Building a Remote MCP Server on Cloudflare (Without Auth)

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

This is a template that lets you deploy a remote Model Context Protocol (MCP) server on Cloudflare Workers without requiring authentication. It is intended for developers who want to expose MCP tools over the internet without an auth layer, for example in prototyping or trusted-network scenarios.

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

Deploy by clicking the "Deploy to Workers" button or by running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. After deployment, the server is available at a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse. Customize tools by adding them inside the init() method of src/index.ts using this.server.tool(...). Connect to Cloudflare AI Playground (https://playground.ai.cloudflare.com/) by entering the SSE URL, or connect to Claude Desktop by using the mcp-remote proxy and configuring the mcpServers JSON in Claude’s settings.

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

• Deploy an MCP server without authentication on Cloudflare Workers.
• Customize tools directly in the source code.
• Connect to Cloudflare AI Playground as a remote MCP client.
• Connect to Claude Desktop using the mcp-remote proxy.
• One-click deployment via the Cloudflare Workers button.
• Local development with npm create cloudflare.

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

• Quickly prototyping an MCP server that needs to be accessible from remote clients.
• Integrating MCP tools with Cloudflare’s AI Playground for testing and experimentation.
• Using a remote MCP server with Claude Desktop without running a local server.
• Demonstrating or teaching MCP server concepts in a controlled environment.

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

What URL does the server get after deployment?

The server is deployed to a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse.

How do I deploy the server?

You can either click the “Deploy to Workers” button on the README or run the command npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless.

How do I add custom tools to the server?

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

How do I connect to Cloudflare AI Playground?

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

How do I connect Claude Desktop to this server?

Use the mcp-remote proxy. In Claude Desktop’s Settings > Developer > Edit Config, add a JSON entry with "command": "npx" and "args": ["mcp-remote", "<your-sse-url>"]. Restart Claude to see the tools.