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 skills add PaulRBerg/agent-skills --skill frontend-designgit clone --depth 1 https://github.com/PaulRBerg/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/paulrberg/agent-skills/frontend-design)<a href="https://agentmods.dev/skills/paulrberg/agent-skills/frontend-design"><img src="https://agentmods.dev/badge/skills/paulrberg/agent-skills/frontend-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/paulrberg/agent-skills/frontend-design"><img src="https://agentmods.dev/badge/skills/paulrberg/agent-skills/frontend-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00048 | $0.01288 |
| Opus 5 | $0.00024 | $0.00644 |
| Sonnet 5 | $0.00010 | $0.00258 |
| Haiku 4.5 | $0.00005 | $0.00129 |
Grade A, and why
frontend-design 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 11d 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 — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Design
Create a working frontend with a clear, subject-specific point of view, then prove it in the rendered UI.
Contract
- For a critique, review, or design plan, inspect the relevant product and report the direction without editing files.
- For a build or redesign, make the requested in-scope changes and run local, non-destructive validation.
- Treat explicit user direction, supplied references, repository instructions, existing product behavior, and the local design system as authoritative. Fidelity requests override this skill's defaults.
- Preserve the stack and working behavior. Do not replace the framework or design system, add dependencies, invent features, or fetch or generate media unless the request requires it.
- Make the smallest defensible assumption when the subject, audience, or page job is missing. State it before building; ask only when the answer would materially change scope or identity.
Workflow
1. Read the product before drawing the page
Inspect the affected route or component, neighboring UI, tokens, typography, assets, dependencies, and repository validation commands. Identify:
- the concrete subject and audience;
- the screen's single primary job and content hierarchy;
- the existing visual language and interaction conventions;
- the required viewports, themes, states, and accessibility constraints.
Use real product content and supplied assets wherever possible. If copy is missing, write only what the user needs to understand the interface and act.
2. Set one art direction
Before coding, define a compact direction:
- Thesis: one sentence connecting the visual idea to the subject and screen job.
- System: role-based color tokens, explicit type roles and scale, spacing and density, and a layout principle.
- Signature: one memorable element drawn from the domain's objects, workflows, data shapes, environments, or language.
- Risk: one deliberate departure from the obvious solution, with a reason it serves this brief.
- Motion and copy: when motion helps, how the interface speaks, and where restraint matters.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 110 lines · 48 tokens per session scan A 5ba433170029
frontend-design is a skill published in the GitHub repository PaulRBerg/agent-skills (70 stars, last pushed today), licensed MIT. It adds 48 tokens to every session and 1,288 once invoked, about $0.0002 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 2026-08-30.
Other skills, from other repositories
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
frontend-visual-qa
Audits already-rendered web, landing-page, HTML deck/slide, browser tool/game, dashboard/admin, design-system, and desktop UIs using real-browser or native-app journeys, inspected screenshots, DOM geometry, responsive or projection viewports, and a bundled Playwright sweep. Use after UI implementation to find…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
animation-principles
Apply animation principles — easing, staging, follow-through — to one specific UI motion. Use when tuning how an animation feels. For product-wide duration and easing tokens use motion-system (design-systems); for a full interaction spec use micro-interaction-spec.
refactoring-ui
Audit and fix visual hierarchy, spacing, color, and depth in web UIs. Use when the user mentions "my UI looks off" (or amateur/unprofessional), "fix the design", "Tailwind styling", "color palette", "visual hierarchy", "design system", "spacing scale", or "component styling". Also trigger when building consistent…