Building a Remote MCP Server on Cloudflare (Without Auth)
@sxjeru
About Building a Remote MCP Server on Cloudflare (Without Auth)
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Basic information
Config
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Overview
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.
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