MCP 도구 50개를 짜며 깨달은 것: 함수 호출은 비정상적으로 친밀한 관계였다

The rise of MCP signals a fundamental shift in interface design where natural language descriptions and 'affordance' become more critical than strict code signatures for LLM interaction. This transition moves from a developer-centric focus on granularity to an intent-based approach, requiring developers to trust LLMs as autonomous agents rather than simple function callers.