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2024-12-17

LangChain.js client for Model Context Protocol.

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mcp-langchain-ts-client

A LangChain.js client for Model Context Protocol.

This is a port of rectalogic/langchain-mcp to the JS/TS LangChain and MCP APIs.

Installation

npm install mcp-langchain-ts-client

Usage

const serverParams = {
  command: "npx",
  args: [
    "-y",
    "@modelcontextprotocol/server-everything"
  ]
}

// Initialize the toolkit
const toolkit = new MCPToolkit(serverParams);
await toolkit.initialize();

// Extract LangChain.js compatible tools
const tools = toolkit.tools;

// Use the tools
import { createReactAgent } from "@langchain/langgraph/prebuilt";
import { ChatAnthropic } from "@langchain/anthropic";

const llm = new ChatAnthropic({ model: 'claude-3-5-sonnet-20241022' });
const agent = createReactAgent({ llm, tools });

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    Reviews

    1 (1)
    Avatar
    user_zdRzl20C
    2025-04-15

    As a dedicated user of the MCP Server by Protagonistss, I highly recommend it for anyone looking for a reliable server solution. It's robust, efficient, and user-friendly, making server management a breeze. The support and regular updates from Protagonistss ensure that the server stays current with the latest technology trends. For more details, check out their official page: https://mcp.so/server/code-mcp-server/Protagonistss.