Building a Remote MCP Server on Cloudflare (Without Auth)

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

Building a Remote MCP Server on Cloudflare (Without Auth) is a template for deploying a remote Model Context Protocol (MCP) server on Cloudflare Workers without requiring authentication. It integrates with Cloudflare’s AI Playground and local MCP clients like Claude Desktop, targeting developers who need a quick, authless remote MCP endpoint for testing or lightweight workflows.

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

Deploy via the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless in the CLI. Customize tools by editing src/index.ts and defining each tool inside the init() method using this.server.tool(...). After deployment, connect MCP clients using the SSE URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse). For Claude Desktop, configure the mcp-remote proxy in the client settings.

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

• Deploy remote MCP server without authentication.
• Runs on Cloudflare Workers globally.
• Custom tools via TypeScript this.server.tool().
• One-click deployment button.
• Compatible with Cloudflare AI Playground.
• Connects to Claude Desktop via mcp-remote proxy.

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

• Prototype a remote MCP server for quick experiments without auth overhead.
• Provide MCP tools to users of Cloudflare AI Playground.
• Expose custom tools to Claude Desktop through a remote proxy.
• Rapidly iterate on tool definitions using Cloudflare Workers’ free tier.

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

How do I deploy the 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 in your terminal.

How can I add custom tools?

Open src/index.ts and define each tool inside the init() method using this.server.tool(...). Follow the Cloudflare MCP tools documentation for specifics.

How do I connect to Cloudflare AI Playground?

Navigate to https://playground.ai.cloudflare.com/, enter your deployed SSE URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse), and your tools become available directly in the playground.

How do I connect to Claude Desktop?

Install the mcp-remote proxy package (npx mcp-remote) and add the following configuration to your Claude Desktop settings: "mcpServers": { "calculator": { "command": "npx", "args": ["mcp-remote", "http://localhost:8787/sse"] } }. Restart Claude to see the tools.

Does the server require any authentication?

No, this server is intentionally designed without authentication for easy testing and quick deployment.