base on The official TypeScript SDK for Model Context Protocol servers and clients # MCP TypeScript SDK > [!IMPORTANT] > **This is the `main` branch which contains v2 of the SDK (currently in development, pre-alpha).** > > We anticipate a stable v2 release in Q1 2026. Until then, **v1.x remains the recommended version** for production use. v1.x will continue to receive bug fixes and security updates for at least 6 months after v2 ships to give people time to upgrade. > > For v1 documentation and code, see the [`v1.x` branch](https://github.com/modelcontextprotocol/typescript-sdk/tree/v1.x).    <details> <summary>Table of Contents</summary> - [Overview](#overview) - [Packages](#packages) - [Installation](#installation) - [Quick Start (runnable examples)](#quick-start-runnable-examples) - [Documentation](#documentation) - [Contributing](#contributing) - [License](#license) </details> ## Overview The Model Context Protocol (MCP) allows applications to provide context for LLMs in a standardized way, separating the concerns of providing context from the actual LLM interaction. This repository contains the TypeScript SDK implementation of the MCP specification and ships: - MCP **server** libraries (tools/resources/prompts, Streamable HTTP, stdio, auth helpers) - MCP **client** libraries (transports, high-level helpers, OAuth helpers) - Runnable **examples** (under [`examples/`](examples/)) ## Packages This monorepo publishes split packages: - **`@modelcontextprotocol/server`**: build MCP servers - **`@modelcontextprotocol/client`**: build MCP clients Both packages have a **required peer dependency** on `zod` for schema validation. The SDK internally imports from `zod/v4`, but remains compatible with projects using Zod v3.25+. ## Installation ### Server ```bash npm install @modelcontextprotocol/server zod ``` ### Client ```bash npm install @modelcontextprotocol/client zod ``` ## Quick Start (runnable examples) The runnable examples live under `examples/` and are kept in sync with the docs. 1. **Install dependencies** (from repo root): ```bash pnpm install ``` 2. **Run a Streamable HTTP example server**: ```bash pnpm --filter @modelcontextprotocol/examples-server exec tsx src/simpleStreamableHttp.ts ``` Alternatively, from within the example package: ```bash cd examples/server pnpm tsx src/simpleStreamableHttp.ts ``` 3. **Run the interactive client in another terminal**: ```bash pnpm --filter @modelcontextprotocol/examples-client exec tsx src/simpleStreamableHttp.ts ``` Alternatively, from within the example package: ```bash cd examples/client pnpm tsx src/simpleStreamableHttp.ts ``` Next steps: - Server examples index: [`examples/server/README.md`](examples/server/README.md) - Client examples index: [`examples/client/README.md`](examples/client/README.md) - Guided walkthroughs: [`docs/server.md`](docs/server.md) and [`docs/client.md`](docs/client.md) ## Documentation - Local SDK docs: - [docs/server.md](docs/server.md) – building MCP servers, transports, tools/resources/prompts, CORS, DNS rebinding, and deployment patterns. - [docs/client.md](docs/client.md) – using the high-level client, transports, backwards compatibility, and OAuth helpers. - [docs/capabilities.md](docs/capabilities.md) – sampling, elicitation (form and URL), and experimental task-based execution. - [docs/faq.md](docs/faq.md) – environment and troubleshooting FAQs (including Node.js Web Crypto support). - External references: - [Model Context Protocol documentation](https://modelcontextprotocol.io) - [MCP Specification](https://spec.modelcontextprotocol.io) - [Example Servers](https://github.com/modelcontextprotocol/servers) ## v1 (legacy) documentation and fixes If you are using the **v1** generation of the SDK, the **v1 documentation** (and any v1-specific fixes) live on the long-lived [`v1.x` branch](https://github.com/modelcontextprotocol/typescript-sdk/tree/v1.x). See: [`https://github.com/modelcontextprotocol/typescript-sdk/tree/v1.x`](https://github.com/modelcontextprotocol/typescript-sdk/tree/v1.x). ## Contributing Issues and pull requests are welcome on GitHub at <https://github.com/modelcontextprotocol/typescript-sdk>. ## License This project is licensed under the MIT License—see the [LICENSE](LICENSE) file for details. ", Assign "at most 3 tags" to the expected json: {"id":"12621","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"