Initial release
chore(langchain_v1): bump release version (#33440)
chore(langchain_v1): improve error message (#33433)
chore(langchain_v1): remove langchain_text_splitters from test group (#33425)
chore(langchain_v1): stricter handling of sync vs. async for wrap_model_call and wrap_tool_call (#33429)
chore(langchain_v1): further namespace clean up (#33428)
feat(langchain_v1): add async implementation for wrap_tool_call (#33420)
chore(langchain_v1): tool error exceptions (#33424)
feat(langchain_v1): expand message exports (#33419)
style: fix tables, capitalization (#33417)
chore(langchain_v1): add RemoveMessage (#33416)
release(langchain_v1): v1.0.0a13 (#33415)
fix(langchain_v1): out of date docstring (#33414)
chore(langchain_v1): update on_tool_call to wrap_tool (#33410)
chore(langchain_v1): update wrap_on_model return (#33408)
feat(langchain_v1): tool emulator (#33357)
feat(langchain_v1): refactoring HITL API (#33397)
style: .. code-block:: admonition translations (#33400)
style: address Sphinx double-backtick snippet syntax (#33389)
chore: update Sphinx links to markdown (#33386)
style: remove more Optional syntax (#33371)
chore(langchain_v1): rename on_model_call to wrap_model_call (#33370)
chore(langchain_v1): update the uv lock file (#33369)
chore(langchain_v1): replace modify model request with on model call (#33368)
chore(langchain): add unit tests for wrap_tool_call decorator (#33367)
chore(langchain_v1): rename on_tool_call to wrap_tool_call (#33366)
chore(langchain_v1): add runtime and context to model request (#33365)
chore(langchain_v1): update on_tool_call to regular callbacks (#33364)
style: monorepo pass for refs (#33359)
chore(langchain_v1): simplify on model call logic (#33358)
chore: fix dropdown default open admonition in refs (#33354)
chore(langchain_v1): remove unused internal namespace (#33352)
feat(langchain_v1): add on_tool_call middleware hook (#33329)
feat(langchain_v1): on_model_call middleware (#33328)
remove runtime where not needed
fix(langchain_v1): injection logic in tool node (#33344)
chore: enrich pyproject.toml files with links to new references, others (#33343)
chore: clean up pyproject.toml files, use core a7 (#33334)
chore(langchain): clean Makefile (#33335)
fix(langchain_v1): fix edges when there's no middleware (#33321)
release(langchain_v1): 1.0.0a12 (#33314)
chore(langchain_v1): rename model_request node -> model (#33310)
release(langchain_v1): 1.0.0a11 (#33307)
chore(langchain_v1): remove support for ToolNode in create_agent (#33306)
feat(langchain_v1): simplify to use ONE agent (#33302)
chore(langchain_v1): remove text splitters from langchain v1 namespace (#33297)
chore(langchain_v1): expose rate_limiters from langchain_core (#33305)
fix(langchain_v1): tool selector should use last human message (#33294)
feat(langchain_v1): before_agent and after_agent hooks (#33279)
feat(langchain_v1): Implement Context Editing Middleware (#33267)
feat(openai): enable stream_usage when using default base URL and client (#33205)
chore(infra): pdm -> hatchling (#33289)
feat(langchain_v1): Add retry_model_request middleware hook, add ModelFallbackMiddleware (#33275)
fix(langchain_v1): linting fixes for llm tool selector (#33278)
feat(langchain_v1): add llm selection middleware (#33272)
feat(langchain_v1): represent server side tools in modifyModelRequest and update tool handling (#33274)
feat(langchain_v1): Implement PIIMiddleware (#33271)
fix(langchain_v1): dynamic response format (#33273)
chore(langchain_v1): remove union return type in init_embeddings (#33062)
feat(langchain_v1): Add ToolCallLimitMiddleware (#33269)
chore(langchain_v1): change modifyModelRequest back to tools (#33270)
fix(langchain_v1): handle switching resposne format strategy based on model identity (#33259)
feat(langchain_v1): implement nicer devx for dynamic prompt (#33264)
feat(langchain_v1): description generator for HITL middleware (#33195)
chore(core,langchain,langchain_v1)!: remove globals from langchain-v1, update globals in langchain-classic, langchain-core (#33251)
chore(langchain_v1)!: Remove ToolNode from agents (#33250)
feat(langchain): model call limits (#33178)
chore: delete deprecated items (#33192)
chore(langchain_v1): uncomment some optional deps (#33244)
docs: v1 docs updates (#33173)
release: v1.0.0 (#32567)
feat(langchain_v1): update messages namespace (#33207)
