What runtime dependencies does Demo MCP Basic require?
Node.js version 23.0 or higher and npm (bundled with Node.js). A Google AI API key (for Gemini) or a Vertex AI project ID is required.
@bertrandgressier
基本情報
Demo of MCP server with HTTP SSE and a client
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Demo MCP Basic demonstrates a fundamental client‑server interaction using the Model Context Protocol (MCP). The server provides simple calculation tools (addition, subtraction, etc.) and the client, using the AI SDK, connects a Google AI model (Gemini/Vertex AI) to those tools, enabling the AI to call external functionalities during text generation.
Clone the repository, install dependencies (npm install), and create a .env file with your Google AI API key or Vertex AI project ID. Build the project with npm run build, then start the server (npm run start:server) and the client (npm run start:client). Development modes are available via npm run dev:server and npm run dev:client.
Node.js version 23.0 or higher and npm (bundled with Node.js). A Google AI API key (for Gemini) or a Vertex AI project ID is required.
The client connects to the server via SSE (Server‑Sent Events) at `http://localhost:3001/sse`.
The server exposes simple calculation tools, specifically addition and subtraction (and potentially other basic arithmetic operations).
All configuration (API keys, project IDs) is stored locally in a `.env` file. No external databases are used; the server runs locally and communicates with Google’s AI services over HTTPS.
The server only offers basic arithmetic tools. The client is a demonstration script hard‑coded to evaluate `"6 + 12"` and relies on the AI model correctly invoking the tool. No authentication or secure transport beyond SSE is implemented.

Model Context Protocol Servers
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