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codebase-design

Shared vocabulary for designing deep modules

codebase-design is an agent skill from Matt Pocock's skills collection, listed on skills.sh. It gives a shared vocabulary for designing deep modules (a lot of behavior behind a small interface, at a clean seam, testable through that interface) and applies it when designing or restructuring code. A skill is a SKILL.md file of instructions (sometimes with scripts and reference notes) that an AI agent loads only when a task calls for it, so the agent knows the steps to follow and what to avoid. It is free and open source.