src/
├── core/                      # Core MCP functionality
│   ├── mcp/                  # MCP server implementation
│   │   ├── server.ts        # Server class
│   │   ├── stdio.ts         # StdioServerTransport
│   │   └── index.ts         # Barrel exports
│   ├── types/               # Core type definitions
│   │   └── mcp.ts          # MCP types
│   └── utils/               # Utility functions
│       ├── config.ts        # Configuration management
│       └── errors.ts        # Error handling
├── features/                 # Feature modules
│   └── instagram/           # Instagram feature
│       ├── types.ts         # Instagram types
│       ├── utils/           # Feature utilities
│       │   ├── media.ts     # Media handling
│       │   ├── post.ts      # Post processing
│       │   └── seo.ts       # SEO generation
│       └── instagram.service.ts # Instagram service
├── services/                 # Shared services
│   └── browser/             # Browser service
│       ├── types.ts         # Browser types
│       └── browser.service.ts # Browser service
├── index.ts                 # Entry point
└── server.ts                # Main server class

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "call_tool",
  "params": {
    "name": "get_instagram_posts",
    "arguments": {
      "username": "example",
      "limit": 10
    }
  }
}