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chore: enter alpha prerelease mode (#1823)

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Felix Weinberger 2026-03-31 17:03:33 +01:00 • committed by GitHub
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# `@modelcontextprotocol/client`
The MCP (Model Context Protocol) TypeScript client SDK. Build MCP clients that connect to MCP servers.
> [!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/client@alpha
```
## Documentation
- **[Repository README](https://github.com/modelcontextprotocol/typescript-sdk#readme)** — overview, package layout, examples
- **[Client guide](https://github.com/modelcontextprotocol/typescript-sdk/blob/main/docs/client.md)**
- **[API reference](https://ts.sdk.modelcontextprotocol.io/v2/)**
- **[MCP specification](https://modelcontextprotocol.io)**

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# `@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)**