{
  "mcpServers": {
    "firebase": {
      "command": "npx",
      "args": ["-y", "firebase-tools@latest", "mcp"]
    },
    "mysql": {
      "command": "npx",
      "args": ["-y", "@bytebase/dbhub", "--transport", "stdio",
               "--dsn", "mysql://user:pass@127.0.0.1:3306/mydb"]
    },
    "lighthouse": {
      "command": "npx",
      "args": ["lighthouse-mcp"]
    }
  }
}

{
  "mcpServers": {
    "context7": {
      "serverUrl": "https://mcp.context7.com/mcp"
    },
    "mintlify": {
      "serverUrl": "https://docs.yourdomain.com/mcp"
    },
    "stitch": {
      "serverUrl": "https://stitch.googleapis.com/mcp",
      "headers": {
        "X-Goog-Api-Key": "YOUR_API_KEY"
      }
    }
  }
}

npm init -y
npm install @modelcontextprotocol/sdk zod

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

const server = new McpServer({
  name: "weather-server",
  version: "1.0.0",
});

// Define the tool
server.tool(
  "get_weather",
  "Get current weather for a city",
  { city: z.string().describe("City name") },
  async ({ city }) => {
    // Call a weather API
    const weather = await fetch(
      `https://api.weather.example.com/${city}`
    ).then((r) => r.json());

    return {
      content: [
        {
          type: "text",
          text: `Weather in ${city}: ${weather.temp}°C, ${weather.condition}`,
        },
      ],
    };
  }
);

// Run the server via stdio
const transport = new StdioServerTransport();
await server.connect(transport);

pip install mcp[cli] httpx

from mcp.server.fastmcp import FastMCP
import httpx

mcp = FastMCP("weather-server")

@mcp.tool()
async def get_weather(city: str) -> str:
    """Get current weather for a city."""
    async with httpx.AsyncClient() as client:
        response = await client.get(
            f"https://api.weather.example.com/{city}"
        )
        data = response.json()
        return f"Weather in {city}: {data['temp']}°C, {data['condition']}"

if __name__ == "__main__":
    mcp.run(transport="stdio")