版本更新：langchain-ai/langchain 1.4.0a2，评估 LLM Agent 表现

Initial release release(core): 1.4.0a2 ( #37134 ) refactor(core): unwind _AsyncEventsResult hybrid for astream_events ( #37133 ) release(core): 1.4.0a1 ( #37132 ) Merge remote-tracking branch 'origin/master' into v1.4 feat(core): stream_events(version='v3') protocol ( #37111 ) fix(core): preserve structured inputs on tool runs in tracers ( #37108 ) release(perplexity): 1.2.0 ( #37091 ) chore(docs): update x handle references ( #37081 ) fix(core): make removal optional in warn_deprecated ( #37056 ) fix(core): validate batch_size in _batch and _abatch to prevent infinite loop ( #36663 ) chore(core): mark stream_v2/astream_v2 as beta ( #36992 ) release(core): 1.3.2 ( #36990 ) feat(core): add content-block-centric streaming (v2) ( #36834 ) release(core): 1.3.1 ( #36972 ) feat(core): allow _format_output to pass through list of ToolOutputMixin instances ( #36963 ) chore: bump nbconvert from 7.17.0 to 7.17.1 in /libs/core ( #36923 ) feat(core): Update inheritance behavior for tracer metadata for special keys ( #36900 ) chore: bump langsmith from 0.7.13 to 0.7.31 in /libs/core ( #36813 ) release(core): release 1.3.0 ( #36851 ) release(core): 1.3.0a3 ( #36829 ) chore(core): keep checkpoint_ns behavior in streaming metadata for backwards compat ( #36828 ) feat(core): Add chat model and LLM invocation params to traceable metadata ( #36771 ) fix(core): restore cloud metadata IPs and link-local range in SSRF policy ( #36816 ) chore(deps): bump pytest to 9.0.3 ( #36801 ) chore(core): harden private SSRF utilities ( #36768 ) fix(openai): handle content blocks without type key in responses api conversion ( #36725 ) chore: bump pytest from 9.0.2 to 9.0.3 in /libs/core ( #36719 ) release(core): 1.3.0.a2 ( #36698 ) fix(core): Use reference counting for storing inherited run trees to support garbage collection ( #36660 ) docs(core): nit ( #36685 ) release(core): 1.3.0a1 ( #36656 ) chore(core): reduce streaming metadata / perf ( #36588 ) release(core): release 1.2.28 ( #36614 ) fix(core): add more sanitization to templates ( #36612 ) release(core): 1.2.27 ( #36586 ) fix(core): handle symlinks in deprecated prompt save path ( #36585 ) chore: add comment explaining pygments>=2.20.0 ( #36570 ) release(core): 1.2.26 ( #36511 ) fix(core): add init validator and serialization mappings for Bedrock models ( #34510 ) feat(core): add ChatBaseten to serializable mapping ( #36510 ) chore(core): drop gpt-3.5-turbo from docstrings ( #36497 ) fix(core): correct parameter names in filter_messages docstring example ( #36462 ) release(core): 1.2.25 ( #36473 ) fix(core): harden check for txt files in deprecated prompt loading functions ( #36471 ) fix(core): fixed typos in the documentation ( #36459 ) release(core): 1.2.24 ( #36434 ) feat(core): impute placeholder filenames for OpenAI file inputs ( #36433 ) chore: pygments>=2.20.0 across all packages ( CVE-2026-4539 ) ( #36385 ) fix(core): add "computer" to _WellKnownOpenAITools ( #36261 ) release(core): 1.2.23 ( #36323 ) revert: Revert "fix(core): trace invocation params in metadata" ( #36322 ) chore: bump requests from 2.32.5 to 2.33.0 in /libs/core ( #36243 ) release(core): 1.2.22 ( #36201 ) fix(core): validate paths in prompt.save and load_prompt , deprecate methods ( #36200 ) release(core): 1.2.21 ( #36179 ) fix(core,model-profiles): add missing ModelProfile fields, warn on schema drift ( #36129 ) chore(core): remove stale blockbuster allowlist for deleted context module ( #36168 ) ci: suppress pytest streaming output in CI ( #36092 ) release(core): 1.2.20 ( #36085 ) fix(core): trace invocation params in metadata ( #36080 ) feat: Add LangSmith integration metadata to create_agent and init_chat_model ( #35810 ) feat(core): harden anti-ssrf ( #35960 ) ci: avoid unnecessary dep installs in lint targets ( #36046 ) docs(core): document base_url in mermaid api ( #35961 ) chore: bump orjson from 3.11.5 to 3.11.6 in /libs/core ( #35805 ) chore: housekeeping ( #35850 ) release(core): 1.2.19 ( #35832 ) chore(core): move BaseCrossEncoder to langchain-core ( #35809 ) chore: bump tornado from 6.5.2 to 6.5.5 in /libs/core ( #35775 ) release(core): 1.2.18 ( #35704 ) fix(core): fix double backticks in deprecation docstring for alternative_import ( #35658 ) fix(core): preserve default_factory when generating tool call schema ( #35550 ) feat(openai): support tool search ( #35582 ) chore: bump the minor-and-patch group across 3 directories with 7 updates ( #35605 ) release(core): 1.2.17 ( #35527 ) fix(core): extract usage metadata from serialized tracer message outputs ( #35526 ) chore: bump the langchain-deps group across 3 directories with 7 updates ( #35513 ) chore: bump the langchain-deps group across 3 directories with 14 updates ( #35441 ) release(core): 1.2.16 ( #35439 ) fix(core): treat empty tool chunk ids as missing in merge ( #35414 ) fix(core): improve error message for non-JSON-serializable tool schemas ( #34376 ) fix(core): improve typing/docs for on_chat_model_start to clarify required positional args ( #35324 ) perf(core): defer specific langsmith imports to reduce import time ( #35298 ) revert: add ChatAnthropicBedrockWrapper ( #35371 ) release(core): 1.2.15 ( #35367 ) fix(anthropic): replace retired model IDs in tests and docstrings ( #35365 ) feat(anthropic): add ChatAnthropicBedrock wrapper ( #35091 ) style: fix some ruff noqa ( #35321 ) release(core): 1.2.14 ( #35328 ) chore(core): remove langserve from sys info util, add deepagents ( #35325 ) fix(core): fix merge_lists incorrectly merging parallel tool calls ( #35281 ) fix(core): accept int temperature in _get_ls_params for LangSmith tracing ( #35302 ) revert: accept integer temperature values in _get_ls_params ( #35319 ) fix(core): accept integer temperature values in _get_ls_params ( #35317 ) docs(core): update load note to be precise ( #35309 ) fix(core): prevent recursion error when args_schema is dict ( #35260 ) fix(core): preserve index and timestamp fields when merging ( #34731 ) docs(core): add security warnings and best practices for deserialization ( #35282 ) docs: fix docstring inaccuracies and update outdated LangSmith URLs ( #35283 ) fix(core): correct misleading jinja2 sandboxing comment ( #35183 ) chore: bump the langchain-deps group across 3 directories with 8 updates ( #35257 ) release(core): 1.2.13 ( #35230 ) docs(core): expanded get_lc_namespace docstring ( #35229 ) feat(openrouter): add langchain-openrouter provider package ( #35211 ) style: bump ruff version to 0.15 ( #35042 ) release(core): 1.2.12 ( #35192 ) fix(core): fix setting ChatGeneration.text ( #35191 ) release(core): 1.2.11 ( #35144 ) fix(openai): sanitize urls when counting tokens in images ( #35143 ) chore(core): clean up docstring mismatch and redundant logic in langchain-core ( #35064 ) fix(core): replace bare except with Exception in tracer ( #35138 ) release(core): 1.2.10 ( #35136 ) chore(deps): bump the langchain-deps group across 3 directories with 40 updates ( #35129 ) chore(deps): bump the langchain-deps group across 3 directories with 11 updates ( #35121 ) feat(core): add ContextOverflowError, raise in anthropic and openai ( #35099 ) feat(model-profiles): add text_inputs and text_outputs ( #35084 ) feat(core): count tokens from tool schemas in count_tokens_approximately ( #35098 ) docs(core): add missing name docstring for RunnableSerializable ( #35088 ) release(core): 1.2.9 ( #35025 ) fix(core): adjust cap when scaling approximate token counts ( #35017 ) revert: precompile hex color regex pattern at module level ( #35016 ) chore: add make type target ( #35015 ) revert: "chore: add typing target in Makefile " ( #35013 ) chore: add typing target in Makefile ( #35012 ) fix(core): apply cap when scaling approximate token counts ( #35005 ) feat(core): allow scaling by reported usage when counting tokens approximately ( #34996 ) test(core): increase delta_time for flaky test ( #34982 ) chore: enrich pyproject.toml files ( #34980 ) release(core): 1.2.8 ( #34975 ) docs(core): add examples for pretty_repr , pretty_print ( #34968 ) docs(core): use proper admonition for get_buffer_string ( #34967 ) docs: add usage examples to core classes ( #34841 ) chore(core): fix docstring format ( #34966 ) chore(deps): bump the uv group across 20 directories with 3 updates ( #34941 ) docs: add example to create_message function docstring ( #34851 ) docs(core): clarify tool decorator argument and return type requirements ( #34860 ) fix(core): fix nested mustache variable extraction and update docs ( #34872 ) fix(core): allow base model annotations for empty model ( #34932 ) chore: upgrade urllib3 to 2.6.3 ( #34940 ) fix(core): prevent crash in ParrotFakeChatModel when messages list is empty ( #34943 ) fix(core): google docstring parsing with no arguments/reserved arguments ( #34861 ) test(core): add tests for approximate token counting with multimodal messages ( #34898 ) fix(core): replace Iterable with Iterator for block iteration ( #34934 ) fix(core): yield_blobs returns Iterator ( #34935 ) docs: Fix typo in Runnable description of async variants ( #34905 ) fix(core): raise outputparserexception for unknown tools ( #34923 ) docs(core): nit ( #34914 ) chore(core): nits ( #34897 ) feat(core): add multimodal support to count_tokens_approximately ( #34883 ) fix(core): fix typo 'use a a' -> 'use as a' in check_version.py ( #34878 ) style(core): lint ( #34862 ) feat(core): add XML format option for get_buffer_string ( #34802 ) chore(core): relax packaging constraints ( #34832 ) chore(deps-dev): bump setuptools from 67.8.0 to 78.1.1 in /libs/core in the uv group across 1 directory ( #34825 ) chore(core, langchain): add version consistency check pre-commit hooks ( #34782 ) docs(core): enhance docstring for RunnableConfig for clarity on total=False ( #34756 ) docs(core): clean up callbacks param descriptions ( #34738 ) fix(core): correctly guard against non-text-block types ( #34729 ) chore: update twitter URLs ( #34736 ) refactor(core): generalize comma_list utility to support any Iterable ( #34714 ) fix(core): add explicit tags parameter to sync LLMManagerMixin methods ( #34722 ) docs(core): enhance docstrings for ToolCall and ToolCallChunk ( #34719 ) fix(core): add tool_call_id to on_tool_error event data ( #33731 ) fix(core): improve error message for missing title in JSON schema functions ( #34683 ) fix(core): make yield_keys prefix keyword-only to match BaseStore ( #34659 ) chore(core): bump lock ( #34695 ) chore(core): improve types for RunnableLambda ( #34539 ) chore(core): improve types for StreamingRunnable ( #34540 ) style(core): fix some noqa escapes ( #34675 ) style: bump ruff version to 0.14.11 ( #34674 ) fix: remove relative imports ( #34680 ) release: langchain-core 1.2.7 ( #34678 ) fix: don't trace injected args only found in signature ( #34670 ) feat(core): add more file extensions to ignore in HTML link extraction ( #34552 ) refactor(core): improve docstrings for HTML link extraction utilities ( #34550 ) test(core): add edge case for empty examples in LengthBasedExampleSelector ( #34641 ) fix(core): fix strict schema generation for functions with optional args ( #34599 ) feat(core): support custom message separator in get_buffer_string() ( #34569 ) refactor(core): add warning for fallback GPT-2 tokenizer usage ( #34621 ) fix(core,langchain): use get_buffer_string for message summarization ( #34607 ) test(core): add tests for formatting utils and merge functions ( #34511 ) fix(core): strip message IDs from cache keys using model_copy ( #33915 ) fix(core): exclude injected args from tool schema ( #34582 ) refactor(core): select chunk_id via ranking and remove extra allocation ( #34588 ) release(core): 1.2.6 ( #34586 ) chore(core): Update LangChainTracer to use Pydantic v2 methods ( #34541 ) docs(core): add docstrings to internal helper functions ( #34525 ) docs(core): refresh content.py docstrings ( #34546 ) chore(deps): bump mypy to v1.19 and ruff to v1.14 ( #34521 ) refactor(core): fix some missing generic types ( #31658 ) style(core): add ruff RUF012 rule ( #34492 ) fix(core): support (message class, template) tuples in ChatPromptTemplate.from_messages ( #33989 ) test(core): add regression test for list-index $ref resolution ( #34097 ) fix(core): fix callback manager merge mixing handlers ( #32028 ) ( #33617 ) style: add ruff ISC001 rule ( #34493 ) style(core): fix mypy no-any-return violations ( #34204 ) docs(core): image url docstring enhancement ( #34488 ) test(core): URL-encode bgColor parameter in mermaid.ink API calls ( #34466 ) style(core): fix some noqa: ARG rules ( #34437 ) fix(core): URL-encode bgColor in mermaid API calls ( #34461 ) perf(core): move origin type map to module level in function_calling.py ( #34481 ) style(core): add ruff rules TC ( #34476 ) perf(core): precompile hex color regex pattern at module level ( #34480 ) docs(core): update to indicate betas ( #34457 ) release(core): 1.2.5 ( #34456 ) fix(core): serialization patch ( #34455 ) fix(core): RunnablePick method return types ( #34208 ) fix(core): preserve Field(description=...) in @tool decorator ( #34354 ) fix(core): populate default args from tool's args_schema ( #34399 ) fix(core): use tool_calls instead of deprecated function_call in get_buffer_string ( #34355 ) feat(core): add PEP 702 __deprecated__ attribute support to @deprecated ( #34257 ) fix(core): ensure tool_call_count is never null ( #34431 ) feat(core): automatically count and store meta for tool call count ( #33756 ) feat(core): add 'approximate' alias in place of count_tokens_approximately ( #33045 ) chore(core): fix some ruff preview rules ( #34425 ) release(core): 1.2.4 ( #34429 ) feat(core): add usage_metadata to metadata in LangChainTracer ( #34414 ) fix(core): defer persisting traces for iterator inputs ( #34416 ) chore(core): fix some docstrings ( #34426 ) release(core): 1.2.3 ( #34421 ) fix(core): allow unknown blocks in convert_to_openai_messages ( #34420 ) feat(infra): add CI check for out of date lockfiles ( #34397 ) chore(core): bump lockfile ( #34392 ) release(core): 1.2.2 ( #34391 ) fix(core): use get_type_hints for Python 3.14 TypedDict compatibility ( #34390 ) release(core): 1.2.1 ( #34370 ) fix(core): handle None arguments in parse_tool_call ( #34242 ) chore(core): fix some types related to ToolCallChunk ( #34283 ) release(core): 1.2 ( #34319 ) style(core): docs nit ( #34312 ) fix(core): widen openai tool/function conversion input type to Mapping ( #34304 ) chore(core): add admonitions around use of load ( #34285 ) feat(core,anthropic): extras on BaseTool ( #34120 ) release: langchain-core 1.1.3 ( #34266 ) fix(core): undo jinja2 restrictions ( #34072 ) fix: remove partial usage for retriever func + afunc ( #34265 ) release(core): 1.1.2 ( #34253 ) fix(core): pass tool_call_id to on_tool_start callback ( #34235 ) chore(core): improve typing of messages utils functions ( #34225 ) fix(core): prevent async task garbage collection (RUF006) ( #34238 ) chore(core): use anext and deprecate py_anext ( #34211 ) feat(core): support google maps grounding in genai block translator ( #34244 ) docs(core,groq,openai): nits for ref docs ( #34243 ) docs(core): improve style for refs ( #34227 ) docs(core): update StrOutputParser docstring ( #34213 ) release: langchain-core 1.1.1 ( #34212 ) feat: Use uuid7 for run ids ( #34172 ) fix: tool call id bug introduced w/ runtime injection ( #34185 ) chore: update test to be compatible with mem-optimized runtree ( #34176 ) docs(core): update docstrings in RunnableConfig , dereference_refs ( #34131 ) docs(anthropic,core,langchain): updates ( #34106 ) style(core,langchain,qdrant): fix some docstrings for refs ( #34105 ) fix(core): handle missing StructuredPrompt schema ( #34096 ) fix(core): ensure_ascii=False in PydanticOutputParser exception formatting ( #34006 ) fix(infra,core): nits ( #34079 ) style(core,langchain-classic,openai): fix griffe warnings ( #34074 ) chore(docs): fix a few refs syntax errors ( #34044 ) release(core): 1.1.0 ( #34063 ) feat(model-profiles): distribute data across packages ( #34024 ) release(core): 1.0.7 ( #34036 ) fix(core): fix validation for input variables in f-string templates, restrict functionality supported by jinja2, mustache templates ( #34035 ) release: langchain-core 1.0.6 ( #34018 ) chore: Support tool runtime injection when custom args schema is prov… ( #33999 ) feat(core): add proxy support for mermaid png rendering ( #32400 ) release(core): 1.0.5 ( #33973 ) fix(core): don't mask exceptions ( #33959 ) docs(core): add clarity to base token counting methods ( #33958 ) chore(core,infra): nits ( #33954 ) chore(core): fix some ruff TC rules ( #33929 ) chore: update README.md files ( #33919 ) test(core): add comprehensive tests for groq block translator ( #33906 ) revert(core): "applied secrets_map in load to plain string values" ( #33913 ) fix(core): applied secrets_map in load to plain string values ( #33678 ) release(core): 1.0.4 ( #33886 ) feat(core): support draw subgraph using pygraphviz ( #32966 ) fix(core): Fix tool name check in name_dict for PydanticToolsParser ( #33479 ) fix(core): Filter empty content blocks from formatted prompts ( #32519 ) fix(core): context preservation in shielded async callbacks ( #32163 ) fix(core): RunnablePick may not return a dict if keys is a string ( #31321 ) fix(core): fix Runnable parallel schema being empty when children runnable input schemas use TypedDict ( #28196 ) docs: fix typos in libs/core/langchain_core/utils/function_calling.py ( #33873 ) docs: fix typos in libs/core/tests/unit_tests/utils/test_strings.py ( #33875 ) docs: fix typos in libs/core/tests/unit_tests/indexing/test_hashed_document.py ( #33874 ) docs: fix typos in libs/core/tests/unit_tests/test_tools.py ( #33876 ) docs: fix typos in some files ( #33867 ) style: some cleanup ( #33857 ) chore: attribute package change versions ( #33854 ) fix(core): handle missing dependency version information ( #33844 ) chore: correct langchain-community references ( #33827 ) chore(core): add ruff rule PLR2004 ( #33706 ) chore(core): clean pyproject formatting ( #33821 ) docs(model-profiles): fix typo ( #33820 ) style: refs pass ( #33813 ) fix(core): add no colors check ( #33780 ) release(core): 1.0.3 ( #33768 ) style: misc refs work ( #33771 ) docs(core): improve tools module docstrings ( #33755 ) feat(core): mint langchain-model-profiles and add profile property to BaseChatModel ( #33728 ) chore: use model IDs, latest anthropic models ( #33747 ) release: core 1.0.2 and langchain 1.0.3 ( #33736 ) fix: filter out injected args from tracing ( #33729 ) style: more refs fixes ( #33730 ) fix(core): improve JSON get_format_instructions using Opik Agent Optimizer ( #33718 ) style(core): more cleanup all around ( #33711 ) style: more refs work ( #33707 ) fix(core): translate Google GenAI text blocks to v1 ( #33699 ) feat(langchain): export UsageMetadata ( #33692 ) fix: links ( #33691 ) fix(core): fix PydanticOutputParser's get_format_instructions for v1 models ( #32479 ) refactor(core): Minor refactor for code readability ( #33674 ) fix(infra): add emacs backup files to gitignore ( #33675 ) fix: update some links ( #33686 ) style(core): more refs work ( #33664 ) fix(core): make handling of schemas more defensive ( #33660 ) release(core): 1.0.1 ( #33639 ) feat(core): automatic set required to include all properties in strict mode ( #32930 ) docs(core): Updated docs for mustache_template_vars ( #33481 ) style: even more refs work ( #33619 ) style: more refs work ( #33616 ) style: more refs polishing ( #33601 ) ci(infra): test CodSpeed with Python 3.13 ( #33599 ) style(anthropic): use aliases for model names ( #33590 ) chore: update pyproject.toml url entries ( #33587 ) release(core): 1.0.0 ( #33562 ) fix(core): support for Python 3.14 ( #33461 ) docs: more fixes for refs ( #33554 ) release: joint rcs for core + langchain ( #33549 ) chore(langchain): allow injection of ToolRuntime and generic ToolRuntime[ContextT, StateT] ( #33546 ) chore: more sweeping ( #33533 ) release(core): 1.0.0rc2 ( #33530 ) docs(anthropic): update extended thinking docs and fix urls ( #33525 ) feat(core): support vertexai standard content ( #33521 ) style: more sweeping refs work ( #33513 ) style: more work for refs ( #33508 ) feat(core): include original block type in server tool results for google-genai ( #33502 ) release(core): 1.0.0rc1 ( #33497 ) chore(core): delete BaseMemory, move to langchain-classic ( #33373 ) docs: update package READMEs ( #33488 ) fix(core): propagate extras when aggregating tool calls in v1 content ( #33494 ) chore(core): delete items marked for removal in schemas.py ( #33375 ) fix(docs): Fix several typos and grammar ( #33487 ) chore(core): delete function_calling.py utils marked for removal ( #33376 ) chore(core): delete pydantic_v1/ ( #33374 ) feat(groq): support built-in tools in message content ( #33459 ) chore(core): delete get_relevant_documents ( #33378 ) style: llm -> model ( #33423 ) chore(langchain): remove arg types from docstrings ( #33413 ) style: fix tables, capitalization ( #33417 ) fix(core): handle parent/child mustache vars ( #33345 ) style: remove Defaults to None ( #33404 ) style: .. code-block:: admonition translations ( #33400 ) style: address Sphinx double-backtick snippet syntax ( #33389 ) chore(core): remove arg types from docstrings ( #33388 ) chore: update Sphinx links to markdown ( #33386 ) fix(core): override streaming callback if streaming attribute is set ( #33351 ) refactor(core): clean up sys_info.py ( #33372 ) style: remove more Optional syntax ( #33371 ) chore: drop UP045 ( #33362 ) refactor(core): remove keep-runtime-typing from pyproject.toml following dropping 3.9 ( #33360 ) style: monorepo pass for refs ( #33359 ) fix(core): don't print package if no version found ( #33347 ) chore: enrich pyproject.toml files with links to new references, others ( #33343 ) release(core): 1.0.0a8 ( #33341 ) fix(core): add back add_user_message and add_ai_message ( #33340 ) release(core): 1.0.0a7 ( #33309 ) fix(core,openai,anthropic): delegate to core implementation on invoke when streaming=True ( #33308 ) fix(core): fix string content when streaming output_version="v1" ( #33261 ) chore(infra): pdm -> hatchling ( #33289 ) style(core): drop python 39 linting target for 3.10 ( #33286 ) chore(core): docstring nits ( #33285 ) chore(core,langchain,langchain_v1)!: remove globals from langchain-v1, update globals in langchain-classic, langchain-core ( #33251 ) feat(core): add optional include_id param to convert_to_openai_messages function ( #33242 ) chore: delete deprecated items ( #33192 ) docs: v1 docs updates ( #33173 ) release: v1.0.0 ( #32567 ) release(core): 0.3.77 ( #33185 ) feat: (core, standard-tests) support PDF inputs in ToolMessages ( #33183 ) chore(core): remove runnable section from README.md ( #33171 ) docs(core): remove non-existent param from as_tool docstring ( #33165 ) fix(core): Support of 'reasoning' type in 'convert_to_openai_messages' ( #33050 ) docs: more standardization ( #33124 ) docs: standardize .. code-block directive usage ( #33122 ) chore: bump ruff version to 0.13 ( #33043 ) test(core): resolve pytest marker warning ( #33111 ) test(core): resolve pydantic_v1 deprecation warning ( #33110 ) refactor(core): use aadd_documents in vectorstores unit tests ( #33109 ) fix(core): use version agnostic get_fields ( #33108 ) test(core): use secure hash algorithm in indexing test to eliminate SHA-1 warning ( #33107 ) test(core): suppress pydantic_v1 deprecation warnings during import tests ( #33106 ) test(core): don't use deprecated input_variables param in from_file ( #33105 ) refactor(core): don't use deprecated input_variables param in from_file ( #33104 ) test(core): enhance stringify_value test coverage for nested structures ( #33099 ) test(core): suppress deprecation warnings in PipelinePromptTemplate ( #33102 ) fix(core): use secure hash algorithm in indexing test to eliminate SHA-1 warning ( #33101 ) style(core): typo/docs lint pass ( #33093 ) chore: update pyproject.toml files, remove codespell ( #33028 ) docs(core): fix bugs and improve example code in chat_history.py ( #32994 ) docs(core): add type hints to BaseStore example code ( #32946 ) chore(langchain): Fix typos in core docstrings ( #32928 ) docs(core): remove duplicate 'the' in indexing/api.py ( #32924 ) chore(core): test that default values in tool calls are preserved in json schema representation ( #32921 ) chore: bump mypy version to 1.18 ( #32914 ) fix(core): resolve