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fix(langchain): persist context-editing clears via the actual model-call edit Address review feedback on the ContextEditingMiddleware persistence fix: recomputing the edit in after_model with count_tokens_approximately could disagree with wrap_model_call's decision under token_count_method="model" (different counters could clear a different set of messages, or none at all). Instead, wrap_model_call/awrap_model_call now persist the exact messages the edit changed for the real model request via an ExtendedModelResponse + Command update, so the checkpointer's view always matches what the model actually saw, regardless of token_count_method. Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

nm/langchain/context-editing-persist-clears

14 minutes ago

fix(langchain,anthropic): fix batch of near-trivial bugs Closes #34274 Closes #38718 Closes #36409 Closes #35852 Closes #38465 - LLMToolEmulator: remove redundant double-check when building tools_to_emulate, and make model a required keyword argument instead of silently defaulting to an Anthropic model that required langchain-anthropic to be installed. - Re-export PIIMatch from langchain.agents.middleware so custom PII detector authors don't need the private _redaction module. - Add a state_schema parameter to wrap_tool_call, matching the other middleware decorators. - Fix the Claude file-tool dispatch in langchain-anthropic to populate old_path alongside path, fixing a KeyError on every rename command. Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

nm/langchain/fix-batch-bug-reports

14 minutes ago

chore(langchain): export PIIMatch

hunter/export-pii-match

27 minutes ago

fix(langchain): preserve final repeated schema ordering

fix/langchain-last-schema-wins

35 minutes ago

fix(core): handle falsy chat model caches

fix/falsy-llm-cache

37 minutes ago

feat(langchain): filter internal middleware model calls from `messages` projection (#39252) Closes #34139 #34382 `SummarizationMiddleware`, `LLMToolEmulator`, and `LLMToolSelectorMiddleware` make internal model calls for bookkeeping, but these were indistinguishable from the agent's main model call in the event stream. This PR tags internal calls in config metadata and adds an `InternalCallTransformer` that filters them from `run.messages` and the raw event log. Note: If a user wants to stream the internal LLM calls, needs to build a custom transformer around it --------- Co-authored-by: Devbyteai <abud6673@gmail.com>

master

2 hours ago

Merge branch 'master' into nishitha/langchain/filter-internal-model-calls-from-messages

nishitha/langchain/filter-internal-model-calls-from-messages

2 hours ago

chore: bump aiohttp from 3.14.1 to 3.14.3 in /libs/langchain_v1 (#39242) Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.14.1 to 3.14.3. Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

master

3 hours ago

Latest Branches

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fix(langchain): persist `ClearToolUsesEdit` clears via `after_model`#39265

17 minutes ago

ed4462a

nm/langchain/context-editing-persist-clears

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fix(langchain,anthropic): fix batch of near-trivial bugs#39288

18 minutes ago

0854c51

nm/langchain/fix-batch-bug-reports

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chore(langchain): export PIIMatch#39287

32 minutes ago

a2a41c9

hunter/export-pii-match

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