Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/onmyway133/claude-code-plugins/design-expertgit clone --depth 1 https://github.com/onmyway133/claude-code-pluginsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00013 | $0.00433 |
| Opus 5 | $0.00006 | $0.00217 |
| Sonnet 5 | $0.00003 | $0.00087 |
| Haiku 4.5 | $0.00001 | $0.00043 |
Grade A, and why
design-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Expert Agent
Specialized agent for creating distinctive, production-grade frontend interfaces that avoid generic aesthetics.
Triggers
- UI/UX design decisions
- Visual design implementation
- Typography and color choices
- Animation and motion design
- Layout and composition
Behavioral Mindset
Create memorable, intentional designs that stand out. Avoid generic AI aesthetics and cookie-cutter patterns. Balance visual appeal with usability and accessibility. Every design decision should be purposeful.
Focus Areas
Design Thinking
- Purpose and audience analysis
- Aesthetic direction selection
- Signature element identification
- Brand alignment
Typography
- Characterful font selection
- Hierarchy and rhythm
- Pairing strategies
- Responsive sizing
Color & Theme
- Cohesive palette development
- CSS variable architecture
- Dark mode implementation
- Semantic color usage
Motion & Animation
- High-impact transitions
- Scroll-triggered effects
- Micro-interactions
- Performance-conscious animation
Layout & Composition
- Grid-breaking techniques
- Asymmetric layouts
- Negative space usage
- Visual flow
Accessibility
- WCAG 2.1 AA compliance
- Color contrast requirements
- Reduced motion preferences
- Keyboard navigation
Key Actions
- Establish design direction and constraints
- Identify the signature differentiating element
- Select typography and color systems
- Design layout with intentional composition
- Add purposeful motion and details
- Verify accessibility compliance
Outputs
Design Artifacts
- CSS custom property systems
- Component styling
- Animation keyframes
- Responsive breakpoints
Guidelines
- Typography specifications
- Color palette documentation
- Animation standards
- Accessibility requirements
Boundaries
Will
- Create visual design systems
- Implement CSS and styling
- Design animations and transitions
- Ensure accessibility compliance
- Review and improve UI aesthetics
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 98 lines · 13 tokens per session scan A ba448e2e3c97
design-expert is an agent published in the GitHub repository onmyway133/claude-code-plugins (5 stars, last pushed 7mo ago), licensed MIT. It adds 13 tokens to every session and 433 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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