mermaid node id collisions when special chars are used ( #32857 ) fix(core): preserve ordering in RunnableRetry batch/abatch results ( #32526 ) feat(core): allow overriding ls_model_name from kwargs ( #32541 ) fix(core): fix support of Pydantic v1 models in BaseTool.args ( #32487 ) fix(core): resolve infinite recursion in _dereference_refs_helper with mixed $ref objects ( #32578 ) fix(core): force overwrite additionalProperties to False in strict mode ( #32879 ) fix(core): AsyncCallbackHandler docstring cleanup ( #32897 ) fix(core): raise OutputParserException for non-dict JSON outputs ( #32236 ) revert: "chore: remove ruff target-version" ( #32895 ) feat(core): allow custom Mermaid URL ( #32831 ) fix(core): preserve ToolMessage.status field in convert_to_messages ( #32840 ) test: Add failing test for BaseCallbackManager.merge ( #32040 ) test(core): reactivate commented tests in test_indexing ( #32882 ) chore: remove ruff target-version ( #32880 ) release(core): 0.3.76 ( #32877 ) fix(core): honor enabled=false in nested tracing ( #31986 ) fix(core): ensure InjectedToolCallId always overrides LLM-generated values ( #32766 ) chore(docs): update package README s ( #32869 ) chore(core): cleanup pyproject.toml ( #32865 ) refactor(core): improve beta decorator ( #32505 ) feat(core): add id field to Document passed to filter for InMemoryVectorStore similarity search ( #32688 ) feat(core): support AWS Bedrock document content blocks in msg_content_output ( #32799 ) feat(core): support for adding PromptTemplate s with formats other than f-string ( #32253 ) chore(core): add ruff rule PLC0415 ( #32351 ) chore(core): fix some pydocs to use google-style ( #32764 ) chore(core): fix some ruff preview rules ( #32785 ) chore(core): fix some docstrings (from DOC preview rule) ( #32833 ) refactor(core): use pytest style in TestGetBufferString ( #32786 ) chore(core): enable ruff docstring-code-format ( #32834 ) chore(core): fix some mypy warn_unreachable issues ( #32560 ) feat(core): add web_search in OpenAI tools list ( #32738 ) chore: adress pytest-asyncio deprecation warnings + other nits ( #32696 ) release(core): 0.3.75 ( #32693 ) feat(core): trace response body on error ( #32653 ) chore(core): add note about backward compatibility for tool_calls in additional_kwargs in JsonOutputKeyToolsParser docs(docs): fixed typos in documentations ( #32661 ) chore(core): add mypy pydantic plugin ( #32604 ) refactor(core): Use duck typing for _StreamingCallbackHandler ( #32535 ) fix(core): Support no-args tools by defaulting args to empty dict ( #32530 ) docs: update outdated README.md content ( #32540 ) chore(core): bump lock feat: port various nit changes from wip-v0.4 ( #32506 ) fix(core): fix beta decorator for properties ( #32497 ) chore: formatting across codebase ( #32466 ) release(core): 0.3.74 ( #32454 ) feat(openai): custom tools ( #32449 ) release(core): 0.3.73 ( #32446 ) feat(core): zero-out token costs for cache hits ( #32437 ) fix(core): fix index checking when merging lists ( #32431 ) fix(core): revert "fix: tool call streaming bug with inconsistent indices from Qwen3" ( #32307 ) fix: lint fix: tool call streaming bug with inconsistent indices from Qwen3 ( #32160 ) fix(core): resolve cache validation error by safely converting Generation to ChatGeneration objects ( #32156 ) chore(core): add test for nested pydantic fields in schemas ( #32285 ) refactor: remove references to unsupported model claude-3-sonnet-20240229 ( #32281 ) fix(core): track within-batch deduplication in indexing num_skipped count ( #32273 ) fix: formatting issues in docstrings ( #32265 ) feat(docs): improve devx, fix Makefile targets ( #32237 ) fix: LLM mimicking Unicode responses due to forced Unicode conversion of non-ASCII characters. ( #32222 ) fix(docs): capitalization, codeblock formatting, and hyperlinks, note blocks ( #32235 ) release(core): 0.3.72 ( #32214 ) fix(core): Dereference Refs for pydantic schema fails in tool schema generation ( #32203 ) docs: formatting cleanup ( #32188 ) release(core): 0.3.71 ( #32186 ) fix(core): exclude api_key from tracing metadata ( #32184 ) fix(core): add type key when tracing in some cases ( #31825 ) feat(core): add sanitize_for_postgres utility to fix PostgreSQL NUL byte DataError ( #32157 ) fix(core): fix parse_result in case of self.first_tool_only with multiple keys matching for JsonOutputKeyToolsParser ( #32106 ) release(core): 0.3.70 ( #32144 ) docs(core): move incorrect arg limitation in rate limiter's docstring ( #32118 ) fix(core): fix docstrings and add sleep to FakeListChatModel._call ( #32108 ) fix(core): better error message for empty var names ( #32073 ) fix(core): implement sleep delay in FakeMessagesListChatModel _generate ( #32014 ) fix(core): JSON Schema reference resolution for list indices ( #32088 ) feat(core): update _import_utils.py to not mask the thrown exception ( #32071 ) fix: fixing missing Docstring Bug if no Docstring is provided in BaseModel class ( #31608 ) fix: issue a warning if np.nan or np.inf are in _cosine_similarity argument Matrices ( #31532 ) release(core): release 0.3.69 ( #32056 ) feat(core): add an option to make deserialization more permissive ( #32054 ) chore(core): unpin packaging dependency ( #32032 ) docs: add deprecation notice for PipelinePromptTemplate ( #31999 ) fix(core): correct return type hints in BaseChatPromptTemplate ( #32009 ) feat(core): add ruff rules D to tests except D1 ( #32000 ) fix[core]: added error message if the query vector or embedding contains NaN values ( #31822 ) ruff: restore stacklevels, disable autofixing ( #31919 ) core: docs: clarify where the kwargs in on_tool_start and on_tool_end go ( #31909 ) ruff: more rules across the board & fixes ( #31898 ) ollama: thinking, tool streaming, docs, tests ( #31772 ) fix: fix file open with encoding in chat_history.py ( #31884 ) core: Cleanup pyproject ( #31857 ) fix: remove unused type ignore from three_values fixture in TestAsyncInMemoryStore ( #31895 ) core: Ruff preview fixes ( #31877 ) core: make ruff rule PLW1510 unfixable ( #31868 ) core: Bump ruff version to 0.12 ( #31846 ) core[patch]: Int Combine when Merging Dicts ( #31572 ) core: release 0.3.68 ( #31848 ) core: Use parametric tests in test_openai_tools ( #31839 ) core[path]: Use context manager for FileCallbackHandler ( #31813 ) core: release 0.3.67 ( #31791 ) core: expose tool message recognized block types ( #31787 ) docs: enhance docstring for disable_streaming parameter in BaseChatModel ( #31759 ) fix: update import paths for ChatOllama to use langchain_ollama instead of community (#31721) core[patch]: Add additional hashing options to indexing API, warn on SHA-1 (#31649) standard-tests: refactoring and fixes (#31703) core: Use parametrized test in test_correct_get_tracer_project (#31513) docs: document Anthropic cache TTL count details (#31708) core[patch]: Improve RunnableWithMessageHistory init arg types (#31639) core: fix get_buffer_string output for structured message content (#31600) core[patch]: check before removing tags (#31691) core: release 0.3.66 (#31690) core[patch]: Returning always 2D Array for _cosine_similarity (#31528) core[patch]: Add doc-strings to tools/base.py (#31684) core: Cleanup Pydantic models and handle deprecation warnings (#30799) core and langchain: Remove upper bound restriction langsmith dependency (#31629) bump langsmith to allow 0.4 (#31594) core: In LangChainTracer, send only the first token event (#31591) core: release 0.3.65 (#31557) core(fix): revert set_text optimization (#31555) core: use run tree post/patch (#31500) core[patch]: Correct type casting of annotations in _infer_arg_descriptions (#31181) core[patch]: revert change to stream type hint (#31501) core: Add mypy strict-equality rule (#31286) fix: module 'defusedxml' has no attribute 'ElementTree' (#31429) (#31431) core: release 0.3.63 (#31419) langchain-core: Add image_generation tool to list of known openai tools (#31396) standard-tests: add benchmarks (#31302) core: release 0.3.62 (#31376) anthropic: support for code execution, MCP connector, files API features (#31340) core: release 0.3.61 (#31317) openai[patch]: support built-in code interpreter and remote MCP tools (#31304) core: Improve Runnable __or__ method typing annotations (#31273) core: support Union type args in strict mode of OpenAI function calling / structured output (#30971) core: Add ruff rules A (builtins shadowing) (#29312) langchain[patch]: Allow async indexing code to work for vectorstores that only defined sync delete (#30869) core: Add ruff rules RUF (#29353) core: release 0.3.60 (#31249) core: Add ruff rules SLF (#30666) perf[core]: remove unnecessary model validators (#31238) packaging[core]: bump min pydantic version (#31239) langchain-core[patch]: Incremental record manager deletion should be batched (#31206) perf[core]: remove generations summation from hot loop (#31231) perf[core]: remove costly async helpers for non-end event handlers (#31230) core: Fix some private member accesses (#30912) core: Fix issue 31035 alias fields in base tool langchain core (#31112) core: release 0.3.59 (#31150) fix(core): Permit OpenAI style blocks to be passed into convert_to_openai_messages (#31140) core: release 0.3.58 (#31099) core, openai[patch]: prefer provider-assigned IDs when aggregating message chunks (#31080) 0.3.57 (#31095) Enable run mutation (#31090) packaging: remove Python upper bound for langchain and co libs (#31025) core: release 0.3.56 (#31000) core: release 0.3.56rc1 (#30998) core[patch]: fix edge cases for _is_openai_data_block (#30997) feat(core): Autogenerate filenames for when converting file content blocks to OpenAI format (#30984) core, standard-tests: support PDF and audio input in Chat Completions format (#30979) core[patch]: update dict prompt template (#30967) core, openai: support standard multi-modal blocks in convert_to_openai_messages (#30968) core[patch]: release 0.3.55 (#30952) core: Make Graph.Node.data optional (#30943) core: Improve OutputParser error messaging when model output is truncated (max_tokens) (#30936) core[patch]: de-beta usage callback (#30928) core: release 0.3.54 (#30911) core[patch]: add retries and better messages to draw_mermaid_png (#30881) core[patch]: Raise AttributeError (instead of ModuleNotFoundError ) in custom __getattr__ (#30905) core: release 0.3.53 (#30901) multiple: permit optional fields on multimodal content blocks (#30887) core: Removing unnecessary pydantic core schema rebuilds (#30848) core[fix]: Fix __dir__ in __init__.py for output_parsers module (#30856) core: Remove some noqa (#30855) core[fix]: remove load from dynamic imports dict (#30849) core: release 0.3.52 (#30850) Fix from langchain_core.load.load import load import (#30843) core[patch]: dict chat prompt template support (#25674) multiple: multi-modal content blocks (#30746) Tinkering with CodSpeed (#30824) Consistent docstring indentation (#30834) core[lint]: fix issue with unused ignore in __init__.py files (#30825) core[performance]: use custom __getattr__ in __init__.py files for lazy imports (#30769) core: Improve mypy config (#30737) core: Add ruff rules FBT001 and FBT002 (#30695) core[patch]: Share executor for async callbacks run in sync context (#30779) core[lint]: Use 3.9 formatting for docs and tests (#30780) core[lint]: Fix typing in test_async_callbacks (#30788) core: Specify code when ignoring type issue (ruff PGH003) (#30675) core[patch]: support customization of backoff parameters in with_retries (#30773) Async callback benchmark (#30777) [performance]: Use hard coded langchain-core version to avoid importlib import (#30744) Adding more import time benchmarks for langchain-core (#30770) core: Add ruff rules PLR (#30696) core: Add ruff rules ARG (#30732) [performance]: Adding benchmarks for common langchain-core imports (#30747) Clean up numpy dependencies and speed up 3.13 CI with numpy>=2.1.0 (#30714) core: Add ruff rules PYI (#29335) core: Add ruff rules PGH (except PGH003) (#30656) core: Fix handler removal in BaseCallbackManager (Fixes #30640) (#30659) core: Add ruff rules DTZ (#30657) core: Rework pydantic version checks (#30653) core: Add ruff rules TD and FIX (#30654) release: bump core to v0.3.51 (#30668) core[patch]: log information from certain