Building a Remote MCP Server on Cloudflare (Without Auth)

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

This is a demo/template that lets you deploy a remote MCP server on Cloudflare Workers without requiring authentication. It provides a starting point for developers who want to expose MCP tools over SSE without managing user auth.

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

Deploy using the "Deploy to Workers" button (gets a public URL like remote-mcp-server-authless.<your-account>.workers.dev/sse) or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless locally. Customize tools by editing src/index.ts and adding tool definitions inside the init() method with this.server.tool(...). Connect from Cloudflare AI Playground by entering your SSE URL, or from Claude Desktop using the mcp-remote proxy tool and the provided JSON configuration.

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

• Deploys a remote MCP server to Cloudflare Workers
• Requires no authentication for MCP connections
• Customizable tools defined in TypeScript code
• Connects to Cloudflare AI Playground as a remote MCP client
• Connects to Claude Desktop via the mcp-remote proxy
• Uses SSE (Server-Sent Events) transport

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

• Quickly prototyping MCP-based tools without setting up authentication
• Experimenting with remote MCP servers on Cloudflare’s edge network
• Integrating custom tools with Cloudflare AI Playground for testing
• Exposing MCP tools to Claude Desktop or other MCP clients via a proxy

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

Does the server require authentication?

No, this MCP server is intentionally built without authentication.

How do I deploy the server?

Click the "Deploy to Workers" button or use the npm create cloudflare command with the provided template.

How do I add my own tools?

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

How do I connect from Cloudflare AI Playground?

Go to the AI Playground, enter your deployed MCP server’s SSE URL, and start using the tools directly.

How do I connect from Claude Desktop?

Install the mcp-remote npm package, then add a configuration entry with command: "npx", args including the remote SSE URL, and restart Claude Desktop.