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 fernando-bertholdo/4-successful-AI-life --skill web-standardsgit clone --depth 1 https://github.com/fernando-bertholdo/4-successful-AI-lifeWrote 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/fernando-bertholdo/4-successful-ai-life/web-standards)<a href="https://agentmods.dev/skills/fernando-bertholdo/4-successful-ai-life/web-standards"><img src="https://agentmods.dev/badge/skills/fernando-bertholdo/4-successful-ai-life/web-standards/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/fernando-bertholdo/4-successful-ai-life/web-standards"><img src="https://agentmods.dev/badge/skills/fernando-bertholdo/4-successful-ai-life/web-standards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00043 | $0.08727 |
| Opus 5 | $0.00022 | $0.04364 |
| Sonnet 5 | $0.00009 | $0.01745 |
| Haiku 4.5 | $0.00004 | $0.00873 |
Grade A, and why
web-standards 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 — 1,196 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Web Standards
Overview
Comprehensive guidance for building accessible, performant, and user-friendly web interfaces aligned with Vercel's Web Interface Guidelines. Covers accessibility compliance (WCAG 2.1 AA), component patterns, form handling, animations, typography, navigation, and anti-patterns to avoid.
When to Use
- Reviewing HTML, React, Vue, Svelte components for accessibility and standards compliance
- Building forms, buttons, links, modals, navigation, lists, and interactive elements
- Optimizing performance via virtualization, lazy loading, and animation handling
- Implementing animations, transitions, or motion-sensitive designs
- Handling dark mode, i18n, localization, or theme-aware components
- Debugging focus states, keyboard navigation, or screen reader announcements
- Designing UX copy, error messages, loading states, or empty states
When NOT to Use
- Styling decisions unrelated to accessibility, performance, or UX patterns
- Branding or visual design guidelines (use design system skill instead)
- Backend logic or server-side rendering patterns (use architecture reviews)
- Non-web platforms (native mobile, desktop apps, terminal UIs)
Accessibility
Semantic HTML First
Use semantic elements; never <div onClick> for interactive content:
<button>for actions (submit, cancel, toggle, delete)<a>or<Link>for navigation (internal/external)<label>for form controls (inputs, checkboxes, radios, selects)<table>for tabular data (with<thead>,<tbody>, proper headers)<nav>,<main>,<header>,<footer>,<section>,<article>for structure
Anti-pattern:
<div onClick={handleClick} role="button">
Click me
</div>
Correct:
<button onClick={handleClick}>
Click me
</button>
ARIA Labels & Roles
- Icon-only buttons require
aria-label="..."describing intent - Form controls without visible labels require
aria-labeloraria-labelledby - Inputs with labels: use
<label htmlFor="id">(clickable target) oraria-label - Interactive elements: expose role via semantic HTML; use
role="..."only when semantic element unavailable - Decorative icons: apply
aria-hidden="true"to skip in accessibility tree - Dynamic content: async updates use
aria-live="polite"(toasts, validation messages, status updates) - Skip links: include skip-to-main link at top of page
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 · 1,196 lines · 43 tokens per session scan A f49abf87113f
web-standards is a skill published in the GitHub repository fernando-bertholdo/4-successful-AI-life (2 stars, last pushed yesterday), licensed MIT. It adds 43 tokens to every session and 8,727 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 2026-08-31.
Other skills, from other repositories
animation-patterns
SwiftUI animation patterns including springs, transitions, PhaseAnimator, KeyframeAnimator, SF Symbol effects, scroll-driven effects, mesh gradients, text renderers, and shader effects. Use when implementing, reviewing, or fixing animation or visual-effect code on iOS/macOS.
frontend-enhancer
This skill should be used when enhancing the visual design and aesthetics of web applications. It provides modern UI components, design patterns, color palettes, animations, and layout templates. REQUIRES ui-research skill first. Use this skill for tasks like improving styling, creating responsive designs…
generic-design-system
Complete design system reference for any project - colors, typography, spacing, components, animations. Adapts to project theme and tech stack. Use when implementing UI, choosing colors, creating animations, or ensuring brand consistency. For new design systems, use ui-research skill first.
static-page-stack
SOTA stack recommendations for elegant, controlled, semantic static HTML pages — dashboards, post-mortems, technical-investigation reports.
generic-react-design-system
Complete design system reference for React applications. Covers colors, typography, spacing, component patterns, glassmorphism effects, GPU-accelerated animations, and WCAG AA accessibility. Use when implementing UI, choosing colors, applying spacing, creating components, or ensuring brand consistency.
generic-static-design-system
Complete design system reference for static HTML/CSS/JS sites. Covers colors, typography, component patterns, animations, and accessibility. Use when implementing UI, choosing colors, or ensuring brand consistency.