# `@modelcontextprotocol/server`

The MCP (Model Context Protocol) TypeScript server SDK. Build MCP servers that expose tools, resources, and prompts.

> [!WARNING] **This is an alpha release.** Expect breaking changes until v2 stabilizes. We're publishing early to gather feedback — please try it and open issues — but we can't guarantee API stability yet. We'll aim to minimize disruption between alphas.

> [!NOTE] This is **v2** of the MCP TypeScript SDK. It replaces the monolithic `@modelcontextprotocol/sdk` package from v1. See the **[migration guide](https://github.com/modelcontextprotocol/typescript-sdk/blob/main/docs/migration.md)** if you're coming from v1.

## Install

```bash
npm install @modelcontextprotocol/server@alpha
```

Optional framework adapters: [`@modelcontextprotocol/express`](https://www.npmjs.com/package/@modelcontextprotocol/express), [`@modelcontextprotocol/hono`](https://www.npmjs.com/package/@modelcontextprotocol/hono),
[`@modelcontextprotocol/node`](https://www.npmjs.com/package/@modelcontextprotocol/node).

## Documentation

- **[Repository README](https://github.com/modelcontextprotocol/typescript-sdk#readme)** — overview, package layout, examples
- **[Server guide](https://github.com/modelcontextprotocol/typescript-sdk/blob/main/docs/server.md)**
- **[API reference](https://ts.sdk.modelcontextprotocol.io/v2/)**
- **[MCP specification](https://modelcontextprotocol.io)**