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384 Commits
Author SHA1 Message Date
Nuno Campos dfcaf97c73 langgraph 0.5.0rc0 2025-06-16 15:17:56 -07:00
Nuno Campos 63a0028372 langgraph-checkpoint 2.1.0 2025-06-16 14:58:50 -07:00
Nuno CamposandGitHub 1134017d07 Preparation for 0.5 release: langgraph-checkpoint (#5124)
Prepare langgraph-checkpoint for 0.5

- Given we have no upper bound on langgraph-checkpoint dep need to undo all changes in langgraph-checkpoint that might break previous versions of langgraph
2025-06-16 21:57:11 +00:00
Nuno CamposandGitHub 4fec8e9dec Preparation for 0.5 release (#5121) 2025-06-16 13:14:25 -07:00
Nuno Campos c137169325 Preparation for 0.5 release
- Update deprecation warnings to mention 0.5, no 1.0
- Add back type hint support for Runnable arg to add_node
2025-06-16 13:07:52 -07:00
Nuno CamposandGitHub 1e2672e63d Restore shallow checkpointer (#5105) 2025-06-16 11:23:27 -07:00
Nuno CamposandGitHub 06803ab683 Add migration for pending_sends (#5106) 2025-06-16 11:23:17 -07:00
hari-dhanushkodiandGitHub 3488ee47e0 chore: add docs for lgp deployment monitoring (#5104) 2025-06-16 10:21:42 -07:00
Nuno CamposandGitHub 289bdd0cea Introduce "tasks" and "checkpoints" stream modes (#5117) 2025-06-16 10:14:18 -07:00
Nuno Campos 417103066b Lint 2025-06-16 09:29:03 -07:00
Nuno Campos 25a59447c1 Introduce "tasks" and "checkpoints" stream modes
- These are split out of "debug" stream mode, which is now an alias for ["tasks", "checkpoints"]
2025-06-16 08:47:45 -07:00
Nuno Campos 21906d2b7b Add migration for pending_sends
- Checkpoints saved on older versions of langgraph will be compatible with langgraph 0.5 and 1.0
2025-06-13 17:42:14 -07:00
Nuno Campos 0cad7019cb Restore shallow checkpointer
- This should definitely be removed soon, but let's give people more time to update
2025-06-13 17:37:40 -07:00
Nuno CamposandGitHub 7e735672bf Restore compatibility with custom checkpointer classes created in prior versions (#5103) 2025-06-13 16:36:36 -07:00
Nuno Campos 5498893780 Restore compatibility with custom checkpointer classes created in prior versions
- Ensure existing custom checkpointer classes are compatible with new langgraph-checkpoint release
2025-06-13 16:29:55 -07:00
Nuno CamposandGitHub e80f47aa01 Revert removals of APIs that were slated for removal in 1.0 (#5101) 2025-06-13 16:09:20 -07:00
Nuno Campos a0b2f742a3 Revert "Remove UntrackedValue channel"
This reverts commit 05f3904d09.
2025-06-13 15:36:47 -07:00
William FHandGitHub b7973d65db fix: Update lockfile (#5102) 2025-06-13 14:53:40 -07:00
Nuno Campos 3fa3a586b5 Revert "Remove MessageGraph (#4875)"
This reverts commit a5e6223569.
2025-06-13 14:21:05 -07:00
William FHandGitHub 053b606b46 cli: 0.3.3 (#5100) 2025-06-13 13:15:26 -07:00
William FHandGitHub 4548a0ebe8 feat: Customizable Pip Installer (#5098)
Let you set "pip_installer": "pip" (or uv) to handle corner cases in install compatibilities
2025-06-13 10:35:28 -07:00
Sydney RunkleandGitHub 0171e9a323 fix(langgraph): remove deprecated output usage in favor of output_schema (#5095)
use output_schema
2025-06-13 12:34:39 -04:00
Sydney RunkleandGitHub c439cb0872 refactor(langgraph): Remove PregelNode's inheritance from Runnable (#5093)
remove Runnable inheritance for PregelNode
2025-06-13 10:17:42 -04:00
Nuno CamposandGitHub 2a4d7e8889 Remove support for node reading a single managed value (#5083) 2025-06-12 15:19:55 -07:00
Nuno Campos 7f3578e0f1 Remove support for node reading a single managed value
- This has never been used and is not useful or intended functionality
2025-06-12 15:11:19 -07:00
Lauren Hirata SinghandGitHub e2f96b5ae5 revert incident banner (#5082) 2025-06-12 17:24:36 -04:00
Lauren Hirata Singh 0d5f7e55bf revert incident banner 2025-06-12 17:10:22 -04:00
Lauren Hirata SinghandGitHub 9209f11187 incident banner (#5081) 2025-06-12 16:04:20 -04:00
Lauren Hirata SinghandGitHub bb1c5b8cdf Update docs/overrides/main.html 2025-06-12 15:57:14 -04:00
Nuno CamposandGitHub d6bb008ff4 PregelLoop: Simplify tick() method (#5080)
* PregelLoop: Simplify tick() method

- Split out superstep finish into separate after_tick() method
- Handle input in __enter__
- Remove unnecessary recursive shortcut
- Remove input sentinel objects

* Lint
2025-06-12 19:53:55 +00:00
Lauren Hirata Singh 6130e08fa6 incident banner 2025-06-12 15:52:36 -04:00
Sydney RunkleandGitHub 3ad061f0d7 serialize/deserialize pandas with pickle fallback (#5057) 2025-06-12 15:14:00 -04:00
Nuno CamposandGitHub 116b5d1cac Remove code paths no longer needed (#5079) 2025-06-12 11:47:10 -07:00
Nuno Campos 0aff02e180 Remove code paths no longer needed
- These were only used by the kafka scheduler
2025-06-12 11:25:20 -07:00
Nuno CamposandGitHub 074af5c122 Avoid saving checkpoints for subgraphs when checkpoint_during=False (#5051) 2025-06-11 11:11:02 -07:00
langchain-infraandGitHub 29ffaa0e0b docs: fix config section (#5066) 2025-06-11 13:23:33 -04:00
Sydney RunkleandGitHub 45cd4e1928 oss: auto apply labels to contributor issues (#5067)
auto apply labels
2025-06-11 17:19:49 +00:00
langchain-infraandGitHub 480271f753 docs: add mount prefix environment variable (#5060) 2025-06-11 11:20:19 -04:00
infra 66fdf60e47 docs: add mount prefix environment variable 2025-06-11 11:18:16 -04:00
infra 0894daf3fc docs: add mount prefix environment variable 2025-06-11 11:17:45 -04:00
Lauren Hirata SinghandGitHub 850c55d630 Revert "fix assistants overview link" (#5059) 2025-06-11 11:02:17 -04:00
Lauren Hirata SinghandGitHub c0d65ff409 Revert "fix assistants overview link (#5058)"
This reverts commit be7b60a722.
2025-06-11 10:58:52 -04:00
Lauren Hirata SinghandGitHub be7b60a722 fix assistants overview link (#5058) 2025-06-11 10:58:07 -04:00
Eugene YurtsevandGitHub d467ec6556 Remove gitmcp badge (#5055)
* Remove gitmcp badge

* xt

* x
2025-06-11 10:55:05 -04:00
b8683ab67a docs: Update subgraphs.md (#5052)
* Update subgraphs.md

The state while defining the Subgraph is updated. Also an edge connecting START to the call_model node in the subgraph was created.

* Update docs/docs/concepts/subgraphs.md

* Update docs/docs/concepts/subgraphs.md

---------

Co-authored-by: Eugene Yurtsev <eugene@langchain.dev>
2025-06-11 13:49:51 +00:00
William Fu-Hinthorn 6a9ca8d67e Update existing 2025-06-10 17:59:41 -07:00
William Fu-Hinthorn 3b98044f2f Add tests 2025-06-10 17:29:27 -07:00
Nuno Campos a4a8934bd3 Avoid saving checkpoints for subgraphs when checkpoint_during=False
- We can avoid saving checkpoints for successful subgraphs which do not request multi-turn memory
2025-06-10 17:25:05 -07:00
Nuno CamposandGitHub 470b9a4b97 Clean up PregelNode attributes (#5049) 2025-06-10 17:24:03 -07:00
Nuno Campos 516175780d Clean up things for Matt! 2025-06-10 16:14:15 -07:00
William FHandGitHub 571780f74c fix: header merging (#4926) 2025-06-10 14:44:34 -07:00
Emmanuel FerdmanandGitHub d719438307 fix: throw exception on multiple injections (#5033)
Throw exception on for multiple injections

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>
2025-06-10 16:54:01 -04:00
Simon FrankandGitHub 85c809a651 docs: fixed a wrong import in persistence docs (#5045) 2025-06-10 20:53:50 +00:00
Nuno CamposandGitHub 0441fd156f Add docs for checkpoint encryption (#5047)
docs: list CipherProtocol in API
2025-06-10 16:52:45 -04:00
Nuno CamposandGitHub 37b5d3886c Add library overview to AGENTS.md (#5044) 2025-06-10 10:08:55 -07:00
Nuno Campos b95267a3cc Refine dependency map 2025-06-10 10:06:08 -07:00
Nuno CamposandGitHub 2e33c520a5 Support numpy array serialization in JsonPlusSerializer (#5035)
* Handle numpy Fortran arrays

* Lint

* Lint

* Lint
2025-06-10 01:17:28 +00:00
Nuno CamposandGitHub 67b1dc602e Update ormsgpack (#5034)
* Update ormsgpack

- Now supports bytearray/memoryview passthrough

* Lint
2025-06-10 00:30:58 +00:00
Naohiro YoshidaandGitHub 1519b90414 Centralized CheckpointTuple creation into a shared function for checkpoint_postgres (#4970) 2025-06-09 18:40:17 +00:00
YkohandGitHub 0035ab9825 docs: Replace unsupported models with structured output-supported models (#3982) 2025-06-09 14:17:05 -04:00
c42cd57a32 chore: Update variable naming in postgres store (#4096)
Co-authored-by: William FH <13333726+hinthornw@users.noreply.github.com>
2025-06-09 17:54:06 +00:00
acc56e094a docs: add query params for Store semantic search (#4828)
Co-authored-by: William FH <13333726+hinthornw@users.noreply.github.com>
2025-06-09 17:47:50 +00:00
Yassin NouhandGitHub 6b30d4fd8f docs: enhance PostgresSaver connection requirements explanation (#4953)
docs: enhance PostgresSaver connection requirements explanation - Add detailed explanation of why autocommit=True and row_factory=dict_row are required - Include example of incorrect usage and resulting errors - Addresses issue #4937 about incomplete setup documentation
2025-06-09 17:12:44 +00:00
fcc37cd06b docs: update tutorial/rag/langgraph_adaptive_rag.ipynb (#2006)
- add some explanations of ipynb code in markdown cell.

Co-authored-by: Sydney Runkle <54324534+sydney-runkle@users.noreply.github.com>
2025-06-09 12:54:29 -04:00
William FHandGitHub c17ee1bf5a feat: [CLI] Add support for building deps with uv (#4995) 2025-06-09 08:57:29 -07:00
William FHandGitHub 88c603b00b fix: (sdk-js) Expand ToolMessage Type (#5015) 2025-06-09 08:22:35 -07:00
Sydney RunkleandGitHub c12f7cb2b9 github: support blank issues (help with v1 planning) (#4999)
blank issues
2025-06-09 13:52:14 +00:00
🤖Esteban Dalel RandGitHub 6d7d689578 docs: highlight changed lines in 3-add-memory.md (#4930) 2025-06-08 14:08:04 +00:00
LostInCode404andGitHub f1b7eca7fc docs: Update 1-build-basic-chatbot.md to add a section about END node (#4886)
Update `1-build-basic-chatbot.md` to add a section about `END` node
2025-06-08 13:51:17 +00:00
Michael LiandGitHub 93766a6df1 docs: fix assistants url at manage_assistants.md (#4993)
* docs: fix agent supervisor doc codes

* docs: fix assistants url at manage_assistants.md
2025-06-08 13:49:45 +00:00
Dionysis GlytsosandGitHub a9d4e0da29 docs: fix typos (#4992)
Fix typos
2025-06-08 13:46:41 +00:00
Sydney RunkleandGitHub 9105e60a34 graph: improve generics on StateGraph etc + move typing utils to private file (#4982) 2025-06-06 19:51:05 -04:00
Sydney RunkleandGitHub b735452153 deprecate input and output in favor of input_schema and output_schema (#4983) 2025-06-06 19:44:56 -04:00
Sydney Runkle 5920d8aa92 using StateT as default for InputT 2025-06-06 12:58:19 -04:00
533f5b3d6f docs: fix task description example in the agent supervisor tutorial (#4938)
* docs: fix agent supervisor doc codes

---------

Co-authored-by: vbarda <vadym@langchain.dev>
2025-06-06 13:41:41 +00:00
Asamu DavidandGitHub be5889a7df docs: add docs for image_distro cli option (#4974) 2025-06-05 23:11:47 +01:00
David Asamu 0bf268feca add docs for image_distro cli option 2025-06-05 17:23:05 +01:00
Sydney RunkleandGitHub 5e7566f4a3 lint: use pep 604 union syntax and pep 585 generic syntax (#4963)
* new union syntax

* fix test

* second round of conversions by injecting future annotations

* format + add top level makefile
2025-06-04 21:50:16 -04:00
Sydney RunkleandGitHub 494c8ef0d2 docs: remove references to StateGraph(dict) (#4964)
remove StateGraph(dict)
2025-06-04 21:29:19 -04:00
lc-arjunandGitHub 45e60ff9e1 fix: camel case to snake case conversion (#4966) 2025-06-04 17:31:12 -07:00
Nuno Campos 194c4c1d1c cli 0.2.12 2025-06-04 15:50:07 -07:00
1a76f6a92a 🐛 [CLI] Generate one --build-context argument for each dependency in the docker build command. (#4962)
* Generate one `--build-context` for each dependency in the `docker build` command.

* Try and fix test

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
2025-06-04 22:48:48 +00:00
Sydney RunkleandGitHub aedf974dfd docs: deploy from v0 branch for now (#4960)
only deploy docs on v0
2025-06-04 13:27:48 -04:00
Sydney RunkleandGitHub c0b6a85488 docs: format to allow for deploy (#4959)
formatting
2025-06-04 17:20:19 +00:00
Sydney RunkleandGitHub 9fde14079a docs: use retry_policy instead of retry in docs (#4958) 2025-06-04 17:12:13 +00:00
Sydney RunkleandGitHub 02f3944e88 rename retry -> retry_policy (#4957) 2025-06-04 14:55:06 +00:00
Nuno CamposandGitHub 1ea5812ed0 Fix step_timeout causing ParentCommand/GraphInterrupt exception to bubble up (#4950) 2025-06-03 17:32:46 -07:00
Nuno Campos 314115513c Fix step_timeout causing ParentCommand/GraphInterrupt exception to bubble up
- We should not re-raise exceptions in commit() as that is now called in a future done callback
- panic_or_proceed takes care of re-raising exceptions as needed anyway
2025-06-03 17:26:29 -07:00
Nuno Campos 161a1e3af6 Remove from ci matrix 2025-06-03 17:26:13 -07:00
Nuno Campos f8995f234c Remove scheduler-kafka library
Superseded by upcoming distributed runner
2025-06-03 17:25:17 -07:00
Nuno CamposandGitHub 5f1d76ba3b docs: fix a grammar issue in multiple files (#4935) 2025-06-03 17:04:20 -07:00
Asamu DavidandGitHub 13ebe1ad8c cli v0.2.11 release (#4941) 2025-06-04 01:00:06 +01:00
David Asamu ae2b766d0f bump version 2025-06-04 00:53:56 +01:00
Nuno CamposandGitHub b211d4e767 Make it possible to run test command without docker installed (#4948) 2025-06-03 16:29:14 -07:00
Nuno CamposandGitHub 0b609646d5 Fix async callback manager tag handling (#4949) 2025-06-03 16:23:22 -07:00
Nuno Campos 5ab5da767b Pass tags when configuring async callback manager 2025-06-03 16:17:17 -07:00
Nuno CamposandGitHub a534807ec9 Allow same-name channels and nodes in StateGraph (#4944) 2025-06-03 16:15:07 -07:00
Nuno Campos 89e827bd15 Make it possible to run test command without docker installed 2025-06-03 16:14:46 -07:00
Nuno CamposandGitHub d4018497a9 Fix ensure_config docstring (#4947) 2025-06-03 16:02:44 -07:00
Nuno Campos 7080eaa79e docs: fix ensure_config docstring 2025-06-03 15:56:41 -07:00
Nuno CamposandGitHub 9c6e8d5237 Fix duplicate article typos in docs (#4946) 2025-06-03 15:56:04 -07:00
langchain-infraandGitHub ae3c2e0b89 fix: use right deployment link (#4945) 2025-06-03 18:55:05 -04:00
Nuno Campos cd2847ee07 docs: fix double article typos 2025-06-03 15:53:19 -07:00
infra 7335b80586 fix: use right deployment link 2025-06-03 18:42:11 -04:00
Asamu DavidandGitHub 394ea1c12b Merge branch 'main' into david/06-03/update-cli-version 2025-06-03 23:40:10 +01:00
Nuno CamposandGitHub b00ea605e2 checkpoint-postgres: Use lock also for pipeline mode (#4942) 2025-06-03 15:30:04 -07:00
Nuno Campos bb990715f1 Allow same-name channels and nodes in StateGraph
- We no longer auto create a same-name channel for each node, so this limitation can now be lifted
2025-06-03 15:29:49 -07:00
Asamu DavidandGitHub fce7652b7c Merge branch 'main' into david/06-03/update-cli-version 2025-06-03 23:26:42 +01:00
langchain-infraandGitHub 8837b8534f fix: use right link (#4943) 2025-06-03 18:15:51 -04:00
infra 4473db6361 fix: use right link 2025-06-03 18:12:41 -04:00
Nuno Campos c31c940bbb checkpoint-postgres: Use lock also for pipeline mode 2025-06-03 14:59:56 -07:00
Asamu DavidandGitHub 5c18123bb7 cli v0.2.11 release
## Description 

