Building a Remote MCP Server on Cloudflare (Without Auth)

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

A template and guide for deploying a remote MCP (Model Context Protocol) server on Cloudflare Workers that does not require authentication. It uses SSE transport and is intended for developers who need a quick, publicly accessible MCP endpoint without auth.

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

Deploy via the "Deploy to Workers" button or by running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize tools by adding this.server.tool(...) calls inside the init() method of src/index.ts. Connect using the deployed URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse) from clients like Cloudflare AI Playground or Claude Desktop (via the mcp-remote proxy).

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

• Deploys to Cloudflare Workers without authentication
• Uses SSE (Server-Sent Events) transport
• Supports easy tool addition via this.server.tool()
• Connects to Cloudflare AI Playground natively
• Compatible with Claude Desktop through mcp-remote proxy
• One-click deploy from GitHub template

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

• Exposing MCP tools publicly without authentication overhead
• Quick prototyping and testing of MCP tool integrations
• Connecting remote MCP tools to the Cloudflare AI Playground
• Using MCP tools from local clients like Claude Desktop via a proxy

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

Does this server require authentication?

No, this MCP server is explicitly designed to be deployed without authentication.

How do I deploy this MCP server to Cloudflare?

Use 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 the command line.

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 can I connect Claude Desktop to this remote MCP server?

Use the mcp-remote proxy (npm package mcp-remote) and configure Claude Desktop with the server's SSE URL in the MCP settings JSON.

Where does the server run, and what is its URL format?

It runs on Cloudflare Workers and is reachable at remote-mcp-server-authless.<your-account>.workers.dev/sse.