How MCP works as standalone client/Server and with LLM

src ├── chat.ts # command line chat interface to Claude completion ├── client.ts # MCP client that starts MCP server with stdio transport ├── index.ts # Node run script to start MCP server or Chat CLI ├── llm.ts # Uses Anthropic SDK to talk to Claude API └── server.ts # MCP server that exposes tools and executes them

NPM # install with your package manager of choice (Recommend nix) # nix shell nixpkgs#nodejs ANTHROPIC_API_KEY='' # Put your key here in .env.local file