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 joey-barbier/ClaudeCode-Plugin --skill horka-ds-extractorgit clone --depth 1 https://github.com/joey-barbier/ClaudeCode-PluginWrote 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/joey-barbier/claudecode-plugin/horka-ds-extractor)<a href="https://agentmods.dev/skills/joey-barbier/claudecode-plugin/horka-ds-extractor"><img src="https://agentmods.dev/badge/skills/joey-barbier/claudecode-plugin/horka-ds-extractor/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/joey-barbier/claudecode-plugin/horka-ds-extractor"><img src="https://agentmods.dev/badge/skills/joey-barbier/claudecode-plugin/horka-ds-extractor.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 | $0.00129 | $0.02128 |
| Opus 5 | $0.00064 | $0.01064 |
| Sonnet 5 | $0.00026 | $0.00426 |
| Haiku 4.5 | $0.00013 | $0.00213 |
Grade A, and why
horka-ds-extractor 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 10d 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 — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design System Extractor
Analyze a frontend codebase and generate comprehensive design system documentation in Markdown. The output must be precise enough for another AI or a designer to reproduce every visual detail without access to the source code.
Scope
Extracts and documents visual design patterns. Does NOT:
- Modify source code or styles
- Create Figma files or design tool assets
- Implement or refactor components
- Document business logic or API contracts
Phase 1: Detect Project Stack
Use Glob and Grep to identify the frontend framework and CSS approach:
- Package manager:
package.json,bun.lockb,yarn.lock,pnpm-lock.yaml - Framework: Vue/Nuxt (
nuxt.config,.vuefiles), React/Next (next.config,.tsx), Svelte (svelte.config), Angular (angular.json) - CSS approach:
- Tailwind:
tailwind.config.*,@themeblocks in CSS,@tailwinddirectives - CSS-in-JS:
styled-components,emotion,@stitches - Vanilla CSS/SASS:
*.scss,*.sass,*.csswith custom properties - CSS Modules:
*.module.css
- Tailwind:
- Component library: Shadcn (
components/ui/), custom DS (designSystem/,ds/), Material UI, Vuetify, Radix - Icon system: Material Icons, Lucide, Heroicons, FontAwesome, custom SVGs
Report detected stack before proceeding. If detection is ambiguous, use AskUserQuestion.
Phase 2: Extract Design Tokens
Read the theme/config files identified in Phase 1. Extract ALL of the following categories. For each token, document the exact value (hex, px, rem, oklch -- whatever the source uses).
2.1 Colors
Read Tailwind config, CSS custom properties, or theme files.
Extract and categorize:
- Primary/Secondary brand colors
- Semantic colors: success, warning, danger, info
- Neutral scale: grays, backgrounds, borders, text colors
- Surface colors: card backgrounds, page backgrounds, overlays
- Domain-specific palettes: status colors, platform colors, chart colors
- Dark mode overrides (if applicable)
What ships with it
2 files 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.
- 10d ago First seen · 233 lines · 129 tokens per session scan A de4151ba6e7b
horka-ds-extractor is a skill published in the GitHub repository joey-barbier/ClaudeCode-Plugin (22 stars, last pushed 2mo ago), licensed MIT. It adds 129 tokens to every session and 2,128 once invoked, about $0.0006 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.
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