Building a Remote MCP Server on Cloudflare (Without Auth)
@StevenConnors
About Building a Remote MCP Server on Cloudflare (Without Auth)
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Config
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Overview
What is Building a Remote MCP Server on Cloudflare (Without Auth)?
This example allows you to deploy a remote MCP server that doesn’t require authentication on Cloudflare Workers. It is intended for developers who want to host MCP tools on a remote server accessible via SSE, without a full authentication system.
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. Add custom tools in src/index.ts using this.server.tool(...). Connect clients such as Cloudflare AI Playground or Claude Desktop (via the mcp-remote proxy) to the deployed SSE URL.
Key features of Building a Remote MCP Server on Cloudflare (Without Auth)
- No authentication required for the MCP server
- Deploy quickly on Cloudflare Workers
- Uses SSE (Server‑Sent Events) transport
- Easily add custom tools in
src/index.ts - Integrates with Cloudflare AI Playground and Claude Desktop
Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)
- Host a remote MCP server for the Cloudflare AI Playground
- Connect Claude Desktop to a remote MCP server via the mcp-remote proxy
- Create a public MCP server without building a full authentication system
FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)
How do I deploy the MCP server?
Use the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless.
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 from Cloudflare AI Playground?
Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse).
How do I connect from Claude Desktop?
Use the mcp-remote proxy and configure Claude Desktop’s mcpServers setting with the command npx mcp-remote <server-url>.
What transport does the server use?
The server exposes an SSE endpoint at /sse.
Frequently asked questions
How do I deploy the MCP server?
Use the “Deploy to Workers” button or run `npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless`.
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 from Cloudflare AI Playground?
Go to https://playground.ai.cloudflare.com/, enter your deployed MCP server URL (e.g., `remote-mcp-server-authless.<your-account>.workers.dev/sse`).
How do I connect from Claude Desktop?
Use the mcp-remote proxy and configure Claude Desktop’s `mcpServers` setting with the command `npx mcp-remote <server-url>`.
What transport does the server use?
The server exposes an SSE endpoint at `/sse`.
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