Workers Rs

tinybeachthor2stars

Rust MCP server template for Cloudflare workers

1# Workers Rs

README.mdMCP server

Transport: stdio
Status: Local

Power your agent

Add this server

Install from the publisher. Not a PlugMCP endpoint.

Run on PlugMCP

Host a copy with our keys and logs.

No packaged release in the registry yet. Follow the repository README.

RepositoryPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Last checked: 2026-10-28

Stars: 2
Tools: —
Uptime: —

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

How do I install Workers Rs?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Workers Rs need an API key?

No required environment variable is listed on this record.

What transport does Workers Rs use?

Workers Rs runs locally over stdio.

When was Workers Rs last checked?

Last checked 2026-10-28. Rust MCP server template for Cloudflare workers

From the publisher

Documentation

workers-rs-mcp

An example MCP (Model Context Protocol) server written in Rust, running on Cloudflare Workers.

The server compiles to WebAssembly and runs on Cloudflare's edge infrastructure, handling MCP JSON-RPC requests over HTTP.

How it works

HTTP routing is handled by Axum via the workers-rs SDK. MCP protocol logic is handled by the mcpserver crate.

Endpoints

Method	Path	Description
GET	`/`	Server name and version
GET	`/healthz`	Health check — returns `OK`
POST	`/mcp`	MCP JSON-RPC endpoint

Session management

initialize requests generate a new mcp-session-id (UUID v4) returned in the response header
All subsequent requests should include the mcp-session-id header

Tools

Includes one example tool:

echo — echoes the input message back to the caller

Getting started

Prerequisites

Rust with the wasm32-unknown-unknown target:

rustup target add wasm32-unknown-unknown

Wrangler CLI:
```
npm install -g wrangler
```

Local development

wrangler dev

Deploy to Cloudflare Workers

wrangler deploy

Pushing to main also deploys automatically via GitHub Actions (requires CLOUDFLARE_API_TOKEN and CLOUDFLARE_ACCOUNT_ID secrets).

Adding tools

Implement the ToolHandler trait in src/lib.rs:

struct MyToolHandler;

#[async_trait]
impl ToolHandler for MyToolHandler {
    async fn call(&self, args: Value, _context: Value) -> Result<ToolResult, McpError> {
        // your logic here
        Ok(text_result("result".to_string()))
    }
}

mcp_router.handle_tool("my-tool", Arc::new(MyToolHandler));

Add the tool schema to mcp/tools.json.