Building a Remote MCP Server on Cloudflare (Without Auth)

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

This example allows you to deploy a remote MCP (Model Context Protocol) server that requires no authentication on Cloudflare Workers. It is intended for developers who want to quickly spin up a remote MCP server for testing, prototyping, or connecting to MCP clients like the Cloudflare AI Playground or Claude Desktop.

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

Deploy using the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. After deployment, customize the server by adding tools inside the init() method of src/index.ts using this.server.tool(...). The server URL will be remote-mcp-server-authless.<your-account>.workers.dev/sse.

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

• No authentication required for the MCP server
• Deployable with one click or command line
• Fully customizable tools via this.server.tool()
• Connects to Cloudflare AI Playground as a remote MCP client
• Compatible with local MCP clients via the mcp-remote proxy

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

• Rapidly testing MCP tools without setting up local infrastructure
• Integrating MCP tools with the Cloudflare AI Playground for interactive experimentation
• Connecting Claude Desktop to a remote MCP server using the mcp-remote proxy
• Providing a public, stateless MCP server for internal or demonstration purposes

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

How do I deploy this MCP server?

Click the “Deploy to Workers” button or run npm create cloudflare@latest with the provided template to create a local project and deploy it to Cloudflare Workers.

How do I add custom tools to the server?

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

How do I connect to the Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (remote-mcp-server-authless.<your-account>.workers.dev/sse), and you can use your tools directly from the playground.

How do I connect Claude Desktop to this MCP server?

Install the mcp-remote proxy (npx mcp-remote) and add a configuration entry in Claude Desktop’s developer settings that points to your MCP server’s SSE endpoint. Restart Claude to see the tools.