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 server that does not require authentication on Cloudflare Workers. It is a template for developers who want to host MCP tools at a public SSE endpoint without any API key or login.

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

Deploy instantly via the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize your tools inside the init() method of src/index.ts using this.server.tool(...). Connect to it from the Cloudflare AI Playground or from local clients like Claude Desktop (using the mcp-remote proxy).

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

• Deploy a remote MCP server with zero authentication
• Runs on Cloudflare Workers using SSE transport
• Fully customizable tools defined in src/index.ts
• Deployable with a single button click or CLI command
• Works with Cloudflare AI Playground and local MCP clients

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

• Host MCP tools publicly without requiring user authentication
• Quickly prototype and test MCP tools from the Cloudflare AI Playground
• Connect Claude Desktop to remote MCP tools via the mcp-remote proxy
• Use as a starter template for building more complex remote MCP servers

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

What does this server do?

It is a starter template that deploys an MCP server on Cloudflare Workers without authentication, exposing tools over SSE.

How do I deploy it?

Use the "Deploy to Workers" button on GitHub, or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless locally.

How do I add custom tools?

Define each tool inside the init() method of src/index.ts using this.server.tool(...), following Cloudflare's MCP tools documentation.

How can I connect from the Cloudflare AI Playground?

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

How do I connect Claude Desktop to this server?

Install the mcp-remote npm package, then add an entry to Claude Desktop's config (mcpServers) that runs npx mcp-remote <your-sse-url>. Restart Claude to see the tools.