph-state",
@@ -99,9 +94,7 @@ REDIRECT_MAP = {
"tutorials/introduction.ipynb": "concepts/why-langgraph.md",
# deployment redirects
"how-tos/deploy-self-hosted.md": "cloud/deployment/self_hosted_data_plane.md",
"concepts/self_hosted.md": "concepts/langgraph_self_hosted_data_plane.md",
# assistant redirects
"cloud/how-tos/assistant_versioning.md": "cloud/how-tos/configuration_cloud.md"
"concepts/self_hosted.md": "concepts/langgraph_self_hosted_data_plane.md"
}
+5 -11
View File
@@ -5,7 +5,6 @@ import os
import json
import click
import nbformat
import re
logger = logging.getLogger(__name__)
NOTEBOOK_DIRS = ("docs/how-tos","docs/tutorials")
@@ -89,10 +88,12 @@ def has_blocklisted_command(code: str, metadata: dict) -> bool:
return True
return False
MERMAID_PATTERN = re.compile(r'display\(Image\((\w+)\.get_graph\(\)\.draw_mermaid_png\(\)\)\)')
def remove_mermaid(code: str) -> str:
return MERMAID_PATTERN.sub('print()', code)
return code.replace(
"display(Image(graph.get_graph().draw_mermaid_png()))",
# replace with a dummy statement
"print()"
)
def add_vcr_to_notebook(
@@ -107,8 +108,6 @@ def add_vcr_to_notebook(
continue
lines = cell.source.splitlines()
# remove the special tag for hidden cells
lines = [line for line in lines if not line.strip().startswith("# hide-cell")]
# skip if empty cell
if not lines:
continue
@@ -196,11 +195,6 @@ def remove_mermaid_from_notebook(notebook: nbformat.NotebookNode) -> nbformat.No
continue
cell.source = remove_mermaid(cell.source)
# skip the cell entirely if it contains PYPPETEER
if "PYPPETEER" in cell.source:
cell.source = ""
return notebook
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
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@@ -1 +0,0 @@
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+1 -1
View File
@@ -89,4 +89,4 @@ LangGraph Studio Web is a specialized UI that you can connect to LangGraph API s
## Deployment
Once your LangGraph app is running locally, you can deploy it using LangGraph Platform. Refer to the [deployment options guide](../tutorials/deployment.md) for detailed instructions on all supported deployment models.
Once your LangGraph app is running locally, you can deploy it using LangGraph Cloud or self-hosted options. Refer to the [deployment options guide](../tutorials/deployment.md) for detailed instructions on all supported deployment models.
+1 -1
View File
@@ -106,7 +106,7 @@ for chunk in agent.stream(
print("\n")
```
1. The [`interrupt` function][langgraph.types.interrupt] is used in conjunction with the [`Command`][langgraph.types.Command] object to resume the graph with a value provided by the human.
1. The [`interrupt` function][langgraph.types.interrupt] is used in conjunction with the [`Command`](../reference/types.md#langgraph.types.Command) object to resume the graph with a value provided by the human.
## Using with Agent Inbox
+17 -19
View File
@@ -29,7 +29,7 @@ from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
# highlight-next-line
client = MultiServerMCPClient(
async with MultiServerMCPClient(
{
"math": {
"command": "python",
@@ -39,24 +39,22 @@ client = MultiServerMCPClient(
},
"weather": {
# Ensure your start your weather server on port 8000
"url": "http://localhost:8000/mcp",
"transport": "streamable_http",
"url": "http://localhost:8000/sse",
"transport": "sse",
}
}
)
# highlight-next-line
tools = await client.get_tools()
agent = create_react_agent(
"anthropic:claude-3-7-sonnet-latest",
# highlight-next-line
tools
)
math_response = await agent.ainvoke(
{"messages": [{"role": "user", "content": "what's (3 + 5) x 12?"}]}
)
weather_response = await agent.ainvoke(
{"messages": [{"role": "user", "content": "what is the weather in nyc?"}]}
)
) as client:
agent = create_react_agent(
"anthropic:claude-3-7-sonnet-latest",
# highlight-next-line
client.get_tools()
)
math_response = await agent.ainvoke(
{"messages": [{"role": "user", "content": "what's (3 + 5) x 12?"}]}
)
weather_response = await agent.ainvoke(
{"messages": [{"role": "user", "content": "what is the weather in nyc?"}]}
)
```
## Custom MCP servers
@@ -89,7 +87,7 @@ if __name__ == "__main__":
mcp.run(transport="stdio")
```
```python title="Example Weather Server (Streamable HTTP transport)"
```python title="Example Weather Server (SSE transport)"
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("Weather")
@@ -100,7 +98,7 @@ async def get_weather(location: str) -> str:
return "It's always sunny in New York"
if __name__ == "__main__":
mcp.run(transport="streamable-http")
mcp.run(transport="sse")
```
## Additional resources
+2 -2
View File
@@ -294,7 +294,7 @@ agent.invoke(
)
```
For more details, see [how to update state from tools](../how-tos/tool-calling.ipynb#update).
For more details, see [how to update state from tools](../how-tos/update-state-from-tools.ipynb).
## Long-term memory
@@ -302,7 +302,7 @@ Use long-term memory to store user-specific or application-specific data across
To use long-term memory, you need to:
1. [Configure a store](../how-tos/persistence.ipynb#add-long-term-memory) to persist data across invocations.
1. [Configure a store](../how-tos/cross-thread-persistence.ipynb) to persist data across invocations.
2. Use the [`get_store`][langgraph.config.get_store] function to access the store from within tools or prompts.
### Read { #read-long-term }
+16 -169
View File
@@ -23,182 +23,29 @@ Compatible models can be found in the [LangChain integrations directory](https:/
You can configure an agent with a model name string:
=== "OpenAI"
```python
import os
from langgraph.prebuilt import create_react_agent
os.environ["OPENAI_API_KEY"] = "sk-..."
agent = create_react_agent(
# highlight-next-line
model="openai:gpt-4.1",
# other parameters
)
```
=== "Anthropic"
```python
import os
from langgraph.prebuilt import create_react_agent
os.environ["ANTHROPIC_API_KEY"] = "sk-..."
agent = create_react_agent(
# highlight-next-line
model="anthropic:claude-3-7-sonnet-latest",
# other parameters
)
```
=== "Azure"
```python
import os
from langgraph.prebuilt import create_react_agent
os.environ["AZURE_OPENAI_API_KEY"] = "..."
os.environ["AZURE_OPENAI_ENDPOINT"] = "..."
os.environ["OPENAI_API_VERSION"] = "2025-03-01-preview"
agent = create_react_agent(
# highlight-next-line
model="azure_openai:gpt-4.1",
# other parameters
)
```
=== "Google Gemini"
```python
import os
from langgraph.prebuilt import create_react_agent
os.environ["GOOGLE_API_KEY"] = "..."
agent = create_react_agent(
# highlight-next-line
model="google_genai:gemini-2.0-flash",
# other parameters
)
```
=== "AWS Bedrock"
```python
from langgraph.prebuilt import create_react_agent
# Follow the steps here to configure your credentials:
# https://docs.aws.amazon.com/bedrock/latest/userguide/getting-started.html
agent = create_react_agent(
# highlight-next-line
model="bedrock_converse:anthropic.claude-3-5-sonnet-20240620-v1:0",
# other parameters
)
```
```python
from langgraph.prebuilt import create_react_agent
agent = create_react_agent(
# highlight-next-line
model="anthropic:claude-3-7-sonnet-latest",
# other parameters
)
```
## Using `init_chat_model`
The [`init_chat_model`](https://python.langchain.com/docs/how_to/chat_models_universal_init/) utility simplifies model initialization with configurable parameters:
=== "OpenAI"
```
pip install -U "langchain[openai]"
```
```python
import os
from langchain.chat_models import init_chat_model
os.environ["OPENAI_API_KEY"] = "sk-..."
model = init_chat_model(
"openai:gpt-4.1",
temperature=0,
# other parameters
)
```
=== "Anthropic"
```
pip install -U "langchain[anthropic]"
```
```python
import os
from langchain.chat_models import init_chat_model
os.environ["ANTHROPIC_API_KEY"] = "sk-..."
model = init_chat_model(
"anthropic:claude-3-5-sonnet-latest",
temperature=0,
# other parameters
)
```
=== "Azure"
```
pip install -U "langchain[openai]"
```
```python
import os
from langchain.chat_models import init_chat_model
os.environ["AZURE_OPENAI_API_KEY"] = "..."
os.environ["AZURE_OPENAI_ENDPOINT"] = "..."
os.environ["OPENAI_API_VERSION"] = "2025-03-01-preview"
model = init_chat_model(
"azure_openai:gpt-4.1",
azure_deployment=os.environ["AZURE_OPENAI_DEPLOYMENT_NAME"],
temperature=0,
# other parameters
)
```
=== "Google Gemini"
```
pip install -U "langchain[google-genai]"
```
```python
import os
from langchain.chat_models import init_chat_model
os.environ["GOOGLE_API_KEY"] = "..."
model = init_chat_model(
"google_genai:gemini-2.0-flash",
temperature=0,
# other parameters
)
```
=== "AWS Bedrock"
```
pip install -U "langchain[aws]"
```
```python
from langchain.chat_models import init_chat_model
# Follow the steps here to configure your credentials:
# https://docs.aws.amazon.com/bedrock/latest/userguide/getting-started.html
model = init_chat_model(
"anthropic.claude-3-5-sonnet-20240620-v1:0",
model_provider="bedrock_converse",
temperature=0,
# other parameters
)
```
```python
from langchain.chat_models import init_chat_model
model = init_chat_model(
"anthropic:claude-3-7-sonnet-latest",
temperature=0,
max_tokens=2048
)
```
Refer to the [API reference](https://python.langchain.com/api_reference/langchain/chat_models/langchain.chat_models.base.init_chat_model.html) for advanced options.
-136
View File
@@ -53,139 +53,3 @@ The high-level components are organized into several packages, each with a speci
| `langmem` | Agent memory management: [**short-term and long-term**](./memory.md) | `pip install -U langmem` |
| `agentevals` | Utilities to [**evaluate agent performance**](./evals.md) | `pip install -U agentevals` |
## Visualize an agent graph
Use the following tool to visualize the graph generated by
[`create_react_agent`][langgraph.prebuilt.chat_agent_executor.create_react_agent]
and to view an outline of the corresponding code.
It allows you to explore the infrastructure of the agent as defined by the presence of:
* [`tools`](../agents/tools.md): A list of tools (functions, APIs, or other callable objects) that the agent can use to perform tasks.
* [`pre_model_hook`](../how-tos/create-react-agent-manage-message-history.ipynb): A function that is called before the model is invoked. It can be used to condense messages or perform other preprocessing tasks.
* `post_model_hook`: A function that is called after the model is invoked. It can be used to implement guardrails, human-in-the-loop flows, or other postprocessing tasks.
* [`response_format`](../agents/agents.md#6-configure-structured-output): A data structure used to constrain the type of the final output, e.g., a `pydantic` `BaseModel`.
<div class="agent-layout">
<div class="agent-graph-features-container">
<div class="agent-graph-features">
<h3 class="agent-section-title">Features</h3>
<label><input type="checkbox" id="tools" checked> <code>tools</code></label>
<label><input type="checkbox" id="pre_model_hook"> <code>pre_model_hook</code></label>
<label><input type="checkbox" id="post_model_hook"> <code>post_model_hook</code></label>
<label><input type="checkbox" id="response_format"> <code>response_format</code></label>
</div>
</div>
<div class="agent-graph-container">
<h3 class="agent-section-title">Graph</h3>
<img id="agent-graph-img" src="../assets/react_agent_graphs/0001.svg" alt="graph image" style="max-width: 100%;"/>
</div>
</div>
The following code snippet shows how to create the above agent (and underlying graph) with
[`create_react_agent`][langgraph.prebuilt.chat_agent_executor.create_react_agent]:
<div class="language-python">
<pre><code id="agent-code" class="language-python"></code></pre>
</div>
<script>
function getCheckedValue(id) {
return document.getElementById(id).checked ? "1" : "0";
}
function getKey() {
return [
getCheckedValue("response_format"),
getCheckedValue("post_model_hook"),
getCheckedValue("pre_model_hook"),
getCheckedValue("tools")
].join("");
}
function generateCodeSnippet({ tools, pre, post, response }) {
const lines = [
"from langgraph.prebuilt import create_react_agent",
"from langchain_openai import ChatOpenAI"
];
if (response) lines.push("from pydantic import BaseModel");
lines.push("", 'model = ChatOpenAI("o4-mini")', "");
if (tools) {
lines.push(
"def tool() -> None:",
' """Testing tool."""',
" ...",
""
);
}
if (pre) {
lines.push(
"def pre_model_hook() -> None:",
' """Pre-model hook."""',
" ...",
""
);
}
if (post) {
lines.push(
"def post_model_hook() -> None:",
' """Post-model hook."""',
" ...",
""
);
}
if (response) {
lines.push(
"class ResponseFormat(BaseModel):",
' """Response format for the agent."""',
" result: str",
""
);
}
lines.push("agent = create_react_agent(");
lines.push(" model,");
if (tools) lines.push(" tools=[tool],");
if (pre) lines.push(" pre_model_hook=pre_model_hook,");
if (post) lines.push(" post_model_hook=post_model_hook,");
if (response) lines.push(" response_format=ResponseFormat,");
lines.push(")", "", "agent.get_graph().draw_mermaid_png()");
return lines.join("\n");
}
async function render() {
const key = getKey();
document.getElementById("agent-graph-img").src = `../assets/react_agent_graphs/${key}.svg`;
const state = {
tools: document.getElementById("tools").checked,
pre: document.getElementById("pre_model_hook").checked,
post: document.getElementById("post_model_hook").checked,
response: document.getElementById("response_format").checked
};
document.getElementById("agent-code").textContent = generateCodeSnippet(state);
}
function initializeWidget() {
render(); // no need for `await` here
document.querySelectorAll(".agent-graph-features input").forEach((input) => {
input.addEventListener("change", render);
});
}
// Init for both full reload and SPA nav (used by MkDocs Material)
window.addEventListener("DOMContentLoaded", initializeWidget);
document$.subscribe(initializeWidget);
</script>
+2 -2
View File
@@ -10,7 +10,7 @@ hide:
# Running agents
Agents support both synchronous and asynchronous execution using either `.invoke()` / `await .ainvoke()` for full responses, or `.stream()` / `.astream()` for **incremental** [streaming](streaming.md) output. This section explains how to provide input, interpret output, enable streaming, and control execution limits.
Agents support both synchronous and asynchronous execution using either `.invoke()` / `await .invoke()` for full responses, or `.stream()` / `.astream()` for **incremental** [streaming](streaming.md) output. This section explains how to provide input, interpret output, enable streaming, and control execution limits.
## Basic usage
@@ -18,7 +18,7 @@ Agents support both synchronous and asynchronous execution using either `.invoke
Agents can be executed in two primary modes:
- **Synchronous** using `.invoke()` or `.stream()`
- **Asynchronous** using `await .ainvoke()` or `async for` with `.astream()`
- **Asynchronous** using `await .invoke()` or `async for` with `.astream()`
=== "Sync invocation"
```python
+1 -15
View File
@@ -280,21 +280,7 @@ LangGraph allows access to short-term and long-term memory from tools. See [Memo
## Prebuilt tools
You can use prebuilt tools from model providers by passing a dictionary with tool specs to the `tools` parameter of `create_react_agent`. For example, to use the `web_search_preview` tool from OpenAI:
```python
from langgraph.prebuilt import create_react_agent
agent = create_react_agent(
model="openai:gpt-4o-mini",
tools=[{"type": "web_search_preview"}]
)
response = agent.invoke(
{"messages": ["What was a positive news story from today?"]}
)
```
Additionally, LangChain supports a wide range of prebuilt tool integrations for interacting with APIs, databases, file systems, web data, and more. These tools extend the functionality of agents and enable rapid development.
LangChain supports a wide range of prebuilt tool integrations for interacting with APIs, databases, file systems, web data, and more. These tools extend the functionality of agents and enable rapid development.
You can browse the full list of available integrations in the [LangChain integrations directory](https://python.langchain.com/docs/integrations/tools/).
+1 -1
View File
@@ -13,7 +13,7 @@ You can use a prebuilt chat UI for interacting with any LangGraph agent through
## Run agent in UI
First, set up LangGraph API server [locally](./deployment.md#launch-langgraph-server-locally) or deploy your agent on [LangGraph Platform](https://langchain-ai.github.io/langgraph/cloud/quick_start/).
First, set up LangGraph API server [locally](./deployment.md#launch-langgraph-server-locally) or deploy your agent on [LangGraph Cloud](https://langchain-ai.github.io/langgraph/cloud/quick_start/).
Then, navigate to [Agent Chat UI](https://agentchat.vercel.app), or clone the repository and [run the dev server locally](https://github.com/langchain-ai/agent-chat-ui?tab=readme-ov-file#setup):
-19
View File
@@ -1,19 +0,0 @@
{
"0000": "graph TD;\n\t__start__ --> agent;\n\tagent --> __end__;",
"0001": "graph TD;\n\t__start__ --> agent;\n\tagent -.-> __end__;\n\tagent -.-> tools;\n\ttools --> agent;",
"0010": "graph TD;\n\t__start__ --> pre_model_hook;\n\tpre_model_hook --> agent;\n\tagent --> __end__;",
"0011": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent -.-> __end__;\n\tagent -.-> tools;\n\tpre_model_hook --> agent;\n\ttools --> pre_model_hook;",
"0100": "graph TD;\n\t__start__ --> agent;\n\tagent --> post_model_hook;\n\tpost_model_hook --> __end__;",
"0101": "graph TD;\n\t__start__ --> agent;\n\tagent --> post_model_hook;\n\tpost_model_hook -.-> __end__;\n\tpost_model_hook -.-> agent;\n\tpost_model_hook -.-> tools;\n\ttools --> agent;",
"0110": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent --> post_model_hook;\n\tpre_model_hook --> agent;\n\tpost_model_hook --> __end__;",
"0111": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent --> post_model_hook;\n\tpost_model_hook -.-> __end__;\n\tpost_model_hook -.-> pre_model_hook;\n\tpost_model_hook -.-> tools;\n\tpre_model_hook --> agent;\n\ttools --> pre_model_hook;",
"1000": "graph TD;\n\t__start__ --> agent;\n\tagent --> generate_structured_response;\n\tgenerate_structured_response --> __end__;",
"1001": "graph TD;\n\t__start__ --> agent;\n\tagent -.-> generate_structured_response;\n\tagent -.-> tools;\n\ttools --> agent;\n\tgenerate_structured_response --> __end__;",
"1010": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent --> generate_structured_response;\n\tpre_model_hook --> agent;\n\tgenerate_structured_response --> __end__;",
"1011": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent -.-> generate_structured_response;\n\tagent -.-> tools;\n\tpre_model_hook --> agent;\n\ttools --> pre_model_hook;\n\tgenerate_structured_response --> __end__;",
"1100": "graph TD;\n\t__start__ --> agent;\n\tagent --> post_model_hook;\n\tpost_model_hook --> generate_structured_response;\n\tgenerate_structured_response --> __end__;",
"1101": "graph TD;\n\t__start__ --> agent;\n\tagent --> post_model_hook;\n\tpost_model_hook -.-> agent;\n\tpost_model_hook -.-> generate_structured_response;\n\tpost_model_hook -.-> tools;\n\ttools --> agent;\n\tgenerate_structured_response --> __end__;",
"1110": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent --> post_model_hook;\n\tpost_model_hook --> generate_structured_response;\n\tpre_model_hook --> agent;\n\tgenerate_structured_response --> __end__;",
"1111": "graph TD;\n\t__start__ --> pre_model_hook;\n\tagent --> post_model_hook;\n\tpost_model_hook -.-> generate_structured_response;\n\tpost_model_hook -.-> pre_model_hook;\n\tpost_model_hook -.-> tools;\n\tpre_model_hook --> agent;\n\ttools --> pre_model_hook;\n\tgenerate_structured_response --> __end__;"
}
+2 -2
View File
@@ -5,11 +5,11 @@ There are many situations in which it is useful to run an assistant on a schedul
For example, say that you're building an assistant that runs daily and sends an email summary
of the day's news. You could use a cron job to run the assistant every day at 8:00 PM.
LangGraph Platform supports cron jobs, which run on a user-defined schedule. The user specifies a schedule, an assistant, and some input. After that, on the specified schedule, the server will:
LangGraph Cloud supports cron jobs, which run on a user-defined schedule. The user specifies a schedule, an assistant, and some input. After that, on the specified schedule, the server will:
- Create a new thread with the specified assistant
- Send the specified input to that thread
Note that this sends the same input to the thread every time. See the [how-to guide](../../cloud/how-tos/cron_jobs.md) for creating cron jobs.
The LangGraph Platform API provides several endpoints for creating and managing cron jobs. See the [API reference](../../cloud/reference/api/api_ref.html#tag/runscreate/POST/threads/{thread_id}/runs/crons) for more details.
The LangGraph Cloud API provides several endpoints for creating and managing cron jobs. See the [API reference](../../cloud/reference/api/api_ref.html#tag/runscreate/POST/threads/{thread_id}/runs/crons) for more details.
+1 -1
View File
@@ -2,4 +2,4 @@
A run is an invocation of an [assistant](../../concepts/assistants.md). Each run may have its own input, configuration, and metadata, which may affect execution and output of the underlying graph. A run can optionally be executed on a [thread](./threads.md).
The LangGraph Platform API provides several endpoints for creating and managing runs. See the [API reference](../../cloud/reference/api/api_ref.html#tag/thread-runs/) for more details.
The LangGraph Cloud API provides several endpoints for creating and managing runs. See the [API reference](../../cloud/reference/api/api_ref.html#tag/thread-runs/) for more details.
+4 -5
View File
@@ -1,12 +1,11 @@
# Threads
A thread contains the accumulated state of a sequence of [runs](./runs.md). When a run is executed, the [state](../../concepts/low_level.md#state) of the underlying graph of the assistant will be persisted to the thread.
A thread contains the accumulated state of a sequence of [runs](./runs.md). If a run is executed on a thread, then the [state](../../concepts/low_level.md#state) of the underlying graph of the assistant will be persisted to the thread.
A thread's current and historical state can be retrieved. To persist state, a thread must be created prior to executing a run.
The state of a thread at a particular point in time is called a [checkpoint](../../concepts/persistence.md#checkpoints). Checkpoints are persisted and can be used to restore the state of a thread at a later time.
The state of a thread at a particular point in time is called a [checkpoint](../../concepts/persistence.md#checkpoints). Checkpoints can be used to restore the state of a thread at a later time.
## Learn more
For more on threads and checkpoints, see this section of the [LangGraph conceptual guide](../../concepts/persistence.md).
* For more on threads and checkpoints, see this section of the [LangGraph conceptual guide](../../concepts/persistence.md).
* The LangGraph Platform API provides several endpoints for creating and managing threads and thread state. See the [API reference](../../cloud/reference/api/api_ref.html#tag/threads) for more details.
The LangGraph Cloud API provides several endpoints for creating and managing threads and thread state. See the [API reference](../../cloud/reference/api/api_ref.html#tag/threads) for more details.
+2 -2
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@@ -1,7 +1,7 @@
# Webhooks
Webhooks enable event-driven communication from your LangGraph Platform application to external services. For example, you may want to issue an update to a separate service once an API call to LangGraph Platform has finished running.
Webhooks enable event-driven communication from your LangGraph Cloud application to external services. For example, you may want to issue an update to a separate service once an API call to LangGraph Cloud has finished running.
Many LangGraph Platform endpoints accept a `webhook` parameter. If this parameter is specified by an endpoint that can accept POST requests, LangGraph Platform will send a request at the completion of a run.
Many LangGraph Cloud endpoints accept a `webhook` parameter. If this parameter is specified by a an endpoint that can accept POST requests, LangGraph Cloud will send a request at the completion of a run.
See the corresponding [how-to guide](../../cloud/how-tos/webhooks.md) for more detail.
+5 -5
View File
@@ -4,14 +4,14 @@ Before deploying, review the [conceptual guide for the Cloud SaaS](../../concept
## Prerequisites
1. LangGraph Platform applications are deployed from GitHub repositories. Configure and upload a LangGraph Platform application to a GitHub repository in order to deploy it to LangGraph Platform.
1. [Verify that the LangGraph API runs locally](../../tutorials/langgraph-platform/local-server.md). If the API does not run successfully (i.e. `langgraph dev`), deploying to LangGraph Platform will fail as well.
1. LangGraph Cloud applications are deployed from GitHub repositories. Configure and upload a LangGraph Cloud application to a GitHub repository in order to deploy it to LangGraph Cloud.
1. [Verify that the LangGraph API runs locally](../../tutorials/langgraph-platform/local-server.md). If the API does not run successfully (i.e. `langgraph dev`), deploying to LangGraph Cloud will fail as well.
## Create New Deployment
Starting from the <a href="https://smith.langchain.com/" target="_blank">LangSmith UI</a>...
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Platform deployments.
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Cloud deployments.
1. In the top-right corner, select `+ New Deployment` to create a new deployment.
1. In the `Create New Deployment` panel, fill out the required fields.
1. `Deployment details`
@@ -38,7 +38,7 @@ When [creating a new deployment](#create-new-deployment), a new revision is crea
Starting from the <a href="https://smith.langchain.com/" target="_blank">LangSmith UI</a>...
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Platform deployments.
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Cloud deployments.
1. Select an existing deployment to create a new revision for.
1. In the `Deployment` view, in the top-right corner, select `+ New Revision`.
1. In the `New Revision` modal, fill out the required fields.
@@ -79,7 +79,7 @@ Starting from the `LangGraph Platform` view...
Starting from the <a href="https://smith.langchain.com/" target="_blank">LangSmith UI</a>...
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Platform deployments.
1. In the left-hand navigation panel, select `LangGraph Platform`. The `LangGraph Platform` view contains a list of existing LangGraph Cloud deployments.
1. Select the menu icon (three dots) on the right-hand side of the row for the desired deployment and select `Delete`.
1. A `Confirmation` modal will appear. Select `Delete`.
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@@ -2,8 +2,8 @@
Before deploying, review the [conceptual guide for the Self-Hosted Control Plane](../../concepts/langgraph_self_hosted_control_plane.md) deployment option.