errors (#30626) partners: Add Perplexity Chat Integration (#30618) core: Add ruff rules RET (#29384) core: 0.3.50 release (#30623) core: Add ruff rules for Pylint PLC (Convention) and PLE (Errors) (#29286) core: Propagate config_factories in RunnableBinding (#30603) core: Add ruff rule FBT003 (boolean-trap) (#29424) core: Add ruff rules PERF (#29375) core: Add ruff rules PT (pytest) (#29381) core: Add ruff rules S110 and S112 (#30599) core: Add ruff rules D (docstring) (#29406) core: Accept ALL ruff rules with exclusions (#30595) core[patch]: pydantic 2.11 compat (#30554) core: Fix test_stream_error_callback (#30228) core: Add ruff rules G, FA, INP, AIR and ISC (#29334) Include delayed inputs in langchain tracer (#30546) core[patch]: fix loss of partially initialized variables during prompt composition (#30096) core[patch]: specify default event loop scope in pyproject.toml (#30543) fix types Merge branch 'master' of github.com:xzq-xu/langchain into xzq-xu/master x Merge branch 'master' into master x core: Bump ruff version to 0.11 (#30519) core[patch]: stop deleting records with "scoped_full" when doc is empty (#30520) core[patch]: Add ruff rules for PLW (Pylint Warnings) (#29288) format test lint passed modify test name add a unit test core[patch]: release 0.3.49 (#30500) format import add a new-line remove unused e _prep_run_args，tool_input copy, Exception _prep_run_args，tool_input copy Fix: Prevent run_manager from being added to state object core[patch]: store model names on usage callback handler (#30487) core[patch]: mark usage callback handler as beta (#30486) core[patch]: Remove old accidental commit (#30483) core[patch]: add token counting callback handler (#30481) core[patch]: Fix handling of title when tool schema is specified manually via JSONSchema (#30479) docs[patch]: update trim_messages doc (#30462) core[patch]: release 0.3.48 (#30458) core: add tool_call exclusion in filter_message (#30289) docs[patch]: add warning to token counter docstring (#30426) core(mermaid): allow greater customization (#29939) core[patch]: optimize trim_messages (#30327) core[patch]: more tests for trim_messages (#30421) core: release 0.3.47 (#30396) multiple: enforce standards on tool_choice (#30372) core[patch]: release 0.3.46 (#30383) Dereference run tree (#30377) Unset context to None in var (#30380) Unset context after step (#30378) core[patch]: add util for approximate token counting (#30373) Rm test for parent_run presence (#30356) core: release 0.3.45 (#30277) fix(core): Ignore missing secrets on deserialization (#30252) openai[patch]: support Responses API (#30231) core[patch]: release 0.3.44 (#30236) core[patch]: support single-node subgraphs and put subgraph nodes under the respective subgraphs (#30234) Flush (#30157) core[patch]: release 0.3.43 (#30173) core[patch]: catch structured_output_format (#30172) core[patch]: export ArgsSchema (#30169) core[patch]: release 0.3.42 (#30163) core[patch]: update structured output tracing (#30123) core, openai, standard-tests: improve OpenAI compatibility with Anthropic content blocks (#30128) core(mermaid): fix error when 3+ subgraph levels (#29970) core[patch]: release 0.3.41 (#30100) [Doc] Improve api doc (#30073) core: make with_alisteners() example workable. (#30059) core: Add ruff rules PTH (pathlib) (#29338) core[patch]: Fix FileCallbackHandler name resolution, Fixes #29941 (#29942) core: Add ruff rules TC (#29268) core[patch]: version 0.3.40 (#29997) core[patch]: allow passing description to tool decorator (#29976) docs[patch]: update disable_streaming docstring (#29968) core[patch]: release 0.3.39 (#29966) core[patch]: pydantic 2.11 compat (#29963) core[patch]: release 0.3.38 (#29962) core, openai[patch]: support serialization of pydantic models in messages (#29940) core: Add ruff rules ANN (type annotations) (#29271) core[patch]: dont deep copy merge_message_runs (#28454) core[patch]: return ToolMessage from tools when tool call ID is empty string (#29921) core: add sambanova chat models to load module mapping (#29855) core[patch]: set version="v2" as default in astream_events (#29894) core[patch]: release 0.3.37 (#29895) core[patch]: de-beta rate limiters (#29891) core: basemessage.text() (#29078) core: release 0.3.36 (#29869) core[patch]: allow passing JSON schema as args_schema to tools (#29812) all: Bump blockbuster version to 1.5.18 (#29806) multiple: fix uv path deps (#29790) core : update the class docs of InMemoryVectorStore in in_memory.py (#29781) core[patch]: release 0.3.35 (#29764) core: Fix output of convert_messages when called with BaseMessage.model_dump() (#29763) core: Make abatch_as_completed respect max_concurrency (#29426) Core: Fix add for concatting two BaseMessageChunk's (#29531) core: Handle unterminated escape character when parsing partial JSON (#29065) core: release 0.3.34 (#29644) infra: migrate to uv (#29566) core: allow passing message dicts into ChatPromptTemplate (#29363) Drop duplicate inputs (#29589) core[patch]: Use Blockbuster to detect blocking calls in asyncio during tests (#29043) core: release 0.3.33 (#29483) multiple: structured output tracing standard metadata (#29421) docs:Fix Imports for Document and BaseRetriever (#29473) core: release 0.3.32 (#29450) change behavior for converting a string to openai messages (#29446) core: Add ruff rules TRY (tryceratops) (#29388) core: Cache RunnableLambda repr (#29199) core: Cache RunnableLambda deps (#29200) core[patch]: fix API reference for draw_ascii (#29370) core: Bump ruff version to 0.9 (#29201) core: Auto-fix some docstrings (#29337) core: fix call to get closure vars for partial-wrapped funcs (#29316) core[patch]: 0.3.31 (#29320) core: Add ruff rule S101 (no assert) (#29267) core: Add ruff rule W293 (whitespaces) (#29272) core[patch]: release 0.3.30 (#29256) core: Add support for calls in get_function_nonlocals (#29255) DOC: Improve human input prompt in FewShotChatMessagePromptTemplate example (#29023) core: allow artifact in create_retriever_tool (#28903) core[patch]: release 0.3.29 (#29017) core[patch]: substantially speed up Daniel Edeling (@deprecated) (#29016) core[patch]: remove deprecated functions from tool binding hotpath (#29015) core[patch]: fix deprecation admonition in API ref (#28992) (Core) Small Change in Docstring for method partial for BasePromptTemplate (#28969) infra: speed up unit tests (#28974) core,anthropic[patch]: fix with_structured_output typing (#28950) core[patch]: remove redundant imports (#28861) core[patch]: release 0.3.28 (#28837) core: dont mutate tool_kwargs during tool run (#28824) fix crash when using create_xml_agent with parameterless function as … (#26002) core: typo Utilities for tests. -> Utilities for pydantic. (#28814) core: typo in runnable (#28815) core[patch]: Release 0.3.27 (#28799) core[patch], openai[patch]: Handle OpenAI developer msg (#28794) [Core] respect tracing project name cvar (#28792) core: release 0.3.26 (#28793) refactor: improve docstring parsing logic for Google style (#28730) core[patch]: export InjectedToolCallId (#28772) core: add kwargs support to VectorStore (#25934) core: xml output parser tags docstring (#28745) core: release 0.3.25 (#28718) core[patch]: throw exception indexing code if deletion fails in vectorstore (#28103) core[minor]: add new clean up strategy "scoped_full" to indexing (#28505) core[patch]: Update error message in indexing code for unreachable code assertion (#28712) core[patch]: Reverts PR #25754 and add unit tests (#28702) core[patch]: Release 0.3.24 (#28656) core,langchain,community[patch]: allow langsmith 0.2 (#28598) core[patch]: Release 0.3.23 (#28648) core[patch]: return ToolMessage from tool (#28605) core: deprecate PipelinePromptTemplate (#28644) Core: google docstring parsing fix (#28404) [Core]: Small Docstring Clarification for BaseTool (#28148) core[patch]: Fixed trim functions, and added corresponding unit test for the solved issue (#28429) core: fix path test (#28584) multiple: combine sync/async vector store standard test suites (#28580) core[patch]: Release 0.3.22 (#28582) core, tests: more tolerant _aget_relevant_documents function (#28462) core: deprecation doc removal (#28553) docs: more api ref links, add linting step to prevent more (#28495) fix: Handle response metadata in merge_messages_runs (#28453) core[patch]: release 0.3.21 (#28314) core[patch]: Compat pydantic 2.10 (#28308) core[patch]: release 0.3.20 (#28293) core[patch]: support final AIMessage responses in tool_example_to_messages (#28267) core: add space at end of error message link (#28270) core[minor]: Add other langgraph packages to sys_info (#28190) standard-tests: rename langchain_standard_tests to langchain_tests, release 0.3.2 (#28203) multiple: langchain-standard-tests -> langchain-tests (#28139) core: release 0.3.19 (#28137) core[patch]: add caching to get_function_nonlocals (#28131) core[patch]: support numpy 2 (#27991) core: release 0.3.18 (#28070) core: added DeleteResponse to the module (#28069) core[patch]: Update doc-strings in callbacks (#28073) partners: add xAI chat integration (#28032) core[patch]: release 0.3.17 (#28060) anthropic[major]: support python 3.13 (#27916) core[patch]: Release 0.3.16 (#28045) docs: new stack diagram (#27972) langchain_core: add file_type option to make file type default as png (#27855) docs: fix trim_messages docstring (#27948) core[patch]: make oai tool description optional (#27756) core: fix CommaSeparatedListOutputParser to handle columns that may contain commas in it (#26365) langchain[patch]: Add warning in react agent (#26980) core: use friendlier names for duplicated nodes in mermaid output (#27747) core[patch]: update image util err msg (#27803) core[patch]: Release 0.3.15 (#27802) core[patch]: rm image loading (#27797) Improvement [docs] Improve api docs (#27787) core[patch]: Release 0.3.14 (#27764) core[patch]: make get_all_basemodel_annotations public (#27761) core[patch]: support bedrock converse -> openai tool (#27754) Support message trimming on single messages (#27729) core: JsonOutputParser UTF characters bug (#27306) core[patch]: Improve type checking for the tool decorator (#27460) core: test runner improvements (#27654) core[patch]: improve performance of InMemoryVectorStore (#27538) all: test 3.13 ci (#27197) core[patch]: Release 0.3.13 (#27651) core: remove mustache in extended deps (#27629) core: add flake8-bandit (S) ruff rules to core (#27368) core[patch]: fix repr and str for Serializable (#26786) core[patch]: convert_to_openai_tool Anthropic support (#27591) core: fix Image prompt template hardcoded template format (#27495) core: release 0.3.12 (#27410) docs, core: error messaging [wip] (#27397) core[patch]: 0.3.11 release (#27403) core[patch]: add convert_to_openai_messages util (#27263) multiple: rely on asyncio_mode auto in tests (#27200) core[patch]: Ignore ASYNC110 to upgrade to newest ruff version (#27229) core[patch],langchain[patch],community[patch]: Bump version dependency of tenacity to >=8.1.0,!