Hallmark – Anti-AI-Slop Design Skill for Claude Code, Cursor, and Codex

Together AI released Hallmark, an anti-AI-slop design skill for Claude Code, Cursor, and Codex that generates UI with twenty themes, four verbs, and 57 slop-test gates plus a pre-emit self-critique to avoid on-distribution defaults. The skill picks a macrostructure for each brief, dresses it in one of twenty themes, and can switch to a custom mode for creative intent that designs from scratch without a template. Hallmark is available under MIT license via npx skills add nutlope/hallmark.

A design skill for Claude Code, Cursor, and Codex that refuses to look AI-generated. Live demo → https://www.usehallmark.com · twenty themes · four verbs · press T to cycle. Made by Together AI. Hallmark picks a macrostructure for the brief, dresses it in one of twenty themes, runs fifty-seven slop-test gates plus a pre-emit self-critique, and refuses the on-distribution defaults every LLM was trained into. Two pages by Hallmark for two different briefs feel like different sites, not colour-swaps of the same template. | Verb | What it does | |---|---| default | Build new UI. Picks a macrostructure, applies the rule-set, runs the slop test before handing back. | hallmark audit <target | Score existing code against the anti-patterns. Punch list, no edits. | hallmark redesign <target | Throw out the structure, keep copy + IA + brand, rebuild with a different fingerprint. | hallmark study <screenshot | URL | Extract the DNA from a design you admire: macrostructure, type-pairing, colour anchor. Refuses pixel-clones and paid templates. Optionally emits a portable design.md for handoff to other AI tools. | Each generated from a different brief. The skill picks the theme, structure, and craft to fit each one, not from a template. Each page is self-contained HTML + CSS, stamped with its macrostructure in the CSS comment. Browse the full set at usehallmark.com https://www.usehallmark.com or under site/ tests/ /Nutlope/hallmark/blob/main/site/ tests . When a brief carries creative intent that no catalog theme fits, Hallmark switches to Custom and designs the page from scratch: a made-to-measure palette, type, and layout. Same 57 slop-test gates, no template underneath. The Cascadia NightjarSleeper-train ticket · Custom | The Mend AssemblyRepair-café broadsheet · Custom | It stays a quiet branch; vanilla briefs never see it. The protocol lives in custom-theme.md /Nutlope/hallmark/blob/main/skills/hallmark/references/custom-theme.md . npx skills add nutlope/hallmark Re-run any time to update. Or copy SKILL.md /Nutlope/hallmark/blob/main/skills/hallmark/SKILL.md + into: /Nutlope/hallmark/blob/main/skills/hallmark/references references/ Claude Code : ~/.claude/skills/hallmark/ Cursor : .cursor/rules/hallmark.mdc body of SKILL.md , no frontmatter Codex : ~/.codex/skills/hallmark/ personal or .codex/skills/hallmark/ project-scoped The rule-set lives in SKILL.md /Nutlope/hallmark/blob/main/skills/hallmark/SKILL.md and . Worked examples in /Nutlope/hallmark/blob/main/skills/hallmark/references references/ and /Nutlope/hallmark/blob/main/docs/recipes.md docs/recipes.md . /Nutlope/hallmark/blob/main/docs/study-examples.md docs/study-examples.md MIT. Use it, fork it, ship it.