!!! info "Important"
The Self-Hosted Control Plane deployment option is currently in beta stage and requires an [Enterprise](../../concepts/plans.md) plan.
!!! important "Beta"
The Self-Hosted Control Plane deployment option is currently in beta stage.
## Prerequisites
@@ -2,8 +2,8 @@
Before deploying, review the [conceptual guide for the Self-Hosted Data Plane](../../concepts/langgraph_self_hosted_data_plane.md) deployment option.
!!! info "Important"
The Self-Hosted Data Plane deployment option is currently in beta stage and requires an [Enterprise](../../concepts/plans.md) plan.
!!! important "Beta"
The Self-Hosted Data Plane deployment option is currently in beta stage.
## Prerequisites
@@ -18,7 +18,7 @@ Before deploying, review the [conceptual guide for the Self-Hosted Data Plane](.
helm repo add kedacore https://kedacore.github.io/charts
helm install keda kedacore/keda --namespace keda --create-namespace
1. A valid `Ingress` controller is installed on your cluster.
1. A valid `Ingress` controller is install on your cluster.
1. You have slack space in your cluster for multiple deployments. `Cluster-Autoscaler` is recommended to automatically provision new nodes.
### Setup
+5 -2
View File
@@ -1,11 +1,11 @@
# How to Set Up a LangGraph Application with requirements.txt
A LangGraph application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Platform (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph application for deployment using `requirements.txt` to specify project dependencies.
A LangGraph application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Cloud (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph application for deployment using `requirements.txt` to specify project dependencies.
This walkthrough is based on [this repository](https://github.com/langchain-ai/langgraph-example), which you can play around with to learn more about how to setup your LangGraph application for deployment.
!!! tip "Setup with pyproject.toml"
If you prefer using poetry for dependency management, check out [this how-to guide](./setup_pyproject.md) on using `pyproject.toml` for LangGraph Platform.
If you prefer using poetry for dependency management, check out [this how-to guide](./setup_pyproject.md) on using `pyproject.toml` for LangGraph Cloud.
!!! tip "Setup with a Monorepo"
If you are interested in deploying a graph located inside a monorepo, take a look at [this repository](https://github.com/langchain-ai/langgraph-example-monorepo) for an example of how to do so.
@@ -129,6 +129,9 @@ workflow.add_edge("action", "agent")
graph = workflow.compile()
```
!!! warning "Assign `CompiledGraph` to Variable"
The build process for LangGraph Cloud requires that the `CompiledGraph` object be assigned to a variable at the top-level of a Python module (alternatively, you can provide [a function that creates a graph](./graph_rebuild.md)).
Example file directory:
```bash
@@ -1,6 +1,6 @@
# How to Set Up a LangGraph.js Application
A [LangGraph.js](https://langchain-ai.github.io/langgraphjs/) application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Platform (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph.js application for deployment using `package.json` to specify project dependencies.
A [LangGraph.js](https://langchain-ai.github.io/langgraphjs/) application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Cloud (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph.js application for deployment using `package.json` to specify project dependencies.
This walkthrough is based on [this repository](https://github.com/langchain-ai/langgraphjs-studio-starter), which you can play around with to learn more about how to setup your LangGraph application for deployment.
@@ -155,6 +155,10 @@ const workflow = new StateGraph(MessagesAnnotation)
export const graph = workflow.compile();
```
!!! info "Assign `CompiledGraph` to Variable"
The build process for LangGraph Cloud requires that the `CompiledGraph` object be assigned to a variable at the top-level of a JavaScript module (alternatively, you can provide [a function that creates a graph](./graph_rebuild.md)).
Example file directory:
```bash
+16 -18
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@@ -1,6 +1,6 @@
# How to Set Up a LangGraph Application with pyproject.toml
A LangGraph application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Platform (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph application for deployment using `pyproject.toml` to define your package's dependencies.
A LangGraph application must be configured with a [LangGraph configuration file](../reference/cli.md#configuration-file) in order to be deployed to LangGraph Cloud (or to be self-hosted). This how-to guide discusses the basic steps to setup a LangGraph application for deployment using `pyproject.toml` to define your package's dependencies.
This walkthrough is based on [this repository](https://github.com/langchain-ai/langgraph-example-pyproject), which you can play around with to learn more about how to setup your LangGraph application for deployment.
@@ -56,27 +56,22 @@ cloudpickle>=3.0.0
Example `pyproject.toml` file:
```toml
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
[project]
[tool.poetry]
name = "my-agent"
version = "0.0.1"
description = "An excellent agent build for LangGraph Platform."
authors = [
{name = "Polly the parrot", email = "1223+polly@users.noreply.github.com"}
]
license = {text = "MIT"}
description = "An excellent agent build for LangGraph cloud."
authors = ["Polly the parrot <1223+polly@users.noreply.github.com>"]
license = "MIT"
readme = "README.md"
requires-python = ">=3.9"
dependencies = [
"langgraph>=0.2.0",
"langchain-fireworks>=0.1.3"
]
[tool.hatch.build.targets.wheel]
packages = ["my_agent"]
[tool.poetry.dependencies]
python = ">=3.9"
langgraph = "^0.2.0"
langchain-fireworks = "^0.1.3"
[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"
```
Example file directory:
@@ -142,6 +137,9 @@ workflow.add_edge("action", "agent")
graph = workflow.compile()
```
!!! warning "Assign `CompiledGraph` to Variable"
The build process for LangGraph Cloud requires that the `CompiledGraph` object be assigned to a variable at the top-level of a Python module.
Example file directory:
```bash
@@ -1,342 +0,0 @@
# Human-in-the-loop
LangGraph supports robust **human-in-the-loop (HIL)** workflows, enabling human intervention at any point in an automated process. This is especially useful in large language model (LLM)-driven applications where model output may require validation, correction, or additional context.
Please see [the overview of LangGraph human-in-the-loop](../../concepts/human_in_the_loop.md) features for more information.
## `interrupt`
The [`interrupt` function][langgraph.types.interrupt] in LangGraph enables human-in-the-loop workflows by pausing the graph at a specific node, presenting information to a human, and resuming the graph with their input. It's useful for tasks like approvals, edits, or gathering additional context.
The graph is resumed using a [`Command`][langgraph.types.Command] object that provides the human's response.
**Graph node with `interrupt`:**
```python
# highlight-next-line
from langgraph.types import interrupt, Command
def human_node(state: State):
# highlight-next-line
value = interrupt( # (1)!
{
"text_to_revise": state["some_text"] # (2)!
}
)
return {
"some_text": value # (3)!
}
```
1. `interrupt(...)` pauses execution at `human_node`, surfacing the given payload to a human.
2. Any JSON serializable value can be passed to the `interrupt` function. Here, a dict containing the text to revise.
3. Once resumed, the return value of `interrupt(...)` is the human-provided input, which is used to update the state.
**LangGraph API invoke & resume:**
=== "Python"
```python
from langgraph_sdk import get_client
# highlight-next-line
from langgraph_sdk.schema import Command
client = get_client(url=<DEPLOYMENT_URL>)
# Using the graph deployed with the name "agent"
assistant_id = "agent"
# create a thread
thread = await client.threads.create()
thread_id = thread["thread_id"]
# Run the graph until the interrupt is hit.
result = await client.runs.wait(
thread_id,
assistant_id,
input={"some_text": "original text"} # (1)!
)
print(result['__interrupt__']) # (2)!
# > [
# > {
# > 'value': {'text_to_revise': 'original text'},
# > 'resumable': True,
# > 'ns': ['human_node:fc722478-2f21-0578-c572-d9fc4dd07c3b'],
# > 'when': 'during'
# > }
# > ]
# Resume the graph
print(await client.runs.wait(
thread_id,
assistant_id,
# highlight-next-line
command=Command(resume="Edited text") # (3)!
))
# > {'some_text': 'Edited text'}
```
1. The graph is invoked with some initial state.
2. When the graph hits the interrupt, it returns an interrupt object with the payload and metadata.
3. The graph is resumed with a `Command(resume=...)`, injecting the human's input and continuing execution.
=== "JavaScript"
```js
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: <DEPLOYMENT_URL> });
// Using the graph deployed with the name "agent"
const assistantID = "agent";
// create a thread
const thread = await client.threads.create();
const threadID = thread["thread_id"];
// Run the graph until the interrupt is hit.
const result = await client.runs.wait(
threadID,
assistantID,
{ input: { "some_text": "original text" } } // (1)!
);
console.log(result['__interrupt__']); // (2)!
// > [
// > {
// > 'value': {'text_to_revise': 'original text'},
// > 'resumable': True,
// > 'ns': ['human_node:fc722478-2f21-0578-c572-d9fc4dd07c3b'],
// > 'when': 'during'
// > }
// > ]
// Resume the graph
console.log(await client.runs.wait(
threadID,
assistantID,
// highlight-next-line
{ command: { resume: "Edited text" }} // (3)!
