Sydney Runkle
7d4b42b572
Patch bump of `langchain` from 1.3.17 to 1.3.18 to prepare a release. Picks up the `PIIMiddleware` redaction fix (#39894): message content that is a list of content blocks was being flattened into the string `repr` of the list during redaction, and redacted messages were losing fields such as `additional_kwargs`. Standard three-file bump — `__version__`, `pyproject.toml`, and the `langchain` entry in `uv.lock`. Running `uv lock` locally also pulled in unrelated dependency drift (upstream specifier changes and environment-dependent marker lines), so that churn was reverted and only the version line kept, matching prior release PRs. --- *Written with the help of an AI agent (Claude Code).*
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.