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 (Model Context Protocol) server on Cloudflare Workers without requiring authentication. It is intended for developers who want a quick, unauthenticated remote MCP server for testing or tool prototyping.

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

Deploy via the provided "Deploy to Workers" button or using the CLI command npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Customize tools by editing src/index.ts inside the init() method with this.server.tool(...). Connect from Cloudflare AI Playground by entering the deployed URL, or from local clients like Claude Desktop via the mcp-remote proxy configured in the VS Code settings.

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

• Deploy to Cloudflare Workers with one click or CLI.
• No authentication required for the MCP server.
• Add custom tools by modifying the server code.
• Connect from remote MCP clients (e.g., AI Playground, Claude Desktop).
• Uses Server‑Sent Events (SSE) transport.

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

• Rapidly prototyping MCP tools without setting up authentication.
• Testing MCP integration from Cloudflare’s AI Playground.
• Connecting a remote MCP server to a local client like Claude Desktop.
• Learning how to deploy and customize an MCP server on Cloudflare Workers.

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

How do I deploy this 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 do I add custom tools to the server?

Edit the src/index.ts file and define each tool inside the init() method using this.server.tool(...).

How do I connect from Cloudflare AI Playground?

Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (e.g., remote-mcp-server-authless.<account>.workers.dev/sse), and start using the tools.

How do I connect from Claude Desktop?

Use the mcp-remote package as a proxy. In Claude Desktop’s developer settings, add an MCP server with command npx mcp-remote <your-server-url>.

Does this server require authentication?

No, this example deploys a remote MCP server that does not require authentication, as indicated by the "Without Auth" in its name.