));
// > {'some_text': 'Edited text'}
```
1. The graph is invoked with some initial state.
2. When the graph hits the interrupt, it returns an interrupt object with the payload and metadata.
3. The graph is resumed with a `{ resume: ... }` command object, injecting the human's input and continuing execution.
=== "cURL"
Create a thread:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{}'
```
Run the graph until the interrupt is hit.:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"input\": {\"some_text\": \"original text\"}
}"
```
Resume the graph:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"command\": {
\"resume\": \"Edited text\"
}
}"
```
??? example "Extended example: using `interrupt`"
This is an example graph you can run in the LangGraph API server.
See [LangGraph Platform quickstart](../quick_start.md) for more details.
```python
from typing import TypedDict
import uuid
from langgraph.checkpoint.memory import InMemorySaver
from langgraph.constants import START
from langgraph.graph import StateGraph
# highlight-next-line
from langgraph.types import interrupt, Command
class State(TypedDict):
some_text: str
def human_node(state: State):
# highlight-next-line
value = interrupt( # (1)!
{
"text_to_revise": state["some_text"] # (2)!
}
)
return {
"some_text": value # (3)!
}
# Build the graph
graph_builder = StateGraph(State)
graph_builder.add_node("human_node", human_node)
graph_builder.add_edge(START, "human_node")
graph = graph_builder.compile()
```
1. `interrupt(...)` pauses execution at `human_node`, surfacing the given payload to a human.
2. Any JSON serializable value can be passed to the `interrupt` function. Here, a dict containing the text to revise.
3. Once resumed, the return value of `interrupt(...)` is the human-provided input, which is used to update the state.
Once you have a running LangGraph API server, you can interact with it using
[LangGraph SDK](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/)
=== "Python"
```python
from langgraph_sdk import get_client
# highlight-next-line
from langgraph_sdk.schema import Command
client = get_client(url=<DEPLOYMENT_URL>)
# Using the graph deployed with the name "agent"
assistant_id = "agent"
# create a thread
thread = await client.threads.create()
thread_id = thread["thread_id"]
# Run the graph until the interrupt is hit.
result = await client.runs.wait(
thread_id,
assistant_id,
input={"some_text": "original text"} # (1)!
)
print(result['__interrupt__']) # (2)!
# > [
# > {
# > 'value': {'text_to_revise': 'original text'},
# > 'resumable': True,
# > 'ns': ['human_node:fc722478-2f21-0578-c572-d9fc4dd07c3b'],
# > 'when': 'during'
# > }
# > ]
# Resume the graph
print(await client.runs.wait(
thread_id,
assistant_id,
# highlight-next-line
command=Command(resume="Edited text") # (3)!
))
# > {'some_text': 'Edited text'}
```
1. The graph is invoked with some initial state.
2. When the graph hits the interrupt, it returns an interrupt object with the payload and metadata.
3. The graph is resumed with a `Command(resume=...)`, injecting the human's input and continuing execution.
=== "JavaScript"
```js
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: <DEPLOYMENT_URL> });
// Using the graph deployed with the name "agent"
const assistantID = "agent";
// create a thread
const thread = await client.threads.create();
const threadID = thread["thread_id"];
// Run the graph until the interrupt is hit.
const result = await client.runs.wait(
threadID,
assistantID,
{ input: { "some_text": "original text" } } // (1)!
);
console.log(result['__interrupt__']); // (2)!
// > [
// > {
// > 'value': {'text_to_revise': 'original text'},
// > 'resumable': True,
// > 'ns': ['human_node:fc722478-2f21-0578-c572-d9fc4dd07c3b'],
// > 'when': 'during'
// > }
// > ]
// Resume the graph
console.log(await client.runs.wait(
threadID,
assistantID,
// highlight-next-line
{ command: { resume: "Edited text" }} // (3)!
));
// > {'some_text': 'Edited text'}
```
1. The graph is invoked with some initial state.
2. When the graph hits the interrupt, it returns an interrupt object with the payload and metadata.
3. The graph is resumed with a `{ resume: ... }` command object, injecting the human's input and continuing execution.
=== "cURL"
Create a thread:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{}'
```
Run the graph until the interrupt is hit:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"input\": {\"some_text\": \"original text\"}
}"
```
Resume the graph:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"command\": {
\"resume\": \"Edited text\"
}
}"
```
## Learn more
- [**LangGraph human-in-the-loop overview**](../../concepts/human_in_the_loop.md): learn more about LangGraph human-in-the-loop features.
- [**Design patterns**](../../how-tos/human_in_the_loop/add-human-in-the-loop.md#design-patterns): learn how to implement patterns like approving/rejecting actions, requesting user input, and more.
- [**How to review tool calls**](./human_in_the_loop_review_tool_calls.md): detailed examples of how to review and approve/edit tool calls or provide feedback to the tool-calling LLM.
@@ -0,0 +1,152 @@
# How to version Assistants
!!! info "Prerequisites"
- [Assistants Overview](../../concepts/assistants.md)
- [How to create an Assistant](./configuration_cloud.md)
In this guide we will show you how to create, manage and use multiple versions of an assistant. If you have not already, please first see [this](./configuration_cloud.md) guide on creating an assistant. For this example, assume you have a graph with the following configuration schema:
=== "Python"
```python
class Config(BaseModel):
model_name: Literal["anthropic", "openai"] = "anthropic"
system_prompt: str
builder = StateGraph(State, config_schema=Config)
```
=== "Javascript"
```js
const ConfigAnnotation = Annotation.Root({
modelName: Annotation<z.enum(["openai", "anthropic"])>({
default: () => "anthropic",
}),
systemPrompt: Annotation<String>
});
// the rest of your code
const builder = new StateGraph(StateAnnotation, ConfigAnnotation);
```
And that you have the following assistant already created:
{
"assistant_id": "62e209ca-9154-432a-b9e9-2d75c7a9219b",
"graph_id": "agent",
"name": "Open AI Assistant"
"config": {
"configurable": {
"model_name": "openai",
"system_prompt": "You are a helpful assistant."
}
},
"metadata": {}
"created_at": "2024-08-31T03:09:10.230718+00:00",
"updated_at": "2024-08-31T03:09:10.230718+00:00",
}
## Create a new version for your assistant
### LangGraph SDK
To edit the assistant, use the `update` method. This will create a new version of the assistant with the provided edits. See the [Python](../reference/sdk/python_sdk_ref.md#langgraph_sdk.client.AssistantsClient.update) and [JS](../reference/sdk/js_ts_sdk_ref.md#update) SDK reference docs for more information.
!!! note "Note"
You must pass in the ENTIRE config (and metadata if you are using it). The update endpoint creates new versions completely from scratch and does not rely on previously versions.
For example, to update your assistant's system prompt:
=== "Python"
```python
openai_assistant_v2 = await client.assistants.update(
openai_assistant["assistant_id"],
config={
"configurable": {
"model_name": "openai",
"system_prompt": "You are an unhelpful assistant!",
}
},
)
```
=== "Javascript"
```js
const openaiAssistantV2 = await client.assistants.update(
openai_assistant["assistant_id"],
{
config: {
configurable: {
model_name: 'openai',
system_prompt: 'You are an unhelpful assistant!',
},
},
});
```
=== "CURL"
```bash
curl --request PATCH \
--url <DEPOLYMENT_URL>/assistants/<ASSISTANT_ID> \
--header 'Content-Type: application/json' \
--data '{
"config": {"model_name": "openai", "system_prompt": "You are an unhelpful assistant!"}
}'
```
This will create a new version of the assistant with the updated parameters and set this as the active version of your assistant. If you now run your graph and pass in this assistant id, it will use this latest version.
### LangGraph Platform UI
You can also edit assistants from the LangGraph Platform UI.
Inside your deployment, select the "Assistants" tab. This will load a table of all of the assistants in your deployment, across all graphs.
To edit an existing assistant, select the "Edit" button for the specified assistant. This will open a form where you can edit the assistant's name, description, and configuration.
Additionally, if using LangGraph Studio, you can edit the assistants and create new versions via the "Manage Assistants" button.
## Use a previous assistant version
### LangGraph SDK
You can also change the active version of your assistant. To do so, use the `setLatest` method.
In the example above, to rollback to the first version of the assistant:
=== "Python"
```python
await client.assistants.set_latest(openai_assistant['assistant_id'], 1)
```
=== "Javascript"
```js
await client.assistants.setLatest(openaiAssistant['assistant_id'], 1);
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/assistants/<ASSISTANT_ID>/latest \
--header 'Content-Type: application/json' \
--data '{
"version": 1
}'
```
If you now run your graph and pass in this assistant id, it will use the first version of the assistant.
### LangGraph Platform UI
If using LangGraph Studio, to set the active version of your asssistant, click the "Manage Assistants" button and locate the assistant you would like to use. Select the assistant and the version, and then click the "Active" toggle. This will update the assistant to make the selected version active.
!!! warning "Deleting Assistants"
Deleting as assistant will delete ALL of it's versions. There is currently no way to delete a single version, but by pointing your assistant to the correct version you can skip any versions that you don't wish to use.