bump cli version to 0.2.11
2025-06-03 21:37:25 +01:00
Asamu DavidandGitHub 7ba5636200 add support for image_distro in config file (#4871) 2025-06-03 20:59:06 +01:00
Sydney RunkleandGitHub 37c215b5a2 Improve type checking on graph init and invoke/stream (#4932) 2025-06-03 15:21:51 -04:00
Asamu DavidandGitHub f528f5ebd6 Merge branch 'main' into david/05-28/support-image-distro-config 2025-06-03 18:18:22 +01:00
Michael Li cd28bef155 docs: fix a grammar issue in multiple files 2025-06-04 01:20:29 +10:00
David DuongandGitHub 3a74514bc3 fix(sdk-js): uiMessageReducer should handle undefined metadata (#4931) 2025-06-03 15:21:25 +02:00
Tat Dat Duong 2b759a2a33 fix(sdk-js): uiMessageReducer should handle undefined metadata 2025-06-03 15:20:13 +02:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
723cff9001 build(deps): bump actions/setup-node from 3 to 4 (#4915)
Bumps [actions/setup-node](https://github.com/actions/setup-node) from 3 to 4.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2025-06-03 08:37:31 -04:00
lc-arjunandGitHub 7d27d108fc bump sdk (#4925) 2025-06-02 18:16:08 -07:00
Arjun Natarajan f4b480c4b8 bump sdk 2025-06-02 18:13:36 -07:00
lc-arjunandGitHub 8c560ef62a feat: support custom tracer when creating run in ts sdk (#4924) 2025-06-02 18:10:01 -07:00
David Asamu 1e324b681a update dockerfile generation logic, fix pip removal in wolfi 2025-06-03 01:43:59 +01:00
Arjun Natarajan 6002aebec5 maybe nees the full lint rewrite 2025-06-02 17:35:12 -07:00
Arjun Natarajan b438210a0d maybe fixes lint 2025-06-02 17:33:29 -07:00
Arjun Natarajan b908e96541 need to export it here too 2025-06-02 17:27:33 -07:00
Arjun Natarajan 70dc0323c1 i want this exported 2025-06-02 17:26:20 -07:00
Arjun Natarajan a75e40192f perhaps better typing 2025-06-02 17:18:59 -07:00
Arjun Natarajan 952017fbe2 feat: support custom tracer when creating run in ts sdk 2025-06-02 17:17:07 -07:00
Nuno CamposandGitHub 36bd88287f Fix makefile command file for dev server (#4922) 2025-06-02 16:41:59 -07:00
Nuno Campos 5e5840805e Fix makefile command file for dev server
- pidfile was always empty
2025-06-02 16:35:48 -07:00
Nuno CamposandGitHub 7828003958 Fix Command(graph=PARENT) when used together w checkpointer=True (#4921) 2025-06-02 16:18:52 -07:00
Nuno Campos e5e78e4192 Fix Command(graph=PARENT) when used together w checkpointer=True 2025-06-02 16:05:32 -07:00
William FHandGitHub e2b14a9499 feat: Add onRequest callback to JS SDK (#4919)
Add onRequest callback
2025-06-02 13:43:16 -07:00
Nuno CamposandGitHub 2563301f39 Remove unused deprecation decorator/warning (#4917) 2025-06-02 15:53:26 -04:00
David Asamu bbbadc3db9 regenerate schema + lint & format 2025-06-02 20:50:48 +01:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
b4cb4e72ab build(deps): bump actions/configure-pages from 4 to 5 (#4916)
Bumps [actions/configure-pages](https://github.com/actions/configure-pages) from 4 to 5.
- [Release notes](https://github.com/actions/configure-pages/releases)
- [Commits](https://github.com/actions/configure-pages/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/configure-pages
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2025-06-02 15:36:18 -04:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
7e45a0530b build(deps): bump actions/cache from 3 to 4 (#4913)
Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2025-06-02 15:17:21 -04:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
dd059fea3c build(deps): bump actions/checkout from 3 to 4 (#4912)
Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2025-06-02 15:17:04 -04:00
Michael LiandGitHub 871b1dccd8 docs: fix grammar issues in deployment_options.md and faq.md (#4905) 2025-06-02 15:04:03 -04:00
Daiki InoueandGitHub f8b5e05c47 docs: fix a typo (#4908) 2025-06-02 15:03:23 -04:00
Eugene YurtsevandGitHub 6cde3ee7a3 ci: add depandabot config for upgrading actions (#4911)
Depandabot config for suggesting to update old actions
2025-06-02 15:03:03 -04:00
Michael LiandGitHub d44581d754 docs: fix typos in langgraph_studio.md and low_level.md (#4909) 2025-06-02 17:49:04 +00:00
Michael LiandGitHub dc787b5aa6 docs: fix grammar issues in langgraph_data_plane.md and langgraph_platform.md (#4906)
* docs: fix grammar issues in langgraph_data_plane.md and langgraph_platform.md

* docs: further update the wording in langgraph_data_plane.md
2025-06-02 17:48:55 +00:00
Michael LiandGitHub 0d6af09187 docs: fix grammar issues in application_structure.md and assistants.md (#4904)
* docs: fix a grammar error in mcp.md

* docs: fix a grammar error in multi-agent.md

* docs: fix grammar issues in application_structure.md and assistants.md
2025-06-02 13:48:50 -04:00
Michael LiandGitHub 469576f966 docs: fix grammar issues in langgraph_self_hosted_control_plane.md and langgraph_server.md (#4907) 2025-06-02 17:47:16 +00:00
Michael LiandGitHub f00b994692 docs: fix incorrect word in memory.md (#4902) 2025-06-02 13:48:18 +00:00
Michael LiandGitHub 7d6243e6b4 docs: fix incorrect word in custom_docker.md (#4901) 2025-06-02 13:48:06 +00:00
Michael LiandGitHub 8fd50a50d4 docs: fix grammar errors in mcp.md and multi-agent.md (#4903)
* docs: fix a grammar error in mcp.md

* docs: fix a grammar error in multi-agent.md
2025-06-02 13:46:29 +00:00
Sydney RunkleandGitHub eaa1b37645 Require state_schema in StateGraph.__init__ (#4897) 2025-06-02 01:52:35 +00:00
David DuongandGitHub 21f762140a docs(sdk-js): improve resumability docs (#4899) 2025-06-02 02:10:16 +02:00
Tat Dat Duong 5973fcb0ae docs(sdk-js): improve resumability docs 2025-06-02 02:09:43 +02:00
David DuongandGitHub 624c688013 feat(sdk-js): add docs for reconnectOnMount, expose run metadata (#4898) 2025-06-02 01:53:46 +02:00
Tat Dat Duong d05b323b88 feat(sdk-js): add docs for reconnectOnMount, expose run metadata 2025-06-02 01:52:40 +02:00
Ikpreet S BabraandGitHub 765bc3b9e0 docs: Update 2-add-tools.md (#4896)
Typo in first sentence.
2025-06-01 10:47:35 +00:00
Nuno CamposandGitHub 78d3d8c802 Remove add_conditional_edge(..., then=) (#4893)
- This is redundant with deferred nodes, and not documented
2025-06-01 06:46:51 -04:00
Nuno CamposandGitHub 3b85c83d51 Avoid repeated runtime calls to get_type_hints (#4888) 2025-05-31 08:37:23 -07:00
Eugene YurtsevandGitHub 08f88ce8da docs: add gtm (#4887)
Add google tag manager
2025-05-30 21:49:22 -04:00
Nuno Campos d661d528b2 Avoid repeated runtime calls to get_type_hints
- Replace get_type_hints logic with much simpler implementation which only collects annotated keys (not the annotations themselves)
- Cache annotations in a WeakKeyDictionary
2025-05-30 16:30:53 -07:00
Sydney RunkleandGitHub 5cbf31e8a4 Remove non-state Graph (#4872) 2025-05-29 21:56:53 -04:00
a5e6223569 Remove MessageGraph (#4875)
Remove MessageGraph

Co-authored-by: Nuno Campos <nuno@langchain.dev>
2025-05-29 21:50:23 -04:00
Nuno CamposandSydney Runkle afb83d2201 Remove non-state Graph
- Not used in any examples/docs
2025-05-29 21:38:58 -04:00
David Asamu 1e8f5dd2b6 add warning when image distro is not configured as wolfi 2025-05-30 00:25:27 +01:00
David Asamu 574a9246a6 add unit tests for image_distro config 2025-05-29 23:30:27 +01:00
David Asamu c46f7a4c3d add support for image_distro in config file 2025-05-29 21:54:54 +01:00
langchain-infraandGitHub 8e82c7d1a0 docs: fix self hosted control plane concepts/docs (#4870) 2025-05-29 16:16:02 -04:00
infra 2066e4c018 docs: fix self hosted control plane concepts/docs 2025-05-29 13:10:16 -07:00
Sydney RunkleandGitHub f8fae30aa9 docs: fix pprint import (#4869) 2025-05-29 19:37:43 +00:00
Nuno CamposandGitHub 2615c7046c Remove UntrackedValue channel (#4868) 2025-05-29 12:14:36 -07:00
Nuno Campos 05f3904d09 Remove UntrackedValue channel
- This is incompatible with distributed execution modes, so needs to go
2025-05-29 12:07:51 -07:00
Nuno CamposandGitHub 583fe9fd84 Remove UntrackedValue channel (#4859) 2025-05-29 11:52:10 -07:00
Nuno Campos 0afc4ebda3 Flip default for checkpoint_during
- Now defaulting to False, ie. saving only the final checkpoint
- All features other than time travel into an intermediate step are supported by checkpoint_during=False so this is a better default for almost all use cases
2025-05-29 11:45:54 -07:00
Nuno CamposandGitHub d55cafad29 Remove Channel node builder (#4858) 2025-05-28 14:30:12 -07:00
Nuno Campos 1b961f68b9 Remove Channel node builder
- Replaced by NodeBuilder introduced in earlier PR
2025-05-28 14:14:47 -07:00
Nuno CamposandGitHub 045d6dfb82 Update managed value usage in local_read (#4854) 2025-05-28 14:05:14 -07:00
Nuno CamposandGitHub 26d5fccfa0 Modify stream mode messages and custom to respect subgraphs=False (#4843) 2025-05-28 14:05:03 -07:00
Nuno CamposandGitHub 76661f4c9c Remove Checkpoint.writes (#4822) 2025-05-28 14:04:45 -07:00
Nuno CamposandGitHub 9320bedd2a Remove Checkpoint.pending_sends (#4820) 2025-05-28 14:04:26 -07:00
Nuno CamposandGitHub 3737d886e7 Pregel: Add NodeBuilder class to replace Channel.subscribe_to (#4819) 2025-05-28 14:04:08 -07:00
Nuno CamposandGitHub 8386eaceab Remove dict subclasses used for values/updates stream chunks (#4816) 2025-05-28 14:03:40 -07:00
Nuno CamposandGitHub c32677c92d Remove old checkpoint test fixtures (#4814) 2025-05-28 14:03:12 -07:00
Nuno CamposandGitHub e384ccacaf Remove postgres shallow checkpointer (#4813) 2025-05-28 14:02:58 -07:00
Nuno CamposandGitHub dc95f95181 Remove ChannelsManager, ManagedValues are now static classes and never instantiated (#4812) 2025-05-28 14:02:43 -07:00
Nuno CamposandGitHub 2e4645ce61 Remove Context channel / managed value, Remove SharedValue (#4857) 2025-05-28 14:02:12 -07:00
Nuno CamposandGitHub efb282a197 Remove SchemaCoercionMapper (#4855) 2025-05-28 10:51:32 -07:00
Nuno Campos 89ce6ea2a8 Remove SchemaCoercionMapper 2025-05-28 10:42:43 -07:00
Nuno Campos 197b01e985 Update managed value usage in local_read 2025-05-28 10:40:20 -07:00
DHParkandGitHub 1e87312d1f Update graph-api.ipynb (#4824) 2025-05-28 13:39:22 +00:00
vksxandGitHub bcc6485f6c (docs) fix broken links (#4823) 2025-05-28 13:36:48 +00:00
Sydney RunkleandGitHub ce5f248e3b docs: fix typo (#4852)
minor fix
2025-05-28 13:35:17 +00:00
Sydney RunkleandGitHub 5602c29668 prebuilt: release 0.2.2 (#4851)
bump prebuilt
2025-05-28 13:33:39 +00:00
Nuno Campos bc404d14f6 Format 2025-05-27 16:07:54 -07:00
Sydney RunkleandGitHub 19ca6b416b fix: post_model_hook should inject state + store into tool calls if necessary (#4842) 2025-05-27 17:42:20 +00:00
Nuno Campos 936176eb21 Remove Checkpoint.writes
- This has been superseded by saving the individual writes of each task through put_writes()
- Removing this speeds up checkpoint operations as it was duplicating data saved elsewhere already
2025-05-25 19:06:46 -07:00
Nuno Campos 4e8fbe4525 Remove Checkpoint.pending_sends
- Instead store sends in a Topic channel, removing the need to fetch sends as writes against the parent checkpoint
- Remove deprecated/unused functions in langgraph-checkpoint (will require bumping min range for langgraph-checkpoint in langgraph lib)
- Implement migration of old pending sends in langgraph-checkpoint-postgres
- Ensure parent config of `checkpoint_during=False` checkpoints always points to checkpoints that were also saved
2025-05-25 19:06:02 -07:00
Nuno Campos 85522ec6a6 Pregel: Add NodeBuilder class to replace Channel.subscribe_to
- For now keeping Channel.subscribe_to given it was used in docs
2025-05-24 20:35:37 -07:00
Nuno Campos 0f8f5444bc Lint 2025-05-24 14:54:57 -07:00
Nuno Campos bc17c3522b Remove old checkpoint test fixtures
- Now all tests fully migrated to more recent sync_checkpointer and async_checkpointer fixtures for parametrising on checkpointer
- Use sync/async_store fixtures where tests used only in memory store
- Remove unused "should snapshot" check for older versions of langchain core no longer tested against
2025-05-24 14:27:13 -07:00
Nuno Campos 8c11c1155a Remove postgres shallow checkpointer
- This was deprecated, and superseded by checkpoint_during=False, which is available for all checkpointers
2025-05-24 12:39:50 -07:00
Nuno Campos 9c79d887a0 Remove ChannelsManager, ManagedValues are now static classes and never instantiated
- This keeps the existing API for accessing IsLastValue, RemainingSteps, but simplifies the internal implementation
- This lets us remove ChannelsManager completely, which no longer needs to be a context manager, now replaced w function channels_from_checkpoint
- Managed values are now simple functions that return a value given a PregelScratchpad, which will be easier to implement in distributed runner
2025-05-24 12:15:11 -07:00
Nuno Campos 889b40e7a8 Remove Context channel / managed value, Remove SharedValue
- Both have been deprecated long ago, have not been present in docs for quite a while
- Removing these lets us delete some code paths that were dedicated to this, easing work on distributed runner
2025-05-24 11:05:15 -07:00
Lauren Hirata SinghandGitHub 2553ae0b87 docs: Fix links (#4807) 2025-05-23 22:34:08 -04:00
Lauren Hirata Singh 3e4b69af3f Fix links 2025-05-23 22:30:43 -04:00
Lauren Hirata SinghandGitHub 0c6367c186 docs: fix link to examples page in readme.md (#4710) 2025-05-23 22:26:30 -04:00
Lauren Hirata SinghandGitHub 99860b5713 Update README.md 2025-05-23 22:12:18 -04:00
Lauren Hirata SinghandGitHub a69860baa6 Merge branch 'main' into fix-examples-link-readme 2025-05-23 22:08:32 -04:00
Lauren Hirata SinghandGitHub 6fc21046cd Update libs/langgraph/README.md 2025-05-23 22:06:43 -04:00
Lauren Hirata SinghandGitHub 754420e9a2 Update libs/langgraph/README.md 2025-05-23 22:03:39 -04:00
Lauren Hirata SinghandGitHub 15126ad827 Create overview.md 2025-05-23 22:02:14 -04:00
芥子观须弥andGitHub 6633173918 Fix: Ensure route function returns "b" to enable a → b → a loop (#4738)
fix: correct route function to return 'b' instead of 'a' when not terminating

This fixes a bug in the graph API how-to where the route function incorrectly returned 'a'. Now it correctly returns 'b' as intended.
2025-05-23 23:56:51 +00:00
Nuno Campos 0139e11ae5 0.4.7 2025-05-23 16:51:48 -07:00
Nuno CamposandGitHub bfbe55ab64 Fix stream mode not respected in subgraphs (#4806) 2025-05-23 16:47:01 -07:00
Nuno Campos 36478eb745 Fix stream mode not respected in subgraphs
- The default applied for subgraphs should be applied only when stream mode arg not passed in
2025-05-23 16:40:51 -07:00
Nuno CamposandGitHub 8fb91569b9 Add tests for stream_events when using imperative api (#4805) 2025-05-23 16:40:38 -07:00
Nuno Campos 9bf6728354 Try to make test less flaky 2025-05-23 16:32:51 -07:00
Nuno Campos 126a8f5bc6 Lock 2025-05-23 16:22:12 -07:00
Nuno Campos 9170f636d0 Lock 2025-05-23 16:14:15 -07:00
Nuno Campos 8207d3fefb Add tests for stream_events when using imperative api 2025-05-23 16:11:12 -07:00
Nuno Campos ade3f372a5 0.4.6 2025-05-23 15:24:07 -07:00
Nuno CamposandGitHub 3a55d1137b Fix exception handling for imperative tasks (#4802) 2025-05-23 15:23:15 -07:00
Nuno Campos bece43dc67 Fix 2025-05-23 15:06:18 -07:00
Nuno Campos 913b8d5e95 Lint 2025-05-23 14:32:45 -07:00
Andrew NguonlyandGitHub 29f6ea7f61 docs: Add warning about immutable deployment types (#4804)
* Add more details about database for deployment types. Clarify that deployment type cannot be changed.

