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Matt Pocock introduces the concept of 'Leitwörter' (leading words) — repeated phrases in AI agent skill definitions that guide agent behavior by encoding desired approaches concisely, drawing on examples like 'zone of proximal development' to improve code quality and teaching outcomes.
This article discusses the concept of Skills in the AI agent ecosystem, arguing that Skills are more than prompts—they are packaged capabilities that externalize human expertise into reusable workflow units. The author shares design principles and case studies from building popular Skills.