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 beel-collab/presets.dev --skill radix-ui-design-systemgit clone --depth 1 https://github.com/beel-collab/presets.devWrote 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/beel-collab/presets.dev/radix-ui-design-system)<a href="https://agentmods.dev/skills/beel-collab/presets.dev/radix-ui-design-system"><img src="https://agentmods.dev/badge/skills/beel-collab/presets.dev/radix-ui-design-system/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/beel-collab/presets.dev/radix-ui-design-system"><img src="https://agentmods.dev/badge/skills/beel-collab/presets.dev/radix-ui-design-system.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 | $0.00029 | $0.05268 |
| Opus 5 | $0.00015 | $0.02634 |
| Sonnet 5 | $0.00006 | $0.01054 |
| Haiku 4.5 | $0.00003 | $0.00527 |
Grade A, and why
radix-ui-design-system 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 5d 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.
This is a copy
97% identical to radix-ui-design-system — 11 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 855 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Radix UI Design System
Build production-ready, accessible design systems using Radix UI primitives with full customization control and zero style opinions.
Overview
Radix UI provides unstyled, accessible components (primitives) that you can customize to match any design system. This skill guides you through building scalable component libraries with Radix UI, focusing on accessibility-first design, theming architecture, and composable patterns.
Key Strengths:
- Headless by design: Full styling control without fighting defaults
- Accessibility built-in: WAI-ARIA compliant, keyboard navigation, screen reader support
- Composable primitives: Build complex components from simple building blocks
- Framework agnostic: Works with React, but styles work anywhere
When to Use This Skill
- Creating a custom design system from scratch
- Building accessible UI component libraries
- Implementing complex interactive components (Dialog, Dropdown, Tabs, etc.)
- Migrating from styled component libraries to unstyled primitives
- Setting up theming systems with CSS variables or Tailwind
- Need full control over component behavior and styling
- Building applications requiring WCAG 2.1 AA/AAA compliance
Do not use this skill when
- You need pre-styled components out of the box (use shadcn/ui, Mantine, etc.)
- Building simple static pages without interactivity
- The project doesn't use React 16.8+ (Radix requires hooks)
- You need components for frameworks other than React
Core Principles
1. Accessibility First
Every Radix primitive is built with accessibility as the foundation:
- Keyboard Navigation: Full keyboard support (Tab, Arrow keys, Enter, Escape)
- Screen Readers: Proper ARIA attributes and live regions
- Focus Management: Automatic focus trapping and restoration
- Disabled States: Proper handling of disabled and aria-disabled
Rule: Never override accessibility features. Enhance, don't replace.
2. Headless Architecture
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.
- 5d ago First seen · 855 lines · 29 tokens per session scan A a1848aff2adf
radix-ui-design-system is a skill published in the GitHub repository beel-collab/presets.dev (2 stars, last pushed 4mo ago), licensed MIT. It adds 29 tokens to every session and 5,268 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to radix-ui-design-system, differing in 11 lines, and is treated as a copy.
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