Pull Requests langchain-ai/langchain

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): prefer metadata `ls_provider` in SummarizationMiddleware token check langchain fix external trusted-contributor size: S

#36604 opened 2026-04-08 06:20 by michaelnchin

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(openrouter): merge fragmented `reasoning_details` in streaming integration fix external openrouter size: M new-contributor

#36401 opened 2026-03-31 16:25 by X-iZhang

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

docs(security): add initial threat model for langchain monorepo documentation internal size: M

#36317 opened 2026-03-27 20:33 by jkennedyvz

fix(fireworks): retain root client refs to prevent aiohttp session leak integration fix fireworks internal size: S

#36202 opened 2026-03-24 19:20 by mdrxy

fix(openai): handle unrecognized server tool names in _consolidate_calls integration fix openai external size: S new-contributor

#36187 opened 2026-03-24 06:54 by Senna1960321

fix(core): prevent cross-type content block merging in `merge_lists` core fix internal size: XS

#35984 opened 2026-03-17 03:30 by mdrxy

fix(core,openai): fix v1 streaming tool calls dropped for chat completions integration core fix openai internal size: M

#35983 opened 2026-03-17 03:29 by mdrxy

core: fix _parse_google_docstring mishandling continuation lines with colons core external size: S

#35680 opened 2026-03-09 02:49 by alvinttang

fix(langchain-classic): fix Chain.save() regression from dict-to-model_dump migration fix langchain-classic external trusted-contributor size: S

#35667 opened 2026-03-08 17:26 by keenborder786

fix: off-by-one error in RecursiveJsonSplitter.split_json text-splitters fix external size: XS

#35649 opened 2026-03-08 09:28 by gambletan

fix(core): improve langsmith loader error messages core fix external size: S

#35648 opened 2026-03-08 08:58 by dvy246

fix: path traversal false positive on filenames containing .. langchain external size: L

#35644 opened 2026-03-08 07:30 by MaxwellCalkin

fix: wrong error message and swallowed JSONDecodeError in tool.py core fix external size: XS

#35642 opened 2026-03-08 04:54 by jnMetaCode

fix: output parser bugs in xml.py and pydantic.py core external size: XS

#35641 opened 2026-03-08 04:54 by jnMetaCode

fix(core): fix `trim_messages` misclassification of per-message token_counter core fix external size: S

#35630 opened 2026-03-07 07:46 by gautamvarmadatla

docs(core): clarify supported formats for multimodal inputs in ModelProfile documentation core external size: XS missing-issue-link

#35628 opened 2026-03-07 07:12 by qinqining

fix(anthropic): omit timeout from client_params when not set by user integration fix anthropic external trusted-contributor size: XS

#35619 opened 2026-03-07 01:12 by keenborder786

fix(openai): omit timeout from client_params when not set by user integration langchain fix langchain-classic openai external trusted-contributor size: XS

#35616 opened 2026-03-07 00:58 by keenborder786

fix(core): prevent inflated token counts when merging streaming usage_metadata core fix external size: S

#35615 opened 2026-03-07 00:42 by ShresthSamyak

fix(openai): catch LengthFinishReasonError in structured output calls integration fix openai external size: S

#35569 opened 2026-03-05 05:30 by weiguangli-io

chore: type safe streaming poc langchain infra dependencies internal size: S

#35541 opened 2026-03-03 22:17 by sydney-runkle

fix(langchain)!: default to `google_genai` instead of `google_vertexai` langchain breaking fix internal size: XS

#35537 opened 2026-03-03 15:40 by mdrxy

fix(core): prevent duplicate ids kwarg in add_documents and aadd_documents core fix external size: S

#35534 opened 2026-03-03 15:32 by abdelhadi703

fix(core): properly merge fragmented tool_call_chunks in AIMessageChunk core fix external size: M

#35517 opened 2026-03-02 12:58 by A404coder