Pull Requests langchain-ai/langchain

chore(model-profiles): refresh model profile data integration infra model-profiles internal openrouter bot size: S

#37802 opened 2026-05-31 09:03 by langchain-model-profile-bot[bot]

RFC: track anthropic service tier and geo tokens integration anthropic internal size: M

#37759 opened 2026-05-28 20:56 by baskaryan

feat(langchain): project subagent runs onto typed run.subagents channel langchain dependencies feature internal size: L

#37739 opened 2026-05-28 14:15 by nick-hollon-lc

feat(core, anthropic, openai): aclose() lifecycle + latched fallbacks integration core feature anthropic openai internal size: L

#37718 opened 2026-05-27 19:31 by baskaryan

fix(langchain): neutralize `write_todos` tool message langchain fix internal size: S

#37698 opened 2026-05-26 15:23 by nick-hollon-lc

feat(groq): map context-length errors to `ContextOverflowError` integration feature groq external size: S new-contributor

#37676 opened 2026-05-25 01:14 by adityasingh2400

feat(langchain): add `interrupt_mode` and `when` predicate to `HumanInTheLoopMiddleware` langchain feature internal size: S

#37579 opened 2026-05-20 15:07 by sydney-runkle

feat(openai): add ChatGPT OAuth-backed `ChatOpenAICodex` chat model integration feature openai internal size: XL

#37569 opened 2026-05-19 22:33 by open-swe[bot]

fix(core): preserve message classes in `Serializable` envelopes core fix external trusted-contributor size: S

#37471 opened 2026-05-16 14:09 by T1mn

[codex] Include tool_call_id on tool start events core external size: S new-contributor

#37445 opened 2026-05-15 08:07 by MukundaKatta

feat(langchain): conditional interrupts via `interrupt_when` predicate langchain feature internal size: M

#37367 opened 2026-05-12 23:07 by nick-hollon-lc

feat(model-profiles): add input/output MIME type fields to `ModelProfile` integration core feature model-profiles anthropic openai perplexity internal size: XL

#37351 opened 2026-05-11 18:25 by open-swe[bot]

feat: Scoping for conditional interrupts feature internal size: M

#37243 opened 2026-05-07 21:50 by bracesproul

feat(langchain): `SecretMiddleware` for tool-call credential detection langchain feature internal size: L

#37192 opened 2026-05-05 15:33 by baskaryan

feat(langchain): `rejection_response` override for `HumanInTheLoopMiddleware` langchain feature internal size: L

#37167 opened 2026-05-03 18:56 by mdrxy

feat(openai): support apply_patch built-in tool integration core feature openai external size: M new-contributor

#37157 opened 2026-05-03 01:55 by nidhi1603

perf(core): eliminate redundant schema computation in tool infrastructure core performance internal size: XL

#37101 opened 2026-04-30 15:02 by sydney-runkle

feat(anthropic): add `AnthropicToolIdSanitizationMiddleware` integration feature anthropic internal size: XL

#37096 opened 2026-04-30 07:04 by mdrxy

feat(mistralai): surface citation metadata from chat responses integration feature mistralai external size: S new-contributor

#37008 opened 2026-04-25 22:55 by JulienRabault

fix(core): use parsed mime_type for base64 file blocks in openai translator core fix external size: S new-contributor

#36940 opened 2026-04-22 07:21 by anmolg1997

perf(core): defer tracer imports in runnables/base.py to call time core langchain dependencies performance internal size: M

#36920 opened 2026-04-21 17:18 by sydney-runkle

feat(langchain): `MiddlewareTransformer` for agent streams langchain feature internal size: M

#36898 opened 2026-04-20 18:36 by nick-hollon-lc

feat(langchain): AgentStreamer for create_agent graphs integration core langchain standard-tests dependencies feature anthropic openai internal size: M

#36897 opened 2026-04-20 18:15 by nick-hollon-lc

feat(langchain): add RejectSystemMessagesMiddleware guardrail langchain feature internal size: M

#36825 opened 2026-04-16 14:56 by open-swe[bot]

docs: security add threat models for langchain-core and langchain_v1 documentation internal size: L

#36642 opened 2026-04-09 22:03 by jkennedyvz

fix(langchain): normalise provider-specific content blocks in ModelFallbackMiddleware langchain fix external size: M new-contributor

#36601 opened 2026-04-07 22:52 by Vishwaspatel2401

fix(openrouter): support `default_headers` for custom HTTP header injection integration fix external openrouter size: S

#36582 opened 2026-04-07 10:39 by untilhamza

chore: Bump mypy version to 1.20 in core, langchain_v1, text-splitters and standard-tests core langchain standard-tests infra text-splitters dependencies external trusted-contributor size: XS

#36470 opened 2026-04-02 16:32 by cbornet

fix(openai): add support for logprobs when using the response api integration fix openai external size: S new-contributor

#36371 opened 2026-03-30 10:23 by HOZHENWAI

fix(langchain): avoid shared process-group kill in shell middleware langchain fix external size: S

#36359 opened 2026-03-29 23:08 by yashodipmore