@@ -0,0 +1,203 @@
# Check the Status of your Threads
## Setup
To start, we can setup our client with whatever URL you are hosting your graph from:
### SDK initialization
First, we need to setup our client so that we can communicate with our hosted graph:
=== "Python"
```python
from langgraph_sdk import get_client
client = get_client(url=<DEPLOYMENT_URL>)
# Using the graph deployed with the name "agent"
assistant_id = "agent"
thread = await client.threads.create()
```
=== "Javascript"
```js
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: <DEPLOYMENT_URL> });
// Using the graph deployed with the name "agent"
const assistantId = "agent";
const thread = await client.threads.create();
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{}'
```
## Find idle threads
We can use the following commands to find threads that are idle, which means that all runs executed on the thread have finished running:
=== "Python"
```python
print(await client.threads.search(status="idle",limit=1))
```
=== "Javascript"
```js
console.log(await client.threads.search({ status: "idle", limit: 1 }));
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/search \
--header 'Content-Type: application/json' \
--data '{"status": "idle", "limit": 1}'
```
Output:
[{'thread_id': 'cacf79bb-4248-4d01-aabc-938dbd60ed2c',
'created_at': '2024-08-14T17:36:38.921660+00:00',
'updated_at': '2024-08-14T17:36:38.921660+00:00',
'metadata': {'graph_id': 'agent'},
'status': 'idle',
'config': {'configurable': {}}}]
## Find interrupted threads
We can use the following commands to find threads that have been interrupted in the middle of a run, which could either mean an error occurred before the run finished or a human-in-the-loop breakpoint was reached and the run is waiting to continue:
=== "Python"
```python
print(await client.threads.search(status="interrupted",limit=1))
```
=== "Javascript"
```js
console.log(await client.threads.search({ status: "interrupted", limit: 1 }));
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/search \
--header 'Content-Type: application/json' \
--data '{"status": "interrupted", "limit": 1}'
```
Output:
[{'thread_id': '0d282b22-bbd5-4d95-9c61-04dcc2e302a5',
'created_at': '2024-08-14T17:41:50.235455+00:00',
'updated_at': '2024-08-14T17:41:50.235455+00:00',
'metadata': {'graph_id': 'agent'},
'status': 'interrupted',
'config': {'configurable': {}}}]
## Find busy threads
We can use the following commands to find threads that are busy, meaning they are currently handling the execution of a run:
=== "Python"
```python
print(await client.threads.search(status="busy",limit=1))
```
=== "Javascript"
```js
console.log(await client.threads.search({ status: "busy", limit: 1 }));
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/search \
--header 'Content-Type: application/json' \
--data '{"status": "busy", "limit": 1}'
```
Output:
[{'thread_id': '0d282b22-bbd5-4d95-9c61-04dcc2e302a5',
'created_at': '2024-08-14T17:41:50.235455+00:00',
'updated_at': '2024-08-14T17:41:50.235455+00:00',
'metadata': {'graph_id': 'agent'},
'status': 'busy',
'config': {'configurable': {}}}]
## Find specific threads
You may also want to check the status of specific threads, which you can do in a few ways:
### Find by ID
You can use the `get` function to find the status of a specific thread, as long as you have the ID saved
=== "Python"
```python
print((await client.threads.get(<THREAD_ID>))['status'])
```
=== "Javascript"
```js
console.log((await client.threads.get(<THREAD_ID>)).status);
```
=== "CURL"
```bash
curl --request GET \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID> \
--header 'Content-Type: application/json' | jq -r '.status'
```
Output:
'idle'
### Find by metadata
The search endpoint for threads also allows you to filter on metadata, which can be helpful if you use metadata to tag threads in order to keep them organized:
=== "Python"
```python
print((await client.threads.search(metadata={"foo":"bar"},limit=1))[0]['status'])
```
=== "Javascript"
```js
console.log((await client.threads.search({ metadata: { "foo": "bar" }, limit: 1 }))[0].status);
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/search \
--header 'Content-Type: application/json' \
--data '{"metadata": {"foo":"bar"}, "limit": 1}' | jq -r '.[0].status'
```
Output:
'idle'
+20 -25
View File
@@ -1,36 +1,31 @@
# Debug LangSmith traces
# Testing local agents with remote traces
This guide explains how to open LangSmith traces in LangGraph Studio for interactive investigation and debugging.
## Overview
## Open deployed threads
A common workflow when debugging production-deployed agents is to test the same thread against a local version of the same agent, which may have modifications.
1. Open the LangSmith trace, selecting the root run.
2. Click "Run in Studio".
To support this, LangGraph Studio, in combination with LangSmith, allows you to clone remote threads traced in LangSmith into your locally running agent. This cloned thread can then be used to re-run specific nodes within Studio.
This will open LangGraph Studio connected to the associated LangGraph Platform deployment with the trace's parent thread selected.
## Requirements
## Testing local agents with remote traces
This section explains how to test a local agent against remote traces from LangSmith. This enables you to use production traces as input for local testing, allowing you to debug and verify agent modifications in your development environment.
### Requirements
- A LangSmith traced thread
- A locally running agent. See [here](../how-tos/studio/quick_start.md#local-development-server) for setup
instructions.
!!! info "Local agent requirements"
!!! info "Prerequisites"
- langgraph>=0.3.18
- langgraph-api>=0.0.32
- Contains the same set of nodes present in the remote trace
### Cloning Thread
- A thread traced in LangSmith.
- A locally running agent. See [here](../../how-tos/local-studio.md) for setup instructions.
- Note that your local agent must be using the above specified `langgraph` and `langgraph-api` versions.
- The nodes present in the remote trace must exist in at least one of the graphs in your local agent.
1. Open the LangSmith trace, selecting the root run.
2. Click the dropdown next to "Run in Studio".
3. Enter your local agent's URL.
4. Select "Clone thread locally".
5. If multiple graphs exist, select the target graph.
## Cloning Thread
A new thread will be created in your local agent with the thread history inferred and copied from the remote thread, and you will be navigated to LangGraph Studio for your locally running application.
First navigate to the LangSmith trace. Here you should see a button to "Run in Studio".
![Run in Studio](img/run_in_studio.png){width=1200}
This will prompt you to enter the url that your locally running agent is accessible at. Once provided, select "Clone thread locally". If you have multiple graphs in your agent, you will also be prompted to select a graph to clone this thread under.
Once selected, a will a new thread in your local agent will be created and the thread history will be reconstruced to reflect the original trace.
Alternatively, if your trace originates from an agent deployed on LangGraph Platform, you can "View original thread" to open Studio with the actual deployed thread.
+12 -109
View File
@@ -1,6 +1,11 @@
# Manage assistants
# How to create Assistants
In this guide we will show how to create, configure, and manage an [assistant](../../concepts/assistants.md).
!!! info "Prerequisites"
- [Assistants Overview](../../concepts/assistants.md)
- [Configuration](../../concepts/low_level.md#configuration)
In this guide we will show how to create and configure an assistant.
First, as a brief refresher on the concept of configurations, consider the following simple `call_model` node and configuration schema. Observe that this node tries to read and use the `model_name` as defined by the `config` object's `configurable`.
@@ -46,11 +51,11 @@ First, as a brief refresher on the concept of configurations, consider the follo
For more information on configurations, [see here](../../concepts/low_level.md#configuration).
## Create an assistant
## Creating an Assistant
### LangGraph SDK
To create an assistant, use the [LangGraph SDK](../../concepts/sdk.md) `create` method. See the [Python](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/#langgraph_sdk.client.AssistantsClient.create) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#create) SDK reference docs for more information.
To create an assistant, use the [LangGraph SDK](../../concepts/sdk.md) `create` method. See the [Python](../reference/sdk/python_sdk_ref.md#langgraph_sdk.client.AssistantsClient.create) and [JS](../reference/sdk/js_ts_sdk_ref.md#create) SDK reference docs for more information.
This example uses the same configuration schema as above, and creates an assistant with `model_name` set to `openai`.
@@ -74,7 +79,7 @@ This example uses the same configuration schema as above, and creates an assista
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: <DEPLOYMENT_URL> });
const openAIAssistant = await client.assistants.create({
let openAIAssistant = await client.assistants.create({
graphId: 'agent',
name: "Open AI Assistant",
config: { "configurable": { "model_name": "openai" } },
@@ -118,7 +123,7 @@ To create a new assistant, select the "+ New assistant" button. This will open a
To confirm, click "Create assistant". This will take you to [LangGraph Studio](../../concepts/langgraph_studio.md) where you can test the assistant. If you go back to the "Assistants" tab in the deployment, you will see the newly created assistant in the table.
