Remote Authless

You deploy and run an MCP server that exposes your tools to clients, so you can execute your custom tools remotely, test them from playgrounds, or connect from local MCP clients. This setup lets you host the server on a Cloudflare Worker with an authless remote URL and connect via a local proxy or playground to run your tools securely and efficiently.

How to use

Connect to your MCP server from an MCP client or the Cloudflare AI Playground to start using your tools. You can access the server from a remote URL like https://remote-mcp-server-authless.<your-account>.workers.dev/sse, which you can paste into an MCP client as the endpoint. Use the Cloudflare AI Playground to experiment with your server’s tools without writing any client code. Simply enter your deployed MCP server URL in the Playground to begin using your tools directly.

How to install

Prerequisites you need before installing: Node.js and npm (or another supported runtime according to your target environment). Make sure you have access to run commands in a terminal with network access to install dependencies.

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

This command initializes a new MCP server project based on the remote authless Cloudflare template and prepares it for deployment.

## Additional sections

Configure how your server exposes tools by editing the server’s initialization. To add your own tools, implement each tool inside the init() method of src/index.ts using this.server.tool(...). This is where you define the capabilities your MCP server will offer to clients and play with different tool configurations during development.

Connect to Cloudflare AI Playground to test and use your MCP server from a remote client. Open https://playground.ai.cloudflare.com/ and paste your deployed MCP server URL (for example, https://remote-mcp-server-authless.<your-account>.workers.dev/sse). You can then run and fine-tune your tools directly from the playground.

You can also connect to your remote MCP server from local MCP clients by using the mcp-remote proxy. If you want to use Claude Desktop, follow the quickstart steps to update your client configuration with the server URL. The example below shows how to add your server under the mcpServers section in Claude Desktop, enabling you to access the calculator tool through a local proxy.