Frontend & UI

Hallmark

Anti-slop design flow with 58 gates and forced structural variety.

What it is

A design skill for AI coding assistants with one default build flow and three verbs: audit, redesign, and study. It pushes for structural variety so two builds don’t share one page rhythm.

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 landing page, wants to redesign something, invokes Hallmark
From the upstream SKILL.md

Why it matters for design

  • Diversification rules force different macrostructures, navs, and footers across consecutive builds.
  • Locked tokens ban inline hex or font-family values that bypass the token block.
  • Every emit is verified at 320, 375, 414, and 768 pixel widths.

What it covers

  • How to use this skill
  • Disciplines that hold across every verb
  • When the brief is a component, not a page
  • Design flow (default)
  • Hallmark study
  • Output contract and scope

How to install

Hallmark

  1. Clone the repo.

    git clone https://github.com/Nutlope/hallmark
  2. Point Codex at the skill file.

    skills/hallmark/SKILL.md
  3. Then describe the UI you want. Codex follows the skill.

How to run it with Codex

  1. Let the pre-flight scan read existing fonts, palette, and motion libraries first.

  2. Answer the audience, use case, and tone gate, or say go ahead.

  3. Run hallmark audit on a page for a ranked punch list without edits.

Every plugin here is free, open source, and links to its real upstream source.

More on the codex-design list ↗

Next step

Design with Open Design, without the setup

Install this plugin yourself, or run a whole curated design layer around Codex with Open Design. Bring your own key, own your output.

Open Design Desktop

One design system. Every output unmistakably your brand

Inside the full Vibe Design Workspace, use the same brand rules across websites, slide decks, interactive prototypes, dashboards, images, and HTML video. Connect Codex, Claude Code, Cursor, and other coding agents already on your computer, then create locally for free.

  • Web, slides, prototypes, dashboards, images, and video
  • 140+ design systems, plus the full template and skill library
  • Connect local Codex and 21+ coding agents · Free to use
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