LangChain

npm install @mcp-ts/sdk @langchain/core zod

import { MultiSessionClient } from '@mcp-ts/sdk/server';
import { LangChainAdapter } from '@mcp-ts/sdk/adapters/langchain';

const client = new MultiSessionClient('user_123');
await client.connect();

const adapter = new LangChainAdapter(client);
const tools = await adapter.getTools();

// Use with LangChain agent
const agent = createReactAgent({
  llm,
  tools,
  // ...
});

const adapter = new LangChainAdapter(client, {
  simplifyErrors: true  // Returns error.message instead of full error object
});