Pull Requests langchain-ai/langchain

feat(langchain): MCP Apps (SEP-1865) tool visibility in langchain.mcp langchain feature internal size: M

#40722 opened 2026-09-21 21:37 by josiahcoad-langchain

fix(typesafe): reject empty `questions` in `TypeSafeClassifier` integration fix external size: XS typesafe

#40707 opened 2026-09-21 10:09 by ChampionsZhang

Langchain voice langchain dependencies internal size: XL

#40655 opened 2026-09-18 23:43 by carolinedivittorio

refactor(typesafe): match TypeSafe request input integration refactor internal size: L typesafe

#40577 opened 2026-09-17 23:08 by sydney-runkle

feat(typesafe): experimental classifier based TsToolSelectorMiddleware integration dependencies feature internal size: L typesafe

#40572 opened 2026-09-17 20:33 by thushanth-bengre-langchain

feat(langchain): implement `UnsupportedContentMiddleware` langchain feature internal size: M

#40559 opened 2026-09-17 14:21 by ccurme

feat(typesafe): agent middleware powered by TypeSafe classifiers integration dependencies github_actions feature internal size: XL

#40556 opened 2026-09-17 13:36 by sydney-runkle

refactor(typesafe): mirror SDK request and client configuration integration dependencies github_actions refactor internal size: XL typesafe

#40550 opened 2026-09-17 12:56 by sydney-runkle

feat(typesafe): experimental classifier based `SkillsMiddleware` integration dependencies feature internal size: L typesafe

#40544 opened 2026-09-17 09:28 by hntrl

feat(openai): discover Azure workload identity integration dependencies feature openai internal size: S

#40532 opened 2026-09-16 19:58 by hntrl

fix(langchain): repair invalid tool calls in `create_agent` langchain fix internal size: M

#40530 opened 2026-09-16 16:35 by ccurme

test(core): skip prompt-loading symlink tests when symlinks are unavailable core tests external size: XS new-contributor

#40405 opened 2026-09-11 15:20 by iam-kira

feat(openrouter,fireworks): support `response_format` on invoke and bind_tools integration feature fireworks internal openrouter size: M

#40390 opened 2026-09-10 21:15 by mdrxy

feat(anthropic): forward credentials and auth_token to the anthropic client integration feature anthropic external size: S new-contributor

#40338 opened 2026-09-09 19:46 by Larry-Osakwe

fix(langchain): clarify `runtime.tools` test contract langchain fix external size: XS

#40312 opened 2026-09-09 03:19 by ChampionsZhang

fix(standard-tests): align sandbox contract assertions standard-tests fix internal size: S

#40283 opened 2026-09-08 11:55 by npentrel

fix(deepseek): preserve reasoning_content in request payload integration fix deepseek external size: S new-contributor

#40254 opened 2026-09-07 04:04 by tftz-ll

fix(core): avoid mutating message content in Anthropic translator core fix external size: S new-contributor

#40213 opened 2026-09-05 05:45 by revanth-045

fix: handle reasoning model output tags in structured output parsing core fix size: M

#40147 opened 2026-09-02 14:34 by visnu64

fix(langchain): filter unsupported model inputs langchain fix internal size: S

#39921 opened 2026-08-26 00:03 by mdrxy

fix(core): count image tokens from image dimensions core fix external size: L new-contributor

#39912 opened 2026-08-25 10:29 by saike148

feat(openrouter): classify model API errors integration feature internal openrouter size: M

#39884 opened 2026-08-24 19:06 by ccurme

fix(text-splitters): recognize custom header patterns when merging nested headers text-splitters fix external size: M new-contributor

#39823 opened 2026-08-21 07:49 by dlwldn30

fix(langchain): drop foreign provider built-in tools on model fallback langchain fix internal size: M

#39788 opened 2026-08-20 07:16 by ramon-langchain

fix(anthropic): preserve `response_metadata` when `stream_usage` is disabled integration fix anthropic external size: S new-contributor

#39740 opened 2026-08-19 02:26 by JessYanCoding

feat(core): update llm trace metadata based on gateway information core feature internal size: S

#39721 opened 2026-08-18 16:31 by eyurtsev

fix(openrouter): close `httpx` clients created for attribution headers fix openrouter

#39698 opened 2026-08-17 17:09 by HaoChiBao

style: upgrade to ruff 0.16, mypy 2.3, ty 0.0.78 core langchain standard-tests text-splitters dependencies langchain-classic linting external trusted-contributor size: M

#39652 opened 2026-08-14 14:12 by cbornet

feat(model-profiles): add `check-augmentations` CI command and `[extra_models]` table for stale override detection integration github_actions feature model-profiles anthropic fireworks openai internal size: L

#39605 opened 2026-08-12 05:34 by mdrxy

fix(core): fix issues around `Required/NotRequired` in TypedDict tools core fix internal size: S

#39336 opened 2026-08-07 19:18 by imnishitha