* Add note about Development type disk capacity.
2025-05-23 14:04:46 -07:00
Nuno Campos 3c0d9346c2 Add sync test 2025-05-23 13:51:13 -07:00
Nuno Campos 0ebb78d9b2 Fix 2025-05-23 13:50:11 -07:00
Nuno Campos 70153ceba2 Fix exception handling for imperative tasks
- These exceptions should not be re-raised at end of tick, given they're handled explicitly by the developer in their entrypoint
2025-05-23 12:26:27 -07:00
Sydney RunkleandGitHub a9c87ed8b6 prebuilt: release 0.2.1 (#4801)
lockfile and version updates
2025-05-23 18:07:24 +00:00
Sydney RunkleandGitHub 837fe59e24 prebuilt: support provider builtin tools in create_react_agent (#4800) 2025-05-23 13:58:53 -04:00
Andrew NguonlyandGitHub 596a26461c docs: Add note about Enterprise plan in banner for all self-hosted deployment options. (#4797)
Add note about Enterprise plan in banner for all self-hosted deployment options.
2025-05-22 18:38:06 -07:00
Sydney RunkleandGitHub aff3be03dc prebuilt: release 0.2.0 (#4793) 2025-05-22 17:54:58 +00:00
David DuongandGitHub 1000b81eca feat(langgraph): push_messages should directly write to the state (#4791) 2025-05-22 19:41:51 +02:00
Tat Dat Duong 10c6ed7320 Code review 2025-05-22 19:35:44 +02:00
Tat Dat Duong 28e0e7f3ae feat(langgraph): push_messages should directly write to the state 2025-05-22 19:35:15 +02:00
Sydney RunkleandGitHub 87fa661ac0 temp: remove ToolInterruptNode code (#4792)
remove tool node specific code for post_model_hook release
2025-05-22 13:28:59 -04:00
David DuongandGitHub 3189b8fcda feat(sdk-js): Add rejoining of streams (#4744) 2025-05-22 19:19:07 +02:00
Tat Dat Duong 74b18acfc2 Bump to 0.0.78 2025-05-22 19:08:39 +02:00
Tat Dat Duong 1ff5e2966b Add joinStream method 2025-05-22 19:07:01 +02:00
Diwakar GuptaandGitHub 1ba2b3fba9 Merge branch 'main' into fix-examples-link-readme 2025-05-22 22:34:22 +05:30
Tat Dat Duong 102b1f63f3 Fix assumption on sessionStorage 2025-05-22 19:01:14 +02:00
Tat Dat Duong 74dbccd408 Rename to reconnectOnMount 2025-05-22 18:42:38 +02:00
Tat Dat Duong f5a2410ddc Make useStream more hackable 2025-05-22 18:38:09 +02:00
Sydney RunkleandGitHub 4cade428d8 docs: adding interactive graph widget (#4785) 2025-05-22 12:23:43 -04:00
Tat Dat Duong 5823a659fc use sessionStorage instead 2025-05-22 18:11:38 +02:00
Tat Dat Duong f2c32727e8 Fix invalid states 2025-05-22 18:09:16 +02:00
Tat Dat Duong 9d71d941fd resumable 2025-05-22 17:45:52 +02:00
Tat Dat Duong 0db618ae75 Further cleanup 2025-05-22 17:45:52 +02:00
Tat Dat Duong 49746ab3a3 Code cleanup 2025-05-22 17:45:51 +02:00
Tat Dat Duong 5c7ef9a4fc Fix race condition 2025-05-22 17:45:51 +02:00
Tat Dat Duong 62e688bb37 Add rejoining of streams 2025-05-22 17:45:51 +02:00
Sydney RunkleandGitHub 42eff39cd0 docs: fix top nav (#4783)
fix top nav
2025-05-21 19:30:13 -04:00
David DuongandGitHub 39172f2ff9 feat(graph): add push_message method to push manually to messages / message-tuple stream (#4722) 2025-05-22 01:01:48 +02:00
Nuno CamposandGitHub 0202c83e73 Apply same condition for stream_mode=values in suppress interrupt (#4782) 2025-05-21 15:55:55 -07:00
Tat Dat Duong ab924c72fa Add message state test 2025-05-22 00:49:23 +02:00
Nuno Campos 1833889316 Apply same condition for stream_mode=values in suppress interrupt 2025-05-21 15:23:27 -07:00
Tat Dat Duong 7a6bdb3441 Remove redundant cast 2025-05-22 00:23:26 +02:00
David DuongandGitHub ea7f45dba7 feat(sdk-py): resumable streams (#4765) 2025-05-22 00:19:43 +02:00
Tat Dat Duong d2875cc576 feat(graph): add push_message method to push manually to messages / message-tuple stream 2025-05-22 00:18:12 +02:00
Tat Dat Duong e77197a00f Here as well 2025-05-22 00:13:22 +02:00
Tat Dat Duong 30e6ea7aed Last uv.lock? 2025-05-22 00:13:10 +02:00
Tat Dat Duong 461afe0aa6 Again? 2025-05-22 00:12:40 +02:00
Tat Dat Duong 92f8dde61e uv.lock? 2025-05-22 00:07:56 +02:00
Tat Dat Duong f4f7a79907 Bump to 0.1.70 2025-05-22 00:03:48 +02:00
Tat Dat Duong 9c1267af1a Import re 2025-05-22 00:03:41 +02:00
Tat Dat Duong e0a4420b8e feat(sdk-py): resumable streams 2025-05-22 00:03:41 +02:00
Andrew NguonlyandGitHub 94a8067c12 docs: Remove outdated docs regarding graph construction (#4779)
Remove outdated docs regarding graph construction.
2025-05-21 12:21:32 -07:00
Lauren Hirata SinghandGitHub 957db60d89 docs: fix (#4778) 2025-05-21 14:48:36 -04:00
Lauren Hirata Singh a17efb1120 fix 2025-05-21 14:47:55 -04:00
Eugene YurtsevandGitHub d4b428de62 docs: improved llms.txt (#4777)
Improved llms.txt
2025-05-21 14:40:01 -04:00
Eugene YurtsevandGitHub fd0b70eb05 docs: improve llms.txt to generate title and description based on content (#4775)
Update llms.txt based on content
2025-05-21 14:39:13 -04:00
Lauren Hirata SinghandGitHub b8daf323ac docs: fix redirect (#4776) 2025-05-21 14:35:04 -04:00
Lauren Hirata Singh 2d3a3de1ce docs: fix redirect 2025-05-21 14:34:02 -04:00
Nuno CamposandGitHub 96e2f68b2d Only emit stream values chunks when the output channels have changed (#4774) 2025-05-21 13:09:42 -04:00
Eugene YurtsevandGitHub 364508ff20 docs: Add script to generate llms-txt links from yaml (#4771)
A first pass at the script to fix the immediate issue. Will follow up with a few additional improvements.
2025-05-21 11:54:23 -04:00
Eugene YurtsevandGitHub fa1af5c364 docs: replace llms.txt with updated links (#4772)
This is a stop gap solution to fix broken links.

This PR will be followed up with a better llms.txt file
2025-05-21 11:53:26 -04:00
le-codeur-rapideandGitHub 8ec29b4df7 docs: fix example pregel reducer (#4740) 2025-05-21 10:38:29 -04:00
Sydney RunkleandGitHub 06607e08ea prebuilts hitl: fix branching logic + add structural snapshot tests (#4767) 2025-05-21 09:29:59 -04:00
Lauren Hirata SinghandGitHub 0a8f54ca4a docs: add redirect (#4762) 2025-05-20 15:06:34 -04:00
Lauren Hirata Singh 9d41d439cc docs: add redirect 2025-05-20 14:52:02 -04:00
Diwakar GuptaandGitHub 364fdf5dfe Merge branch 'main' into fix-examples-link-readme 2025-05-21 00:00:09 +05:30
Leeroy BrunandGitHub ae5c01fbab docs: typo in npx command to install LangGraph CLI (#4761) 2025-05-20 17:08:02 +00:00
Sydney RunkleandGitHub bd52b1faa1 docs: deferred nodes (#4759) 2025-05-20 13:07:11 -04:00
Stefano LottiniandGitHub 4a04ca7268 [docs] Revise pip-install packages for PostgresSaver in "how-to/Persistence" notebook (#4752)
revise pip-install packages for PostgresSaver usage in how-to page
2025-05-20 15:46:39 +00:00
Yazan JianandGitHub 23b868da00 docs: fix async usage example from await .invoke() to `await .ainvo… (#4758)
docs: fix async usage example from `await .invoke()` to `await .ainvoke()`
2025-05-20 15:45:47 +00:00
David DuongandGitHub 51bfd16460 feat(sdk-js): add stream_resumable flag, that marks the stream as resumable (#4757) 2025-05-20 14:16:39 +02:00
Tat Dat Duong 325d9e3134 Bump to 0.0.77 2025-05-20 14:14:48 +02:00
Tat Dat Duong b052ebf984 feat(sdk-js): add stream_resumable flag, that marks the stream as resumable 2025-05-20 14:13:47 +02:00
Sydney RunkleandGitHub 1e938a692f docs: node caching (#4749) 2025-05-19 15:49:31 -04:00
Nuno CamposandGitHub 46a9d3159d Remove local_write utility (#4751)
- The validation isn't worth the cost of having to pass list of nodes to task config
2025-05-19 15:49:17 -04:00
Nuno CamposandGitHub d825e39df9 Print output for cached @task functions (#4750) 2025-05-19 11:42:16 -07:00
Nuno Campos 53a1e7c9de Print output for cached @task functions 2025-05-19 11:35:51 -07:00
Sydney RunkleandGitHub 7bd8616b1e feature: Implement post_model_hook and HumanInterruptNode (#4583) 2025-05-19 14:07:42 -04:00
William FHandGitHub 95f92069a7 sqlite: Add test for search with list filters (#4747) 2025-05-18 23:50:27 -07:00
William FHandGitHub 6b28319796 sqlite: update list_namespaces with max_depth (#4746)
sqlite: update on conflict
2025-05-18 23:27:06 -07:00
Didier DurandandGitHub 2ddf61201c docs: Fixing some typos (#4741) 2025-05-18 22:36:37 -07:00
Didier DurandandGitHub 9453ee08dc docs: Fix a few spelling mistakes (#4742)
Fixing some typos
2025-05-18 22:35:54 -07:00
William Fu-Hinthorn 15bafc54c8 Update lockfile 2025-05-17 21:55:46 -07:00
William FHandGitHub 725dd40fa7 Release sqlite store (#4737) 2025-05-17 21:49:03 -07:00
William FHandGitHub c2a1b3af07 docs: Clean up adjective use in readme (#4734) 2025-05-17 21:43:14 -07:00
William FHandGitHub 025b634d98 SqliteStore (#3608) 2025-05-17 21:40:19 -07:00
Diwakar GuptaandGitHub fe5d303ccd Merge branch 'main' into fix-examples-link-readme 2025-05-17 13:56:41 +05:30
Brace SproulandGitHub 8edb3e7b65 release(sdk-js): 0.0.76 (#4733) 2025-05-16 14:59:50 -07:00
bracesproul c21cf9fc1d release(sdk-js): 0.0.76 2025-05-16 14:56:56 -07:00
David DuongandGitHub cb95393c67 fix: Allow users to config whether or not stream subgraphs (#4732) 2025-05-16 23:51:25 +02:00
bracesproul bb1edb4415 cr 2025-05-16 14:49:57 -07:00
bracesproul 6f1db4c60a fix: Allow users to config whether or not stream subgraphs 2025-05-16 14:49:28 -07:00
Vadym BardaandGitHub 119a03bb00 ci: fix benchmark command (#4729) 2025-05-16 12:53:46 -07:00
Vadym BardaandGitHub 09138048bc docs: document tuples in streaming guides (#4690) 2025-05-16 14:59:51 -04:00
David DuongandGitHub adc89440a6 feat(sdk-js): expose ID for SSE events, update joinStream (#4547) 2025-05-16 20:53:39 +02:00
Tat Dat Duong c65919b3b2 Remove onResponse 2025-05-16 11:52:07 -07:00
Tat Dat Duong 0fa2b6c600 Bump to 0.0.75 2025-05-16 11:50:35 -07:00
Tat Dat Duong 9b2071b103 Fix tests 2025-05-16 11:50:09 -07:00
Tat Dat Duong b3f13ee904 Add onRunCreated callback 2025-05-16 11:43:40 -07:00
Tat Dat Duong bf239a06e1 Add callback for response object to get headers 2025-05-16 11:43:39 -07:00
Tat Dat Duong cc25539018 feat(sdk-js): expose ID for SSE events, update joinStream 2025-05-16 11:43:39 -07:00
Lauren Hirata SinghandGitHub 654096625a docs: add redirect (#4727) 2025-05-16 11:28:45 -07:00
David DuongandGitHub 3ea1141d55 feat(sdk-js): switch from jest to vitest, add useStream FE tests (#4726) 2025-05-16 19:55:30 +02:00
Tat Dat Duong e9d1f5508a package.json 2025-05-16 10:53:06 -07:00
Tat Dat Duong c6157d90dd feat(sdk-js): switch from jest to vitest, add useStream FE tests 2025-05-16 10:48:11 -07:00
Lauren Hirata Singh f37a228b58 add redirect 2025-05-16 10:28:51 -07:00
Sydney RunkleandGitHub d34299ac39 ci: fix issue with cache in integration tests (#4725) 2025-05-16 16:49:29 +00:00
Diwakar GuptaandGitHub c9fa11ae7d Merge branch 'langchain-ai:main' into fix-examples-link-readme 2025-05-16 16:32:53 +05:30
Sydney RunkleandGitHub 228a08b966 ci: migrate to uv! (#4698)
* Migrate to `uv`
* Format `pyproject.toml` files properly
* Remove upper bounds on dependencies, and bounds on dev dependencies
(we should be using latest)
* Move to hatch for packaing

