Building a Remote MCP Server on Cloudflare (Without Auth)

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

This server is a template for deploying an MCP (Model Context Protocol) server on Cloudflare Workers without requiring authentication. It allows developers to define custom tools and connect to remote MCP clients like the Cloudflare AI Playground or Claude Desktop via a proxy.

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. Customize tools in src/index.ts inside the init() method using this.server.tool(...). Connect clients by providing the deployed SSE URL (e.g., remote-mcp-server-authless.<account>.workers.dev/sse). For Claude Desktop, use the mcp-remote proxy with npx mcp-remote <SSE-URL>.

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

• Deploy to Cloudflare Workers without authentication
• Add custom tools using this.server.tool(...) inside init()
• Connect directly to Cloudflare AI Playground as a remote client
• Access from local MCP clients via the mcp-remote proxy
• Server URL pattern: <name>.<account>.workers.dev/sse
• Quick start using a pre‑built Cloudflare template

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

• Deploying a remote MCP server for testing without auth barriers
• Using custom MCP tools from the Cloudflare AI Playground
• Integrating MCP tools with Claude Desktop through a remote proxy
• Prototyping and iterating on MCP tool definitions on Cloudflare Workers

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

Does this MCP server require authentication?

No, the server is explicitly designed to be deployed without any authentication.

How do I deploy this MCP server?

Use the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless in your terminal.

How can I add custom tools?

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

How do I connect Cloudflare AI Playground to this server?

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

How do I connect Claude Desktop to this server?

Use the mcp-remote npm package. In Claude Desktop settings, add a server with command npx and arguments mcp-remote <SSE-URL>. Restart Claude to see the tools.