Building a Remote MCP Server on Cloudflare (Without Auth)
@zw-byte
About Building a Remote MCP Server on Cloudflare (Without Auth)
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Config
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RepositoryTools
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Overview
What is Building a Remote MCP Server on Cloudflare (Without Auth)?
This example template lets you deploy a remote MCP server on Cloudflare Workers that does not require authentication. It is intended for developers who want to quickly set up a remote MCP server and connect it to clients such as the Cloudflare AI Playground or Claude Desktop.
How to use Building a Remote MCP Server on Cloudflare (Without Auth)?
Use the "Deploy to Workers" button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless to create the project locally. Customize tools inside the init() method of src/index.ts using this.server.tool(...). Connect to it from the Cloudflare AI Playground by entering the deployed SSE URL, or from Claude Desktop using the mcp-remote proxy with an npx mcp-remote command.
Key features of Building a Remote MCP Server on Cloudflare (Without Auth)
- Deploys as a Cloudflare Worker with no auth required
- Uses SSE transport for remote MCP communication
- Custom tools defined via
this.server.tool(...)in TypeScript - One-click deploy via the Cloudflare Workers button
- Compatible with the Cloudflare AI Playground and Claude Desktop
Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)
- Rapidly prototyping remote MCP tools on Cloudflare’s edge network
- Connecting a remote MCP server to the Cloudflare AI Playground for interactive testing
- Using Claude Desktop with a remote MCP server via the mcp-remote proxy
- Learning how to build and deploy a remote MCP server without authentication
FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)
What does this template do?
It provides a starter MCP server that runs on Cloudflare Workers and communicates over SSE, with no authentication layer.
How do I deploy the MCP server?
Click the "Deploy to Workers" button in the README, or run the npm create cloudflare command with the provided template URL.
How can I add my own tools to the server?
Define each tool inside the init() method of src/index.ts using this.server.tool(...).
How do I connect to the server from the 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 your tools.
How do I connect Claude Desktop to this remote MCP server?
Use the mcp-remote proxy by adding an entry to your Claude Desktop configuration that runs npx mcp-remote <sse-url>.
Frequently asked questions
What does this template do?
It provides a starter MCP server that runs on Cloudflare Workers and communicates over SSE, with no authentication layer.
How do I deploy the MCP server?
Click the "Deploy to Workers" button in the README, or run the `npm create cloudflare` command with the provided template URL.
How can I add my own tools to the server?
Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`.
How do I connect to the server from the 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 your tools.
How do I connect Claude Desktop to this remote MCP server?
Use the `mcp-remote` proxy by adding an entry to your Claude Desktop configuration that runs `npx mcp-remote <sse-url>`.
Basic information
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