In the future we should:
* Set up dependabot / automate lockfile updates and tests
* Add tests for min compatible versions (I'll do this right after merge)
* Use dynamic versioning
* Bump `pydantic` to v2.11.4 in the lockfile, we have some tests failing
2025-05-15 17:39:14 -07:00
Lauren Hirata SinghandGitHub 217795eb72 docs: fix broken img (#4716) 2025-05-15 13:37:40 -07:00
Lauren Hirata Singh e873df678b fix broken img 2025-05-15 13:33:36 -07:00
Hussein AkbarzadehandGitHub 2b603a6ab0 Update sql-agent.ipynb (#4702)
On line 586, the check_query function should use
check_query_system_prompt. Instead, small mistake it is using the
generate_query_system_prompt prompt which is obviously incorrect.
2025-05-15 20:26:36 +00:00
Lauren Hirata SinghandGitHub f60a06441b docs: fix nit (#4714) 2025-05-15 12:50:32 -07:00
Lauren Hirata Singh db5e956dc6 docs: fix nit 2025-05-15 12:48:49 -07:00
Yagnesh M. BhadiyadraandGitHub cacae7bd1f fix(docs): Correctify the Pass or Fail condition in the Graph API example. (#4712) 2025-05-15 19:37:36 +00:00
Vadym BardaandGitHub 60df867872 docs: update MCP example (#4713) 2025-05-15 14:59:35 -04:00
Diw 988805d60b fix link to examples page in readme.md 2025-05-15 23:11:17 +05:30
Vadym BardaandGitHub 6fb2a93212 langgraph: release 0.4.5 (#4709) 2025-05-15 13:33:02 -04:00
Vadym BardaandGitHub 3f8944c1fc checkpoint: release 2.0.26 (#4708) 2025-05-15 13:28:10 -04:00
Nuno CamposandGitHub e79f3ceedc Improve how we match cached writes for async imperative tasks (#4691)
- remove match_cached_writes from PregelRunner args (now called by
PregelLoop internally)
- this will be helpful when implementing distributed runner classes
2025-05-15 10:21:27 -07:00
Vadym BardaandGitHub a64414c87c langgraph: release 0.4.4 (#4704) 2025-05-15 11:20:59 -04:00
Nuno CamposandGitHub c9d85a22ec langgraph: fix drawing graph with __root__ channel (#4695) 2025-05-15 07:55:45 -07:00
PabloandGitHub 983243333c Missing space in langgraph_server.md (#4697)
Missing space
2025-05-15 08:39:01 -04:00
vbarda 3a1c02ff33 update for consistency 2025-05-15 08:38:25 -04:00
vbarda 5ab2aa79bb lint again 2025-05-14 22:11:09 -04:00
vbarda c33e64daa6 use list 2025-05-14 22:03:40 -04:00
vbarda 4ffae6065f lint + update 2025-05-14 22:01:54 -04:00
vbarda 54ddde9d4c update 2025-05-14 21:30:22 -04:00
vbarda 60c41ce69e update 2025-05-14 21:14:49 -04:00
vbarda efd33d860f update 2025-05-14 21:03:47 -04:00
vbarda 254a38560e langgraph: fix drawing graph with __root__ channel 2025-05-14 20:42:30 -04:00
Nuno CamposandGitHub 3487f4eba5 langgraph: fix graph drawing for self-loops (#4688)
Fixes #4685
2025-05-14 11:44:44 -07:00
Nuno Campos 3bdb7d09be Lint 2025-05-14 11:30:49 -07:00
Nuno Campos 3acf63a918 Lint 2025-05-14 11:29:26 -07:00
Nuno Campos f51e5e2bd7 Improve how we match cached writes for async imperative tasks
- remove match_cached_writes from PregelRunner args (now called by PregelLoop internally)
- this will be helpful when implementing distributed runner classes
2025-05-14 11:25:49 -07:00
lc-arjunandGitHub c1a4d77bd4 fix: update langgraph cli to include js and update template app description (#4687) 2025-05-14 07:04:04 -07:00
6e3eb6370e Update docs/docs/tutorials/langgraph-platform/local-server.md
Co-authored-by: William FH <13333726+hinthornw@users.noreply.github.com>
2025-05-14 06:56:36 -07:00
Arjun Natarajan ab0fa9dc77 use npx to install cli instead 2025-05-14 09:49:42 -04:00
vbarda b20130d4e4 langgraph: fix graph drawing for self-loops 2025-05-14 09:46:32 -04:00
Arjun Natarajan 5f821cf584 fix: update langgraph cli to include js and update template app description 2025-05-14 09:41:37 -04:00
lc-arjunandGitHub c7691081d1 fix(docs): template app names (#4682) 2025-05-13 15:25:39 -07:00
Arjun Natarajan 2ff2972b67 oops js is js not python 2025-05-13 18:21:20 -04:00
Arjun Natarajan 873873e640 fix(docs): template app names 2025-05-13 18:17:42 -04:00
lc-arjunandGitHub fba0d6f96c chore(docs): reformat troubleshooting section and remove faqs page (#4681) 2025-05-13 15:04:19 -07:00
Arjun Natarajan 8bc509578b fix formatting 2025-05-13 17:59:51 -04:00
Arjun Natarajan 72d085d9f8 reformat troubleshooting section and remove faqs page 2025-05-13 17:54:51 -04:00
ccurmeandGitHub 940c2b0e74 docs: add chat model tabs to models guide (#4679) 2025-05-13 17:50:26 -04:00
lc-arjunandGitHub e705ea1961 feat(docs): studio nits (#4680) 2025-05-13 13:53:02 -07:00
Arjun Natarajan 18e8d334ed nits to threads 2025-05-13 16:48:07 -04:00
Arjun Natarajan 392606f5f7 feat(docs): studio nits 2025-05-13 16:29:10 -04:00
lc-arjunandGitHub cff2be48c9 feat(docs): further improvements for studio guides docs (#4677) 2025-05-13 12:59:47 -07:00
Arjun Natarajan c63cc173b2 added page for running application 2025-05-13 15:54:46 -04:00
Lauren Hirata SinghandGitHub 2b8c295898 docs: Simplify LGP quickstarts (#4678)
- Change quickstarts to use `new-langgraph-project`, which doesn't
require API keys for Anthropic, Tavily, etc.
2025-05-13 11:47:48 -07:00
Arjun Natarajan 03c5547e34 update dataset page 2025-05-13 14:46:26 -04:00
Lauren Hirata Singh a7faae6b54 nit 2025-05-13 11:40:30 -07:00
Lauren Hirata Singh 1d3f19763d add js sample code back 2025-05-13 11:36:45 -07:00
Lauren Hirata Singh 16d5ce364c nit 2025-05-13 11:24:19 -07:00
Lauren Hirata Singh ce235d0eb1 edits based on feedback 2025-05-13 11:20:19 -07:00
Arjun Natarajan 2e17857ca7 verb tense 2025-05-13 13:57:18 -04:00
Arjun Natarajan 304a59a1c9 feat(docs): further improvements for studio guides docs 2025-05-13 13:52:14 -04:00
Lauren Hirata Singh 063a0e027b docs: Simplify LGP quickstarts 2025-05-13 10:51:48 -07:00
ccurmeandGitHub 4534d174f4 docs: move async guide into graph-api (#4676) 2025-05-13 13:30:23 -04:00
Lauren Hirata SinghandGitHub 8d9a99bb99 docs: address feedback (#4674) 2025-05-13 10:08:42 -07:00
Lauren Hirata Singh ee528f7d49 nit 2025-05-13 10:04:33 -07:00
Lauren Hirata Singh 9d3ea6fd7e docs: address feedback 2025-05-13 09:51:50 -07:00
Vadym BardaandGitHub d256469f37 docs: fix warnings in links (#4672) 2025-05-13 11:38:54 -04:00
William Fu-Hinthorn 138f0eb003 fix: (docs) Rm unused api keys 2025-05-13 08:07:13 -07:00
Lauren Hirata SinghandGitHub 1acad37bee docs: LGP nits (#4670) 2025-05-12 20:59:59 -07:00
Lauren Hirata Singh 0a7a7fb71f docs: LGP nits 2025-05-12 20:57:29 -07:00
lc-arjunandGitHub b6f3e25ef7 fix: use absolute links for sdk reference (#4669) 2025-05-12 19:44:36 -07:00
Arjun Natarajan 70a10b0b57 fix: use absolute links for sdk reference 2025-05-12 22:39:05 -04:00
374 changed files with 40494 additions and 52343 deletions
+1 -1
View File
@@ -1,6 +1,6 @@
name: "\U0001F41B Bug Report"
description: Report a bug in LangGraph. To report a security issue, please instead use the security option below. For questions, please use the GitHub Discussions.
labels: ["02 Bug Report"]
labels: [pending,bug]
body:
- type: markdown
attributes:
+1 -1
View File
@@ -1,4 +1,4 @@
blank_issues_enabled: false
blank_issues_enabled: true
version: 2.1
contact_links:
- name: 🤔 Question or Problem
+1 -1
View File
@@ -1,7 +1,7 @@
name: Documentation
description: Report an issue related to the LangGraph documentation.
title: "DOC: <Please write a comprehensive title after the 'DOC: ' prefix>"
labels: [03 - Documentation]
labels: [documentation]
body:
- type: textarea
-88
View File
@@ -1,88 +0,0 @@
# 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') }}
+11
View File
@@ -0,0 +1,11 @@
# Please see the documentation for all configuration options:
# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
# and
# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
version: 2
updates:
- package-ecosystem: "github-actions"
directory: "/"
schedule:
interval: "weekly"
+5 -7
View File
@@ -3,9 +3,6 @@ name: CLI integration test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -25,13 +22,14 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
filter: "libs/cli/**"
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
- name: Set up Python ${{ matrix.python-version }}
if: steps.changed-files.outputs.all
uses: "./.github/actions/poetry_setup"
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ matrix.python-version }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: integration-test-cli
enable-cache: true
cache-suffix: "cli-integration-test"
ignore-nothing-to-cache: true
- name: Setup env
if: steps.changed-files.outputs.all
working-directory: libs/cli/examples
+10 -35
View File
@@ -9,8 +9,6 @@ on:
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
# This env var allows us to get inline annotations when ruff has complaints.
RUFF_OUTPUT_FORMAT: github
@@ -36,42 +34,28 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
filter: "${{ inputs.working-directory }}/**"
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
- name: Set up Python ${{ matrix.python-version }}
if: steps.changed-files.outputs.all
uses: "./.github/actions/poetry_setup"
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ matrix.python-version }}
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: ${{ inputs.working-directory }}
run: poetry check
enable-cache: true
cache-suffix: lint-${{ inputs.working-directory }}
- 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: poetry install --with dev
run: uv sync --frozen --group dev
- name: Get .mypy_cache to speed up mypy
if: steps.changed-files.outputs.all
uses: actions/cache@v3
uses: actions/cache@v4
env:
SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
with:
path: |
${{ inputs.working-directory }}/.mypy_cache
key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/poetry.lock', inputs.working-directory)) }}
key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
- name: Analysing package code with our lint
if: steps.changed-files.outputs.all
@@ -86,27 +70,18 @@ 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: |
poetry install --with dev
run: uv sync --group dev
- name: Get .mypy_cache_test to speed up mypy
if: steps.changed-files.outputs.all
uses: actions/cache@v3
uses: actions/cache@v4
env:
SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
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}/poetry.lock', inputs.working-directory)) }}
key: mypy-test-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
- name: Analysing tests with our lint
if: steps.changed-files.outputs.all
+6 -11
View File
@@ -8,9 +8,6 @@ on:
type: string
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -26,12 +23,12 @@ jobs:
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ matrix.python-version }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: test-${{ inputs.working-directory }}
enable-cache: true
cache-suffix: test-${{ inputs.working-directory }}
- name: Login to Docker Hub
uses: docker/login-action@v3
if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -42,14 +39,12 @@ jobs:
- name: Install dependencies
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
poetry install --with dev
run: uv sync --frozen --group dev
- name: Run tests
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
make test
run: make test
- name: Ensure the tests did not create any additional files
shell: bash
+6 -11
View File
@@ -3,9 +3,6 @@ name: test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
@@ -24,12 +21,12 @@ jobs:
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ matrix.python-version }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: test-langgraph
enable-cache: true
cache-suffix: "test-langgraph"
- name: Login to Docker Hub
uses: docker/login-action@v3
if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -39,13 +36,11 @@ jobs:
- name: Install dependencies
shell: bash
run: |
poetry install --with dev
run: uv sync --frozen --group 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
+7 -8
View File
@@ -9,7 +9,6 @@ on:
description: "From which folder this pipeline executes"
env:
POETRY_VERSION: "2.1.2"
PYTHON_VERSION: "3.10"
jobs:
@@ -24,12 +23,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python $${ env.PYTHON_VERSION }}
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ env.PYTHON_VERSION }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
enable-cache: true
cache-suffix: "release"
# We want to keep this build stage *separate* from the release stage,
# so that there's no sharing of permissions between them.
@@ -43,7 +42,7 @@ jobs:
# > from the publish job.
# https://github.com/pypa/gh-action-pypi-publish#non-goals
- name: Build project for distribution
run: poetry build
run: uv build
working-directory: ${{ inputs.working-directory }}
- name: Upload build
@@ -57,8 +56,8 @@ jobs:
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
echo pkg-name="$(poetry version | cut -d ' ' -f 1)" >> $GITHUB_OUTPUT
echo version="$(poetry version --short)" >> $GITHUB_OUTPUT
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)
publish:
needs:
@@ -1,57 +0,0 @@
name: test
on:
workflow_call:
env:
POETRY_VERSION: "2.1.2"
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
python-version:
- "3.11"
- "3.12"
defaults:
run:
working-directory: libs/scheduler-kafka
name: "test #${{ matrix.python-version }}"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
with:
python-version: ${{ matrix.python-version }}
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 }}
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_RO_TOKEN }}
- name: Install dependencies
shell: bash
run: |
poetry install --with dev
- name: Run tests
shell: bash
run: |
make test
- name: Ensure the tests did not create any additional files
shell: bash
run: |
set -eu
STATUS="$(git status)"
echo "$STATUS"
# grep will exit non-zero if the target message isn't found,
# and `set -e` above will cause the step to fail.
echo "$STATUS" | grep 'nothing to commit, working tree clean'
+5 -8
View File
@@ -7,9 +7,6 @@ on:
paths:
- "libs/**"
env:
POETRY_VERSION: "2.1.2"
jobs:
benchmark:
runs-on: ubuntu-latest
@@ -19,14 +16,14 @@ jobs:
steps:
- uses: actions/checkout@v4
- run: SHA=$(git rev-parse HEAD) && echo "SHA=$SHA" >> $GITHUB_ENV
- name: Set up Python 3.11 + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python 3.11
uses: astral-sh/setup-uv@v6
with:
python-version: "3.11"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: bench
enable-cache: true
cache-suffix: "bench"
- name: Install dependencies
run: poetry install --with dev
run: uv sync --group dev
- name: Run benchmarks
run: OUTPUT=out/benchmark-baseline.json make -s benchmark
- name: Save outputs
+6 -9
View File
@@ -5,9 +5,6 @@ on:
paths:
- "libs/**"
env:
POETRY_VERSION: "2.1.2"
jobs:
benchmark:
runs-on: ubuntu-latest
@@ -21,14 +18,14 @@ jobs:
uses: Ana06/get-changed-files@v2.3.0
with:
format: json
- name: Set up Python 3.11 + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python 3.11
uses: astral-sh/setup-uv@v6
with:
python-version: "3.11"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: bench
enable-cache: true
cache-suffix: "bench"
- name: Install dependencies
run: poetry install --with dev
run: uv sync --group dev
- name: Download baseline
uses: actions/cache/restore@v4
with:
@@ -53,7 +50,7 @@ jobs:
echo 'OUTPUT<<EOF'
mv out/benchmark-baseline.json out/main.json
mv out/benchmark.json out/changes.json
poetry run pyperf compare_to out/main.json out/changes.json --table --group-by-speed
uv run pyperf compare_to out/main.json out/changes.json --table --group-by-speed
echo EOF
} >> "$GITHUB_OUTPUT"
- name: Annotation
+12 -25
View File
@@ -16,9 +16,6 @@ concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
env:
POETRY_VERSION: "2.1.2"
jobs:
changes:
runs-on: ubuntu-latest
@@ -38,7 +35,6 @@ jobs:
- 'libs/checkpoint/**'
- 'libs/checkpoint-sqlite/**'
- 'libs/checkpoint-postgres/**'
- 'libs/scheduler-kafka/**'
- 'libs/prebuilt/**'
sdk-js:
- 'libs/sdk-js/**'
@@ -56,7 +52,7 @@ jobs:
"libs/checkpoint",
"libs/checkpoint-sqlite",
"libs/checkpoint-postgres",
"libs/scheduler-kafka",
"libs/prebuilt",
]
if: needs.changes.outputs.python == 'true'
@@ -92,14 +88,6 @@ jobs:
uses: ./.github/workflows/_test_langgraph.yml
secrets: inherit
# NOTE: we're testing scheduler-kafka separately because it requires a different matrix
test-scheduler-kafka:
needs: changes
if: needs.changes.outputs.python == 'true'
name: "cd libs/scheduler-kafka"
uses: ./.github/workflows/_test_scheduler_kafka.yml
secrets: inherit
check-sdk-methods:
needs: changes
if: needs.changes.outputs.python == 'true'
@@ -125,26 +113,26 @@ jobs:
- "3.11"
steps:
- uses: actions/checkout@v4
- name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python ${{ matrix.python-version }}
uses: astral-sh/setup-uv@v6
with:
python-version: "3.11"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: schema-check-cli
enable-cache: true
cache-suffix: "schema-check-cli"
- name: Install CLI dependencies
run: |
cd libs/cli
poetry install
uv sync
- 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
poetry run python generate_schema.py
uv 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 'poetry run python generate_schema.py' in the libs/cli directory and commit the changes."
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."
diff schemas/schema.json schemas/schema.current.json
exit 1
fi
@@ -169,9 +157,9 @@ jobs:
run:
working-directory: ${{ matrix.working-directory }}
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
- name: Setup Node.js (LTS)
uses: actions/setup-node@v3
uses: actions/setup-node@v4
with:
node-version: "20"
cache: "yarn"
@@ -195,9 +183,9 @@ jobs:
run:
working-directory: ${{ matrix.working-directory }}
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
- name: Setup Node.js (LTS)
uses: actions/setup-node@v3
uses: actions/setup-node@v4
with:
node-version: "20"
cache: "yarn"
@@ -215,7 +203,6 @@ jobs:
lint-js,
test,
test-langgraph,
test-scheduler-kafka,
check-sdk-methods,
check-schema,
integration-test,
+15 -16
View File
@@ -4,14 +4,13 @@ on:
push:
branches:
- main
- v0
pull_request:
branches:
- main
- v0
workflow_dispatch:
env:
POETRY_VERSION: "2.1.2"
permissions:
contents: read
pages: write
@@ -57,21 +56,21 @@ jobs:
with:
fetch-depth: 0
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python
uses: astral-sh/setup-uv@v6
with:
python-version: "3.12"
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: docs
enable-cache: true
cache-suffix: "docs"
- name: Install dependencies
run: |
yarn
poetry install --with test --with docs --no-root
uv sync --all-groups
# we run this installation only for internal PRs
# as GITHUB_TOKEN is not available for PRs from outside contributors
if [ -n "${GITHUB_TOKEN}" ]; then
poetry run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
uv run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
fi
- name: Run unit tests
@@ -85,9 +84,9 @@ jobs:
run: make llms-text
- name: Build site
run: |
# If this is main branch, then we want to download stats. we do this
# If this is v0 branch, then we want to download stats. we do this
# with the env variable DOWNLOAD_STATS=true
if [ "${{ github.ref }}" == "refs/heads/main" ]; then
if [ "${{ github.ref }}" == "refs/heads/v0" ]; then
DOWNLOAD_STATS=true make build-docs
else
make build-docs
@@ -103,7 +102,7 @@ jobs:
run: |
if [ "${{ github.event_name }}" == "schedule" ]; then
echo "Running link check on all HTML files matching notebooks in docs directory..."
poetry run pytest -v \
uv 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/.*" \
@@ -128,7 +127,7 @@ jobs:
echo "Changed files: ${CHANGED_FILES}"
if [ -n "${CHANGED_FILES}" ]; then
echo "Running link check on HTML files matching changed notebook files..."
poetry run pytest -v \
uv 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/.*" \
@@ -147,8 +146,8 @@ jobs:
fi
- name: Configure GitHub Pages
if: github.ref == 'refs/heads/main'
uses: actions/configure-pages@v4
if: github.ref == 'refs/heads/v0'
uses: actions/configure-pages@v5
- name: Upload Pages Artifact
# if: github.ref == 'refs/heads/main'
@@ -157,6 +156,6 @@ jobs:
path: ./docs/site/
- name: Deploy to GitHub Pages
if: github.ref == 'refs/heads/main'
if: github.ref == 'refs/heads/v0'
id: deployment
uses: actions/deploy-pages@v4
-3
View File
@@ -11,9 +11,6 @@ on:
- cron: "0 5 * * *"
workflow_dispatch:
env:
POETRY_VERSION: "2.1.2"
jobs:
markdown-link-check:
runs-on: ubuntu-latest
+24 -25
View File
@@ -10,7 +10,6 @@ on:
env:
PYTHON_VERSION: "3.11"
POETRY_VERSION: "2.1.2"
jobs:
build:
@@ -26,12 +25,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ env.PYTHON_VERSION }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
enable-cache: true
cache-suffix: "release"
# We want to keep this build stage *separate* from the release stage,
# so that there's no sharing of permissions between them.
@@ -45,7 +44,7 @@ jobs:
# > from the publish job.
# https://github.com/pypa/gh-action-pypi-publish#non-goals
- name: Build project for distribution
run: poetry build
run: uv build
working-directory: ${{ inputs.working-directory }}
- name: Upload build
@@ -59,8 +58,8 @@ jobs:
shell: bash
working-directory: ${{ inputs.working-directory }}
run: |
PKG_NAME="$(poetry version | cut -d ' ' -f 1)"
VERSION="$(poetry version --short)"
PKG_NAME=$(grep -m 1 "^name = " pyproject.toml | cut -d '"' -f 2)
VERSION=$(grep -m 1 "^version = " pyproject.toml | cut -d '"' -f 2)
SHORT_PKG_NAME="$(echo "$PKG_NAME" | sed -e 's/langgraph//g' -e 's/-//g')"
if [ -z $SHORT_PKG_NAME ]; then
TAG="$VERSION"
@@ -163,11 +162,11 @@ jobs:
# - The package is published, and it breaks on the missing dependency when
# used in the real world.
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ env.PYTHON_VERSION }}
poetry-version: ${{ env.POETRY_VERSION }}
enable-cache: true
- name: Import published package
shell: bash
@@ -185,18 +184,18 @@ jobs:
# - attempt install again after 5 seconds if it fails because there is
# sometimes a delay in availability on test pypi
run: |
poetry run pip install \
uv run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION" || \
( \
sleep 5 && \
poetry run pip install \
uv run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION" \
)
if [[ "$PKG_NAME" == *prebuilt* ]]; then
poetry run pip install langgraph
uv run pip install langgraph
fi
if [[ "$PKG_NAME" == *checkpoint* || "$PKG_NAME" == *prebuilt* ]]; then
@@ -209,10 +208,10 @@ jobs:
IMPORT_NAME="$(echo "$PKG_NAME" | sed s/-/_/g)"
fi
poetry run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
uv run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
- name: Import test dependencies
run: poetry install --with dev
run: uv sync --group dev
working-directory: ${{ inputs.working-directory }}
# Overwrite the local version of the package with the test PyPI version.
@@ -223,7 +222,7 @@ jobs:
PKG_NAME: ${{ needs.build.outputs.pkg-name }}
VERSION: ${{ needs.build.outputs.version }}
run: |
poetry run pip install \
uv run pip install \
--extra-index-url https://test.pypi.org/simple/ \
"$PKG_NAME==$VERSION"
@@ -253,12 +252,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ env.PYTHON_VERSION }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
enable-cache: true
cache-suffix: "release"
- uses: actions/download-artifact@v4
with:
@@ -294,12 +293,12 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
uses: "./.github/actions/poetry_setup"
- name: Set up Python
uses: astral-sh/setup-uv@v6
with:
python-version: ${{ env.PYTHON_VERSION }}
poetry-version: ${{ env.POETRY_VERSION }}
cache-key: release
enable-cache: true
cache-suffix: "release"
- uses: actions/download-artifact@v4
with:
+1 -1
View File