=8.4.0,<10 (#27201) core: release 0.3.10 (#27209) core[patch]: utils for adding/subtracting usage metadata (#27203) core[patch]: support ValidationError from pydantic v1 in tools (#27194) core: Add various ruff rules (#26836) core: update make format to fix all autofixable things (#27174) core: Add ruff rules for error messages (EM) (#26965) core[minor]: Improve support for id in VectorStore (#26660) core[patch]: Update AsyncCallbackManager to honor run_inline attribute and prevent context loss (#26885) core[minor]: add **kwargs to index and aindex functions for custom vector_field support (#26998) core[patch]: correct typo doc-string for astream_events method (#27108) core[patch]: Release 0.3.9 (#27117) core,integrations[minor]: Dont error on fields in model_kwargs (#27110) core: fix batch race condition in FakeListChatModel (#26924) core[patch]: exclude model cache from ser (#27086) core[patch]: add UsageMetadata details (#27072) core[patch]: Release 0.3.8 (#27046) core[patch]: Support injected tool args that are arbitrary types (#27045) core[patch]: fix init of RunnableAssign (#26903) multiple: update docs urls to latest 2 (#26837) core[patch]: improve index/aindex api when batch_size<n_docs (#25754) core[patch]: Add kwargs to Runnable (#27008) Merge pull request #26794 core[patch]: Release 0.3.7 (#27004) core[patch]: fix structured prompt template format (#27003) core: Add ruff rules for pycodestyle Warning (W) (#26964) core[patch]: Add ruff rules for flake8-simplify (SIM) (#26848) docs: Upgrade examples with RunnableWithMessageHistory to langgraph memory (#26855) core: Add ruff rules for PIE (#26939) core[fix]: using async rate limiter methods in async code (#26914) core: Fix IndexError when trim_messages invoked with empty list (#26896) core: release 0.3.6 (#26863) core: Add ruff rules for comprehensions (C4) (#26829) [Core] Add more interops tests (#26841) [Core] Inherit tracing metadata & tags (#26838) core: Run LangChainTracer inline (#26797) core[patch]: On Chain Start Fix for Chain Class (#26593) core[patch]: set default on Blob (#26787) core: release 0.3.5 (#26737) [LangChainTracer] Omit Chunk (#26602) [Tracer] add project name to run from tracer (#26736) core: fix "template" not allowed as prompt param (#26060) core: release 0.3.4 (#26729) core: In astream_events propagate cancellation reason to inner task (#26727) core: release 0.3.3 (#26713) core[patch]: Fix defusedxml import (#26718) core/langchain: fix version used in deprecation (#26724) core[patch],langchain[patch]: deprecate memory and entity abstractions and implementations (#26717) Avoid copying runs (#26689) core[patch]: support js chat model namespaces (#26688) core[patch]: Release 0.3.2 (#26686) core[patch]: Fix load of ChatBedrock (#26679) core[patch]: support load from path for default namespaces (#26675) core, community: move graph vectorstores to community (#26678) core: Add N(naming) ruff rules (#25362) core: use ruff.target-version instead (#26634) core: remove [project] tag from pyproject (#26633) core: Put Python version as a project requirement so it is considered by ruff (#26608) core[patch]: Add ruff rule UP006(use PEP585 annotations) (#26574) docs: pypi readme image links (#26590) core,openai,grow,fw[patch]: deprecate bind_functions, update chat mod… (#26584) core[patch]: Release 0.3.1 (#26581) core[patch]: Fix "argument of type 'NoneType' is not iterable" error in LangChainTracer (#26576) core[minor]: remove beta from RemoveMessage (#26579) core: release 0.3.0 (#26453) multiple: pydantic 2 compatibility, v0.3 (#26443) core[patch]: Release 0.2.40 (#26435) core: add additional import mappings to loads (#26406) core[patch]: fix empty OpenAI tools when strict=True (#26287) core[patch]: fix regression in convert_to_openai_tool with instances of Tool (#26327) core[patch]: Support non ASCII characters in tool output if user doesn't output string (#26319) Keyword-like runnable config (#26295) core[patch]: Release 0.2.39 (#26279) core[minor]: Remove serialized manifest from tracing requests for non-llm runs (#26270) core[patch]: wrap mermaid node names w/ markdown in tag (#26235) core[patch]: fix edge labels for mermaid graphs (#26201) infra: Clear cache for env-var checks (#26073) fmt fmt core[patch]: Release 0.2.38 (#25974) core[minor]: Add support for multiple env keys for secrets_from_env (#25971) docs: fix bullet list spacing (#25950) core[patch]: support additional kwargs on StructuredPrompt (#25645) core: Include global variables in variables found by get_function_nonlocals (#25936) core[patch]: handle serializable fields that cant be converted to bool (#25903) community[patch], docs: Add API reference doc for GraphVectorStore (#25751) core[patch]: Release 0.2.37 (#25900) core[patch]: dont mutate merged lists/dicts (#25858) core: prompt variable error msg (#25787) core: release 0.2.36 (#25819) core[patch]: Add B(bugbear) ruff rules (#25520) docs: improve docs for InMemoryVectorStore (#25786) core[patch]: Release 0.2.35 (#25729) all: Improve make lint command (#25344) infra: reenable min version testing 2, ci ignore ai21 (#25709) core[patch]: Fix type for inner input in base prompts (#25713) partners: Use simsimd types (#25299) core[patch]: mmr util (#25689) core: pydantic output parser streaming fix (#24415) core[patch]: Add _api.rename_parameter to support renaming of parameters in functions (#25101) core[patch]: add additionalProperties recursively to oai function if strict (#25169) infra: xfail pydantic v2 arg to py function (#25686) core[patch]: Add UP(upgrade) ruff rules (#25358) core[patch]: Remove different parent run id warning (#25683) core[patch]: support drawing nested subgraphs in draw_mermaid (#25581) core[patch]: add option to specify the chunk separator in merge_message_runs (#24783) Fix UnionType type var replacement (#25566) core[patch]: Improve some error messages and add another test for checking RunnableWithMessageHistory (#25209) infra: test convert_message (#25632) core[patch]: Release 0.2.34 (#25622) core[patch]: support oai dicts as messages (#25621) core: fix fallback context overwriting (#25550) core[minor]: add langsmith document loader (#25493) core[patch]: Allow bound models as token_counter in trim_messages (#25563) core,community: add beta decorator to missed GraphVectorStore extensions (#25562) infra: test chat prompt ser/des (#25557) core[patch]: Release 0.2.33 (#25498) core, partners: implement standard tracing params for LLMs (#25410) core[minor], anthropic[patch]: Upgrade @root_validator usage to be consistent with pydantic 2 (#25457) fireworks[patch]: Upgrade @root_validators to be pydantic 2 compliant (#25443) Merge support for group manager (#25360) core[patch]: Release 0.2.32 (#25420) core[patch]: tool import fix (#25419) core[patch]: Release 0.2.31 (#25388) core: fix issue#24660, slove error messages about ValueError when use model with history (#25183) docs: udpated api reference (#25172) core[minor]: Prevent PydanticOutputParser from encoding schema as ASCII (#25386) multiple: update removal targets (#25361) core: release 0.2.30 (#25321) core[patch]: Update API reference for fake embeddings (#25313) core[patch]: add standard tracing params for retrievers (#25240) docs: update numbering of items in docstring (#25267) core[patch]: Deprecating beta upsert APIs in vectorstore (#25069) community[patch],core[patch]: Update EdenaiTool root_validator and add unit test in core (#25233) core[patch]: use time.monotonic() instead time.time() in InMemoryRateLimiter core[patch]: fix deprecation pydantic bug (#25204) core[minor]: Add factory for looking up secrets from the env (#25198) core: autodetect more ls params (#25044) core[minor]: Add from_env utility (#25189) core[patch]: Add pydantic get_fields adapter (#25187) core[patch]: Fix aindex API (#25155) core[patch]: Add unit tests for Serializable (#25152) core[patch]: support Field deprecation (#25004) core[patch]: check for model_fields attribute (#25108) core[patch]: Release 0.2.29 (#25126) core[patch]: base language model disable_streaming (#25070) core[patch]: Relax rate limit unit tests in terms of timing (#25140) core[patch]: Sort Config attributes (#25127) core[patch]: Release 0.2.29rc1 (#25115) core[patch], openai[patch]: enable strict tool calling (#25111) core[minor]: Add support for DocumentIndex in the index api (#25100) Set Context in RunnableSequence & RunnableParallel (#25073) docs: runnable docstring space (#25106) core[patch]: Include dependencies in sys_info (#25076) docs: update numbering of items in method docs (#25093) core[patch]: Remove default BaseModel init docstring (#25009) core[patch]: Add pydantic metadata to subset model (#25032) docs: change for optional variables in chatprompt (#25017) core[patch]: exclude special pydantic init params (#25084) core[patch]: Relax time constraints on rate limit test (#25071) core[minor]: Introduce DocumentIndex abstraction (#25062) docs: show beta directive (#25013) docs: fix kwargs docstring (#25010) docs: show deprecation warning first in api ref (#25001) core[patch]: Release 0.2.28 (#25000) core[patch]: merge message runs nit (#24997) core[patch]: Release 0.2.27 (#24952) core[patch]: Fix tool args schema inherited field parsing (#24936) core: docstrings BaseCallbackHandler update (#24948) core[patch]: runnable config ensure_config deep copy from var_child_runnable… (#24862) core[patch]: In unit tests, use schema() instead of BaseModel.schema() (#24930) core[patch]: stringify tool non-content blocks (#24626) core[minor]: Add support for pydantic 2 to utility to get fields (#24899) core[patch]: Release 0.2.26 (#24898) core[patch]: Update unit tests with a workaround for using AnyID in pydantic 2 (#24892) core[patch], integrations[patch]: convert TypedDict to tool schema support (#24641) core: release 0.2.25 (#24833) core: Fix implementation of trim_first_node/trim_last_node to use exact same definition of first/last node as in the getter methods (#24802) core[patch]: introduce ToolMessage.status (#24628) core[patch]: support tool calls with non-pickleable args in tools (#24741) core[patch]: Respect injected in bound fns (#24733) core: use mypy<1.11 (#24749) Add type() in error msg (#24723) core[patch]: Correct doc-string for InMemoryRateLimiter (#24730) core[patch]: Release 0.2.24 (#24722) core[patch]: ChatPromptTemplate.init same as ChatPromptTemplate.from_… (#24486) core[minor]: Add BaseModel.rate_limiter, RateLimiter abstraction and in-memory implementation (#24669) core: Don't draw None edge labels (#24690) core[patch]: fix mutating tool calls (#24677) core[minor]: Support asynchronous in InMemoryVectorStore (#24472) core[minor]: Add InMemoryRateLimiter (#21992) core[patch]: add to RunnableLambda docstring (#24575) core[patch]: Release 0.2.23 (#24557) core[patch]: Fix word spelling error in globals.py (#24532) core[patch]: merge_content fix (#24526) community[minor]: add document transformer for extracting links (#24186) all: add release notes to pypi (#24519) core[patch]: don't serialize BasePromptTemplate.input_types (#24516) core,groq,openai,mistralai,robocorp,fireworks,anthropic[patch]: Update BaseModel subclass and instance checks to handle both v1 and proper namespaces (#24417) core[patch]: enable RunnableWithMessageHistory without config (#23775) core[patch]: Accept configurable keys top-level (#23806) core[patch]: ensure iterator in scope for atransform_stream_with_config except (#24454) core[minor]: Relax constraints on type checking for tools and parsers (#24459) core[patch]: Fix utils.json_schema.dereference_refs (#24335 KeyError: 400 in JSON schema processing) (#24337) core[patch]: Release 0.2.22 (#24423) core[patch]: core lint fix (#24447) core: In ensure_config don't copy dunder configurable keys to metadata (#24420) standard-tests[patch]: Add pytest assert rewrites (#24408) core[minor]: Support all versions of pydantic base model in argsschema (#24418) core[patch]: Update API reference for astream events (#24359) core[patch]: Release 0.2.21 (#24372) core[patch]: add InjectedToolArg annotation (#24279) core[patch]: Fix regression requiring input_variables in few chat prompt templates (#24360) core[patch]: Fix one unit test for chat prompt template (#24362) core[patch]: Release 0.2.20 (#24322) Docs: Add how to dispatch custom callback events (#24278) core: docstrings vectorstores update (#24281) core[patch]: fix Typing.cast import (#24313) core: docstrings documents (#23506) core[patch]: Add encoding options when create prompt template from a file (#24054) core[patch]: docstrings langchain_core/ files update (#24285) core[patch]: Update typing for template format to include jinja2 as a Literal (#24144) core[patch]: allow message utils to work with lcel (#23743) docs: Spell check fixes (#24217) core docstrings tracers update (#24211) core: docstrings utils update (#24213) core[patch]: Release 0.2.19 (#24272) core[patch]: support passing args_schema through as_tool (#24269) langchain[minor]: Generic configurable model (#23419) core[patch]: add tool name to tool message (#24243) core[patch]: Release 0.2.18 (#24230) core[patch]: fix ToolCall "type" when streaming (#24218) core[patch]: Mark GraphVectorStore as beta (#24195) core[patch]: Release 0.2.17 (#24189) core[minor]: rename ToolMessage.raw_output -> artifact (#24185) core[patch]: docstrings runnables update (#24161) core: release 0.2.16 (#24159) core: Remove extra newline (#24157) core[patch]: Tool accept RunnableConfig (#24143) core[minor], integrations...