Building a Remote MCP Server on Cloudflare (Without Auth)

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

This example deploys a remote MCP server that requires no authentication on Cloudflare Workers, allowing users to expose custom tools over SSE.

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. Then customize tools inside src/index.ts using this.server.tool(...). Connect clients like Cloudflare AI Playground or Claude Desktop (via the mcp-remote proxy) using the deployed SSE URL.

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

• No authentication required for the remote MCP server.
• One-click deployment to Cloudflare Workers.
• Custom tools can be added by editing src/index.ts.
• Connects to Cloudflare AI Playground as a remote MCP client.
• Works with local MCP clients via the mcp-remote proxy.

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

• Expose custom MCP tools publicly without managing authentication.
• Prototype and test MCP tools quickly using Cloudflare Workers.
• Connect remote tools to Cloudflare AI Playground for interactive use.
• Integrate custom tools with Claude Desktop using a proxy.

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

What URL does the server get deployed to?

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

How do I add custom tools to the MCP server?

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

How can I connect to this server from Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed SSE URL, and start using the tools.

How do I connect this server to Claude Desktop?

Use the mcp-remote proxy: add a configuration entry in Claude Desktop’s MCP settings with command: "npx" and args including "mcp-remote" followed by the SSE URL.

Does this MCP server require authentication?

No, the deployment is explicitly built without authentication.