@@ -22,7 +22,7 @@ jobs:
- uses: actions/checkout@v4
# JS Build
- name: Use Node.js
uses: actions/setup-node@v3
uses: actions/setup-node@v4
with:
node-version: "20"
cache: "yarn"
+9 -9
View File
@@ -27,30 +27,30 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Set up Python + Poetry
uses: "./.github/actions/poetry_setup"
uses: astral-sh/setup-uv@v6
with:
python-version: 3.11
poetry-version: 2.1.2
cache-key: test-langgraph-notebooks
python-version: "3.11"
enable-cache: true
cache-suffix: "test-langgraph-notebooks"
- name: Install dependencies
run: |
poetry install --with test --no-root
poetry run pip install jupyter
uv sync --group test
uv run pip install jupyter
- name: Start services
run: make start-services
- name: Pre-download tiktoken files
run: |
poetry run python _scripts/download_tiktoken.py
uv run python _scripts/download_tiktoken.py
- name: Prepare notebooks
run: |
if [ "${{ matrix.lib-version }}" = "development" ]; then
poetry run python _scripts/prepare_notebooks_for_ci.py --comment-install-cells
uv run python _scripts/prepare_notebooks_for_ci.py --comment-install-cells
else
poetry run python _scripts/prepare_notebooks_for_ci.py
uv run python _scripts/prepare_notebooks_for_ci.py
fi
- name: Run notebooks
+1
View File
@@ -181,3 +181,4 @@ Chinook.db
.vercel
.turbo
.editorconfig
.scratch
+55
View File
@@ -0,0 +1,55 @@
# AGENTS Instructions
This repository is a monorepo. Each library lives in a subdirectory under `libs/`.
When you modify code in any library, run the following commands in that library's directory before creating a pull request:
- `make format` run code formatters
- `make lint` run the linter
- `make test` execute the test suite
To run a particular test file or to pass additional pytest options you can specify the `TEST` variable:
```
TEST=path/to/test.py make test
```
Other pytest arguments can also be supplied inside the `TEST` variable.
## Libraries
The repository contains several Python and JavaScript/TypeScript libraries.
Below is a high-level overview:
- **checkpoint** base interfaces for LangGraph checkpointers.
- **checkpoint-postgres** Postgres implementation of the checkpoint saver.
- **checkpoint-sqlite** SQLite implementation of the checkpoint saver.
- **cli** official command-line interface for LangGraph.
- **langgraph** core framework for building stateful, multi-actor agents.
- **prebuilt** high-level APIs for creating and running agents and tools.
- **sdk-js** JS/TS SDK for interacting with the LangGraph REST API.
- **sdk-py** Python SDK for the LangGraph Platform API.
### Dependency map
The diagram below lists downstream libraries for each production dependency as
declared in that library's `pyproject.toml` (or `package.json`).
```text
checkpoint
├── checkpoint-postgres
├── checkpoint-sqlite
├── prebuilt
└── langgraph
prebuilt
└── langgraph
sdk-py
├── langgraph
└── cli
sdk-js (standalone)
```
Changes to a library may impact all of its dependents shown above.
+3 -2
View File
@@ -109,7 +109,7 @@ Here are some high-level tips on writing a good how-to guide:
LangGraph's conceptual guides fall under the **Explanation** quadrant of Diataxis. They should cover LangChain terms and concepts
in a more abstract way than how-to guides or tutorials, and should be geared towards curious users interested in
gaining a deeper understanding of the framework. Try to avoid excessively large code examples. The goal here is to
impart perspective to the user rather than to finish a practical project. These guides should cover **why** things work they way they do.
impart perspective to the user rather than to finish a practical project. These guides should cover **why** things work the way they do.
To quote the Diataxis website:
@@ -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 actue need.
We generally do not merge new tutorials from outside contributors without an actual need.
We welcome updates as well as new integration docs, how-tos, and references.
### Avoid duplication
@@ -227,6 +227,7 @@ 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
```
+58
View File
@@ -0,0 +1,58 @@
# Define the directories containing projects
LIBS_DIRS := $(wildcard libs/*)
# Default target
.PHONY: all
all: lint format lock test
# Install dependencies for all projects
.PHONY: install
install:
@echo "Creating virtual environment..."
@uv venv
@for dir in $(LIBS_DIRS); do \
if [ -f $$dir/pyproject.toml ]; then \
echo "Installing dependencies for $$dir"; \
uv pip install -e $$dir; \
fi; \
done
# Lint all projects
.PHONY: lint
lint:
@for dir in $(LIBS_DIRS); do \
if [ -f $$dir/Makefile ]; then \
echo "Running lint in $$dir"; \
$(MAKE) -C $$dir lint; \
fi; \
done
# Format all projects
.PHONY: format
format:
@for dir in $(LIBS_DIRS); do \
if [ -f $$dir/Makefile ]; then \
echo "Running format in $$dir"; \
$(MAKE) -C $$dir format; \
fi; \
done
# Lock all projects
.PHONY: lock
lock:
@for dir in $(LIBS_DIRS); do \
if [ -f $$dir/Makefile ]; then \
echo "Running lock in $$dir"; \
(cd $$dir && uv lock); \
fi; \
done
# Test all projects
.PHONY: test
test:
@for dir in $(LIBS_DIRS); do \
if [ -f $$dir/Makefile ]; then \
echo "Running test in $$dir"; \
$(MAKE) -C $$dir test; \
fi; \
done
+3 -4
View File
@@ -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 powerful 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 low-level orchestration framework for building, managing, and deploying long-running, stateful agents.
## Get started
@@ -74,10 +73,10 @@ While LangGraph can be used standalone, it also integrates seamlessly with any L
- [Guides](https://langchain-ai.github.io/langgraph/how-tos/): Quick, actionable code snippets for topics such as streaming, adding memory & persistence, and design patterns (e.g. branching, subgraphs, etc.).
- [Reference](https://langchain-ai.github.io/langgraph/reference/graphs/): Detailed reference on core classes, methods, how to use the graph and checkpointing APIs, and higher-level prebuilt components.
- [Examples](https://langchain-ai.github.io/langgraph/tutorials/): Guided examples on getting started with LangGraph.
- [Examples](https://langchain-ai.github.io/langgraph/tutorials/overview/): 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 powerful, production-ready AI applications.
- [Case studies](https://www.langchain.com/built-with-langgraph): Hear how industry leaders use LangGraph to ship AI applications at scale.
## Acknowledgements
+16 -18
View File
@@ -12,32 +12,30 @@ build-prebuilt:
# generates the final prebuilt page.
@if [ "$(DOWNLOAD_STATS)" = "true" ]; then \
set -x; \
poetry run python -m _scripts.third_party_page.get_download_stats stats.yml; \
uv run python -m _scripts.third_party_page.get_download_stats stats.yml; \
set +x; \
else \
set -x; \
poetry run python -m _scripts.third_party_page.get_download_stats --fake stats.yml; \
uv run python -m _scripts.third_party_page.get_download_stats --fake stats.yml; \
set +x; \
fi
poetry run python -m _scripts.third_party_page.create_third_party_page stats.yml docs/agents/prebuilt.md --language python
uv run python -m _scripts.third_party_page.create_third_party_page stats.yml docs/agents/prebuilt.md --language python
build-docs: build-typedoc build-prebuilt
poetry run python -m mkdocs build --clean -f mkdocs.yml --strict
uv run python -m mkdocs build --clean -f mkdocs.yml --strict
llms-text:
poetry run python -m _scripts.generate_llms_text docs/llms-full.txt
uv run python -m _scripts.generate_llms_text docs/llms-full.txt
install-vercel-deps:
dnf install -y python3.11
curl -sSL https://install.python-poetry.org | python3 -
poetry self update 1.8.5
# don't use vercel's python - it wasn't compiled with sqlite support, and it fails when installing ipython's kernel
poetry env use /usr/bin/python3.11
poetry install --with docs --with test --no-root
curl -sL "https://astral.sh/uv/install.sh" | bash -s
export PATH="${HOME}/.cargo/bin:${PATH}"
uv venv --python 3.11
uv sync --all-groups
tests:
# Run unit tests
poetry run pytest tests/unit_tests
uv run pytest tests/unit_tests
vercel-build-docs: install-vercel-deps
@@ -45,10 +43,10 @@ vercel-build-docs: install-vercel-deps
serve-clean-docs: clean-docs
poetry run python -m mkdocs serve -c -f mkdocs.yml --strict -w ../libs/langgraph
uv run python -m mkdocs serve -c -f mkdocs.yml --strict -w ../libs/langgraph
serve-docs: build-typedoc
poetry run python -m mkdocs serve -f mkdocs.yml -w ../libs/langgraph -w ../libs/checkpoint -w ../libs/sdk-py --dirty
uv 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
@@ -56,13 +54,13 @@ clean-docs:
## Run format against the project documentation.
format-docs:
poetry run ruff format docs
poetry run ruff check --fix docs
uv run ruff format docs
uv run ruff check --fix docs
# Check the docs for linting violations
lint-docs:
poetry run ruff format --check docs
poetry run ruff check docs
uv run ruff format --check docs
uv run ruff check docs
codespell:
./codespell_notebooks.sh .
+1 -1
View File
@@ -3,7 +3,7 @@
To setup requirements for building docs you can run:
```bash
poetry install --with test
uv sync --group test
```
## Serving documentation locally
+1 -1
View File
@@ -8,7 +8,7 @@ execute_notebook() {
file="$1"
echo "Starting execution of $file"
start_time=$(date +%s)
if ! output=$(time poetry run jupyter execute "$file" 2>&1); then
if ! output=$(time uv run jupyter execute "$file" 2>&1); then
end_time=$(date +%s)
execution_time=$((end_time - start_time))
echo "Error in $file. Execution time: $execution_time seconds"
+238 -26
View File
@@ -1,10 +1,19 @@
"""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
@@ -13,7 +22,49 @@ HERE = os.path.dirname(os.path.abspath(__file__))
SOURCE_DIR = os.path.abspath(os.path.join(os.path.dirname(HERE), "docs"))
def _make_llms_text(output_file: str) -> str:
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:
"""Generate a consolidated text file from markdown/notebook files for LLM training.
Args:
@@ -21,11 +72,9 @@ def _make_llms_text(output_file: str) -> str:
"""
# 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)
)
@@ -35,30 +84,14 @@ def _make_llms_text(output_file: str) -> str:
all_content = []
# Process each file
for file_path in all_files:
print(f"Processing {file_path}")
rel_path = os.path.relpath(file_path, SOURCE_DIR)
# Process files concurrently
tasks = [convert_ipynb_to_md(file_path) for file_path in all_files]
results = await asyncio.gather(*tasks)
# 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
)
# Combine results with file paths
for file_path, processed_content in zip(all_files, results):
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
@@ -69,6 +102,168 @@ def _make_llms_text(output_file: str) -> str:
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
@@ -78,6 +273,23 @@ 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()
_make_llms_text(args.output_file)
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)
+59 -4
View File
@@ -1,9 +1,16 @@
"""mkdocs hooks for adding custom logic to documentation pipeline.
Lifecycle events: https://www.mkdocs.org/dev-guide/plugins/#events
"""
import logging
import os
import posixpath
import re
from typing import Any, Dict
from bs4 import BeautifulSoup
from mkdocs.config.defaults import MkDocsConfig
from mkdocs.structure.files import Files, File
from mkdocs.structure.pages import Page
@@ -39,6 +46,7 @@ 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",
@@ -52,6 +60,7 @@ 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",
@@ -69,6 +78,7 @@ REDIRECT_MAP = {
"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",
@@ -98,8 +108,7 @@ REDIRECT_MAP = {
"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"
"cloud/how-tos/assistant_versioning.md": "cloud/how-tos/configuration_cloud.md",
}
@@ -289,7 +298,7 @@ Redirecting...
"""
def write_html(site_dir, old_path, new_path):
def _write_html(site_dir, old_path, new_path):
"""Write an HTML file in the site_dir with a meta redirect to the new page"""
# Determine all relevant paths
old_path_abs = os.path.join(site_dir, old_path)
@@ -305,6 +314,52 @@ def write_html(site_dir, old_path, new_path):
f.write(content)
def _inject_gtm(html: str) -> str:
"""Inject Google Tag Manager code into the HTML.
Code to inject Google Tag Manager noscript tag immediately after <body>.
This is done via hooks rather than via a template because the MkDocs material
theme does not seem to allow placing the code immediately after the <body> tag
without modifying the template files directly.
Args:
html: The HTML content to modify.
Returns:
The modified HTML content with GTM code injected.
"""
# Code was copied from Google Tag Manager setup instructions.
gtm_code = """
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-T35S4S46"
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->
"""
soup = BeautifulSoup(html, "html.parser")
body = soup.body
if body:
# Insert the GTM code as raw HTML at the top of <body>
body.insert(0, BeautifulSoup(gtm_code, "html.parser"))
return str(soup)
else:
return html # fallback if no <body> found
def on_post_page(output: str, page: Page, config: MkDocsConfig) -> str:
"""Inject Google Tag Manager noscript tag immediately after <body>.
Args:
output: The HTML output of the page.
page: The page instance.
config: The MkDocs configuration object.
Returns:
modified HTML output with GTM code injected.
"""
return _inject_gtm(output)
# Create HTML files for redirects after site dir has been built
def on_post_build(config):
use_directory_urls = config.get("use_directory_urls")
@@ -321,4 +376,4 @@ def on_post_build(config):
+ hash
+ suffix
)
write_html(config["site_dir"], old_html_path, new_html_path)
_write_html(config["site_dir"], old_html_path, new_html_path)
+1 -1
View File
@@ -15,7 +15,7 @@ This guide shows you how to set up and use LangGraph's **prebuilt**, **reusable*
Before you start this tutorial, ensure you have the following:
- An [Anthropic](https://console.anthropic.com/settings/admin-keys) API key
- An [Anthropic](https://console.anthropic.com/settings/keys) API key
## 1. Install dependencies
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@@ -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`](../reference/types.md#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`][langgraph.types.Command] object to resume the graph with a value provided by the human.
## Using with Agent Inbox
+20 -18
View File
@@ -29,7 +29,7 @@ from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
# highlight-next-line
async with MultiServerMCPClient(
client = MultiServerMCPClient(
{
"math": {
"command": "python",
@@ -38,23 +38,25 @@ async with MultiServerMCPClient(
"transport": "stdio",
},
"weather": {
# Ensure your start your weather server on port 8000
"url": "http://localhost:8000/sse",
"transport": "sse",
# Ensure you start your weather server on port 8000
"url": "http://localhost:8000/mcp",
"transport": "streamable_http",
}
}
) 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?"}]}
)
)
# 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?"}]}
)
```
## Custom MCP servers
@@ -87,7 +89,7 @@ if __name__ == "__main__":
mcp.run(transport="stdio")
```
```python title="Example Weather Server (SSE transport)"
```python title="Example Weather Server (Streamable HTTP transport)"
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("Weather")
@@ -98,7 +100,7 @@ async def get_weather(location: str) -> str:
return "It's always sunny in New York"
if __name__ == "__main__":
mcp.run(transport="sse")
mcp.run(transport="streamable-http")
```
## Additional resources
+4 -4
View File
@@ -82,13 +82,13 @@ ny_response = agent.invoke(
```
1. The `InMemorySaver` is a checkpointer that stores the agent's state in memory. In a production setting, you would typically use a database or other persistent storage. Please review the [checkpointer documentation](../reference/checkpoints.md) for more options. If you're deploying with **LangGraph Platform**, the platform will provide a production-ready checkpointer for you.
2. The `checkpointer` is passed to the agent. This enables the agent to persist its state across invocations. Please note that
2. The `checkpointer` is passed to the agent. This enables the agent to persist its state across invocations.
3. A unique `thread_id` is provided in the config. This ID is used to identify the conversation session. The value is controlled by the user and can be any string.
4. The agent will continue the conversation using the same `thread_id`. This will allow the agent to infer that the user is asking specifically about the **weather** in New York.
When the agent is invoked the second time with the same `thread_id`, the original message history from the first conversation is automatically included, allowing the agent to infer that the user is asking specifically about the **weather** in New York.
!!! Note "LangGraph Platform providers a production-ready checkpointer"
!!! Note "LangGraph Platform provides a production-ready checkpointer"
If you're using [LangGraph Platform](./deployment.md), during deployment your checkpointer will be automatically configured to use a production-ready database.
@@ -294,7 +294,7 @@ agent.invoke(
)
```
For more details, see [how to update state from tools](../how-tos/update-state-from-tools.ipynb).
For more details, see [how to update state from tools](../how-tos/tool-calling.ipynb#update).
## 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/cross-thread-persistence.ipynb) to persist data across invocations.
1. [Configure a store](../how-tos/persistence.ipynb#add-long-term-memory) 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 }
+169 -16
View File
@@ -23,29 +23,182 @@ Compatible models can be found in the [LangChain integrations directory](https:/
You can configure an agent with a model name string:
```python
from langgraph.prebuilt import create_react_agent
=== "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
)
```
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:
```python
from langchain.chat_models import init_chat_model
=== "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
)
```
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.
+1 -1
View File
@@ -9,7 +9,7 @@ hide:
# Multi-agent
A single agent might struggle if it needs to specialize in multiple domains or manage many tools. To tackle this, you can break your agent into smaller, independent agents and composing them into a [multi-agent system](../concepts/multi_agent.md).
A single agent might struggle if it needs to specialize in multiple domains or manage many tools. To tackle this, you can break your agent into smaller, independent agents and compose them into a [multi-agent system](../concepts/multi_agent.md).
In multi-agent systems, agents need to communicate between each other. They do so via [handoffs](#handoffs) — a primitive that describes which agent to hand control to and the payload to send to that agent.
+136
View File
@@ -53,3 +53,139 @@ 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 .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.
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.
## 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 .invoke()` or `async for` with `.astream()`
- **Asynchronous** using `await .ainvoke()` or `async for` with `.astream()`
=== "Sync invocation"
```python
+15 -1
View File
@@ -280,7 +280,21 @@ LangGraph allows access to short-term and long-term memory from tools. See [Memo
## Prebuilt tools
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 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.
You can browse the full list of available integrations in the [LangChain integrations directory](https://python.langchain.com/docs/integrations/tools/).
+19
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@@ -0,0 +1,19 @@
{
"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__;"
}
+1 -1
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@@ -2,6 +2,6 @@
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.
Many LangGraph Platform endpoints accept a `webhook` parameter. If this parameter is specified by a an endpoint that can accept POST requests, LangGraph Platform will send a request at the completion of a run.
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.
See the corresponding [how-to guide](../../cloud/how-tos/webhooks.md) for more detail.
+9
View File
@@ -62,6 +62,15 @@ Starting from the `LangGraph Platform` view...
1. In the panel, select the `Server` tab to view server logs for the revision. Server logs are only available after a revision has been deployed.
1. Within the `Server` tab, adjust the date/time range picker as needed. By default, the date/time range picker is set to the `Last 7 days`.
## View Deployment Metrics
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. Select an existing deployment to monitor.
1. Select the `Monitoring` tab to view the deployment metrics. See a list of [all available metrics](../../concepts/langgraph_control_plane.md#monitoring).
1. Within the `Monitoring` tab, use the date/time range picker as needed. By default, the date/time range picker is set to the `Last 15 minutes`.
## Interrupt Revision
Interrupting a revision will stop deployment of the revision.
+1 -1
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@@ -16,4 +16,4 @@ Users can add an array of additional lines to add to the Dockerfile following th
}
```
This would install the system packages required to use Pillow if we were working with `jpeq` or `png` image formats.
This would install the system packages required to use Pillow if we were working with `jpeg` or `png` image formats.
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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.
!!! important "Beta"
The Self-Hosted Control Plane deployment option is currently in beta stage.
!!! info "Important"
The Self-Hosted Control Plane deployment option is currently in beta stage and requires an [Enterprise](../../concepts/plans.md) plan.
## Prerequisites
@@ -30,18 +30,17 @@ Before deploying, review the [conceptual guide for the Self-Hosted Control Plane
1. `LangGraphPlatform CRD`: A CRD for LangGraph Platform deployments. This contains the spec for managing an instance of a LangGraph platform deployment.
1. `operator`: This operator handles changes to your LangGraph Platform CRDs.
1. `host-backend`: This is the [control plane](../../concepts/langgraph_control_plane.md).
1. Two additional images will be used by the chart.
1. Two additional images will be used by the chart. Use the images that are specified in the latest release.
hostBackendImage:
repository: "docker.io/langchain/hosted-langserve-backend"
pullPolicy: IfNotPresent
tag: "0.9.80"
operatorImage:
repository: "docker.io/langchain/langgraph-operator"
pullPolicy: IfNotPresent
tag: "aa9dff4"
1. In your `values.yaml` file, enable the `langgraphPlatform` option. Note that you must also have a valid ingress setup:
1. In your config file for langsmith (usually `langsmith_config.yaml`, enable the `langgraphPlatform` option. Note that you must also have a valid ingress setup:
config:
langgraphPlatform:
enabled: true
@@ -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.
!!! important "Beta"
The Self-Hosted Data Plane deployment option is currently in beta stage.
!!! info "Important"
The Self-Hosted Data Plane deployment option is currently in beta stage and requires an [Enterprise](../../concepts/plans.md) plan.