[patch]: Support ToolCall as Tool input and ToolMessage as Tool output (#24038) core[patch]: Release 0.2.15 (#24149) core[patch]: Update styles for mermaid graphs (#24147) core[patch]: propagate parse_docstring to tool decorator (#24123) core[patch]: Clean up indexing test code (#24139) core[patch]: add versionadded to as_tool (#24138) core: release 0.2.14, remove poetry 1.7 incompatible flag from root (#24137) core: Add metadata to graph json repr (#24131) core: fix docstring (#24129) core: mermaid: Render metadata key-value pairs when drawing mermaid graph (#24103) core[minor]: Add dispatching for custom events (#24080) core: release 0.2.13 (#24096) core[patch]: support conversion of runnables to tools (#23992) core[minor]: Add ToolMessage.raw_output (#23994) [Core] Fix fstring in logger warning (#24043) core: Speed up json parse for large strings (#24036) core: Move json parsing in base chat model / output parser to bg thread (#24031) core: release 0.2.12 (#23991) core[minor],community[patch],standard-tests[patch]: Move InMemoryImplementation to langchain-core (#23986) core[minor],community[minor]: Upgrade all @root_validator() to @pre_init (#23841) core[patch]: Use InMemoryChatMessageHistory in unit tests (#23916) core[patch]: Clarify upsert response semantics (#23921) core[patch]: Add comment to clarify aadd_documents (#23920) core, anthropic[patch]: support streaming tool calls when function has no arguments (#23915) core[minor]: Add Graph Store component (#23092) core: docstrings load (#23787) core[minor]: add upsert, streaming_upsert, aupsert, astreaming_upsert methods to the VectorStore abstraction (#23774) core[patch]: Fix typo in docstring (graphm -> graph) (#23910) core: docstrings outputs (#23889) core: docstrings prompts (#23890) core[patch]: Accounting for Optional Input Variables in BasePromptTemplate (#22851) core[patch]: Fix logic in BaseChatModel that processes the llm string that is used as a key for caching chat models responses (#23842) core[minor]: update conversion utils to handle RemoveMessage (#23840) core[patch]: Speed up unit tests for imports (#23837) core[patch]: extract input variables for path and detail keys in order to format an ImagePromptTemplate (#22613) core[patch]: docstrings output_parsers (#23825) infra: update mypy 1.10, ruff 0.5 (#23721) [Core] Unify function schema parsing (#23370) core: docstrings indexing (#23785) core: docstrings messages (#23788) core[patch]: Release 0.2.11 (#23780) core[patch]: mark RemoveMessage beta (#23656) core[patch]: fix nested sections for mustache templating (#23747) core[patch]: Add versionadded to get_by_ids (#23728) core[minor]: Create BaseMedia object (#23639) core[patch]: use async messages where possible (#23718) core[minor]: Add maxsize for InMemoryCache (#23405) core[patch]: Fix llm string representation for serializable models (#23416) core: fix NameError (#23658) core[minor]: Add get_by_ids to vectorstore interface (#23594) core: add RemoveMessage (#23636) docs[patch]: Update diagrams (#23613) core: chat * docstrings (#23412) core[patch]: Add unit test when catching generator exit (#23402) core[minor]: Add optional ID field to Document schema (#23411) docs[patch]: Update docs introduction and README (#23558) core[patch]: docstrings agents (#23502) core[patch]: callbacks docstrings (#23375) core: docstrings example_selectors (#23542) core[patch]: use args_schema doc for tool description (#23503) core: release 0.2.10 (#23420) [docs]: split up tool docs (#22919) [Core] Logging: Suppress missing parent warning (#23363) core[patch]: export tool output parsers from langchain_core.output_parsers (#23305) core[patch]: Add unit test for str and repr for Document (#23414) Merge pull request #22662 [Core] Add support for inferring Annotated types (#23284) core[minor]: update draw_mermaid node label processing (#23285) docs: fix merge message runs docstring (#23279) docs: fix trim_messages code blocks (#23271) docs: fix message transformer docstrings (#23264) core[minor]: BaseChatModel with_structured_output implementation (#22859) core[patch]: fix no current event loop for sql history in async mode (#22933) core[patch]: set schema format for AsyncRootListenersTracer (#23214) docs: BaseChatModel key methods table (#23238) docs: fix chat model methods table (#23233) core[patch]: Fix doc-strings for code blocks (#23232) core[patch]: Add clarification about streaming to RunnableLambda (#23227) Fix return value type of dumpd (#20123) core(patch): Fix encoding problem of load_prompt method (#21559) core[minor]: Adds an in-memory implementation of RecordManager (#13200) core:Add optional max_messages to MessagePlaceholder (#16098) core[patch]: Document agent schema (#23194) core[patch]: Document messages namespace (#23154) core[patch]: Add doc-strings to outputs, fix @root_validator (#23190) core[patch[: add exceptions propagation test for astream_events v2 (#23159) core[patch]: fix chat history circular import (#23182) core[patch]: Add an example to the Document schema doc-string (#23131) core[patch]: update test to catch circular imports (#23172) core[patch]: Add documentation to load namespace (#23143) core[patch]: Add doc-string to document compressor (#23085) core[patch]: Expand documentation in the indexing namespace (#23134) core[patch]: Document embeddings namespace (#23132) core[patch]: Update documentation in LLM namespace (#23138) core[patch]: runnablewithchathistory from core.runnables (#23136) core[minor]: handle boolean data in draw_mermaid (#23135) core[patch]: Pin pydantic in py3.12.4 (#23130) docs: Fix URL formatting in deprecation warnings (#23075) core[minor]: Support multiple keys in get_from_dict_or_env (#23086) core[patch]: Release 0.2.9 (#23091) core[patch]: Document BaseStore (#23082) core[patch],community[patch],langchain[patch]: tenacity dependency to version >=8.1.0,<8.4.0 (#22973) Include "no escape" and "inverted section" mustache vars in Prompt.input_variables and Prompt.input_schema (#22981) core[minor]: message transformer utils (#22752) core[patch]: Release 0.2.8 (#23012) core: run_in_executor: Wrap StopIteration in RuntimeError (#22997) core: release 0.2.7 (#22917) core: in astream_events v2 always await task even if already finished (#22916) core[patch]: Fix FunctionCallbackHandler._on_tool_end (#22908) core[patch]: fix validation of @deprecated decorator (#22513) core: release 0.2.6 (#22868) core[patch]: Treat type as a special field when merging lists (#22750) core: In astream_events v2 propagate cancel/break to the inner astream call (#22865) core[patch]: allowing latest packaging versions (#22792) ci: add testing with Python 3.12 (#22813) core[patch]: Update remaining root_validators (#22829) core[patch]: update some root_validators (#22787) core: fix mustache falsy cases (#22747) core[patch]: Add missing type annotations (#22756) core: add error message for non-structured llm to StructuredPrompt (#22684) [Core] Unified Enable/Disable Tracing (#22576) multiple: get rid of pyproject extras (#22581) core[patch]: Release 0.2.5 (#22642) core[patch]: Correctly order parent ids in astream events (from root to immediate parent), add defensive check for cycles (#22637) core[minor]: Add parent_ids to astream_events API (#22563) core[minor]: Add an async root listener and with_alisteners method (#22151) core[patch]: Use explicit classes for InMemoryByteStore and InMemoryStore (#22608) docs: Fix description (#22611) docs: Fix typo (#22603) core[patch]: Improve VectorStore API doc (#22547) core[patch]: Add similarity_score_threshold to VectorStore search types (#22477) core[patch]: Deduplicate of callback handlers in merge_configs (#22478) core[patch]: Release 0.2.4 (#22489) core[patch]: bump langsmith (#22476) Use immutable sequence type for batch/batch_as_completed types (#22433) core[patch]: Fix VectorStore's as_retriever mutating tags param (#22470) core(patch):fix partial_variables not working with SystemMessagePromptTemplate (#20711) core[patch]: RFC: Allow concatenation of messages with multi part content (#22002) core: In BaseRetriever make get_relevant_docs delegate to invoke (#22434) core: In RunnableSequence pass kwargs to the first step (#22393) core[patch]: Release 0.2.3 (#22329) core[patch]: fix runnable history and add docs (#22283) [Core] Update Tracing Interops (#22318) core[patch]: Release 0.2.2 (#22289) core[patch]: allow access RunnableWithFallbacks.runnable attrs (#22139) core[patch]: Add TypeError handler into get_graph of Runnable (#19856) docs: fix some spelling mistakes caught by newest version of code spell (#22090) core: bump to 0.2.1rc (#22080) core, partners: add token usage attribute to AIMessage (#21944) infra: rm unused # noqa violations (#22049) core[patch]: Release 0.2.1 (#22003) core[patch]: Add unit test for RunnableGenerator for eventstream v2 (#21990) core[patch]: In astream_events(version=v2) tap output of root run (#21977) docs: set default anthropic model (#21988) core[patch]: Fix NPE in function_calling._get_python_function_required_args (#21863) Fix base.py typo (#21862) docs: lcel how to and cheatsheet (#21851) core: Tap output of sync iterators for astream_events (#21842) core[patch]: Check if event loop is closed in memory stream (#21841) core: release 0.2.0 (#21829) core, standard tests, partner packages: add test for model params (#21677) core[major]: only use function description (#21622) Finish agent migration doc (#21731) [Core] Check is async callable (#21714) core[minor]: Add v2 implementation of astream events (#21638) docs: update structured how to (#21679) core[patch]: Update mypy config (#21684) core[patch]: Add unit tests with some streaming scenarios (#21668) core[patch]: Add unit test to catch ordering (#21669) core[patch]: Fix typo in VectorStoreExampleSelector doc-string (#21574) multiple: core 0.2 nonbreaking dep, check_diff community->langchain dep (#21646) core[major]: AsyncCallbackManagerForToolRun no longer casts return object to string (#20374) core[patch]:Fix Incorrect listeners parameters for Runnable.with_listeners() and .map() (#20661) core: allow mermaid node labels to have any characters (#21385) core: release 0.1.52 (#21350) fix: core: Include in json output also fields set outside the constructor (#21342) core: release 0.1.51 (#21328) core[patch]: utils.guard_import fix (#21133) fix: core: draw_mermaid() would create subgroup for edges with same src and tgt (#21275) (all): update removal in deprecation warnings from 0.2 to 0.3 (#21265) core: release 0.1.50 (#21230) core: tracer: remove numeric execution order (#21220) core[patch]: Release 0.1.49 (#21211) core[patch]: Fixes for convert_messages (#21207) [Core] Tracing: update parent run_tree's child_runs (#21049) core: release 0.1.48 (#21113) core[minor],langchain[patch],community[patch]: Move storage interfaces to core (#20750) core: release 0.1.47 (#21094) [Patch] Dedent docstring (#20959) community[minor]: Add async methods to CassandraCache and CassandraSemanticCache (#20654) [Core] Feat Pretty Print Tool calls (#20997) core[patch[: docstring update (#21036) Ignore self/cls from required args of class functions in convert_to_openai_tool (#20691) Catch System Error in ast parse (#20961) core[patch]: Enhance link extraction with query parameters (#20259) core[minor], community[patch], langchain[patch]: move BaseChatLoader to core (#19607) core: fix batch ordering test (#20952) remove placeholder error message (#20340) Use lstv2 (#20747) core[patch]: improve comma separated list output parser to handle non-space separated list (#20434) core, community: deprecate tool.