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 (Model Context Protocol) server on Cloudflare Workers without requiring authentication. It is intended for developers who want to expose MCP tools over the internet quickly using a serverless platform.

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

Deploy the server either by clicking the "Deploy to Workers" button (which creates a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse) or by running npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. To add custom tools, edit src/index.ts inside the init() method using this.server.tool(...). Connect to the server from Cloudflare AI Playground by entering the deployed SSE URL, or from Claude Desktop by using the mcp-remote proxy configured in the Claude Desktop settings.

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

• Deployed on Cloudflare Workers with no authentication required.
• Customizable MCP tools defined in src/index.ts.
• SSE endpoint exposed at the deployed worker URL.
• Ready to connect with Cloudflare AI Playground as a remote MCP client.
• Works with local MCP clients via the mcp-remote proxy.
• One‑click deployment from the Cloudflare Workers dashboard.

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

• Expose MCP tools publicly on the internet without setting up auth.
• Integrate remote MCP tools into Cloudflare AI Playground for testing.
• Connect a remote MCP server to local desktop clients like Claude Desktop.
• Quickly prototype and deploy MCP tools using a serverless architecture.

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

What is the deployed URL format?

The server is deployed to a URL like remote-mcp-server-authless.<your-account>.workers.dev/sse.

How do I add custom tools?

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

How do I connect to Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (the SSE endpoint), and you can use the tools directly.

How do I connect Claude Desktop?

Use the mcp-remote proxy (install via npm) and add a configuration entry in Claude Desktop’s Settings > Developer > Edit Config with the SSE URL.

Does the server require any authentication?

No, this example deploys an MCP server without any authentication.