Complete Guide to Setting Up MCP Servers for Claude Desktop

{
  "mcpServers": {
    "github": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-github"],
      "env": {
        "GITHUB_TOKEN": "${GITHUB_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "project1-fs": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/projects/project1"]
    },
    "project2-fs": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/projects/project2"]
    }
  }
}

import { Server } from '@modelcontextprotocol/sdk';

const server = new Server({
  name: 'my-custom-server',
  version: '1.0.0'
});

server.setRequestHandler('tools/list', async () => {
  return {
    tools: [{
      name: 'my_tool',
      description: 'Custom tool description',
      inputSchema: {
        type: 'object',
        properties: {
          query: { type: 'string' }
        }
      }
    }]
  };
});

server.connect(process.stdin, process.stdout);