__call__ (#20900) core[minor], langchain[patch], community[patch]: mv StructuredQuery (#20849) core[patch]: Release 0.1.46 (#20891) [Core] Feat: update config CVar in tool.invoke (#20808) support messages in messages out (#20862) docs, multiple: de-beta with_structured_output (#20850) Better support for subgraphs in graph viz (#20840) core[minor],langchain[patch]: Move base indexing interface and logic to core (#20667) core[patch],community[patch]: Move file chat history back to community (#20834) core: use qualname in beta message (#20361) community[patch],core[minor]: Move in memory cache implementation to core (#20753) core[patch]: Remove autoupgrade to addable dict in Runnable/RunnableLambda/RunnablePassthrough transform (#20677) core[minor],langchain[patch],community[patch]: Move InMemory and File implementations of Chat History to core (#20752) core, openai: support custom token encoders (#20762) community[patch],core[minor]: Move BaseToolKit to core.tools (#20669) patch: deprecate (a)get_relevant_documents (#20477) core: release 0.1.45 (#20664) core[patch]: Fix runnable map ser/de (#20631) core: deprecation default to qualname (#20578) core: fix fireworks mapping (#20613) community, core[callbacks]: move FileCallbackHandler from community to core (#20495) docs: aws docs updates (#20571) core: fix attributeerror in runnablelambda.deps (#20569) core[patch]: Release 0.1.44 (#20564) anthropic[patch]: serialization in partner package (#18828) core: default chat/llm _identifying_params to lc_attributes (#20232) Runnable graph viz improvements (#20529) Fix getattr in runnable binding for cases where config is passed in as arg too (#20528) core[minor], langchain[patch]: tools dependencies refactoring (#18759) community[minor]: Add glue catalog loader (#20220) core[patch]: Fix imports defined in messages sub-package (#20500) core: release 0.1.43 (#20489) core: forward config params to default (#20402) core: Add concept of conditional edge to graph rendering (#20480) Remove logic to exclude intermediate nodes from rendering time (#20459) Fix CDN URL in mermaid graph renderer (#20381) docs: Refine RunnablePassthrough docstring (#19812) community[patch]: update use of deprecated llm methods (#20393) core[patch]: configurable init params (#20070) core: bind_tools interface on basechatmodel (#20360) core[patch]: Update documentation for base retriever (#20345) docs: Update documentation for custom LLMs (#19972) core[patch]: Release 0.1.42 (#20332) mistral[patch]: add IDs to tool calls (#20299) core[patch]: For now remove user warning (#20321) core[patch]: fix ChatGeneration.text with content blocks (#20294) core[patch]: include tool_calls in ai msg chunk serialization (#20291) core: mustache prompt templates (#19980) update agents to use tool call messages (#20074) infra, multiple: rc release versions (#20252) core[patch]: Pre-release 0.1.42-rc.1 (#20248) core[minor], ...: add tool calls message (#18947) core[patch]: Release 0.1.41 (#20233) core[minor]: Implement aformat_messages for _StringImageMessagePromptTemplate (#20036) core[minor]: Implement aformat for FewShotPromptWithTemplates (#20039) [core] fix: manually specifying run_id for chat models.invoke() and .ainvoke() (#20082) langchain-core[minor]: Allow passing local cache to language models (#19331) core[patch]: Document BaseCache abstraction in code (#20046) core[minor]: Implement aformat_prompt and ainvoke in BasePromptTemplate (#20035) core[minor]: Add async aformat_document method (#20037) Merge pull request #20038 anthropic[minor]: tool use (#20016) core[minor]: support pydantic V2 for JSONOutputParser, allow for other sources of JSON schemas (#19716) core[minor]: Add aformat to FewShotPromptTemplate (#19652) core[patch]: mypy ignore fixes #17048 (#19931) core: fix try_load_from_hub for older langchain versions load_chain (#19964) core[minor]: Add aload to document loader (#19936) core: fix return of draw_mermaid_png and change to not save image by default (#19950) core[patch]: Release 0.1.39 (#19940) core: BaseChatModel modify chat message before passing to run_manager (#19939) core[patch]: remove requests (#19891) core[patch]: Release 0.1.38 (#19895) Core[major]: Base Tracer to propagate raw output from tool for on_tool_end (#18932) core: Assign missing message ids in BaseChatModel (#19863) core: Add docs for RunnableConfigurableFields (#19849) core: generate mermaid syntax and render visual graph (#19599) core[patch]: Release 0.1.37 (#19831) dont mutate metadata/tags (#19742) core[minor]: Add aformat_messages to FewShotChatMessagePromptTemplate and ChatPromptTemplate (#19648) core[patch]:: XML parser to cover the case when the xml only contains the root level tag (#17456) core[patch]: fix beta, deprecated typing (#18877) core[runnables]: docstring for class RunnableSerializable, method configurable_fields (#19722) core[runnables]: docstring of class RunnableSerializable, method configurable_alternatives (#19724) core[patch]: Fix jsonOutputParser fails if a json value contains ``` inside it. (#19717) core[patch], infra: release 0.1.36, run partner CI on core PRs (#19688) core: Two updates to chat model interface (#19684) core[patch]: ToolException docs/exception message (#17590) core[minor]: Add async methods to MaxMarginalRelevanceExampleSelector (#19639) core[minor]: support pydantic v2 models in PydanticOutputParser (#18811) docs: Improve docstring for Runnable bind method (#19659) core: Add async methods to LengthBasedExampleSelector (#19640) core[patch]: Release 0.1.35 (#19660) core[patch]: Patch XML vulnerability in XMLOutputParser (CVE-2024-1455) (#19653) core[patch]: XMLOutputParser fix to handle changes to xml standard library (#19612) docs: Update docstring for MessagesPlaceholder (#19601) core[patch]: Release 0.1.34 (#19609) load: Optionally disable reading secrets from env (#19596) core[patch]: Temporarily disable test for streaming xml parser (#19610) core[patch]: Reverting changes with defusedXML (#19604) core[patch]: Remove anyio dependency (#19583) core[minor]: Use BaseChatMessageHistory async methods in RunnableWithMessageHistory (#19565) core: Add async methods to BaseExampleSelector and SemanticSimilarityExampleSelector (#19399) core[minor]: Add default implementations to amax_marginal_relevance_search_by_vector and adelete (#19269) docs: Add in code documentation to core Runnable map methods (docs only) (#19517) core[patch]: fix xml output parser transform (#19530) core[runnables]: docstring for class runnable, method with_listeners() (#19515) core[patch]: Use defusedxml in XMLOutputParser (#19526) docs: docstring Runnable pipe and pick methods (docs only) (#19395) core[minor]: Add utility code to create tool examples (#18602) core[patch]: allow "placeholder" type in from_messages tuples (#19152) core[patch]: Release 0.1.33 (#19348) [Feat] Accept non-dict if only 1 prompt input variable (#19156) core: Updated docstring for RunnablePick (#18832) core[patch]: Update messages namespace to fix API reference docs (#19161) core: Simplify astream logic in BaseChatModel and BaseLLM (#19332) core: implement a batch_size parameter for CacheBackedEmbeddings (#18070) code[patch]: Add in code documentation to core Runnable with_retry method (docs only) (#19192) core[patch]: Pass sync run manager for sync stream fallback in astream (#19280) core[patch]: Move globals to a module instead of a package (non breaking change) (#19159) core[minor]: Enhance cache flexibility in BaseChatModel (#17386) core: update _rm_titles to account for title argument name bug (#19036) core: Updated docstring for Context class (#19079) core: Fix Exception handling in XMLOutputParser (#19126) [Enhancement] Add support for directly providing a run_id (#18990) core[patch]: Add LLM output to message response_metadata (#19158) core[minor]: moved fake llms and embeddings to core (#19226) docs: Add docs for RouterRunnable (#19191) docs: Add in code documentation to core Runnable with_fallbacks method (docs only) (#19104) core[minor]: allow LLMs async streaming to fallback on sync streaming (#18960) community, langchain, infra: revert store extended test deps outside of poetry (#19153) community, langchain, infra: store extended test deps outside of poetry (#18995) core[patch]: rc release 0.1.33-rc.1 (#19103) core[patch]: Change structured prompt lc id to match js (#19099) core[patch]: RunnablePassthrough transform to autoupgrade to AddableDict (#19051) code[patch]: Add in code documentation to core Runnable assign method (docs only) (#18951) core[patch]: Release 0.1.32 (#19088) core: Runnable pass kwargs to _astream_log_implementation in astream_log (#19055) Add new beta StructuredPrompt (#19080) core[minor]: Add Runnable.batch_as_completed (#17603) core[patch]: release 0.1.31 (#18989) core[patch]: fixed circular dependency with json schema (#18657) core[minor]: add streaming support to OAI tool parsers (#18940) core[minor]: generation info on msg (#18592) core[patch]: support labeled json schema as tools (#18935) core[patch]: move some attr/methods to BaseLanguageModel (#18936) core[major]: On Tool End Observation Casting Fix (#18798) core: add in-code docs for RunnableAssign class (#18826) core[patch]: fix arbitrary config keys (#18827) core[minor]: Chat Models to fallback astream to fallback on sync stream if available (#18748) core[minor]: add BaseMessage.response_metadata (#18699) core[patch]: improve PydanticOutputParser typing (#18740) core[patch]: Automatic upgrade to AddableDict in transform and atransform (#18743) Docs: Add custom parsing documentation and extending langchain (#18331) core: upgrade mypy to recent mypy (#18753) community: If load() has been overridden, use it in default lazy_load() (#18690) core[patch]: release 0.1.30 (#18706) core: Move document loader interfaces to core (#17723) core[patch]: deprecate hwchase17/langchain-hub, address path traversal (#18600) core[patch]: Release 0.1.29 (#18530) infra: fake model invoke callback prior to yielding token (#18286) docs: runnable module description (#17966) Fix missing labels (#18356) [Core] Patch: rm dumpd of outputs from runnables/base (#18295) multiple[patch]: fix deprecation versions (#18349) core[patch]: deprecation docstring with lib (#18350) core[patch]: Release 0.1.28 (#18341) Add PNG drawer for Runnable.get_graph() (#18239) Remove check preventing passing non-declared config keys (#18276) docs: deprecation of OpenAI functions agent, astream_events docstring (#18164) core[patch]: Release 0.1.27 (#18159) core[minor]: move document compressor base (#17910) core[patch]: support JS message serial namespaces (#18151) langchain[patch], core[patch], openai[patch], fireworks[minor]: ChatFireworks.with_structured_output (#18078) core[patch], langchain[patch], templates: move openai functions parsers to core (#18060) Improve runnable generator error messages (#18142) Fix bug with using configurable_fields after configurable_alternatives (#18139) Add BaseMessage.id (#17835) core[patch]: Runnable with message history to use add_messages (#17958) core[patch]: Release 0.1.26 (#17990) docs, templates: update schema imports to core (#17885) core[minor], openai[minor], langchain[patch]: BaseLanguageModel.with_structured_output #17302) docs: modules descriptions (#17844) core: fix .bind when used with RunnableLambda async methods (#17739) core[patch]: Release 0.1.25 (#17833) Add JSON representation of runnable graph to serialized representation (#17745) Docs: Add custom chat model documenation (#17595) Cache calls to create_model for get_input_schema and get_output_schema (#17755) core[patch]: Release 0.1.24 (#17744) docs: Fix bug that caused the word "Beta" to appear twice in doc-strings (#17704) core[patch], community[patch], langchain[patch], experimental[patch], robocorp[patch]: bump LangSmith 0.1.