Remote MCP Server on Cloudflare

What is Remote MCP Server on Cloudflare?

A starter that enables you to run an MCP (Model Context Protocol) server on Cloudflare Workers with OAuth-based login, allowing AI clients like Claude Desktop to invoke tools remotely over SSE.

How to use Remote MCP Server on Cloudflare?

Clone the repository, install dependencies with npm install, and run locally with npx nx dev remote-mcp-server. Deploy to Cloudflare using npm run deploy after creating an OAuth KV namespace with npx wrangler kv namespace create OAUTH_KV. Connect clients by pointing them to the /sse endpoint of your server.

Key features of Remote MCP Server on Cloudflare

• Runs on Cloudflare Workers for global edge deployment.
• Includes OAuth login flow out of the box.
• Uses SSE transport for real‑time communication.
• Supports local development with MCP Inspector.
• Compatible with Claude Desktop via the mcp-remote proxy.

Use cases of Remote MCP Server on Cloudflare

• Deploy an MCP server that AI assistants can call from anywhere.
• Provide authenticated tool access to Claude Desktop over the internet.
• Prototype and test MCP tools locally before production deployment.

FAQ from Remote MCP Server on Cloudflare

What is Remote MCP Server on Cloudflare and how does it differ from a local MCP server?

It is a remote MCP server hosted on Cloudflare Workers with OAuth login. Unlike a local server, it can be accessed from any client over the internet after authentication.

What runtime dependencies does it require?

You need Node.js and npm, along with the wrangler CLI for Cloudflare deployment. The server uses Cloudflare Workers and the OAuth KV namespace.

Where does authentication data live?

OAuth tokens are stored in a Cloudflare KV namespace (OAUTH_KV) that you create during setup.

What transport protocol does the server use?

The server exposes an SSE (Server‑Sent Events) endpoint at /sse. Clients connect by providing that URL.

How can I test the server locally before deploying?

Run the server locally with npx nx dev remote-mcp-server and connect using npx @modelcontextprotocol/inspector with the URL http://localhost:8787/sse. Use any email/password for the mock login screen.