Authless

You can run a remote MCP server on Cloudflare Workers that exposes tools over HTTP SSE and connect to it from MCP clients. This setup lets you deploy and use your own MCP-enabled tooling without requiring authentication, while keeping your tooling accessible from playgrounds or local clients.

How to use

Use an MCP client to connect to your deployed remote MCP server. You can run tools directly from the client, or route them through a local proxy to access the remote server. For example, you can connect from the Cloudflare AI Playground or from Claude Desktop by pointing the client to the remote server’s SSE endpoint.

How to install

Prerequisites: ensure you have Node.js installed on your machine. You will also use npm to deploy and manage the MCP server.

Deploy a remote MCP server to Cloudflare Workers using the provided template. Run this command locally to scaffold a server named my-mcp-server.

npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless

Additional notes and examples

Connect to the remote MCP server from the Cloudflare AI Playground by entering your deployed server URL. This lets you access your MCP tools directly from the playground interface.

You can also connect Claude Desktop to your remote MCP server by configuring the MCP proxy. Use the following configuration in Claude Desktop Settings under Developer to enable access to the remote server.

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://localhost:8787/sse"  // or remote-mcp-server-authless.your-account.workers.dev/sse
      ]
    }
  }
}

Available tools

mcp-remote

A remote MCP client component that connects to a remote MCP server via HTTP SSE, enabling tooling access from local or cloud-based clients.