Authless

You can run a remote MCP server that exposes custom tools you define, and connect to it from clients like the Cloudflare AI Playground or Claude Desktop. This gives you a flexible way to run your own MCP-powered helpers without building everything from scratch.

How to use

You use an MCP client to interact with the remote server. Start by deploying the server so it runs at a stable URL, then connect your client to that URL. From the client, you will access the tools you defined in the server and send prompts to execute those tools. You can run calculations, data processing, or other utilities you’ve exposed, all through the MCP interface.

How to install

Prerequisites: make sure you have Node.js and npm installed on your machine.

Install and create the remote MCP server using the official Cloudflare template. Run the following command in your terminal:

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

Additional steps you can take

Customize your MCP server by editing the initialization logic. Inside the server’s entry point, add your tools by calling the tool definition mechanism, which attaches new capabilities to the server.

Connect to Cloudflare AI Playground

You can connect your MCP server from the Cloudflare AI Playground, a remote MCP client. Steps:

1. Open the Cloudflare AI Playground.

2. Enter your deployed MCP server URL in the playground connection field.

3. Start using your MCP tools directly from the playground.

Connect Claude Desktop to your MCP server

You can also connect to your remote MCP server from Claude Desktop by using the mcp-remote proxy. Use the following configuration snippet in Claude Desktop to register your server under the calculator tool:

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

Available tools

calculator

Exposes a calculator tool via the remote MCP proxy. It connects to a proxy endpoint to execute calculations or data-processing tasks defined on the server.