What problem does it solve? When building or debugging UI with the Base UI library, relying on memory or outdated snippets leads to incorrect props, broken accessibility, and custom workarounds for behavior the library already handles. This Skill directs the AI to Base UI's official documentation as the source of truth before writing or reviewing component code. ## Core Features & Use Cases - Documentation-first workflow: Starts from the Base UI llms.txt documentation index and opens the relevant component or handbook page before answering. - Version-aware verification: Confirms APIs against the project's installed Base UI version when version differences may matter. - Library-native implementations: Prefers documented props and behavior over custom state, event handlers, timers, or accessibility logic. - Use Case: While implementing a Base UI Dialog, the Skill checks the official docs for the correct controlled-state props instead of inventing custom open/close handling. ## Quick Start Ask the AI to implement or review a Base UI component using the official Base UI documentation as the reference.