Akshay Parkhi's Weblog

Beyond Tool Calling: A Practical Tour of Advanced MCP Concepts

If you’ve used MCP for a few weeks, you already know the basics: a server exposes tools, resources, and prompts, and a client (usually an LLM-driven agent) calls them. That mental model gets you surprisingly far. But it also flattens MCP into “just tool calling,” and you start to wonder what makes the protocol interesting compared to a plain JSON-RPC schema.