AI Coding Tip: Write Skill Descriptions in Exactly Three Sentences for Better Agent Routing

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A developer best-practice guide published on DEV Community recommends structuring AI agent skill descriptions in exactly three sentences to improve discoverability and routing efficiency. The three sentences should cover: when the skill should be triggered, the specific situation that calls for it, and what the skill actually does. Overly long or vague descriptions force AI agents to burn valuable context budget scanning and comparing candidates, increasing the chance of selecting the wrong skill. Skills named after the moment a user reaches for them, rather than their general topic, are more reliably found by agents without manual guidance. The guide also notes that a description that cannot be compressed to three sentences often signals the skill itself is too broad and should be split into two separate skills.

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