Building a Remote MCP Server on Cloudflare (Without Auth)

What is Building a Remote MCP Server on Cloudflare (Without Auth)?

This example template lets you deploy a remote MCP server on Cloudflare Workers that does not require authentication. It is intended for developers who want to quickly set up a remote MCP server and connect it to clients such as the Cloudflare AI Playground or Claude Desktop.

How to use Building a Remote MCP Server on Cloudflare (Without Auth)?

Use the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless to create the project locally. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to it from the Cloudflare AI Playground by entering the deployed SSE URL, or from Claude Desktop using the mcp-remote proxy with an npx mcp-remote command.

Key features of Building a Remote MCP Server on Cloudflare (Without Auth)

• Deploys as a Cloudflare Worker with no auth required
• Uses SSE transport for remote MCP communication
• Custom tools defined via this.server.tool(...) in TypeScript
• One-click deploy via the Cloudflare Workers button
• Compatible with the Cloudflare AI Playground and Claude Desktop

Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)

• Rapidly prototyping remote MCP tools on Cloudflare’s edge network
• Connecting a remote MCP server to the Cloudflare AI Playground for interactive testing
• Using Claude Desktop with a remote MCP server via the mcp-remote proxy
• Learning how to build and deploy a remote MCP server without authentication

FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)

What does this template do?

It provides a starter MCP server that runs on Cloudflare Workers and communicates over SSE, with no authentication layer.

How do I deploy the MCP server?

Click the "Deploy to Workers" button in the README, or run the npm create cloudflare command with the provided template URL.

How can I add my own tools to the server?

Define each tool inside the init() method of src/index.ts using this.server.tool(...).

How do I connect to the server from the Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (e.g., remote-mcp-server-authless.<account>.workers.dev/sse), and start using your tools.

How do I connect Claude Desktop to this remote MCP server?

Use the mcp-remote proxy by adding an entry to your Claude Desktop configuration that runs npx mcp-remote <sse-url>.