Building a Remote MCP Server on Cloudflare (Without Auth)

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

It deploys a remote Model Context Protocol (MCP) server on Cloudflare Workers that does not require authentication, using SSE transport. Intended for developers who want a publicly accessible MCP server without built-in auth.

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 to create a local project. Customize tools in src/index.ts within the init() method using this.server.tool(...). Connect from Cloudflare AI Playground by entering the deployed SSE URL, or from local clients (e.g., Claude Desktop) using the mcp-remote proxy.

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

• Deployable to Cloudflare Workers with a one-click button or CLI.
• No authentication required for remote access.
• Uses SSE transport (Server-Sent Events).
• Customizable tools defined in TypeScript.
• Connectable via Cloudflare AI Playground or local MCP clients.

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

• Hosting a remote MCP server for AI playgrounds without managing auth.
• Rapidly prototyping MCP tools and exposing them over the internet.
• Integrating with Claude Desktop via the mcp-remote proxy.
• Using as a starter template for Cloudflare‑based MCP servers.

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

What does this server do?

It creates a remote MCP server hosted on Cloudflare Workers that communicates over SSE and does not require authentication.

How do I deploy it?

Either click the "Deploy to Workers" button in the README, or run npm create cloudflare@latest with the cloudflare/ai/demos/remote-mcp-authless template.

How do I add custom tools?

In src/index.ts, inside the init() method, use this.server.tool(...) to define each tool. The README references Cloudflare’s documentation for tool details.

How can I connect to this MCP server?

From Cloudflare AI Playground (remote client) by entering the SSE URL, or from local clients like Claude Desktop by configuring an mcp-remote proxy pointing to the same URL.

What runtime or dependencies are required?

It runs on Cloudflare Workers. Setup requires Node.js and npm; the npm create cloudflare command installs the template. No authentication middleware is used.