## 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 install on your cluster.
1. A valid `Ingress` controller is installed on your cluster.
1. You have slack space in your cluster for multiple deployments. `Cluster-Autoscaler` is recommended to automatically provision new nodes.
### Setup
+1 -4
View File
@@ -95,7 +95,7 @@ my-app/
## Define Graphs
Implement your graphs! Graphs can be defined in a single file or multiple files. Make note of the variable names of each [CompiledGraph][langgraph.graph.graph.CompiledGraph] to be included in the LangGraph application. The variable names will be used later when creating the [LangGraph configuration file](../reference/cli.md#configuration-file).
Implement your graphs! Graphs can be defined in a single file or multiple files. Make note of the variable names of each [CompiledStateGraph][langgraph.graph.state.CompiledStateGraph] to be included in the LangGraph application. The variable names will be used later when creating the [LangGraph configuration file](../reference/cli.md#configuration-file).
Example `agent.py` file, which shows how to import from other modules you define (code for the modules is not shown here, please see [this repository](https://github.com/langchain-ai/langgraph-example) to see their implementation):
@@ -129,9 +129,6 @@ workflow.add_edge("action", "agent")
graph = workflow.compile()
```
!!! warning "Assign `CompiledGraph` to Variable"
The build process for LangGraph Platform 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
@@ -155,10 +155,6 @@ const workflow = new StateGraph(MessagesAnnotation)
export const graph = workflow.compile();
```
!!! info "Assign `CompiledGraph` to Variable"
The build process for LangGraph Platform 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
+17 -15
View File
@@ -56,22 +56,27 @@ cloudpickle>=3.0.0
Example `pyproject.toml` file:
```toml
[tool.poetry]
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
[project]
name = "my-agent"
version = "0.0.1"
description = "An excellent agent build for LangGraph Platform."
authors = ["Polly the parrot <1223+polly@users.noreply.github.com>"]
license = "MIT"
authors = [
{name = "Polly the parrot", email = "1223+polly@users.noreply.github.com"}
]
license = {text = "MIT"}
readme = "README.md"
requires-python = ">=3.9"
dependencies = [
"langgraph>=0.2.0",
"langchain-fireworks>=0.1.3"
]
[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"
[tool.hatch.build.targets.wheel]
packages = ["my_agent"]
```
Example file directory:
@@ -103,7 +108,7 @@ my-app/
## Define Graphs
Implement your graphs! Graphs can be defined in a single file or multiple files. Make note of the variable names of each [CompiledGraph][langgraph.graph.graph.CompiledGraph] to be included in the LangGraph application. The variable names will be used later when creating the [LangGraph configuration file](../reference/cli.md#configuration-file).
Implement your graphs! Graphs can be defined in a single file or multiple files. Make note of the variable names of each [CompiledStateGraph][langgraph.graph.state.CompiledStateGraph] to be included in the LangGraph application. The variable names will be used later when creating the [LangGraph configuration file](../reference/cli.md#configuration-file).
Example `agent.py` file, which shows how to import from other modules you define (code for the modules is not shown here, please see [this repository](https://github.com/langchain-ai/langgraph-example-pyproject) to see their implementation):
@@ -137,9 +142,6 @@ workflow.add_edge("action", "agent")
graph = workflow.compile()
```
!!! warning "Assign `CompiledGraph` to Variable"
The build process for LangGraph Platform requires that the `CompiledGraph` object be assigned to a variable at the top-level of a Python module.
Example file directory:
```bash
@@ -8,7 +8,7 @@ Please see [the overview of LangGraph human-in-the-loop](../../concepts/human_in
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`](../reference/types.md#langgraph.types.Command) object that provides the human's response.
The graph is resumed using a [`Command`][langgraph.types.Command] object that provides the human's response.
**Graph node with `interrupt`:**
+25 -20
View File
@@ -1,31 +1,36 @@
# Testing local agents with remote traces
# Debug LangSmith traces
## Overview
This guide explains how to open LangSmith traces in LangGraph Studio for interactive investigation and debugging.
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.
## Open deployed threads
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.
1. Open the LangSmith trace, selecting the root run.
2. Click "Run in Studio".
## Requirements
This will open LangGraph Studio connected to the associated LangGraph Platform deployment with the trace's parent thread selected.
!!! info "Prerequisites"
## 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"
- langgraph>=0.3.18
- langgraph-api>=0.0.32
- Contains the same set of nodes present in the remote trace
- 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.
### Cloning Thread
## Cloning Thread
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.
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.
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.
@@ -50,7 +50,7 @@ For more information on configurations, [see here](../../concepts/low_level.md#c
### LangGraph SDK
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.
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.
This example uses the same configuration schema as above, and creates an assistant with `model_name` set to `openai`.
@@ -228,10 +228,10 @@ Inside your deployment, select the "Assistants" tab. For the assistant you would
### 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.
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 previously versions.
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"
@@ -321,7 +321,7 @@ If you now run your graph and pass in this assistant id, it will use the first v
### 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.
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 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.
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.
+1 -1
View File
@@ -4,7 +4,7 @@ Sometimes you don't want to run your graph based on user interaction, but rather
## Setup
First, let's setup our SDK client, assistant, and thread:
First, let's set up our SDK client, assistant, and thread:
=== "Python"
+8 -13
View File
@@ -1,17 +1,12 @@
# Adding nodes as dataset examples in Studio
# Add node to dataset
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.
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.
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.
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.
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 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.
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.
=== "Python"
+38 -9
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@@ -1,19 +1,48 @@
# How to manage Assistants
# Run application
!!! info "Prerequisites"
!!!info "Prerequisites"
- [Running agents](../../agents/run_agents.md#running-agents)
- [Assistants Overview](../../concepts/assistants.md)
LangGraph Studio lets you view, edit, and update your assistants, and allows you to run your graph using these assistant configurations.
This guide shows how to submit a [run](../concepts/runs.md) to your application.
## Graph mode
To view your assistants, click the "Manage Assistants" button in the bottom left corner.
### Specify input
First define the input to your graph with in the "Input" section on the left side of the page, below the graph interface.
This opens a modal for you to view all the assistants for the selected graph. Specify the assistant and its version you would like to mark as "Active", and this assistant will be used when submitting runs.
Studio will attempt to render a form for your input based on the graph's defined [state schema](../../concepts/low_level.md/#schema). To disable this, click the "View Raw" button, which will present you with a JSON editor.
Click the up/down arrows at the top of the "Input" section to toggle through and use previously submitted inputs.
### Run settings
#### Assistant
To specify the [assistant](../../concepts/assistants.md) that is used for the run click the settings button in the bottom left corner. If an assistant is currently selected the button will also list the assistant name. If no assistant is selected it will say "Manage Assistants".
Select the assistant to run and click the "Active" toggle at the top of the modal to activate it. [See here](./studio/manage_assistants.md) for more information on managing assistants.
#### Streaming
Click the dropdown next to "Submit" and click the toggle to enable/disable streaming.
#### Breakpoints
To run your graph with breakpoints, click the "Interrupt" button. Select a node and whether to pause before and/or after that node has executed. Click "Continue" in the thread log to resume execution.
For more information on breakpoints see [here](../../concepts/breakpoints.md).
### Submit run
To submit the run with the specified input and run settings, click the "Submit" button. This will add a [run](../concepts/runs.md) to the existing selected [thread](../concepts/threads.md). If no thread is currently selected, a new one will be created.
To cancel the ongoing run, click the "Cancel" button.
By default, the "Default configuration" option will be active. This option reflects the default configuration defined in your graph. Edits made to this configuration will be used to update the run-time configuration, but will not update or create a new assistant unless you click "Create new assistant".
## Chat mode
Specify the input to your chat application in the bottom of the conversation panel. Click the "Send message" button to submit the input as a Human message and have the response streamed back.
Chat mode enables you to switch through the different assistants in your graph via the dropdown selector at the top of the page. To create, edit, or delete assistants, use Graph mode.
To cancel the ongoing run, click the "Cancel" button. Click the "Show tool calls" toggle to hide/show tool calls in the conversation.
## Learn more
To run your application from a specific checkpoint in an existing thread, see [this guide](./threads_studio.md#edit-thread-history).
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@@ -1,23 +1,28 @@
# Prompt Engineering in LangGraph Studio
# Iterate on prompts
## Overview
A central aspect of agent development is prompt engineering. LangGraph Studio makes it easy to iterate on the prompts used within your graph directly within the UI.
LangGraph Studio supports two methods for modifying prompts in your graph: direct node editing and the LangSmith Playground interface.
## Setup
## Direct Node Editing
The first step is to define your [configuration](https://langchain-ai.github.io/langgraph/how-tos/configuration/) such that LangGraph Studio is aware of the prompts you want to iterate on and which nodes they are associated with.
Studio allows you to edit prompts used inside individual nodes, directly from the graph interface.
### Reference
!!! info "Prerequisites"
When defining your configuration, you can use special metadata keys to instruct LangGraph Studio how to handle different fields. Here's a reference for the available configuration options:
- [Assistants overview](../../concepts/assistants.md)
#### `langgraph_nodes`
### Graph Configuration
- **Description**: Specifies which graph nodes a configuration field is associated with.
Define your [configuration](https://langchain-ai.github.io/langgraph/how-tos/configuration/) to specify prompt fields and their associated nodes using `langgraph_nodes` and `langgraph_type` keys.
#### Configuration Reference
##### `langgraph_nodes`
- **Description**: Specifies which nodes of the graph a configuration field is associated with.
- **Value Type**: Array of strings, where each string is the name of a node in your graph.
- **Usage Context**: Include in the `json_schema_extra` dictionary for Pydantic models or the `metadata["json_schema_extra"]` dictionary for dataclasses.
- **Required**: No, but necessary if you want a field to be editable for specific nodes in the UI.
- **Example**:
```python
system_prompt: str = Field(
@@ -26,14 +31,13 @@ When defining your configuration, you can use special metadata keys to instruct
)
```
#### `langgraph_type`
##### `langgraph_type`
- **Description**: Specifies the type of configuration field, which determines how it's handled in the UI.
- **Value Type**: String
- **Supported Values**:
- `"prompt"`: Indicates the field contains prompt text that should be treated specially in the UI.
- **Usage Context**: Include in the `json_schema_extra` dictionary for Pydantic models or the `metadata["json_schema_extra"]` dictionary for dataclasses.
- **Required**: No, but helpful for prompt fields to enable special handling.
- **Example**:
```python
system_prompt: str = Field(
@@ -45,9 +49,7 @@ When defining your configuration, you can use special metadata keys to instruct
)
```
### Example
For example, if you have a node called `call_model` whose system prompt you want to iterate on, you can define a configuration like the following.
#### Example Configuration
```python
## Using Pydantic
@@ -111,30 +113,22 @@ class Configuration:
```
## Iterating on prompts
### Editing prompts in UI
### Node Configuration
1. Locate the gear icon on nodes with associated configuration fields
2. Click to open the configuration modal
3. Edit the values
4. Save to update the current assistant version or create a new one
With this set up, running your graph and viewing in LangGraph Studio will result in the graph rendering like such.
## LangSmith Playground
**Note the configuration icon in the top right corner of the `call_model` node**:
The [LangSmith Playground](https://
docs.smith.langchain.com/prompt_engineering/how_to_guides#playground) interface allows testing individual LLM calls without running the full graph:
![Graph in Studio](img/studio_graph_with_configuration.png){width=1200}
1. Select a thread
2. Click "View LLM Runs" on a node. This lists all the LLM calls (if any) made inside the node.
3. Select an LLM run to open in Playground
4. Modify prompts and test different model and tool settings
5. Copy updated prompts back to your graph
Clicking this icon will open a modal where you can edit the configuration for all of the fields associated with the `call_model` node. From here, you can save your changes and apply them to the graph. Note that these values reflect the currently active assistant, and saving will update the assistant with the new values.
![Configuration modal](img/studio_node_configuration.png){width=1200}
### Playground
LangGraph Studio also supports prompt engineering through an integration with the LangSmith Playground. To do so:
1. Open an existing thread or create a new one.
2. Within the thread log, any nodes that have made an LLM call will have a "View LLM Runs" button. Clicking this will open a popover with the LLM runs for that node.
3. Select the LLM run you want to edit. This will open the LangSmith Playground with the selected LLM run.
![Playground in Studio](img/studio_playground.png){width=1200}
From here you can edit the prompt, test different model configurations and re-run just this LLM call without having to re-run the entire graph. When you are happy with your changes, you can copy the updated prompt back into your graph.
For more information on how to use the LangSmith Playground, see the [LangSmith Playground documentation](https://docs.smith.langchain.com/prompt_engineering/how_to_guides#playground).
For advanced Playground features, click the expand button in the top right corner.
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# LangGraph Studio FAQs
## Why is my project failing to start?
A project may fail to start if the configuration file is defined incorrectly, or if required environment variables are missing. See [here](../../reference/cli.md#configuration-file) for how your configuration file should be defined.
## How does interrupt work?
When you select the `Interrupts` dropdown and select a node to interrupt the graph will pause execution before and after (unless the node goes straight to `END`) that node has run. This means that you will be able to both edit the state before the node is ran and the state after the node has ran. This is intended to allow developers more fine-grained control over the behavior of a node and make it easier to observe how the node is behaving. You will not be able to edit the state after the node has ran if the node is the final node in the graph.
For more information on interrupts and human in the loop, see [here](./human_in_the_loop.md).
## Why are extra edges showing up in my graph?
If you don't define your conditional edges carefully, you might notice extra edges appearing in your graph. This is because without proper definition, LangGraph Studio assumes the conditional edge could access all other nodes. In order for this to not be the case, you need to be explicit about how you define the nodes the conditional edge routes to. There are two ways you can do this:
### Solution 1: Include a path map
The first way to solve this is to add path maps to your conditional edges. A path map is just a dictionary or array that maps the possible outputs of your router function with the names of the nodes that each output corresponds to. The path map is passed as the third argument to the `add_conditional_edges` function like so:
=== "Python"
```python
graph.add_conditional_edges("node_a", routing_function, {True: "node_b", False: "node_c"})
```
=== "Javascript"
```ts
graph.addConditionalEdges("node_a", routingFunction, { true: "node_b", false: "node_c" });
```
In this case, the routing function returns either True or False, which map to `node_b` and `node_c` respectively.
### Solution 2: Update the typing of the router (Python only)
Instead of passing a path map, you can also be explicit about the typing of your routing function by specifying the nodes it can map to using the `Literal` python definition. Here is an example of how to define a routing function in that way:
```python
def routing_function(state: GraphState) -> Literal["node_b","node_c"]:
if state['some_condition'] == True:
return "node_b"
else:
return "node_c"
```
## Why is my graph taking so long to startup?
The LangGraph Studio interacts with a local LangGraph API server. To stay aligned with ongoing updates, the LangGraph API requires regular rebuilding. As a result, you may occasionally experience slight delays when starting up your project.
@@ -0,0 +1,19 @@
# Manage assistants
!!! info "Prerequisites"
- [Assistants Overview](../../../concepts/assistants.md)
LangGraph Studio lets you view, edit, and update your assistants, and allows you to run your graph using these assistant configurations.
## Graph mode
To view your assistants, click the "Manage Assistants" button in the bottom left corner.
This opens a modal for you to view all the assistants for the selected graph. Specify the assistant and its version you would like to mark as "Active", and this assistant will be used when submitting runs.
By default, the "Default configuration" option will be active. This option reflects the default configuration defined in your graph. Edits made to this configuration will be used to update the run-time configuration, but will not update or create a new assistant unless you click "Create new assistant".
## Chat mode
Chat mode enables you to switch through the different assistants in your graph via the dropdown selector at the top of the page. To create, edit, or delete assistants, use Graph mode.
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@@ -7,16 +7,21 @@ LangGraph Studio supports connecting to two types of graphs:
- Graphs deployed on [LangGraph Platform](../../../cloud/quick_start.md)
- Graphs running locally via the [LangGraph Server](../../../tutorials/langgraph-platform/local-server.md).
## Deployed Application
LangGraph Studio is accessed from the LangSmith UI, within the LangGraph Platform Deployments tab.
For applications that are deployed on LangGraph Platform, you can access Studio as part of that deployment. To do so, navigate to the deployment in LangGraph Platform within the LangSmith UI and click the "LangGraph Studio" button.
## Deployed application
For applications that are [deployed](../../quick_start.md) on LangGraph Platform, you can access Studio as part of that deployment. To do so, navigate to the deployment in LangGraph Platform within the LangSmith UI and click the "LangGraph Studio" button.
This will load the Studio UI connected to your live deployment, allowing you to create, read, and update the [threads](../../concepts/threads.md), [assistants](../../../concepts/assistants.md), and [memory](../../../concepts//memory.md) in that deployment.
## Local Development Server
## Local development server
To test your locally running application using LangGraph Studio, ensure your application is set up following [this guide](https://langchain-ai.github.io/langgraph/cloud/deployment/setup/).
!!! info "LangSmith Tracing"
For local development, if you do not wish to have data traced to LangSmith, set `LANGSMITH_TRACING=false` in your application's `.env` file. With tracing disabled, no data will leave your local server.
Next, install the [LangGraph CLI](../../../concepts/langgraph_cli.md):
```
@@ -44,15 +49,14 @@ If successful, you will see the following logs:
>
> - LangGraph Studio Web UI: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024
Once running, you will automatically be directed to LangGraph Studio.
Once running, you will automatically be directed to LangGraph Studio.
For an already running server, access Studio by either:
If your server is already running, to access Studio, either:
1. Directly navigate to the following URL: `https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024`.
2. Within LangSmith, navigate to the LangGraph Platform Deployments tab, click the "LangGraph Studio" button, enter `http://127.0.0.1:2024` and click "Connect".
1. Directly navigate to the following URL: `https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024`.
2. Within LangSmith, navigate to the LangGraph Platform Deployments tab, click the "LangGraph Studio" button, enter `http://127.0.0.1:2024` and click "Connect".
If running your server at a different host or port, simply update the `baseUrl` to match.
If running your server at a different host or port, simply update the `baseUrl` to match.
### (Optional) Attach a debugger
@@ -69,8 +73,8 @@ langgraph dev --debug-port 5678
Then attach your preferred debugger:
=== "VS Code"
Add this configuration to `launch.json`:
```json
Add this configuration to `launch.json`:
`json
{
"name": "Attach to LangGraph",
"type": "debugpy",
@@ -80,23 +84,22 @@ Then attach your preferred debugger:
"port": 5678
}
}
```
Specify the port number you chose in the previous step.
`
Specify the port number you chose in the previous step.
=== "PyCharm"
1. Go to Run → Edit Configurations
2. Click + and select "Python Debug Server"
