Files
langchain/libs
Alexander Olsen 92ee772761 feat(langchain): add ProviderToolSearchMiddleware (#37969)
[Docs](https://github.com/langchain-ai/docs/pull/4355)

Adds `ProviderToolSearchMiddleware` to let agents defer selected tools
behind OpenAI/Anthropic provider-native tool search while preserving
existing `extras={"defer_loading": True}` behavior. The middleware
validates searchable tool names, injects the provider search tool only
when a tool is deferred, and rejects unsupported providers up front.

Made by [Open SWE](https://openswe.vercel.app)

---------

Co-authored-by: Alexander Olsen <13665641+aolsenjazz@users.noreply.github.com>
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
Co-authored-by: Mason Daugherty <github@mdrxy.com>
Co-authored-by: Mason Daugherty <mason@langchain.dev>
2026-06-10 14:03:28 -04:00
..

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

View all LangChain integrations packages

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.