## Use an assistant
## Using an Assistant
### LangGraph SDK
@@ -145,7 +150,7 @@ We have now created an assistant called "Open AI Assistant" that has `model_name
```js
const thread = await client.threads.create();
const input = { "messages": [{ "role": "user", "content": "who made you?" }] };
let input = { "messages": [{ "role": "user", "content": "who made you?" }] };
const streamResponse = client.runs.stream(
thread["thread_id"],
@@ -223,105 +228,3 @@ Output:
### LangGraph Platform UI
Inside your deployment, select the "Assistants" tab. For the assistant you would like to use, click the "Studio" button. This will open LangGraph Studio with the selected assistant. When you submit an input (either in Graph or Chat mode), the selected assistant and its configuration will be used.
## Create a new version for your assistant
### LangGraph SDK
To edit the assistant, use the `update` method. This will create a new version of the assistant with the provided edits. See the [Python](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/#langgraph_sdk.client.AssistantsClient.update) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#update) SDK reference docs for more information.
!!! note "Note"
You must pass in the ENTIRE config (and metadata if you are using it). The update endpoint creates new versions completely from scratch and does not rely on previous versions.
For example, to update your assistant's system prompt:
=== "Python"
```python
openai_assistant_v2 = await client.assistants.update(
openai_assistant["assistant_id"],
config={
"configurable": {
"model_name": "openai",
"system_prompt": "You are an unhelpful assistant!",
}
},
)
```
=== "Javascript"
```js
const openaiAssistantV2 = await client.assistants.update(
openai_assistant["assistant_id"],
{
config: {
configurable: {
model_name: 'openai',
system_prompt: 'You are an unhelpful assistant!',
},
},
});
```
=== "CURL"
```bash
curl --request PATCH \
--url <DEPOLYMENT_URL>/assistants/<ASSISTANT_ID> \
--header 'Content-Type: application/json' \
--data '{
"config": {"model_name": "openai", "system_prompt": "You are an unhelpful assistant!"}
}'
```
This will create a new version of the assistant with the updated parameters and set this as the active version of your assistant. If you now run your graph and pass in this assistant id, it will use this latest version.
### LangGraph Platform UI
You can also edit assistants from the LangGraph Platform UI.
Inside your deployment, select the "Assistants" tab. This will load a table of all of the assistants in your deployment, across all graphs.
To edit an existing assistant, select the "Edit" button for the specified assistant. This will open a form where you can edit the assistant's name, description, and configuration.
Additionally, if using LangGraph Studio, you can edit the assistants and create new versions via the "Manage Assistants" button.
## Use a previous assistant version
### LangGraph SDK
You can also change the active version of your assistant. To do so, use the `setLatest` method.
In the example above, to rollback to the first version of the assistant:
=== "Python"
```python
await client.assistants.set_latest(openai_assistant['assistant_id'], 1)
```
=== "Javascript"
```js
await client.assistants.setLatest(openaiAssistant['assistant_id'], 1);
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/assistants/<ASSISTANT_ID>/latest \
--header 'Content-Type: application/json' \
--data '{
"version": 1
}'
```
If you now run your graph and pass in this assistant id, it will use the first version of the assistant.
### LangGraph Platform UI
If using LangGraph Studio, to set the active version of your assistant, click the "Manage Assistants" button and locate the assistant you would like to use. Select the assistant and the version, and then click the "Active" toggle. This will update the assistant to make the selected version active.
!!! warning "Deleting Assistants"
Deleting as assistant will delete ALL of its versions. There is currently no way to delete a single version, but by pointing your assistant to the correct version you can skip any versions that you don't wish to use.
+134
View File
@@ -0,0 +1,134 @@
# Copying Threads
You may wish to copy (i.e. "fork") an existing thread in order to keep the existing thread's history and create independent runs that do not affect the original thread. This guide shows how you can do that.
## Setup
This code assumes you already have a thread to copy.
For more information, see these guides on [Threads](../../cloud/concepts/threads.md) and [Streaming](../../concepts/streaming.md).
### SDK initialization
First, we need to setup our client so that we can communicate with our hosted graph:
=== "Python"
```python
from langgraph_sdk import get_client
client = get_client(url="<DEPLOYMENT_URL>")
assistant_id = "agent"
thread = await client.threads.create()
```
=== "Javascript"
```js
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: "<DEPLOYMENT_URL>" });
const assistantId = "agent";
const thread = await client.threads.create();
```
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{
"metadata": {}
}'
```
## Copying a thread
The code below assumes that a thread you'd like to copy already exists.
Copying a thread will create a new thread with the same history as the existing thread, and then allow you to continue executing runs.
### Create copy
=== "Python"
```python
copied_thread = await client.threads.copy(<THREAD_ID>)
```
=== "Javascript"
```js
let copiedThread = await client.threads.copy(<THREAD_ID>);
```
=== "CURL"
```bash
curl --request POST --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/copy \
--header 'Content-Type: application/json'
```
### Verify copy
We can verify that the history from the prior thread did indeed copy over correctly:
=== "Python"
```python
def remove_thread_id(d):
if 'metadata' in d and 'thread_id' in d['metadata']:
del d['metadata']['thread_id']
return d
original_thread_history = list(map(remove_thread_id,await client.threads.get_history(<THREAD_ID>)))
copied_thread_history = list(map(remove_thread_id,await client.threads.get_history(copied_thread['thread_id'])))
# Compare the two histories
assert original_thread_history == copied_thread_history
# if we made it here the assertion passed!
print("The histories are the same.")
```
=== "Javascript"
```js
function removeThreadId(d) {
if (d.metadata && d.metadata.thread_id) {
delete d.metadata.thread_id;
}
return d;
}
// Assuming `client.threads.getHistory(threadId)` is an async function that returns a list of dicts
async function compareThreadHistories(threadId, copiedThreadId) {
const originalThreadHistory = (await client.threads.getHistory(threadId)).map(removeThreadId);
const copiedThreadHistory = (await client.threads.getHistory(copiedThreadId)).map(removeThreadId);
// Compare the two histories
console.assert(JSON.stringify(originalThreadHistory) === JSON.stringify(copiedThreadHistory));
// if we made it here the assertion passed!
console.log("The histories are the same.");
}
// Example usage
compareThreadHistories(<THREAD_ID>, copiedThread.thread_id);
```
=== "CURL"
```bash
if diff <(
curl --request GET --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/history | jq -S 'map(del(.metadata.thread_id))'
) <(
curl --request GET --url <DEPLOYMENT_URL>/threads/<COPIED_THREAD_ID>/history | jq -S 'map(del(.metadata.thread_id))'
) >/dev/null; then
echo "The histories are the same."
else
echo "The histories are different."
fi
```
Output:
The histories are the same.
+3 -3
View File
@@ -1,10 +1,10 @@
# Use cron jobs
# Cron Jobs
Sometimes you don't want to run your graph based on user interaction, but rather you would like to schedule your graph to run on a schedule - for example if you wish for your graph to compose and send out a weekly email of to-dos for your team. LangGraph Platform allows you to do this without having to write your own script by using the `Crons` client. To schedule a graph job, you need to pass a [cron expression](https://crontab.cronhub.io/) to inform the client when you want to run the graph. `Cron` jobs are run in the background and do not interfere with normal invocations of the graph.
Sometimes you don't want to run your graph based on user interaction, but rather you would like to schedule your graph to run on a schedule - for example if you wish for your graph to compose and send out a weekly email of to-dos for your team. LangGraph Cloud allows you to do this without having to write your own script by using the `Crons` client. To schedule a graph job, you need to pass a [cron expression](https://crontab.cronhub.io/) to inform the client when you want to run the graph. `Cron` jobs are run in the background and do not interfere with normal invocations of the graph.
## Setup
First, let's set up our SDK client, assistant, and thread:
First, let's setup our SDK client, assistant, and thread:
=== "Python"
+13 -8
View File
@@ -1,12 +1,17 @@
# Add node to dataset
# Adding nodes as dataset examples in Studio
This guide shows how to add examples to [LangSmith datasets](https://docs.smith.langchain.com/evaluation/how_to_guides#dataset-management) from nodes in the thread log. This is useful to evaluate individual steps of the agent.
In LangGraph Studio you can create dataset examples from the thread history in the right-hand pane. This can be especially useful when you want to evaluate intermediate steps of the agent.
1. Select a thread.
2. Click on the `Add to Dataset` button.
3. Select nodes whose input/output you want to add to a dataset.
4. For each selected node, select the target dataset to create the example in. By default a dataset for the specific assistant and node will be selected. If this dataset does not yet exist, it will be created.
5. Edit the example's input/output as needed before adding it to the dataset.
6. Select "Add to dataset" at the bottom of the page to add all selected nodes to their respective datasets.
1. Click on the `Add to Dataset` button to enter the dataset mode.
1. Select nodes which you want to add to dataset.
1. Select the target dataset to create the example in.
You can edit the example payload before sending it to the dataset, which is useful if you need to make changes to conform the example to the dataset schema.
Finally, you can customise the target dataset by clicking on the `Settings` button.
See [Evaluating intermediate steps](https://docs.smith.langchain.com/evaluation/how_to_guides/langgraph#evaluating-intermediate-steps) for more details on how to evaluate intermediate steps.
