The Seven Deadly Sins of MCP: Design Sins

This part of the series focuses on the design sins: Gluttony, Pride, and Envy. They belong in this category because they shape the day-to-day quality of the system itself. Things like how much it carries, how clearly its contracts are exposed, and how easy it is for both humans and models to reason about what it can do. Many MCP systems do not fail first as security disasters. They fail because they become expensive, crowded, and hard to reason about. One tool returns far too much data. Another