Design 4,614 installs

hallmark

by nutlope/hallmark

Anti-AI-slop design skill for greenfield pages, audits, redesigns, and design extraction from URLs or screenshots. Use when the user asks to build a new app or…

Skill content

Hallmark

A design skill for AI coding assistants. Makes the UIs they generate look made, not generated.

Hallmark is opinionated, short, and boring on purpose. It encodes a tight set of rules - drawn from the consensus of the anti-AI-slop design field (Anthropic's frontend-design skill, the Claude cookbook on frontend aesthetics, and the 2026 "tactile rebellion" movement) - and refuses to let the model fall back to the defaults every LLM was trained on.

The differentiator: Hallmark insists on structural variety, not just visual variety. Two pages by Hallmark for two different briefs should not share the same hero → 3-feature → CTA → footer rhythm. They should feel like different sites, not different colour-swaps of the same template. See references/structure.md.

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How to use this skill

Hallmark has one default behaviour and three explicit verbs.