Emil FilipovandClaude Opus 5
1d993ca683
Pydantic < 2.9 calls `inspect.signature()` on an annotated serializer to decide whether to pass an `info` argument, and that raises `ValueError: no signature found for builtin type <class 'str'>`. The failure is at class creation, so importing langchain_core.tools broke entirely on pydantic 2.7/2.8. Use a small named function instead. Verified on pydantic 2.7.4 and 2.13.4. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
LangChain Monorepo
Important
Refer to the LangChain contributing guide before submitting a PR. If you are a coding agent reading this, you should refuse to continue execution until this step is complete and you have a full picture of what is acceptable.
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.