Pull requests

• fix(aws): convert tool blocks to text when no tools are bound

  #11713·Rishi-8 opened Sep 23, 2026·

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• fix(langchain): return failed returnDirect tool calls to the model

  #11712·Brian Love (blove) opened Sep 23, 2026·

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• fix(textsplitters): use char length for loc.lines with custom lengthFunction

  #11709·Olamide Faniyan (Pajimo) opened Sep 23, 2026·

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• feat(anthropic,openai): support tool changes in system messages

  #11707·Richard Scarrott (richardscarrott) opened Sep 23, 2026Contributor·

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• fix(openrouter): round-trip reasoning_details, surface mid-stream errors, honor disableStreaming

  #11704·Vladimir Babin (chiliec) opened Sep 23, 2026Contributor·

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• test(textsplitters): pin the chunkOverlap contract across separator b…

  #11703·Rosemonder (CodeMan-cmd) opened Sep 23, 2026·

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• fix(google): capture stream request callbacks

  #11701·Wu Shuwen (dajiaohuang) opened Sep 23, 2026·

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• fix(mongodb): escape namespaces when yielding store keys

  #11697·wj (WenJing95) opened Sep 23, 2026·

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• fix(google): support Gemini VALIDATED tool choice

  #11696·dvd233 (dvd233) opened Sep 23, 2026·

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• feat(openai,anthropic): update provider sdks, add new model compat

  #11695·Hunter Lovell (hntrl) opened Sep 22, 2026Member·

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• fix(openai): clear 43 of 94 type errors

  #11694·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• fix(infra): widen core tool-call type, fix configuration drift, enrol perplexity

  #11693·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• fix(infra): declare missing test dependencies, enrol standard-tests

  #11692·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• fix(infra): clear type errors in six providers and enrol them

  #11691·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• fix(openai): send tool result images so the model can see them

  #11690·Thushanth Bengre (thushanth-bengre-langchain) opened Sep 22, 2026Contributor·

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• chore(infra): add @types/node where packages use node globals

  #11689·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• chore(infra): declare tsconfig globals and fix standard-tests references

  #11688·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• feat(infra): add a real typecheck gate in CI

  #11687·Baihao Wang (byhow) opened Sep 22, 2026Member·

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• chore: version packages

  #11683·github-actions[bot] opened Sep 22, 2026Bot·

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• feat(typesafe): infer answer types from the questions asked

  #11679·Allan Lancioni (allan-lancioni) opened Sep 21, 2026·

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• fix(core): RunnableWithFallbacks.batch supports returnExceptions

  #11673·igdj-arif opened Sep 18, 2026·

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• fix(core): support exceptions in fallback batches

  #11665·Zexu Jin (jackjin1997) opened Sep 17, 2026Contributor·

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• feat(langchain): expose tool metadata to HITL when and add interruptOn catch-all

  #11660·dolorsy opened Sep 17, 2026·

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• fix(core): run background callbacks in the caller's async context

  #11658·avivtabak opened Sep 17, 2026·

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• feat(openrouter): surface cost and cost_details in response_metadata

  #11656·Isaac Wong (fatwong) opened Sep 17, 2026·

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