Typeui Fundamentals

Design-system-agnostic UI/UX + WCAG principles as a reasoning layer for design decisions

Tested · Works

Test report

Verdict
Tested · Works
Score
8.8/10
Tested
Jul 20, 2026
Environment
Claude Code 2.x (agent harness)

This skill is no longer available upstream. Our re-check on Aug 10, 2026 couldn't find it any more (SKILL.md not found in repo tree). The test below is what we measured on Jul 20, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Fetched the repo tree and the real skills/fundamentals/SKILL.md plus all 5 referenced module files (~4200 lines total of concrete design/UX/accessibility rules); grepped all files — no exfiltration, scripts, or hidden payloads ("token" = design tokens). The 5 relative module links resolve; note dangling cross-refs to sibling skills (skills/vertical/*, skills/design-system/*) that don't exist in this repo but aren't required. TRIGGER phrasings — SHOULD load: "design system doesn't specify spacing/contrast for this card", "should accessibility override our brand color if it fails contrast", "how do I decide typography scale and hierarchy"; should NOT: "fix this failing Jest test in my API controller", "what's our exact brand primary hex and button-radius token" (concrete values defer to the design-system skill). All 5 judged correctly.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

  • Installs cleanly 5/5
  • Triggers reliably 5/5
  • Output vs. baseline 8/10
  • Docs & honesty 4/5

What Typeui Fundamentals does

A pure-markdown skill giving an agent universal design principles — visual hierarchy, spacing, 30 UX laws, typography scale, and testable WCAG accessibility thresholds — to apply when the design system is silent. Triggers when making or validating design decisions not covered by concrete tokens, or resolving aesthetics-vs-accessibility conflicts.

How to install Typeui Fundamentals

Nothing to install: the source repository no longer has this skill. If the author brings it back, our daily re-check will pick it up and the command will reappear here.

Commands — how to trigger Typeui Fundamentals

  • /typeui-fundamentals Design-system-agnostic UI/UX + WCAG principles as a reasoning layer for design decisions

It also activates on plain-language prompts like these:

  • Check this layout against visual hierarchy principles
  • Resolve this conflict between aesthetics and accessibility
  • Review our typography against design fundamentals

Frequently asked questions

Is the Typeui Fundamentals skill free?
Yes. The skill itself is free from bergside/typeui. SkillProof publishes the install command and an independent test verdict at no cost.
Does Typeui Fundamentals work with Claude Code?
We tested it with Claude Code 2.x (agent harness) on Jul 20, 2026. Verdict: Tested · Works. Fetched the repo tree and the real skills/fundamentals/SKILL.md plus all 5 referenced module files (~4200 lines total of concrete design/UX/accessibility rules); grepped all files — no exfiltration, scripts, or hidden payloads ("token" = design tokens). The 5 relative module links resolve; note dangling cross-refs to sibling skills (skills/vertical/*, skills/design-system/*) that don't exist in this repo but aren't required. TRIGGER phrasings — SHOULD load: "design system doesn't specify spacing/contrast for this card", "should accessibility override our brand color if it fails contrast", "how do I decide typography scale and hierarchy"; should NOT: "fix this failing Jest test in my API controller", "what's our exact brand primary hex and button-radius token" (concrete values defer to the design-system skill). All 5 judged correctly.
What is the Typeui Fundamentals SkillProof Score?
8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install Typeui Fundamentals?
Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Typeui Fundamentals with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.