Building a Remote MCP Server on Cloudflare (Without Auth)

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

This repository provides a template for deploying a remote MCP (Model Context Protocol) server on Cloudflare Workers that does not require authentication. It is designed for developers who want to quickly host MCP tools serverlessly and connect them to MCP clients like Cloudflare AI Playground or Claude Desktop.

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

Deploy the server using the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless in your terminal. Customize tools inside src/index.ts using this.server.tool(...). Connect to Cloudflare AI Playground by entering your deployed URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse), or connect to Claude Desktop via the mcp-remote proxy with a configuration file.

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

• Serverless deployment on Cloudflare Workers
• No authentication required
• Easily add custom MCP tools
• Direct integration with Cloudflare AI Playground
• Works with Claude Desktop via mcp-remote proxy
• Deploy with a single button or CLI command

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

• Quickly hosting MCP tools without managing servers
• Testing tools interactively in Cloudflare AI Playground
• Connecting custom MCP tools to Claude Desktop for local use

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

What does “without auth” mean?

The server does not require any authentication or API keys to be accessed. This makes setup simpler but means the endpoint is publicly accessible.

How do I deploy the server?

Click the “Deploy to Workers” button in the README, or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless from your command line.

How do I add my own tools?

Define each tool inside the init() method of src/index.ts using this.server.tool(...). Refer to Cloudflare’s MCP tools documentation for details.

How do I connect to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed server’s SSE URL, and you can use the tools directly from the playground.

How do I connect Claude Desktop to the server?

Install the mcp-remote npm package, then add a configuration entry in Claude Desktop’s settings (Settings > Developer > Edit Config) pointing to your deployed SSE URL (e.g., npx mcp-remote http://localhost:8787/sse).