langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- FilesystemFileSearchMiddleware returns Windows separators in virtual paths
- Filesystem Claude middleware rejects allowed nested paths on Windows
- Add SemanticTextSplitter with dual local/global similarity scoring
- `merge_configs` drops an explicit `recursion_limit=25`
- PIIMiddleware credit_card detector only matches 16-digit cards, missing Amex, Diners Club and 13-digit Visa
- PIIMiddleware does not detect email, IP or MAC addresses adjacent to non-ASCII text
- TodoListMiddleware: opt-in transition validation and `depends_on` for todo progress fidelity
- SandboxIntegrationTests.test_glob_with_directories contradicts deepagents's documented glob() contract (files only)
- ShellToolMiddleware: a command timeout silently resets the session and does not re-run startup_commands
- fix(langchain): filter unsupported model inputs
- Docs
- Python not yet supported