What is Clerk MCP Server Template?
A production-ready template for building Model Context Protocol (MCP) servers that integrate Clerk authentication with Cloudflare Workers. It provides a complete OAuth 2.0 flow, Durable Objects for session state, and KV storage for temporary OAuth sessions. Designed for developers who want to connect their existing Clerk-authenticated applications to Claude AI through secure MCP tools.
How to use Clerk MCP Server Template?
Clone the repository, run npm install, configure environment variables (CLERK_SECRET_KEY, CLERK_PUBLISHABLE_KEY, APP_URL) in a .dev.vars file, create a KV namespace with Wrangler, update the namespace ID in wrangler.jsonc, and start the development server with npm run dev. Requires Node.js 22+, a Clerk account, a Cloudflare account with Workers enabled, and an existing application using Clerk for authentication.
Key features of Clerk MCP Server Template
- Complete OAuth 2.0 flow integrated with Clerk
- Serverless deployment on Cloudflare Workers
- Persistent session state via Durable Objects
- Temporary OAuth session storage in KV
- HMAC-signed state parameters for security
- Automatic token refresh and session cleanup
- Full TypeScript type safety and example tools
Use cases of Clerk MCP Server Template
- Give Claude AI authenticated access to user data in SaaS applications
- Enable Claude to query customer support systems with proper user context
- Provide Claude with authenticated access to your APIs for data analysis
- Create secure, user-specific workflow automations
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