AI product Open source
Hallmark is an open-source design skill for Claude Code, Cursor, and Codex that applies anti-AI-slop rules to generated interfaces. It selects a macrostructure and one of twenty-one themes for a brief, applies its design rule set, runs fifty-seven anti-pattern gates and a pre-emit self-critique, and returns self-contained HTML and CSS. Its four operations build new UI, audit existing code without editing it, redesign an interface while retaining its copy, information architecture, and brand, or study a screenshot or URL to extract macrostructure, type pairing, and a color anchor; the study operation can also emit a portable design.md file. Custom briefs can receive a made-to-measure palette, typography, and layout rather than a catalog theme. Hallmark is made by Together AI and distributed under the MIT license.
1 use taken from transcripts — each links to the moment in the video.
An open-source design skill for Claude Code, Cursor, and Codex that applies anti-AI-slop rules to typography, color, layout, and motion. It can build, audit, redesign, or study designs and returns HTML and CSS after self-critique.
1 in the library.