Nutlope's 'hallmark' Hits 11.1K Stars as an Anti-AI-Slop Design Skill for Claude Code, Cursor, and Codex

GitHub·high signal

Hallmark is a design skill that ships 20 themes, 57 'slop-test' gates, and four verbs — build, audit, redesign, study — to stop coding agents from producing generic purple-gradient UI. It hit #2 on GitHub Trending on July 15, 2026 and reached ~11.1K stars by July 17. It is the first widely adopted artifact treating taste as an installable, gate-checked layer rather than a prompt suffix.