langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- feat(anthropic,fireworks,openai): use LangSmith gateway keys
- feat(core): add shared gateway URL mapping
- feat(core): add gateway OAuth bearer authentication
- feat(langchain): expose provider package via `get_provider_package`
- fix(groq): make _combine_llm_outputs None-safe and non-mutating
- [FEATURE] Preserve reasoning / reasoning_content field in streaming ChatOpenAI chunks
- feat(middleware): AskQuestionMiddleware for structured HITL questions
- fix(langchain): bound Python file search fallback
- Related to #31887 (custom header pattern support)
- Bug: streaming tool call fires prematurely when first SSE chunk has empty args
- Docs
- Python not yet supported