3. Set IDE host name: `localhost`
4. Set port: `5678` (or the port number you chose in the previous step)
5. Click "OK" and start debugging
=== "PyCharm" 1. Go to Run → Edit Configurations 2. Click + and select "Python Debug Server" 3. Set IDE host name: `localhost` 4. Set port: `5678` (or the port number you chose in the previous step) 5. Click "OK" and start debugging
## Troubleshooting
For issues getting started, please see this [troubleshooting guide](../../../troubleshooting/studio.md).
## Next steps
See the following how-tos for more information on how to use Studio:
See the following guides for more information on how to use Studio:
- [How to manage Assistants](../invoke_studio.md)
- [How to manage Threads](../threads_studio.md)
- [How to create datasets](../datasets_studio.md)
- [How to prompt engineer](../iterate_graph_studio.md)
- [How to locally debug remote traces](../clone_traces_studio.md)
- [Run application](../invoke_studio.md)
- [Manage assistants](./manage_assistants.md)
- [Manage threads](../threads_studio.md)
- [Iterate on prompts](../iterate_graph_studio.md)
- [Debug LangSmith traces](../clone_traces_studio.md)
- [Add node to dataset](../datasets_studio.md)
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@@ -1,4 +1,4 @@
# How to manage Threads
# Manage threads
!!! info "Prerequisites"
@@ -6,25 +6,36 @@
Studio allows you to view threads from the server and edit their state.
## View Threads
## View threads
### Graph mode
1. In the top of the right-hand pane, select the `New Thread` dropdown menu to view existing threads.
1. In the top of the right-hand pane, select the dropdown menu to view existing threads.
1. Select the desired thread, and the thread history will populate in the right-hand side of the page.
1. To create a new thread, select `+ New Thread`.
1. To create a new thread, click `+ New Thread` and [submit a run](../how-tos/invoke_studio.md#graph-mode).
To view more granular information in the thread, drag the slider at the top of the page to the right. To view less information, drag the slider to the left. Additionally, collapse or expand individual turns, nodes, and keys of the state.
Switch between `Pretty` and `JSON` mode for different rendering formats.
### Chat mode
1. View all threads in the right-hand pane of the page.
2. Click the plus button to create a new thread.
2. Select the desired thread and the thread history will populate in the center panel.
3. To create a new thread, click the plus button and [submit a run](../how-tos/invoke_studio.md#chat-mode).
## Edit Thread State
## Edit thread history
### Graph mode
To edit the state of the thread, select "edit node state" next to the desired node. This enables you to edit the node's output and create a new fork of the thread history. For more information about time travel, [see here](../../concepts/time-travel.md).
To edit the state of the thread, select "edit node state" next to the desired node. Edit the node's output as desired and click "fork" to confirm. This will create a new forked run from the checkpoint of the selected node.
If you instead want to re-run the thread from a given checkpoint without editing the state, click the "Re-run from here". This will again create a new forked run from the selected checkpoint. This is useful for re-running with changes that are not specific to the state, such as the selected assistant.
### Chat mode
To edit a human message in the thread, click the edit button below the human message. Edit the message as desired and submit. This will create a new fork of the conversation history. To re-generate an AI message, click the retry icon below the AI message.
## Learn more
For more information about time travel, [see here](../../concepts/time-travel.md).
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@@ -1,8 +1,8 @@
# How to integrate LangGraph into your React application
How to integrate LangGraph into your React application# How to integrate LangGraph into your React application
!!! info "Prerequisites"
!!! info "Prerequisites"
- [LangGraph Platform](../../concepts/langgraph_platform.md)
- [LangGraph Platform](../../concepts/langgraph_platform.md)
- [LangGraph Server](../../concepts/langgraph_server.md)
The `useStream()` React hook provides a seamless way to integrate LangGraph into your React applications. It handles all the complexities of streaming, state management, and branching logic, letting you focus on building great chat experiences.
@@ -113,6 +113,115 @@ export default function App() {
}
```
### Resume a stream after page refresh
The `useStream()` hook can automatically resume an ongoing run upon mounting by setting `reconnectOnMount: true`. This is useful for continuing a stream after a page refresh, ensuring no messages and events generated during the downtime are lost.
```tsx
const thread = useStream<{ messages: Message[] }>({
apiUrl: "http://localhost:2024",
assistantId: "agent",
reconnectOnMount: true,
});
```
By default the ID of the created run is stored in `window.sessionStorage`, which can be swapped by passing a custom storage in `reconnectOnMount` instead. The storage is used to persist the in-flight run ID for a thread (under `lg:stream:${threadId}` key).
```tsx
const thread = useStream<{ messages: Message[] }>({
apiUrl: "http://localhost:2024",
assistantId: "agent",
reconnectOnMount: () => window.localStorage,
});
```
You can also manually manage the resuming process by using the run callbacks to persist the run metadata and the `joinStream` function to resume the stream. Make sure to pass `streamResumable: true` when creating the run; otherwise some events might be lost.
````tsx
import type { Message } from "@langchain/langgraph-sdk";
import { useStream } from "@langchain/langgraph-sdk/react";
import { useCallback, useState, useEffect, useRef } from "react";
export default function App() {
const [threadId, onThreadId] = useSearchParam("threadId");
const thread = useStream<{ messages: Message[] }>({
apiUrl: "http://localhost:2024",
assistantId: "agent",
threadId,
onThreadId,
onCreated: (run) => {
window.sessionStorage.setItem(`resume:${run.thread_id}`, run.run_id);
},
onFinish: (_, run) => {
window.sessionStorage.removeItem(`resume:${run?.thread_id}`);
},
});
// Ensure that we only join the stream once per thread.
const joinedThreadId = useRef<string | null>(null);
useEffect(() => {
if (!threadId) return;
const resume = window.sessionStorage.getItem(`resume:${threadId}`);
if (resume && joinedThreadId.current !== threadId) {
thread.joinStream(resume);
joinedThreadId.current = threadId;
}
}, [threadId]);
return (
<form
onSubmit={(e) => {
e.preventDefault();
const form = e.target as HTMLFormElement;
const message = new FormData(form).get("message") as string;
thread.submit(
{ messages: [{ type: "human", content: message }] },
{ streamResumable: true }
);
}}
>
<div>
{thread.messages.map((message) => (
<div key={message.id}>{message.content as string}</div>
))}
</div>
<input type="text" name="message" />
<button type="submit">Send</button>
</form>
);
}
// Utility method to retrieve and persist data in URL as search param
function useSearchParam(key: string) {
const [value, setValue] = useState<string | null>(() => {
const params = new URLSearchParams(window.location.search);
return params.get(key) ?? null;
});
const update = useCallback(
(value: string | null) => {
setValue(value);
const url = new URL(window.location.href);
if (value == null) {
url.searchParams.delete(key);
} else {
url.searchParams.set(key, value);
}
window.history.pushState({}, "", url.toString());
},
[key]
);
return [value, update] as const;
}
```
### Thread Management
Keep track of conversations with built-in thread management. You can access the current thread ID and get notified when new threads are created:
@@ -127,7 +236,7 @@ const thread = useStream<{ messages: Message[] }>({
threadId: threadId,
onThreadId: setThreadId,
});
```
````
We recommend storing the `threadId` in your URL's query parameters to let users resume conversations after page refreshes.
@@ -158,7 +267,7 @@ export default function HomePage() {
}
```
Under the hood, the `useStream()` hook will use the `streamMode: "messages-tuple"` to receive a stream of messages (i.e. individual LLM tokens) from any LangChain chat model invocations inside your graph nodes. Learn more about messages streaming in the [How to stream messages from your graph](./stream_messages.md) guide.
Under the hood, the `useStream()` hook will use the `streamMode: "messages-tuple"` to receive a stream of messages (i.e. individual LLM tokens) from any LangChain chat model invocations inside your graph nodes. Learn more about messages streaming in the [streaming](../how-tos/streaming.md#messages) guide.
### Interrupts
@@ -476,7 +585,7 @@ The `useStream()` hook provides several callback options to help you respond to
- `onError`: Called when an error occurs.
- `onFinish`: Called when the stream is finished.
- `onUpdateEvent`: Called when an update event is received.
- `onCustomEvent`: Called when a custom event is received. See [Custom events](../../how-tos/streaming.ipynb#custom) to learn how to stream custom events.
- `onCustomEvent`: Called when a custom event is received. See the [streaming](../../how-tos/streaming.md#stream-custom-data) guide to learn how to stream custom events.
- `onMetadataEvent`: Called when a metadata event is received, which contains the Run ID and Thread ID.
## Learn More
+7 -7
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@@ -1,4 +1,4 @@
# How to use threads
# Use threads
!!! info "Prerequisites"
@@ -12,7 +12,7 @@ To run your graph and the state persisted, you must first create a thread.
### Empty thread
To create a new thread, use the [LangGraph SDK](../../concepts/sdk.md) `create` method. See the [Python](../reference/sdk/python_sdk_ref.md#langgraph_sdk.client.ThreadsClient.create) and [JS](../reference/sdk/js_ts_sdk_ref.md#create_3) SDK reference docs for more information.
To create a new thread, 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.ThreadsClient.create) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#create_3) SDK reference docs for more information.
=== "Python"
@@ -58,7 +58,7 @@ Output:
### Copy thread
Alternatively, if you already have a thread in your application whose state you wish to copy, you can use the `copy` method. This will create an independent thread whose history is identical to the original thread at the time of the operation. See the [Python](../reference/sdk/python_sdk_ref.md#langgraph_sdk.client.ThreadsClient.copy) and [JS](../reference/sdk/js_ts_sdk_ref.md#copy) SDK reference docs for more information.
Alternatively, if you already have a thread in your application whose state you wish to copy, you can use the `copy` method. This will create an independent thread whose history is identical to the original thread at the time of the operation. See the [Python](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/#langgraph_sdk.client.ThreadsClient.copy) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#copy) SDK reference docs for more information.
=== "Python"
@@ -237,11 +237,11 @@ Output:
### LangGraph SDK
To list threads, use the [LangGraph SDK](../../concepts/sdk.md) `search` method. This will list the threads in the application that match the provided filters. See the [Python](../reference/sdk/python_sdk_ref.md#langgraph_sdk.client.ThreadsClient.search) and [JS](../reference/sdk/js_ts_sdk_ref.md#search_2) SDK reference docs for more information.
To list threads, use the [LangGraph SDK](../../concepts/sdk.md) `search` method. This will list the threads in the application that match the provided filters. See the [Python](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/#langgraph_sdk.client.ThreadsClient.search) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#search_2) SDK reference docs for more information.
#### Filter by thread status
Use the `status` field to filter threads based on their status. Supported values are `idle`, `busy`, `interrupted`, and `error`. See [here](../reference/sdk/python_sdk_ref.md/?h=thread+status#langgraph_sdk.auth.types.ThreadStatus) for information on each status. For example, to view `idle` threads:
Use the `status` field to filter threads based on their status. Supported values are `idle`, `busy`, `interrupted`, and `error`. See [here](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/?h=thread+status#langgraph_sdk.auth.types.ThreadStatus) for information on each status. For example, to view `idle` threads:
=== "Python"
@@ -480,7 +480,7 @@ Optionally, to view the state of a thread at a given checkpoint, simply pass in
#### Inspect Full Thread History
To view a thread's history, use the `get_history` method. This returns a list of every state the thread experienced. For more information see the [Python](../reference/sdk/python_sdk_ref.md/#langgraph_sdk.client.ThreadsClient.get_history) and [JS](../reference/sdk/js_ts_sdk_ref.md/#gethistory) reference docs.
To view a thread's history, use the `get_history` method. This returns a list of every state the thread experienced. For more information see the [Python](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/python_sdk_ref/?h=thread+status#langgraph_sdk.client.ThreadsClient.get_history) and [JS](https://langchain-ai.github.io/langgraph/cloud/reference/sdk/js_ts_sdk_ref/#gethistory) reference docs.
### LangGraph Platform UI
@@ -488,4 +488,4 @@ You can also view threads in a deployment via the LangGraph Platform UI.
Inside your deployment, select the "Threads" tab. This will load a table of all of the threads in your deployment.
Select a thread to inspect its current state. To view it's full history and for further debugging, open the thread in [LangGraph Studio](../../concepts//langgraph_studio.md).
Select a thread to inspect its current state. To view its full history and for further debugging, open the thread in [LangGraph Studio](../../concepts//langgraph_studio.md).
+8 -18
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@@ -9,31 +9,21 @@ Before you begin, ensure you have the following:
- A [GitHub account](https://github.com/)
- A [LangSmith account](https://smith.langchain.com/) free to sign up
This quickstart uses the [pre-built Python ReAct agent template](https://github.com/langchain-ai/react-agent), which requires the following:
- An API key for [Anthropic](https://console.anthropic.com/)
- An API key for [Tavily](https://app.tavily.com/)
## 1. Create a repository on GitHub
To deploy a LangGraph application to **LangGraph Platform**, your application code must reside in a GitHub repository. Both public and private repositories are supported. For this quickstart, use the [pre-built Python ReAct agent template](https://github.com/langchain-ai/react-agent) for your application:
To deploy an application to **LangGraph Platform**, your application code must reside in a GitHub repository. Both public and private repositories are supported. For this quickstart, use the [`new-langgraph-project` template](https://github.com/langchain-ai/react-agent) for your application:
1. Go to the [ReAct Agent](https://github.com/langchain-ai/react-agent) repository.
1. Go to the [`new-langgraph-project` repository](https://github.com/langchain-ai/new-langgraph-project) or [`new-langgraphjs-project` template](https://github.com/langchain-ai/new-langgraphjs-project).
1. Click the `Fork` button in the top right corner to fork the repository to your GitHub account.
1. Click **Create fork**.
## 2. Deploy to LangGraph Platform
1. Log in to [LangSmith](https://smith.langchain.com/).
1. In the left sidebar, select **LangGraph Platform**.
1. Click the **+ New Deployment** button. A modal will open where you can fill in the required fields.
1. In the left sidebar, select **Deployments**.
1. Click the **+ New Deployment** button. A pane will open where you can fill in the required fields.
1. If you are a first time user or adding a private repository that has not been previously connected, click the **Import from GitHub** button and follow the instructions to connect your GitHub account.
1. Select your ReAct Agent repository.
1. In the **Environment Variables** section, set the following secrets:
- **ANTHROPIC_API_KEY**: Get an API key from [Anthropic](https://console.anthropic.com/).
- **TAVILY_API_KEY**: Get an API key on the [Tavily website](https://app.tavily.com/).
1. Select your New LangGraph Project repository.
1. Click **Submit** to deploy.
This may take about 15 minutes to complete. You can check the status in the **Deployment details** view.
@@ -48,7 +38,7 @@ Once your application is deployed:
LangGraph Studio will open to display your graph.
<figure markdown="1">
[![image](deployment/img/09_langgraph_studio.png){: style="max-height:400px"}](deployment/img/09_langgraph_studio.png)
[![image](deployment/img/langgraph_studio.png){: style="max-height:400px"}](deployment/img/langgraph_studio.png)
<figcaption>
Sample graph run in LangGraph Studio.
</figcaption>
@@ -125,7 +115,7 @@ You can now test the API:
print("\n\n")
```
=== "Javascript SDK"
=== "JavaScript SDK"
1. Install the LangGraph JS SDK
@@ -181,7 +171,7 @@ You can now test the API:
```
## Next Steps
## Next steps
Congratulations! You have deployed an application using LangGraph Platform.
@@ -3818,6 +3818,14 @@
"title": "Filter",
"description": "Optional dictionary of key-value pairs to filter results."
},
"query": {
"type": [
"string",
"null"
],
"title": "Query",
"description": "Query string for semantic/vector search."
},
"limit": {
"type": "integer",
"default": 10,
+17 -2
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@@ -40,9 +40,10 @@ The LangGraph CLI requires a JSON configuration file that follows this [schema](
| Key | Description |
| ------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <span style="white-space: nowrap;">`dependencies`</span> | **Required**. Array of dependencies for LangGraph Platform API server. Dependencies can be one of the following: <ul><li>A single period (`"."`), which will look for local Python packages.</li><li>The directory path where `pyproject.toml`, `setup.py` or `requirements.txt` is located.</br></br>For example, if `requirements.txt` is located in the root of the project directory, specify `"./"`. If it's located in a subdirectory called `local_package`, specify `"./local_package"`. Do not specify the string `"requirements.txt"` itself.</li><li>A Python package name.</li></ul> |
| <span style="white-space: nowrap;">`graphs`</span> | **Required**. Mapping from graph ID to path where the compiled graph or a function that makes a graph is defined. Example: <ul><li>`./your_package/your_file.py:variable`, where `variable` is an instance of `langgraph.graph.state.CompiledStateGraph`</li><li>`./your_package/your_file.py:make_graph`, where `make_graph` is a function that takes a config dictionary (`langchain_core.runnables.RunnableConfig`) and creates an instance of `langgraph.graph.state.StateGraph` / `langgraph.graph.state.CompiledStateGraph`.</li></ul> |
| <span style="white-space: nowrap;">`graphs`</span> | **Required**. Mapping from graph ID to path where the compiled graph or a function that makes a graph is defined. Example: <ul><li>`./your_package/your_file.py:variable`, where `variable` is an instance of `langgraph.graph.state.CompiledStateGraph`</li><li>`./your_package/your_file.py:make_graph`, where `make_graph` is a function that takes a config dictionary (`langchain_core.runnables.RunnableConfig`) and returns an instance of `langgraph.graph.state.StateGraph` or `langgraph.graph.state.CompiledStateGraph`. See [how to rebuild a graph at runtime](../../cloud/deployment/graph_rebuild.md) for more details.</li></ul> |
| <span style="white-space: nowrap;">`auth`</span> | _(Added in v0.0.11)_ Auth configuration containing the path to your authentication handler. Example: `./your_package/auth.py:auth`, where `auth` is an instance of `langgraph_sdk.Auth`. See [authentication guide](../../concepts/auth.md) for details. |
| <span style="white-space: nowrap;">`base_image`</span> | Optional. Base image to use for the LangGraph API server. Defaults to `langchain/langgraph-api` or `langchain/langgraphjs-api`. Use this to pin your builds to a particular version of the langgraph API, such as `"langchain/langgraph-server:0.2"`. See https://hub.docker.com/r/langchain/langgraph-server/tags for more details. (added in `langgraph-cli==0.2.8`) |
| <span style="white-space: nowrap;">`image_distro`</span> | Optional. Linux distribution for the base image. Must be either `"debian"` or `"wolfi"`. If omitted, defaults to `"debian"`. Available in `langgraph-cli>=0.2.11`.|
| <span style="white-space: nowrap;">`env`</span> | Path to `.env` file or a mapping from environment variable to its value. |
| <span style="white-space: nowrap;">`store`</span> | Configuration for adding semantic search and/or time-to-live (TTL) to the BaseStore. Contains the following fields: <ul><li>`index` (optional): Configuration for semantic search indexing with fields `embed`, `dims`, and optional `fields`.</li><li>`ttl` (optional): Configuration for item expiration. An object with optional fields: `refresh_on_read` (boolean, defaults to `true`), `default_ttl` (float, lifespan in **minutes**, defaults to no expiration), and `sweep_interval_minutes` (integer, how often to check for expired items, defaults to no sweeping).</li></ul> |
| <span style="white-space: nowrap;">`ui`</span> | Optional. Named definitions of UI components emitted by the agent, each pointing to a JS/TS file. (added in `langgraph-cli==0.1.84`) |
@@ -57,7 +58,7 @@ The LangGraph CLI requires a JSON configuration file that follows this [schema](
| Key | Description |
| ------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <span style="white-space: nowrap;">`graphs`</span> | **Required**. Mapping from graph ID to path where the compiled graph or a function that makes a graph is defined. Example: <ul><li>`./src/graph.ts:variable`, where `variable` is an instance of `CompiledStateGraph`</li><li>`./src/graph.ts:makeGraph`, where `makeGraph` is a function that takes a config dictionary (`LangGraphRunnableConfig`) and creates an instance of `StateGraph` / `CompiledStateGraph`.</li></ul> |
| <span style="white-space: nowrap;">`graphs`</span> | **Required**. Mapping from graph ID to path where the compiled graph or a function that makes a graph is defined. Example: <ul><li>`./src/graph.ts:variable`, where `variable` is an instance of `CompiledStateGraph`</li><li>`./src/graph.ts:makeGraph`, where `makeGraph` is a function that takes a config dictionary (`LangGraphRunnableConfig`) and returns an instance of `StateGraph` or `CompiledStateGraph`. See [how to rebuild a graph at runtime](../../cloud/deployment/graph_rebuild.md) for more details.</li></ul> |
| <span style="white-space: nowrap;">`env`</span> | Path to `.env` file or a mapping from environment variable to its value. |
| <span style="white-space: nowrap;">`store`</span> | Configuration for adding semantic search and/or time-to-live (TTL) to the BaseStore. Contains the following fields: <ul><li>`index` (optional): Configuration for semantic search indexing with fields `embed`, `dims`, and optional `fields`.</li><li>`ttl` (optional): Configuration for item expiration. An object with optional fields: `refresh_on_read` (boolean, defaults to `true`), `default_ttl` (float, lifespan in **minutes**, defaults to no expiration), and `sweep_interval_minutes` (integer, how often to check for expired items, defaults to no sweeping).</li></ul> |
