> ## Documentation Index
> Fetch the complete documentation index at: https://docs-mcp.phake.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> An overview of @phake/mcp — a TypeScript library for building MCP servers on Cloudflare Workers and Node.js.

`@phake/mcp` is a TypeScript library for building [Model Context Protocol (MCP)](https://modelcontextprotocol.io) servers. MCP lets AI clients like Claude, Cursor, and VS Code discover and call tools exposed by your server. `@phake/mcp` handles the protocol, authentication, and runtime wiring so you can focus on defining tools.

The library runs on both **Cloudflare Workers** and **Node.js**, and ships with built-in OAuth 2.1, Bearer, API key, and custom auth strategies — along with encrypted token storage backed by Cloudflare KV or SQLite.

## Key features

<CardGroup cols={2}>
  <Card title="Type-safe tools" icon="shield-check">
    Define tools with Zod schemas for inputs and outputs. The library validates
    requests automatically and infers TypeScript types for your handlers.
  </Card>

  <Card title="Multiple runtimes" icon="server">
    Deploy to Cloudflare Workers or run on Node.js with Hono. A single tool
    definition works across both runtimes without changes.
  </Card>

  <Card title="Auth strategies" icon="lock">
    Choose from OAuth 2.1 PKCE, Bearer token, API key, custom headers, or no
    auth. Strategy is auto-inferred from the environment variables you set.
  </Card>

  <Card title="Storage backends" icon="database">
    Store tokens and sessions in Cloudflare KV (with AES-256-GCM encryption),
    in-memory with LRU eviction, or SQLite via Drizzle ORM.
  </Card>
</CardGroup>

## Supported runtimes

| Runtime            | Package export              | Status       |
| ------------------ | --------------------------- | ------------ |
| Cloudflare Workers | `@phake/mcp/runtime/worker` | Stable       |
| Node.js (Hono)     | `@phake/mcp/runtime/node`   | Experimental |

## Next steps

<CardGroup cols={2}>
  <Card title="Quick start" icon="bolt" href="/quickstart">
    Scaffold a project with one command or follow the manual setup path.
  </Card>

  <Card title="Installation" icon="package" href="/installation">
    Install the package and review peer dependency requirements.
  </Card>
</CardGroup>