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MCP BMI Server Template

by Lufeezhang
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Python
Remote

MCP BMI Server Template (FastAPI + SSE)

A minimal Model Context Protocol (MCP) server exposing a single tool: bmiCalculator.

  • Discovery endpoint (SSE): GET /mcp

  • Invocation endpoint: POST /invoke

  • Health check: GET /healthz

Quick Start (local)

pip install -r requirements.txt
export API_KEY=changeme   # optional
uvicorn main:app --host 0.0.0.0 --port 10000

Test:

# Discover tools (SSE)
curl -N -H "Accept: text/event-stream" -H "x-api-key: changeme" http://localhost:10000/mcp

# Invoke tool
curl -X POST http://localhost:10000/invoke \
  -H "Content-Type: application/json" \
  -H "x-api-key: changeme" \
  -d '{"tool":"bmiCalculator","params":{"weight":70,"height":175,"unit":"cm"}}'

Related MCP server: MCP Server Template

Docker

docker build -t mcp-bmi .
docker run -p 10000:10000 -e API_KEY=changeme mcp-bmi

Deploy to Render (example)

  • Create a new Web Service from this repo

  • Set environment variable API_KEY (optional but recommended)

  • The service will start with the Dockerfile

Your base URL will look like:

https://<your-service>.onrender.com

Use the MCP SSE endpoint:

https://<your-service>.onrender.com/mcp

MCP Host config example

{
  "mcpServers": {
    "bmiAgent": {
      "url": "https://<your-service>.onrender.com/mcp",
      "headers": {
        "x-api-key": "changeme"
      }
    }
  }
}

Project structure

.
├── main.py
├── requirements.txt
├── Dockerfile
├── .gitignore
└── README.md

Notes

  • SSE (text/event-stream) is used for discovery. If your host requires WebSocket, add a /ws endpoint.

  • Extend by adding more tools in MCPHello.tools and dispatching in /invoke.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityInactive
ResponsivenessNo issues

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