espresso-ui

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction.

Use when adding a new component to the espresso-ui registry — creating definition, templates, CSS tokens, snapshot tests, and integrating into both test apps.

Use when verifying a newly built or modified espresso-ui component renders correctly in both test apps — covers starting dev servers, Playwright MCP browser checks, dark mode, and component-specific interaction tests.

UI/UX best practices for web interfaces. Use when reviewing animations, CSS, audio, typography, UX patterns, prefetching, or icon implementations. Covers 11 categories from animation principles to typography. Outputs file:line findings.