How to Create a DevTools Agent Skill

Coding today is seen as both magical and flawed, with AI agents capable of creating varied outputs, though often lacking in efficiency and adherence to best practices. To bridge this context gap, agent skills have been developed to enhance agent expertise while preserving context. This process involves creating skills that are directories of expert knowledge, which can include executable code and resources, and is guided by eval-driven development due to AI's non-deterministic nature. The creation of these skills involves defining success criteria, building the skill with expert approaches, testing it against predefined tests, and structuring skills for progressive disclosure. The skill development process is iterative, involving testing, expansion, and refinement to ensure that agents provide opinionated and consistent guidance. The aim is to improve agent experience (AX), thereby enhancing the overall developer experience by equipping agents with the necessary expertise to assist developers effectively.