Building a Remote MCP Server on Cloudflare (Without Auth)
@fergusrobertson
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 enables you to deploy a remote Model Context Protocol (MCP) server on Cloudflare Workers without requiring authentication. It is intended for developers who want a quick, auth‑free MCP server for experimentation or internal use.
How to use Building a Remote MCP Server on Cloudflare (Without Auth)?
Deploy it by clicking the “Deploy to Workers” button or via the command npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. After deployment, customize tools inside src/index.ts using this.server.tool(...) and connect MCP clients using the deployed URL.
Key features of Building a Remote MCP Server on Cloudflare (Without Auth)
- Deploy a remote MCP server on Cloudflare Workers.
- No authentication required for access.
- Easily customizable by adding tools in the
init()method. - Ready integration with Cloudflare AI Playground.
- Works with local clients via the
mcp-remoteproxy.
Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)
- Quickly deploy a remote MCP server for testing or prototyping.
- Connect MCP tools from Cloudflare AI Playground without auth.
- Use the server with Claude Desktop through a local proxy.
FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)
What is an MCP server and why would I deploy one on Cloudflare Workers?
An MCP server exposes tools over the Model Context Protocol. Deploying it on Cloudflare Workers allows remote access without managing your own infrastructure.
How do I customize my MCP server’s tools?
Define each tool inside the init() method of src/index.ts using this.server.tool(...).
How do I connect this server to Cloudflare AI Playground?
Go to https://playground.ai.cloudflare.com/, enter your deployed SSE URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse), and start using the tools.
How do I connect this server to Claude Desktop?
Use the npx mcp-remote proxy and configure Claude’s settings with the deployed SSE URL (or a localhost URL for testing). Restart Claude to enable the tools.
What dependencies or runtime are required?
The server runs on Cloudflare Workers; local development requires Node.js and npm for the Cloudflare CLI. The mcp-remote proxy requires Node.js to run locally.
Frequently asked questions
What is an MCP server and why would I deploy one on Cloudflare Workers?
An MCP server exposes tools over the Model Context Protocol. Deploying it on Cloudflare Workers allows remote access without managing your own infrastructure.
How do I customize my MCP server’s tools?
Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`.
How do I connect this server to Cloudflare AI Playground?
Go to https://playground.ai.cloudflare.com/, enter your deployed SSE URL (e.g., `remote-mcp-server-authless.<your-account>.workers.dev/sse`), and start using the tools.
How do I connect this server to Claude Desktop?
Use the `npx mcp-remote` proxy and configure Claude’s settings with the deployed SSE URL (or a localhost URL for testing). Restart Claude to enable the tools.
What dependencies or runtime are required?
The server runs on Cloudflare Workers; local development requires Node.js and npm for the Cloudflare CLI. The `mcp-remote` proxy requires Node.js to run locally.
Basic information
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