Building an MCP server — CCA-F Exam Prep

L2.14✨ 0

REAL STORY A developer at a whiteboard. On the board: a simple flow diagram. 'Client sends request' arrow to 'Server receives request' arrow to 'Server executes tool' arrow to 'Server returns result.' Below, a laptop with a terminal showing a working MCP server: 'MCP Server running on stdio. Tools registered: get_weather.' The developer is smiling. It's simple.

A developer at a whiteboard. On the board: a simple flow diagram. 'Client sends request' arrow to 'Server receives request' arrow to 'Server executes tool' arrow to 'Server returns result.' Below, a laptop with a terminal showing a working MCP server: 'MCP Server running on stdio. Tools registered: get_weather.' The developer is smiling. It's simple.

A developer built her first MCP server in 30 minutes. It had one tool: get_weather.

She'd spent two weeks reading MCP documentation, architecture diagrams, and protocol specs. Transport layers. JSON-RPC. Capability negotiation. It felt impossibly complicated.

Then she sat down and wrote it. Import the SDK. Create a server. Define a tool. Write the handler. Start the server. Done. The protocol complexity was handled by the SDK.