langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- core: Message chunk addition drops 'name' and fallback 'id', breaking streaming multi-agent metadata and merge_message_runs
- PromptTemplate silently accepts empty f-string field `{}` then crashes with IndexError on format
- Langchain voice
- refactor(typesafe): match TypeSafe request input
- ntegration: memory transfer store for LangChain/LangMem export and import verified agent memory
- feat(typesafe): experimental classifier based TsToolSelectorMiddleware
- core: AIMessage(tool_calls=[]) still hydrates tool calls from additional_kwargs
- ChatOpenAI silently drops provider-specific extra fields on tool calls (breaks multi-turn tool calling against OpenAI-compatible endpoints)
- feat(typesafe): add `ModerationMiddleware` for input content moderation
- [Bug] Two langchain unit tests read pyproject.toml without a UTF-8 encoding and fail on Windows with a non-UTF-8 locale
- Docs
- Python not yet supported