MCP TypeScript SDK

MCP TypeScript SDK

The MCP TypeScript SDK is the official reference implementation of the Model Context Protocol for Node.js and browser environments. Build MCP servers (tools, resources, prompts) and MCP clients with full type safety, Zod-powered schema validation, and transport adapters for stdio, HTTP SSE, and WebSocket.

Key Features

• Full protocol coverage: implement servers exposing tools, resources, and prompt templates; build clients that consume them
• Transport agnostic: stdio (for local process servers), HTTP+SSE (for network servers), and in-process for testing
• Zod integration: define tool input schemas with Zod; automatic JSON Schema generation and runtime validation
• TypeScript-first: complete type inference for tool inputs/outputs; no any required
• OAuth 2.1 support: built-in token management for authenticated remote MCP servers
• Streaming: server-sent events transport supports incremental resource and tool responses

Quick Start

npm install @modelcontextprotocol/sdk

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

const server = new McpServer({ name: "my-server", version: "1.0.0" });

server.tool("add", { a: z.number(), b: z.number() }, async ({ a, b }) => ({
  content: [{ type: "text", text: `${a + b}` }],
}));

await server.connect(new StdioServerTransport());

npx ai-supply add mcp-typescript-sdk

Curated mirror of the open-source MCP TypeScript SDK (Apache-2.0). Get it from the source.