Hallmark

Description

Hallmark is an opinionated design skill for AI coding assistants. It encodes a tight set of rules drawn from the anti-AI-slop design field and refuses to let the model fall back to the defaults every LLM was trained on. Its differentiator is structural variety, not just visual variety: two pages built from two different briefs should not share the same hero → 3-feature → CTA → footer rhythm. One default behaviour and three verbs — audit (score a target against the anti-pattern list, no edits), redesign (new visual structure inside the existing implementation boundaries), and study (extract the DNA from a screenshot or URL). Ships 21 named themes plus a custom OKLCH palette branch, a 50+ gate slop test, and a pre-emit self-critique that scores every output on six axes before handing it back. Redistribution of the MIT-licensed upstream project. See NOTICE.md and LICENSE.