| <span style="white-space: nowrap;">`node_version`</span> | Specify `node_version: 20` to use LangGraph.js. |
@@ -79,6 +80,20 @@ The LangGraph CLI requires a JSON configuration file that follows this [schema](
}
```
#### Using Wolfi Base Images
You can specify the Linux distribution for your base image using the `image_distro` field. Valid options are `debian` or `wolfi`. Wolfi is the recommended option as it provides smaller and more secure images. This is available in `langgraph-cli>=0.2.11`.
```json
{
"dependencies": ["."],
"graphs": {
"chat": "./chat/graph.py:graph"
},
"image_distro": "wolfi"
}
```
#### Adding semantic search to the store
All deployments come with a DB-backed BaseStore. Adding an "index" configuration to your `langgraph.json` will enable [semantic search](../deployment/semantic_search.md) within the BaseStore of your deployment.
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@@ -123,3 +123,12 @@ Defaults to `''`.
Set `REDIS_CLUSTER` to `True` to enable Redis Cluster mode. When enabled, the system will connect to Redis using cluster mode. This is useful when connecting to a Redis Cluster deployment.
Defaults to `False`.
## `MOUNT_PREFIX`
!!! info "Only Allowed in Self-Hosted Deployments"
The `MOUNT_PREFIX` environment variable is only allowed in Self-Hosted Deployment models, LangGraph Platform SaaS will not allow this environment variable.
Set `MOUNT_PREFIX` to serve the LangGraph Server under a specific path prefix. This is useful for deployments where the server is behind a reverse proxy or load balancer that requires a specific path prefix.
For example, if the server is to be served under `https://example.com/langgraph`, set `MOUNT_PREFIX` to `/langgraph`.
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@@ -46,7 +46,7 @@ While a router allows an LLM to make a single decision, more complex agent archi
This architecture allows for more complex and flexible agent behaviors, going beyond simple routing to enable dynamic problem-solving with multiple steps. Unlike the original [paper](https://arxiv.org/abs/2210.03629), today's agents rely on LLMs' [tool calling](#tool-calling) capabilities and operate on a list of [messages](./low_level.md#why-use-messages).
In LangGraph, you can use the prebuilt [agent](../agent/overview.md) to get started with tool-calling agents.
In LangGraph, you can use the prebuilt [agent](../agents/agents.md#2-create-an-agent) to get started with tool-calling agents.
### Tool calling
@@ -75,7 +75,7 @@ Effective [memory management](../how-tos/memory.ipynb) enhances an agent's abili
### Planning
In a tool-calling [agent](../agent/overview.md), an LLM is called repeatedly in a while-loop. At each step the agent decides which tools to call, and what the inputs to those tools should be. Those tools are then executed, and the outputs are fed back into the LLM as observations. The while-loop terminates when the agent decides it has enough information to solve the user request and it is not worth calling any more tools.
In a tool-calling [agent](../agents/overview.md#what-is-an-agent), an LLM is called repeatedly in a while-loop. At each step the agent decides which tools to call, and what the inputs to those tools should be. Those tools are then executed, and the outputs are fed back into the LLM as observations. The while-loop terminates when the agent decides it has enough information to solve the user request and it is not worth calling any more tools.
## Custom agent architectures
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@@ -32,7 +32,7 @@ Below are examples of directory structures for Python and JavaScript application
│ ├── utils # utilities for your graph
│ │ ├── __init__.py
│ │ ├── tools.py # tools for your graph
│ │ ├── nodes.py # node functions for you graph
│ │ ├── nodes.py # node functions for your graph
│ │ └── state.py # state definition of your graph
│ ├── __init__.py
│ └── agent.py # code for constructing your graph
+3 -3
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@@ -15,15 +15,15 @@ Imagine a general-purpose writing agent built on a common graph architecture. Wh
Assistants build on the LangGraph open source concept of [configuration](low_level.md#configuration).
While configuration is available in the open source LangGraph library, assistants are only present in [LangGraph Platform](langgraph_platform.md).
This is due to the fact that Assistants are tightly coupled to your deployed graph. Upon deployment, LangGraph Server will automatically create a default assistant for each graph using the graph's default configuration settings.
This is due to the fact that assistants are tightly coupled to your deployed graph. Upon deployment, LangGraph Server will automatically create a default assistant for each graph using the graph's default configuration settings.
In practice, an assistant is just an _instance_ of a graph with a specific configuration. Therefore, multiple assistants can reference the same graph but can contain different configurations (e.g. prompts, models, tools). The LangGraph Server API provides several endpoints for creating and managing assistants. See the [API reference](../cloud/reference/api/api_ref.html) and [this how-to](../cloud/how-tos/configuration_cloud.md) for more details on how to create assistants.
## Versioning assistants
Assistants support versioning to track changes over time.
Once you've created an assistant, subsequent edits to that assistant will create new versions. See [this how-to](../cloud/how-tos/assistant_versioning.md) for more details on how to manage assistant versions.
Once you've created an assistant, subsequent edits to that assistant will create new versions. See [this how-to](../cloud/how-tos/configuration_cloud.md#create-a-new-version-for-your-assistant) for more details on how to manage assistant versions.
## Learn more
* The LangGraph Cloud API provides several endpoints for creating and managing assistants their versions. See the [API reference](../../cloud/reference/api/api_ref.html#tag/assistants) for more details.
* The LangGraph Cloud API provides several endpoints for creating and managing assistants and their versions. See the [API reference](../cloud/reference/api/api_ref.html#tag/assistants) for more details.
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@@ -198,7 +198,7 @@ async def add_owner(
You can register handlers for specific resources and actions by chaining the resource and action names together with the [`@auth.on`](../cloud/reference/sdk/python_sdk_ref.md#langgraph_sdk.auth.Auth.on) decorator.
When a request is made, the most specific handler that matches that resource and action is called. Below is an example of how to register handlers for specific resources and actions. For the following setup:
1. Authenticated users are able to create threads, read thread, create runs on threads
1. Authenticated users are able to create threads, read threads, and create runs on threads
2. Only users with the "assistants:create" permission are allowed to create new assistants
3. All other endpoints (e.g., e.g., delete assistant, crons, store) are disabled for all users.
+5 -5
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@@ -40,8 +40,8 @@ For more information, please see:
## Self-Hosted Data Plane
!!! important "Beta"
The Self-Hosted Data Plane deployment option is currently in beta stage.
!!! info "Important"
The Self-Hosted Data Plane deployment option is currently in beta stage and requires an [Enterprise](../concepts/plans.md) plan.
The [Self-Hosted Data Plane](./langgraph_self_hosted_data_plane.md) deployment option is a "hybrid" model for deployment where we manage the [control plane](./langgraph_control_plane.md) in our cloud and you manage the [data plane](./langgraph_data_plane.md) in your cloud. This option provides a way to securely manage your data plane infrastructure, while offloading control plane management to us.
@@ -56,10 +56,10 @@ For more information, please see:
## Self-Hosted Control Plane
!!! important "Beta"
The Self-Hosted Control Plane deployment option is currently in beta stage.
!!! info "Important"
The Self-Hosted Control Plane deployment option is currently in beta stage and requires an [Enterprise](../concepts/plans.md) plan.
The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deployment option is a fully self-hosted model for deployment where you manage the [control plane](./langgraph_control_plane.md) and [data plane](./langgraph_data_plane.md) in your cloud. This option give you full control and responsibility of the control plane and data plane infrastructure.
The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deployment option is a fully self-hosted model for deployment where you manage the [control plane](./langgraph_control_plane.md) and [data plane](./langgraph_data_plane.md) in your cloud. This option gives you full control and responsibility of the control plane and data plane infrastructure.
Build a Docker image using the [LangGraph CLI](./langgraph_cli.md) and deploy your LangGraph Server from the [control plane UI](./langgraph_control_plane.md#control-plane-ui).
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@@ -59,8 +59,8 @@ Yes! You can use LangGraph with any LLMs. The main reason we use LLMs that suppo
Yes! LangGraph is totally ambivalent to what LLMs are used under the hood. The main reason we use closed LLMs in most of the tutorials is that they seamlessly support tool calling, while OSS LLMs often don't. But tool calling is not necessary (see [this section](#does-langgraph-work-with-llms-that-dont-support-tool-calling)) so you can totally use LangGraph with OSS LLMs.
## Can I use LangGraph Studio without logging to LangSmith
## Can I use LangGraph Studio without logging in to LangSmith
Yes! You can use the [development version of LangGraph Server](../tutorials/langgraph-platform/local-server.md) to run the backend locally.
This will connect to the studio frontend hosted as part of LangSmith.
If you set an environment variable of `LANGSMITH_TRACING=false` then no traces will be sent to LangSmith.
If you set an environment variable of `LANGSMITH_TRACING=false`, then no traces will be sent to LangSmith.
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@@ -186,7 +186,7 @@ When declaring an `entrypoint`, you can request access to additional parameters
| Parameter | Description |
|--------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **previous** | Access the the state associated with the previous `checkpoint` for the given thread. See [short-term-memory](#short-term-memory). |
| **previous** | Access the state associated with the previous `checkpoint` for the given thread. See [short-term-memory](#short-term-memory). |
| **store** | An instance of [BaseStore][langgraph.store.base.BaseStore]. Useful for [long-term memory](../how-tos/use-functional-api.md#long-term-memory). |
| **writer** | Use to access the StreamWriter when working with Async Python < 3.11. See [streaming with functional API for details](../how-tos/use-functional-api.md#streaming). |
| **config** | For accessing run time configuration. See [RunnableConfig](https://python.langchain.com/docs/concepts/runnables/#runnableconfig) for information. |
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@@ -19,6 +19,7 @@ From the control plane UI, you can:
- Update a deployment.
- Update environment variables for a deployment.
- View build and server logs of a deployment.
- View deployment metrics like CPU and memory usage.
- Delete a deployment.
The Control Plane UI is embedded in [LangSmith](https://docs.smith.langchain.com/langgraph_cloud).
@@ -47,17 +48,22 @@ This section describes various features of the control plane.
For simplicity, the control plane offers two deployment types with different resource allocations: `Development` and `Production`.
| **Deployment Type** | **CPU** | **Memory** | **Scaling** |
|---------------------|---------|------------|---------------------|
| Development | 1 CPU | 1 GB | Up to 1 container |
| Production | 2 CPU | 2 GB | Up to 10 containers |
| **Deployment Type** | **CPU/Memory** | **Scaling** | **Database** |
|---------------------|-----------------|---------------------|----------------------------------------------------------------------------------|
| Development | 1 CPU, 1 GB RAM | Up to 1 container | 10 GB disk, no backups |
| Production | 2 CPU, 2 GB RAM | Up to 10 containers | Autoscaling disk, automatic backups, highly available (multi-zone configuration) |
CPU and memory resources are per container.
!!! info "For [Cloud SaaS](../concepts/langgraph_cloud.md)"
!!! warning "Immutable Deployment Type"
Once a deployment is created, the deployment type cannot be changed.
!!! info "Resource Customization"
For `Production` type deployments, resources can be manually increased on a case-by-case basis depending on use case and capacity constraints. Contact support@langchain.dev to request an increase in resources.
!!! info
For `Development` types deployments, database disk size can be manually increased on a case-by-case basis depending on use case and capacity constraints. For most use cases, [TTLs](../how-tos/ttl/configure_ttl.md) should be configured to manage disk usage. Contact support@langchain.dev to request an increase in resources.
Resources for [Self-Hosted Data Plane](../concepts/langgraph_self_hosted_data_plane.md) and [Self-Hosted Control Plane](../concepts/langgraph_self_hosted_control_plane.md) deployments can be fully customized.
### Database Provisioning
@@ -83,6 +89,15 @@ Infrastructure for deployments and revisions are provisioned and deployed asynch
The control plane and [LangGraph Data Plane](./langgraph_data_plane.md) "listener" application coordinate to achieve asynchronous deployments.
### Monitoring
After a deployment is ready, the control plane monitors the deployment and records various metrics, such as:
- CPU and memory usage of the deployment.
- Number of container restarts.
These metrics are displayed as charts in the Control Plane UI.
### LangSmith Integration
A [LangSmith](https://docs.smith.langchain.com/) tracing project is automatically created for each deployment. The tracing project has the same name as the deployment. When creating a deployment, the `LANGCHAIN_TRACING` and `LANGSMITH_API_KEY`/`LANGCHAIN_API_KEY` environment variables do not need to be specified; they are set automatically by the control plane.
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@@ -9,7 +9,7 @@ The term "data plane" is used broadly to refer to [LangGraph Servers](./langgrap
## Server Infrastructure
In addition to the [LangGraph Server](./langgraph_server.md) itself, the following infrastructure for each server are also included in the broad definition of "data plane":
In addition to the [LangGraph Server](./langgraph_server.md) itself, the following infrastructure components for each server are also included in the broad definition of "data plane":
- Postgres
- Redis
@@ -44,7 +44,7 @@ All runs in a LangGraph Server are executed by a pool of background workers that
### Ephemeral metadata
Runs in a LangGraph Server may be retried for specific failures (currently only for transient Postgres errors encountered during the run). In order to limit the number of retries (currently limited to 3 attempts per run) we record the attempt number in a Redis string when is picked up. This contains no run-specific info other than its ID, and expires after a short delay.
Runs in a LangGraph Server may be retried for specific failures (currently only for transient Postgres errors encountered during the run). In order to limit the number of retries (currently limited to 3 attempts per run) we record the attempt number in a Redis string when it is picked up. This contains no run-specific info other than its ID, and expires after a short delay.
## Data Plane Features
@@ -62,7 +62,7 @@ For CPU utilization, the autoscaler targets 75% utilization. This means the auto
For number of pending runs, the autoscaler targets 10 pending runs. For example, if the current number of containers is 1, but the number of pending runs in 20, the autoscaler will scale up the deployment to 2 containers (20 pending runs / 2 containers = 10 pending runs per container).
Each metric is computed independently and the autoscaler will determine the scaling action based on the metric that results in the most number of containers.
Each metric is computed independently and the autoscaler will determine the scaling action based on the metric that results in the largest number of containers.
Scale down actions are delayed for 30 minutes before any action is taken. In other words, if the autoscaler decides to scale down a deployment, it will first wait for 30 minutes before scaling down. After 30 minutes, the metrics are recomputed and the deployment will scale down if the recomputed metrics result in a lower number of containers than the current number. Otherwise, the deployment remains scaled up. This "cool down" period ensures that deployments do not scale up and down too frequently.
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@@ -5,18 +5,17 @@ search:
# LangGraph Platform
**LangGraph Platform** is a commercial solution for deploying agentic applications to production, built on the open-source [LangGraph framework](../index.md).
<div align="center"><iframe width="560" height="315" src="https://www.youtube.com/embed/pfAQxBS5z88?si=XGS6Chydn6lhSO1S" title="What is LangGraph Platform?" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></div>
Develop, deploy, scale, and manage agents with **LangGraph Platform** — the purpose-built platform for long-running, agentic workflows.
!!! tip "Get started with LangGraph Platform"
Check out the [LangGraph Platform quickstart](../cloud/quick_start.md) for instructions on how to set up and use LangGraph Platform to do a cloud deployment.
Check out the [LangGraph Platform quickstart](../tutorials/langgraph-platform/local-server.md) for instructions on how to use LangGraph Platform to run a LangGraph application locally.
## Why use LangGraph Platform?
LangGraph Platform handles common issues that arise when deploying LLM applications to production, allowing you to focus on agent logic instead of managing server infrastructure.
<div align="center"><iframe width="560" height="315" src="https://www.youtube.com/embed/pfAQxBS5z88?si=XGS6Chydn6lhSO1S" title="What is LangGraph Platform?" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></div>
LangGraph Platform makes it easy to get your agent running in production — whether its built with LangGraph or another framework — so you can focus on your app logic, not infrastructure. Deploy with one click to get a live endpoint, and use our robust APIs and built-in task queues to handle production scale.
- **[Streaming Support](../cloud/concepts/streaming.md)**: As agents grow more sophisticated, they often benefit from streaming both token outputs and intermediate states back to the user. Without this, users are left waiting for potentially long operations with no feedback. LangGraph Server provides multiple streaming modes optimized for various application needs.
@@ -32,8 +31,6 @@ LangGraph Platform handles common issues that arise when deploying LLM applicati
- **[Human-in-the-loop support](../cloud/how-tos/human_in_the_loop_breakpoint.md)**: In many applications, users require a way to intervene in agent processes. LangGraph Server provides specialized endpoints for human-in-the-loop scenarios, simplifying the integration of manual oversight into agent workflows.
By using LangGraph Platform, you gain access to a robust, scalable deployment solution that mitigates these challenges, saving you the effort of implementing and maintaining them manually. This allows you to focus more on building effective agent behavior and less on solving deployment infrastructure issues.
- **[LangGraph Studio](./langgraph_studio.md)**: Enables visualization, interaction, and debugging of agentic systems that implement the LangGraph Server API protocol. Studio also integrates with LangSmith to enable tracing, evaluation, and prompt engineering.
## Deployment
There are several ways to deploy on LangGraph Platform. For more information, see [Deployment options](./deployment_options.md).
- **[Deployment](./deployment_options.md)**: There are four ways to deploy on LangGraph Platform: [Cloud SaaS](../concepts/langgraph_cloud.md), [Self-Hosted Data Plane](../concepts/langgraph_self_hosted_data_plane.md), [Self-Hosted Control Plane](../concepts/langgraph_self_hosted_control_plane.md), and [Standalone Container](../concepts/langgraph_standalone_container.md).
@@ -2,17 +2,19 @@
There are two versions of the self-hosted deployment: [Self-Hosted Data Plane](./deployment_options.md#self-hosted-data-plane) and [Self-Hosted Control Plane](./deployment_options.md#self-hosted-control-plane).
!!! important "Beta"
The Self-Hosted Control Plane deployment option is currently in beta stage.
!!! info "Important"
The Self-Hosted Control Plane deployment option is currently in beta stage and requires an [Enterprise](../../concepts/plans.md) plan.
## Requirements
- You use `langgraph-cli` and/or [LangGraph Studio](./langgraph_studio.md) app to test graph locally.
- You use `langgraph build` command to build image.
- You have a Self-Hosted LangSmith instance deployed.
- You are using Ingress for your LangSmith instance. All agents will be deployed as Kubernetes services behind this ingress.
## Self-Hosted Control Plane
The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deployment option is a fully self-hosted model for deployment where you manage the [control plane](./langgraph_control_plane.md) and [data plane](./langgraph_data_plane.md) in your cloud. This option give you full control and responsibility of the control plane and data plane infrastructure.
The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deployment option is a fully self-hosted model for deployment where you manage the [control plane](./langgraph_control_plane.md) and [data plane](./langgraph_data_plane.md) in your cloud. This option gives you full control and responsibility of the control plane and data plane infrastructure.
| | [Control plane](../concepts/langgraph_control_plane.md) | [Data plane](../concepts/langgraph_data_plane.md) |
|-------------------|-------------------|------------|
@@ -29,4 +31,4 @@ The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deploy
- **Kubernetes**: The Self-Hosted Control Plane deployment option supports deploying control plane and data plane infrastructure to any Kubernetes cluster.
!!! tip
If you would like to deploy to Kubernetes, you can use this [Helm chart](https://github.com/langchain-ai/helm/blob/main/charts/langgraph-cloud/README.md).
If you would like to enable this on your LangSmith instance, please follow the [Self-Hosted Control Plane deployment guide](../cloud/deployment/self_hosted_control_plane.md).

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