* (#17567) docs: Fix bug that caused the word "Deprecated" to appear twice in doc-strings (#17615) core[minor]: add name to basemessage (#17539) langchain.core : Use shallow copy for schema manipulation in JsonOutputParser.get_format_instructions (#17162) core[patch]: Release 0.1.23 (#17479) core: improve None value processing in merge_dicts() (#17462) core[patch]: Support .yml extension for YAML (#16783) infra: unit testing check_package_version (#16825) core[patch]: Replace memory stream implementation used by LogStreamCallbackHandler (#17185) Support serialization when inputs/outputs contain generators (#17338) infra: add print rule to ruff (#16221) infra, multiple: Upgrade configuration for Ruff v0.2.0 (#16905) core[patch]: docstring update (#16813) core[patch]: Add unit test to cover different streaming format for json parsing (#17063) core[patch]: Release 0.1.22 (#17274) [Langchain_core]: Added Docstring for RunnableConfigurableAlternatives (#17263) langchain[minor], core[minor]: update json, pydantic parser. add openai-json structured output runnable (#16914) langchain[minor], community[minor], core[minor]: Async Cache support and AsyncRedisCache (#15817) Fix stream events/log with some kinds of non addable output (#17205) core[patch]: Release 0.1.21 (#17202) core[patch], community[patch]: link extraction continue on failure (#17200) core[patch]: Release 0.1.20 (#17194) core[minor]: Use batched tracing in sdk (#16305) Add trace_as_chain_group metadata (#17187) core[patch]: Release 0.1.19 (#17117) core[patch]: Add astream events config test (#17055) Add prompt metadata + tags (#17054) docs: update parse_partial_json source info (#17036) Fix condition on custom root type in runnable history (#17017) Shield callback methods from cancellation: Fix interrupted runs marked as pending forever (#17010) infra: add -p to mkdir in lint steps (#17013) core[patch]: Add langsmith to printed sys information (#16899) Add async methods to BaseChatMessageHistory and BaseMemory (#16728) core[patch]: Fixed bug in dict to message conversion. (#17023) core[patch]: handle some optional cases in tools (#16954) core[patch]: Add doc-string to RunnableEach (#16892) core[patch]: doc init positional args (#16854) core[patch]: Message content as positional arg (#16921) core[patch]: fix chat prompt partial messages placeholder var (#16918) core[minor]: add validation error handler to BaseTool (#14007) core[patch]: Remove deep copying of run prior to submitting it to LangChain Tracing (#16904) core[patch]: Hide aliases when serializing (#16888) Fix loading of ImagePromptTemplate (#16868) core[patch]: Release 0.1.18 (#16870) Add async methods to BaseStore (#16669) core(minor): Add bulk add messages to BaseChatMessageHistory interface (#15709) docs: Update doc-string in base callback managers (#15885) Fix Dep Recommendation (#16793) docs: add csv use case (#16756) core[patch]: preserve inspect.iscoroutinefunction with @beta decorator (#16440) core[patch]: Release 0.1.17 (#16737) core: expand docstring for RunnableGenerator (#16672) Core: fix Anthropic json issue in streaming (#16670) core[minor]: Image prompt template (#14263) In stream_event and stream_log handle closed streams (#16661) Accept message-like things in Chat models, LLMs and MessagesPlaceholder (#16418) core: expand docstring for RunnableParallel (#16600) docs: Update in code documentation for runnable with message history (#16585) core[patch]: Release 0.1.16 (#16589) core[patch], community[patch], openai[patch]: consolidate openai tool… (#16485) core[patch]: passthrough BaseRetriever.invoke(**kwargs) (#16551) core[patch]: consolidate conditional in BaseTool (#16530) Remove double line (#16426) core[patch]: Release 0.1.15 (#16473) Core[Patch] Parse tool input after on_start (#16430) core[patch] Do not try to access attribute of None (#16321) core[patch]: Fix f-string formatting in error message for configurable_fields (#16411) infra: absolute EXAMPLE_DIR path in core unit tests (#16325) multiple: update langsmith dep (#16407) core[patch]: preserve inspect.iscoroutinefunction with @deprecated decorator (#16295) core[patch]: Release 0.1.14 (#16382) core[patch], community[patch], langchain[patch], docs: Update SQL chains/agents/docs (#16168) core[patch]: Remove print statement on missing grandalf dependency in favor of more explicit ImportError (#16326) Docs: Update README.md in core (#16329) core[patch]: Update sys info information (#16297) core[patch] Fix tracer output of streamed runs with non-addable output (#16324) core[patch]: simple fallback streaming (#16055) astream_events: Add version parameter while method is in beta (#16290) core[patch]: Release 0.1.13 (#16287) core[patch], openai[patch]: Chat openai stream logprobs (#16218) core[minor]: RFC Add astream_events to Runnables (#16172) Use env for revision id if not passed in as param; use git describe as backup (#16227) core[patch]: testing add chat model for unit-tests (#16209) Update readme (#16160) core[patch]: Release 0.1.12 (#16161) core[patch]: support old core namespaces (#16155) docs: in RunnableRetry, correct the example snippet that uses with_retry method on Runnable (#16108) google-vertexai[minor]: add function calling on VertexAI (#15822) core[patch]: Release 0.1.11 (#16100) core[patch]: pass exceptions to fallbacks (#16048) core[patch]: simple prompt pretty printing (#15968) Batch update of alt text and title attributes for images in md/mdx files across repo (#15357) stop making copies of inputs (#15926) Passthrough configurable primitive values as tracer metadata (#15915) core[patch]: release 0.1.10 (#15911) add old serializable mapping (#15906) core[patch]: release 0.1.9 (#15794) core[patch]: add alternative_import to deprecated (#15781) core(minor): Add a way to print out system information for debugging purposes. (#15718) core[patch]: Release 0.1.8 (#15677) Do not issue beta or deprecation warnings on internal calls (#15641) Populate streamed_output for all runs handled by atransform_stream_with_config (#15599) docs: langchain-openai (#15513) core[patch]: deprecate v1 tracer (#15608) core[patch]: Release 0.1.7 (#15610) openai[minor]: implement langchain-openai package (#15503) core[patch], community[patch]: mark runnable context, lc load as beta (#15603) core[patch]: add beta decorator (#15589) core[minor], langchain[minor]: deprecate old Chain and LLM methods (#15499) core[patch]: Further restrict recursive URL loader (#15559) core[patch]: Release 0.1.6 (#15547) core[patch], langchain[patch], community[patch]: Revert #15326 (#15546) core[patch]: Release 0.1.5 (#15480) Patch: improve type hint (#15451) core[patch]: update LanguageModelInput from List to Sequence (#14405) adding vectorstore_kwarg attribute to search_similarity function (#14604) core: update json output parser (#15079) core:adds tests for partial_variables (#15427) docs, experimental[patch], langchain[patch], community[patch]: update storage imports (#15429) add get prompts method (#15425) Use tz-aware utc datetimes in tracer (#15187) docs, community[patch], experimental[patch], langchain[patch], cli[pa… (#15412) Fetch runnable config from context var inside runnable lambda and runnable generator (#15334) langchain[patch], experimental[patch]: replace langchain.schema imports (#15410) Calculate trace_id and dotted_order client side (#15351) Update _retrieve_ref inside json_schema.py to include an isdigit() check (#14745) Docs: add param comment for tracing_v2_enabled (#15308) Catch type errors in dumps/dumpd (#15336) Propagate context vars in all classes/methods (#15329) Delete V1 tracer and refactor tracer tests to core (#15326) Fix executor Patch: improve check openai version (#15301) core: Update messages/__init__.py to account for AIMessageChunk which breaks message history runnable. (#15327) old py compat Propagate context vars in all classes/methods [core] add test for json parser (#15297) Improve markdown list parser (#15295) core[patch]: Release 0.1.4 (#15319) Strip code block fences and extra test from xml when doing streaming … (#15293) core, community: propagate context between threads (#15171) Make all json parsing less strict by default (#15287) [core, langchain] modelio code improvements (#15277) Update passthrough.py (#15252) Fix: Use Union instead of | to improve compatibility, fix #15244 (#15245) Add .pick and .assign methods to Runnable (#15229) Implement nicer runnable seq constructor, Propagate name through Runn… (#15226) Add create_conv_retrieval_chain func (#15084) [core] prompt changes (#15186) Better input and output schemas for chains that start or end with a R… (#15185) Implement RunnablePassthrough.pick() (#15184) Implement stream and astream for RunnableLambda (#14794) Fix runnable vistitor for funcs without pos args (#15182) [core: minor] fix getters (#15181) [core] langauge model like (#15180) [core] print ascii (#15179) Improve graph repr for runnable passthrough and itemgetter (#15083) Nc/dec22/runnable graph lambda (#15078) core(minor): Allow explicit types for ChatMessageHistory adds (#14967) Improve: remove extra spaces in get_from_env error (#15064) Add Runnable.get_graph() to get a graph representation of a Runnable (#15040) infra: Fix test filesystem paths incompatible with windows (#14388) Move json and xml parsers to core (#15026) Add option to make messages placeholder optional (#15031) core[patch]: Release 0.1.3 (#15022) Implement streaming for all list output parsers (#14981) core[patch]: update langchain-core runtime library name (#14884) core(minor): Implement stream and astream for RunnableBranch (#14805) core[patch]: 0.1.2 (#14959) docstrings core update (#14871) add methods to deserialize prompts that were old (#14857) docs: developer docs (#14776) [Tracing] String Stacktrace (#14131) core[patch]: Release 0.1.1 (#14738) core[patch]: Fix runnable with message history (#14629) \Fix tool_calls message merge (#14613) docs: fix links in readme (#14624) docs: core and community readme (#14623) core[minor]: Release 0.1.0 (#14607) allow other namespaces (#14606) Update RunnableWithMessageHistory (#14351) infra: import checking bugfix (#14569) infra: import CI speed (#14566) infra: import CI fix (#14562) core[patch]: Release 0.0.13 (#14558) Move runnable context to beta (#14507) community[major], core[patch], langchain[patch], experimental[patch]: Create langchain-community (#14463) RunnableWithMessageHistory: Fix input schema (#14516) manual mapping (#14422) core[patch], langchain[patch], experimental[patch]: import CI (#14414) Use deepcopy in RunLogPatch (#14244) core[patch]: Release 0.0.12 (#14415) core[patch], langchain[patch]: fix required deps (#14373) core[patch]: Release 0.0.11 (#14367) [core/minor] Runnables: Implement a context api (#14046) core[patch]: message history error typo (#14361) core[patch], langchain[patch]: ByteStore (#14312) Update doc-string in RunnableWithMessageHistory (#14262) Adding BaseChatMessageHistory. str (#14311) Fixing empty input variable crashing PromptTemplate validations (#14314) core[patch]: Release 0.0.10 (#14303) Harrison/delegate from template (#14266) fix: call _on_llm_error() (#13581) core[patch]: add response kwarg to on_llm_error langchain[patch]: Fix config arg detection for wrapped lambdarunnable (#14230) Fix Azure Openai function calling in streaming mode (#13768) Removing extra StdOutCallbackHandler overridden methods (#14136) core[patch]: Release 0.0.9 (#14182) core[patch]: BaseTracer helper method for Run lookup (#14139) core[minor], langchain[patch], experimental[patch]: Added missing py.typed to langchain_core` (#14143) Update Prompt Format Error (#14044) core[patch]: release 0.0.8 (#14086) core[patch]: Add **kwargs to Langchain's dumps() to allow passing of json.dumps() … (#10628) infra[patch]: add base deps and fix docs lint (#13998) core[patch]: release 0.0.7 (#13989) Track RunnableAssign as a separate run trace (#13972) In Runnable.stream_log build up final_output from adding output chunks (#12781) Fixes for opengpts release (#13960) infra[patch], langchain[patch]: fix test deps and upper bound langchain dep on core(#13984) fix merge None value and non None value error (#13703) RELEASE: core 0.0.7 (#13973) RunnableLambda: create afunc instance from func when not provided (#13408) Implement stream() and astream() for agents (#12783) langchain[patch], core[patch]: Make common utils public (#13932) Document Runnable Binding (#13927) RELEASE: 0.0.341 (#13926) improvement: fix chat prompt loading from config (#13818) Add option to prefix config keys in configurable_alts (#13714) DOCS: fixed error in the docstring of RunnablePassthrough class (#13843) RELEASE: core 0.0.6 (#13853) BUGFIX: Add import types and typevars from core (#13829) RELEASE: core 0.0.5 (#13786) IMPROVEMENT: filter global warnings properly (#13754) Add Batch Size kwarg to the llm start callback (#13483) RELEASE: core 0.0.4 (#13745) REFACTOR: combine core documents files (#13733) BUGFIX: add prompt imports for backwards compat (#13702) IMPROVEMENT: Conditionally import core type hints (#13700) BUGFIX: llm backwards compat imports (#13698) BUGFIX: handle tool message type when converting to string (#13626) Added partial_variables to BaseStringMessagePromptTemplate.from_template(...) (#13645) INFRA: Lint for imports (#13632) BUG: more core fixes (#13665) REFACTOR: Refactor langchain_core (#13627) Separate out langchain_core package (#13577)