feat(langchain): use decorators for jumps instead (#33179)
feat(langchain_v1): add async support for create_agent (#33175)
chore(langchain_v1): use list[str] for modifyModelRequest (#33166)
feat(langchain): Using Structured Response as Key in Output Schema for Middleware Agent (#33159)
chore(langchain_v1): expose middleware decorators and selected messages (#33163)
feat(langchain): todo middleware (#33152)
fix(langchain): handle gpt-5 model name in init_chat_model (#33148)
fix(langchain): add context_management to Anthropic chat model init (#33150)
fix(langchain): fix response action for HITL (#33131)
chore(langchain_v1): move tool node to tools namespace (#33132)
docs: more standardization (#33124)
docs: standardize .. code-block directive usage (#33122)
docs: correct ported over directives (#33121)
chore: bump ruff version to 0.13 (#33043)
chore: bump locks (#33114)
release(langchain): v1.0.0a9 (#33098)
fix(langchain): extra arg for anthropic caching, __end__ -> end for jump_to (#33097)
fix(langchain_v1): version equality check (#33095)
release(langchain): 1.0.0a8 (#33090)
feat(langchain): improvements to anthropic prompt caching (#33058)
style: repo linting pass (#33089)
fix(langchain): need to inject all state for tools registered by middleware (#33087)
chore(langchain): renaming for HITL (#33067)
chore(langchain): simplifying HITL condition (#33065)
fix(langchain_v1): only interrupt if at least one ToolConfig value is True (#33064)
feat(langchain): new decorator pattern for dynamically generated middleware (#33053)
fix(langchain): HITL bug causing dupe interrupt (#33052)
chore: update pyproject.toml files, remove codespell (#33028)
release(langchain): 1.0.0a6 (#33024)
fix(langchain): use state schema as input schema to middleware nodes (#33023)
feat(langchain): dynamic system prompt middleware (#33006)
feat(langchain): improved HITL patterns (#32996)
chore: restore commented out optional deps (#32971)
chore: bump mypy version to 1.18 (#32914)
release(langchain): v1.0.0a5 (#32917)
fix(langchain): use messages from model request (#32908)
fix(core): resolve mermaid node id collisions when special chars are used (#32857)
revert: "chore: remove ruff target-version" (#32895)
chore: remove ruff target-version (#32880)
chore(docs): update package READMEs (#32869)
feat(langchain): support PEP604 ( | union) in tool node error handlers (#32861)
chore(langchain): add ruff rule E501 in langchain_v1 (#32812)
chore(langchain): add ruff rule UP007 in langchain_v1 (#32811)
chore(langchain): enable ruff docstring-code-format in langchain_v1 (#32855)
chore(core): enable ruff docstring-code-format (#32834)
feat(langchain): middleware support in create_agent (#32828)
fix(langchain): fix mypy versions in langchain_v1 (#32816)
chore(langchain): cleanup langchain_v1 mypy config (#32809)
chore(langchain): add ruff rules D for langchain_v1 (#32808)
fix(langchain): update init version (#32793)
release(langchain): v1.0.0a3 (#32791)
chore(langchain): rename create_react_agent -> create_agent (#32789)
chore(langchain): remove upper bound at v1 for core (#32737)
chore(langchain): also bump text splitters (#32722)
chore(langchain): use latest core (#32720)
chore(langchain): revert back to static versioning for now (#32719)
release(langchain): v1.0.0a1 (#32718)
feat(langchain): revamped create_react_agent (#32705)
chore(langchain): remove untested chains for first alpha (#32710)
chore(langchain): drop Python 3.9 to prep for v1 (#32704)
chore: adress pytest-asyncio deprecation warnings + other nits (#32696)
chore: update references to use the latest version of Claude-3.5 Sonnet (#32594)
docs: update outdated README.md content (#32540)
fix(tests): add anthropic_proxy to configurable test parameters (for v1)
chore: formatting across codebase (#32466)
feat(openai): minimal and verbosity (#32455)
feat(langchain): add stuff and map reduce chains (#32333)
fix: use new Google model names in examples (#32288)
fix: update bar_model to use the correct model version claude-3-7-sonnet-20250219 (#32284)
refactor: remove references to unsupported model claude-3-sonnet-20240229 (#32281)
fix: formatting issues in docstrings (#32265)
feat(docs): improve devx, fix Makefile targets (#32237)
chore(langchain_v1): clean anything uncertain (#32228)
feat(langchain): v1 scaffolding (#32166)