Building a Remote MCP Server on Cloudflare (Without Auth)

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

An example MCP server that can be deployed to Cloudflare Workers without requiring authentication. It provides an SSE endpoint and allows developers to add custom tools. It is intended for anyone who wants a remote MCP server that is easy to deploy and connect to from clients such as Cloudflare AI Playground or Claude Desktop.

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

Deploy using the "Deploy to Workers" button or via the command npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to the server from Cloudflare AI Playground by entering the deployed URL (remote-mcp-server-authless.<your-account>.workers.dev/sse) or from Claude Desktop using the mcp-remote proxy in the mcpServers configuration.

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

• Deployable on Cloudflare Workers with one click or via CLI.
• No authentication required.
• SSE endpoint at /sse.
• Customizable tools defined in src/index.ts.
• Connectable from Cloudflare AI Playground and Claude Desktop.

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

• Deploy a remote MCP server for prototyping or testing without auth complexity.
• Integrate custom tools with Cloudflare AI Playground as a remote MCP client.
• Connect Claude Desktop to a remote MCP server using the mcp-remote proxy.

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

Does this MCP server require authentication?

No, the server is intentionally built without authentication.

How do I deploy the server?

Use the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless in your terminal.

How can I add my own tools?

Define each tool inside the init() method of src/index.ts using this.server.tool(...).

How do I connect from Claude Desktop?

Use the mcp-remote npm package as a proxy and configure the mcpServers in Claude Desktop's settings with the appropriate command and URL.

Where is the SSE endpoint located?

The SSE endpoint is at /sse on the deployed worker URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse).