Hallmark Review 2026

Anti-AI-slop design skill for Claude Code, Cursor, and Codex — twenty themes, four verbs, and 57 slop-test gates that refuse to look AI-generated.

Hallmark is an open-source design skill for Claude Code, Cursor, and Codex — made by Together AI — that plugs into coding agents to eliminate the visual slop those tools produce by default. Instead of a template, it 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 generated for two different briefs come out feeling like different sites, not colour-swaps of the same shadcn dashboard.

The skill exposes four verbs. The default verb builds new UI: it picks the structure, applies the rule-set, and runs the slop test before handing back. `hallmark audit <target>` scores existing code against the anti-patterns and returns a punch list without edits. `hallmark redesign <target>` throws out the structure but keeps copy, information architecture, and brand — then rebuilds with a different fingerprint. `hallmark study <screenshot | URL>` extracts the design DNA of a page you admire (macrostructure, type-pairing, colour anchor) and can emit a portable `design.md` handoff for other AI tools. It refuses pixel-clones and paid templates.