Building a Remote MCP Server on Cloudflare (Without Auth)

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

This example lets you deploy a remote MCP server on Cloudflare Workers without authentication. It is intended for developers who want a simple, publicly accessible MCP endpoint.

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

Deploy by clicking the "Deploy to Workers" button or running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. After deployment, customize tools in src/index.ts using this.server.tool(...). Connect to clients like the Cloudflare AI Playground or Claude Desktop (via the mcp-remote proxy).

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

• Deployed as a Cloudflare Worker with no authentication required.
• Uses Server-Sent Events (SSE) for transport.
• Customizable tools defined in the init() method.
• One‑click deploy via the Cloudflare Workers button.
• Directly connectable from the Cloudflare AI Playground.
• Compatible with Claude Desktop via the mcp-remote proxy.

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

• Expose MCP tools remotely without managing authentication.
• Test and interact with MCP tools from the Cloudflare AI Playground.
• Connect remote MCP tools to local clients like Claude Desktop using a proxy.
• Quickly prototype an MCP server using a Cloudflare Workers template.

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

How do I deploy this MCP server?

Click 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 to the Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server 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 remote MCP server?

Use the mcp-remote proxy. In the Claude Desktop configuration (Settings > Developer > Edit Config), add an entry with command npx, args ["mcp-remote", "<your-server-url>/sse"].

What transport and authentication does this server use?

It uses SSE (Server‑Sent Events) as the transport. The server is explicitly deployed without authentication.