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rohan-tessl
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## Summary Hey @pbakaus 👋 I ran your skills through `tessl skill review` at work and found some targeted improvements. Here's the full before/after: | Skill | Before | After | Change | |-------|--------|-------|--------| | distill | 31% | 80% | +49% | | delight | 32% | 74% | +42% | | polish | 44% | 80% | +36% | | animate | 55% | 89% | +34% | | clarify | 49% | 83% | +34% | | critique | 51% | 85% | +34% | | normalize | 46% | 80% | +34% | | optimize | 49% | 83% | +34% | | adapt | 48% | 81% | +33% | | extract | 48% | 81% | +33% | | harden | 49% | 79% | +30% | | arrange | 51% | 76% | +25% | | bolder | 51% | 76% | +25% | | colorize | 48% | 72% | +24% | | overdrive | 48% | 70% | +22% | | typeset | 64% | 85% | +21% | | audit | 61% | 81% | +20% | | onboard | 56% | 75% | +19% | | quieter | 59% | 76% | +17% | | teach-impeccable | 68% | 80% | +12% | | frontend-design | 76% | 76% | +0% | **Note:** These skills are auto-generated from `source/skills/` via your build system, so the changes target the source files directly. The `dist/` outputs were regenerated with `bun run build`. <details> <summary>Changes made</summary> All changes are limited to the `description` field in each skill's YAML frontmatter (in `source/skills/*/SKILL.md`). No skill body content was modified. The consistent improvement across all skills was adding: - **"Use when..." clauses** with explicit trigger terms — the #1 issue flagged by the reviewer. Without these, agents have no clear signal for when to select a skill from a large library. - **Natural user keywords** — terms users would actually say (e.g., "too bold", "laggy", "spacing issues") rather than abstract descriptors. - **Specific concrete actions** — listing what the skill actually does rather than describing outcomes in vague terms. - **Quoted string format** — ensuring descriptions use standard YAML quoted strings. `frontend-design` was already well-scored and left unchanged. </details> ## Type of change - [x] New / updated skill reference ## Checklist - [x] Source files updated in `source/` - [x] `bun run build` ran successfully - [x] `bun test` passes - [ ] Tested with at least one provider (Cursor / Claude Code / Gemini CLI / Codex / Copilot / Kiro / OpenCode) - [ ] README / DEVELOP.md updated if needed --- Honest disclosure — I work at @tesslio where we build tooling around skills like these. Not a pitch - just saw room for improvement and wanted to contribute. Want to self-improve your skills? Just point your agent (Claude Code, Codex, etc.) at [this Tessl guide](https://docs.tessl.io/evaluate/optimize-a-skill-using-best-practices) and ask it to optimize your skill. Ping me - [@rohan-tessl](https://github.com/rohan-tessl) - if you hit any snags. Thanks in advance 🙏
Impeccable
The vocabulary you didn't know you needed. 1 skill, 20 commands, and curated anti-patterns for impeccable frontend design.
Quick start: Visit impeccable.style to download ready-to-use bundles.
Why Impeccable?
Anthropic created frontend-design, a skill that guides Claude toward better UI design. Impeccable builds on that foundation with deeper expertise and more control.
Every LLM learned from the same generic templates. Without guidance, you get the same predictable mistakes: Inter font, purple gradients, cards nested in cards, gray text on colored backgrounds.
Impeccable fights that bias with:
- An expanded skill with 7 domain-specific reference files (view source)
- 20 steering commands to audit, review, polish, distill, animate, and more
- Curated anti-patterns that explicitly tell the AI what NOT to do
What's Included
The Skill: frontend-design
A comprehensive design skill with 7 domain-specific references (view skill):
| Reference | Covers |
|---|---|
| typography | Type systems, font pairing, modular scales, OpenType |
| color-and-contrast | OKLCH, tinted neutrals, dark mode, accessibility |
| spatial-design | Spacing systems, grids, visual hierarchy |
| motion-design | Easing curves, staggering, reduced motion |
| interaction-design | Forms, focus states, loading patterns |
| responsive-design | Mobile-first, fluid design, container queries |
| ux-writing | Button labels, error messages, empty states |
20 Commands
| Command | What it does |
|---|---|
/teach-impeccable |
One-time setup: gather design context, save to config |
/audit |
Run technical quality checks (a11y, performance, responsive) |
/critique |
UX design review: hierarchy, clarity, emotional resonance |
/normalize |
Align with design system standards |
/polish |
Final pass before shipping |
/distill |
Strip to essence |
/clarify |
Improve unclear UX copy |
/optimize |
Performance improvements |
/harden |
Error handling, i18n, edge cases |
/animate |
Add purposeful motion |
/colorize |
Introduce strategic color |
/bolder |
Amplify boring designs |
/quieter |
Tone down overly bold designs |
/delight |
Add moments of joy |
/extract |
Pull into reusable components |
/adapt |
Adapt for different devices |
/onboard |
Design onboarding flows |
/typeset |
Fix font choices, hierarchy, sizing |
/arrange |
Fix layout, spacing, visual rhythm |
/overdrive |
Add technically extraordinary effects |
Anti-Patterns
The skill includes explicit guidance on what to avoid:
- Don't use overused fonts (Arial, Inter, system defaults)
- Don't use gray text on colored backgrounds
- Don't use pure black/gray (always tint)
- Don't wrap everything in cards or nest cards inside cards
- Don't use bounce/elastic easing (feels dated)
See It In Action
Visit impeccable.style to see before/after case studies of real projects transformed with Impeccable commands.
Installation
Option 1: Download from Website (Recommended)
Visit impeccable.style, download the ZIP for your tool, and extract to your project.
Option 2: Copy from Repository
Cursor:
cp -r dist/cursor/.cursor your-project/
Note: Cursor skills require setup:
- Switch to Nightly channel in Cursor Settings → Beta
- Enable Agent Skills in Cursor Settings → Rules
Claude Code:
# Project-specific
cp -r dist/claude-code/.claude your-project/
# Or global (applies to all projects)
cp -r dist/claude-code/.claude/* ~/.claude/
OpenCode:
cp -r dist/opencode/.opencode your-project/
Pi:
cp -r dist/pi/.pi your-project/
Gemini CLI:
cp -r dist/gemini/.gemini your-project/
Note: Gemini CLI skills require setup:
- Install preview version:
npm i -g @google/gemini-cli@preview- Run
/settingsand enable "Skills"- Run
/skills listto verify installation
Codex CLI:
cp -r dist/codex/.codex/* ~/.codex/
Usage
Once installed, use commands in your AI harness:
/audit # Find issues
/normalize # Fix inconsistencies
/polish # Final cleanup
/distill # Remove complexity
Most commands accept an optional argument to focus on a specific area:
/audit header
/polish checkout-form
Note: Codex CLI uses a different syntax: /prompts:audit, /prompts:polish, etc.
Supported Tools
Contributing
See DEVELOP.md for contributor guidelines and build instructions.
License
Apache 2.0. See LICENSE.
The frontend-design skill builds on Anthropic's original. See NOTICE.md for attribution.
Created by Paul Bakaus