langchainjs-mcp-adapters

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Basic Information

This repository contains a small adapter library that provides a lightweight wrapper to allow Model Context Protocol (MCP) services to be used with LangChain.js. It was created to let developers integrate MCP-compliant context and memory services into LangChain.js applications without building custom integration code. The README indicates the project has been migrated into the LangChainJS monorepo and the original package is published on npm under the @langchain/mcp-adapters name. The repository is archived and read-only, and the top-level README directs users to the new location inside the LangChainJS monorepo for the current source and documentation. The code and badges in the README identify the project license as MIT and show it as a maintained adapter package before migration.

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Features
A concise set of features is documented in the README rather than detailed API examples. The primary feature is a lightweight wrapper that adapts MCP services for use with LangChain.js, enabling MCP-compliant context exchanges to plug into LangChain flows. The README highlights that the package is available on npm as @langchain/mcp-adapters and that the project is MIT licensed. The repository metadata notes the project has been migrated into the official LangChainJS monorepo, and the README functions mainly as a migration notice and pointer to the up-to-date location and documentation. The repository itself is archived and marked read-only.
Use Cases
The adapter simplifies the task of connecting Model Context Protocol services to LangChain.js projects by providing a ready integration layer, reducing the need for custom bridging code. It helps developers adopt MCP for standardized context management and memory handling within LangChain.js applications. By being published as an npm package, it offered an easy install path for JavaScript and TypeScript projects using LangChain.js. The migration into the LangChainJS monorepo centralizes maintenance and documentation, making future updates and community contributions easier to find. The README also documents the archive status so users know to consult the monorepo for the maintained implementation.

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