Show HN: Pristine – an agent skill that critiques and polishes web UI

Category: devtools

Tags: agent-skill, ui-design, code-review, design-critique, screenshot-capture

Score: 6.3/10 (Innovation: 6, Technical: 5, Documentation: 8, Utility: 6)

Pristine is an agent skill that critiques and polishes web UI by capturing real pages across light/dark and responsive breakpoints, scoring them through user personas, and optionally applying fixes. It packages structured design heuristics (11 dimensions, 16 lenses, pattern references) as SKILL.md instructions compatible with Claude Code, Codex, Copilot, Cursor, and other agents.

Target audience: frontend devs, full-stack devs, AI coding agent users

Repository: https://github.com/maddhruv/pristine · Astro · Apache-2.0 · 2 stars

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