<video controls allowfullscreen="true" poster="../img/studio_datasets.jpg">
<source src="https://langgraph-docs-assets.pages.dev/studio_datasets.mp4" type="video/mp4">
</video>
@@ -335,7 +335,7 @@ const { thread, submit } = useStream({
});
```
Then you can push updates to the UI component by calling `ui.push()` / `push_ui_message()` with the same ID as the UI message you wish to update.
Then you can pushing updates to the UI component by calling `ui.push()` / `push_ui_message()` with the same ID as the UI message you wish to update.
=== "Python"
@@ -1,86 +1,24 @@
# Breakpoints
# How to add static breakpoints
[Breakpoints](../../concepts/breakpoints.md) pause graph execution at defined points and let you step through each stage. They use LangGraph's [**persistence layer**](../../concepts/persistence.md), which saves the graph state after each step.
!!! tip "Prerequisites"
With breakpoints, you can inspect the graph's state and node inputs at any point. Execution pauses **indefinitely** until you resume, as the checkpointer preserves the state.
This guide assumes familiarity with the following concepts:
## Set breakpoints
* [Breakpoints](../../concepts/breakpoints.md)
* [LangGraph Glossary](../../concepts/low_level.md)
=== "Compile time"
Human-in-the-loop (HIL) interactions are crucial for [agentic systems](../../concepts/agentic_concepts.md#human-in-the-loop). [Breakpoints](../../concepts/breakpoints.md) are a common HIL interaction pattern, allowing the graph to stop at specific steps and seek human approval before proceeding (e.g., for sensitive actions).
```python
# highlight-next-line
graph = graph_builder.compile( # (1)!
# highlight-next-line
interrupt_before=["node_a"], # (2)!
# highlight-next-line
interrupt_after=["node_b", "node_c"], # (3)!
)
```
Breakpoints are built on top of LangGraph [checkpoints](../../concepts/persistence.md#checkpoints), which save the graph's state after each node execution. Checkpoints are saved in [threads](../../concepts/persistence.md#threads) that preserve graph state and can be accessed after a graph has finished execution. This allows for graph execution to pause at specific points, await human approval, and then resume execution from the last checkpoint.
1. The breakpoints are set during `compile` time.
2. `interrupt_before` specifies the nodes where execution should pause before the node is executed.
3. `interrupt_after` specifies the nodes where execution should pause after the node is executed.
## Setup
=== "Run time"
### Code for your graph
=== "Python"
In this how-to we use a simple ReAct style hosted graph (you can see the full code for defining it [here](../../how-tos/human_in_the_loop/breakpoints.ipynb)). The important thing is that there are two nodes (one named `agent` that calls the LLM, and one named `action` that calls the tool), and a routing function from `agent` that determines whether to call `action` next or just end the graph run (the `action` node always calls the `agent` node after execution).
```python
# highlight-next-line
await client.runs.wait( # (1)!
thread_id,
assistant_id,
inputs=inputs,
# highlight-next-line
interrupt_before=["node_a"], # (2)!
# highlight-next-line
interrupt_after=["node_b", "node_c"] # (3)!
)
```
1. `client.runs.wait` is called with the `interrupt_before` and `interrupt_after` parameters. This is a run-time configuration and can be changed for every invocation.
2. `interrupt_before` specifies the nodes where execution should pause before the node is executed.
3. `interrupt_after` specifies the nodes where execution should pause after the node is executed.
=== "JavaScript"
```js
// highlight-next-line
await client.runs.wait( // (1)!
threadID,
assistantID,
{
input: input,
// highlight-next-line
interruptBefore: ["node_a"], // (2)!
// highlight-next-line
interruptAfter: ["node_b", "node_c"] // (3)!
}
)
```
1. `client.runs.wait` is called with the `interruptBefore` and `interruptAfter` parameters. This is a run-time configuration and can be changed for every invocation.
2. `interruptBefore` specifies the nodes where execution should pause before the node is executed.
3. `interruptAfter` specifies the nodes where execution should pause after the node is executed.
=== "cURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"interrupt_before\": [\"node_a\"],
\"interrupt_after\": [\"node_b\", \"node_c\"],
\"input\": <INPUT>
}"
```
!!! tip
This example shows how to add **static** breakpoints. See [this guide](../../how-tos/human_in_the_loop/breakpoints.ipynb) for more options for how to add breakpoints.
### SDK Initialization
=== "Python"
@@ -88,97 +26,130 @@ With breakpoints, you can inspect the graph's state and node inputs at any point
```python
from langgraph_sdk import get_client
client = get_client(url=<DEPLOYMENT_URL>)
# Using the graph deployed with the name "agent"
assistant_id = "agent"
# create a thread
thread = await client.threads.create()
thread_id = thread["thread_id"]
# Run the graph until the breakpoint
result = await client.runs.wait(
thread_id,
assistant_id,
input=inputs # (1)!
)
# Resume the graph
await client.runs.wait(
thread_id,
assistant_id,
input=None # (2)!
)
```
1. The graph is run until the first breakpoint is hit.
2. The graph is resumed by passing in `None` for the input. This will run the graph until the next breakpoint is hit.
=== "JavaScript"
=== "Javascript"
```js
import { Client } from "@langchain/langgraph-sdk";
const client = new Client({ apiUrl: <DEPLOYMENT_URL> });
// Using the graph deployed with the name "agent"
const assistantID = "agent";
// create a thread
const assistantId = "agent";
const thread = await client.threads.create();
const threadID = thread["thread_id"];
```
// Run the graph until the breakpoint
const result = await client.runs.wait(
threadID,
assistantID,
{ input: input } // (1)!
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{}'
```
## Adding a breakpoint
We now want to add a breakpoint in our graph run, which we will do before a tool is called.
We can do this by adding `interrupt_before=["action"]`, which tells us to interrupt before calling the action node.
We can do this either when compiling the graph or when kicking off a run.
Here we will do it when kicking of a run, if you would like to to do it at compile time you need to edit the python file where your graph is defined and add the `interrupt_before` parameter when you call `.compile`.
First let's access our hosted LangGraph instance through the SDK:
And, now let's compile it with a breakpoint before the tool node:
=== "Python"
```python
input = {"messages": [{"role": "user", "content": "what's the weather in sf"}]}
async for chunk in client.runs.stream(
thread["thread_id"],
assistant_id,
input=input,
stream_mode="updates",
interrupt_before=["action"],
):
print(f"Receiving new event of type: {chunk.event}...")
print(chunk.data)
print("\n\n")
```
=== "Javascript"
```js
const input = { messages: [{ role: "human", content: "what's the weather in sf" }] };
const streamResponse = client.runs.stream(
thread["thread_id"],
assistantId,
{
input: input,
streamMode: "updates",
interruptBefore: ["action"]
}
);
// Resume the graph
await client.runs.wait(
threadID,
assistantID,
{ input: null } // (2)!
);
for await (const chunk of streamResponse) {
console.log(`Receiving new event of type: ${chunk.event}...`);
console.log(chunk.data);
console.log("\n\n");
}
```
1. The graph is run until the first breakpoint is hit.
2. The graph is resumed by passing in `null` for the input. This will run the graph until the next breakpoint is hit.
=== "cURL"
Create a thread:
=== "CURL"
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads \
--header 'Content-Type: application/json' \
--data '{}'
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf\"}]},
\"interrupt_before\": [\"action\"],
\"stream_mode\": [
\"messages\"
]
}" | \
sed 's/\r$//' | \
awk '
/^event:/ {
if (data_content != "") {
print data_content "\n"
}
sub(/^event: /, "Receiving event of type: ", $0)
printf "%s...\n", $0
data_content = ""
}
/^data:/ {
sub(/^data: /, "", $0)
data_content = $0
}
END {
if (data_content != "") {
print data_content "\n"
}
}
'
```
Run the graph until the breakpoint:
Output:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\",
\"input\": <INPUT>
}"
```
Receiving new event of type: metadata...
{'run_id': '3b77ef83-687a-4840-8858-0371f91a92c3'}
Receiving new event of type: data...
{'agent': {'messages': [{'content': [{'id': 'toolu_01HwZqM1ptX6E15A5LAmyZTB', 'input': {'query': 'weather in san francisco'}, 'name': 'tavily_search_results_json', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-e5d17791-4d37-4ad2-815f-a0c4cba62585', 'example': False, 'tool_calls': [{'name': 'tavily_search_results_json', 'args': {'query': 'weather in san francisco'}, 'id': 'toolu_01HwZqM1ptX6E15A5LAmyZTB'}], 'invalid_tool_calls': []}]}}
Receiving new event of type: end...
None
Resume the graph:
```bash
curl --request POST \
--url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/wait \
--header 'Content-Type: application/json' \
--data "{
\"assistant_id\": \"agent\"
}"
```
## Learn more
- [**LangGraph breakpoints guide**](../../how-tos/human_in_the_loop/breakpoints.ipynb): learn more about adding breakpoints in LangGraph.

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