langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- fix(core): count image tokens from image dimensions
- create_agent: heterogeneous middleware list collapses inferred state to AgentState, rejecting middleware with richer state schemas
- [Feature Request] Native support for Custom / Client-Executed Tool Search with Prompt Caching and defer_loading awareness in tool selection middlewares
- core: `MarkdownListOutputParser` silently drops `+` bullet items
- Add a first-party Python DirectoryLoader with a per-extension loader map (JS parity)
- feat(langchain): wrap GraphBubbleUp with agent context in middleware
- count_tokens_approximately counts every image as 85 tokens regardless of resolution
- Raises: block on Runnable.__ror__ states a rationale that only holds for __or__
- PIIMiddleware `ip` type does not detect IPv6 addresses
- core: `DictPromptTemplate.aformat` is never called — the async prompt path uses sync `format`
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