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design-system

design-system is a skill for Claude Code, Codex from JansenAnalytics/claudex. It costs 26 tokens per session (391 once invoked), scanned A, original, MIT.

A toolkit for checking whether a project's interface follows consistent visual rules. It examines colors, fonts, spacing, layering values, components, and reusable style settings called design tokens.

In plain words
What is it for?
For extracting style tokens, auditing CSS or SCSS, listing React or Vue components, checking style drift, and building a component inventory.
Why use it?
It exposes small visual differences and duplicated styles that can make an application feel inconsistent or harder to maintain.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 scripts/token-extractor.py --dir src/.

not rated 5repo 4mo ago A scan 26 tokens original MIT

Good fit For extracting style tokens, auditing CSS or SCSS, listing React or Vue components, checking style drift, and building a component inventory.

Compare 6 skills from other repositories ↓
View source ↗ JansenAnalytics/claudex
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/JansenAnalytics/claudex
agentmods
npx agentmods add skills/jansenanalytics/claudex/design-system

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for design-system

README.md
[![agentmods](https://agentmods.dev/badge/skills/jansenanalytics/claudex/design-system/github.svg)](https://agentmods.dev/skills/jansenanalytics/claudex/design-system)
Your own site
<a href="https://agentmods.dev/skills/jansenanalytics/claudex/design-system"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/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.

agentmods 80×15 button for design-system

Your own site · 80×15
<a href="https://agentmods.dev/skills/jansenanalytics/claudex/design-system"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/design-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 391 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.00391
Opus 5.5 $0.00010 $0.00156
Sonnet 5.5 $0.00005 $0.00078
Haiku 4.5 $0.00003 $0.00039

Measured 2mo ago against content hash fb63f4292797, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 2mo 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.

skills/design-system/SKILL.md · 68 lines

What it actually says

design-system

Enforce design consistency: component inventory, style token extraction, CSS consistency checking, spacing/color/typography auditing.

When to Use

  • Auditing UI consistency across a project
  • Extracting design tokens from CSS/SCSS
  • Building component inventories
  • Checking for style drift or inconsistencies
  • Standardizing a design system

Scripts

token-extractor.py

Extract design tokens (colors, fonts, spacing) from CSS/SCSS files.

python3 scripts/token-extractor.py --dir src/
python3 scripts/token-extractor.py --dir styles/ --format json

Arguments:

  • --dir <path> — Directory to scan (default: .)
  • --format json|markdown — Output format (default: markdown)

style-auditor.sh

Audit CSS for consistency issues.

bash scripts/style-auditor.sh --dir src/

Arguments:

  • --dir <path> — Directory to scan (default: .)

Reports: unique colors, near-duplicate colors, font sizes, spacing values, z-index values, unit mixing.

component-inventory.sh

Build component inventory from React/Vue project.

bash scripts/component-inventory.sh --dir src/

Arguments:

  • --dir <path> — Directory to scan (default: .)

Reports: component name, file path, props, usage count, unused components, untested components.

References

  • design-tokens-guide.md — Design token concepts and naming conventions
Changes

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.

  1. 2mo ago First seen · 68 lines · 26 tokens per session scan A fb63f4292797

Subscribe to this mod's changes

design-system is a skill published in the GitHub repository JansenAnalytics/claudex (5 stars, last pushed 4mo ago), licensed MIT. It adds 26 tokens to every session and 391 once invoked, about $0.0001 per session on Opus 5.5. 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.

CSS and stylingDesign and UXFrontendcomponent-inventoryconsistencycssdesign-tokensstyle-audit
Related

design-system compared with skills from other repositories

design-system next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
design-systemJansenAnalytics/claudexSkill54mo agoMITA26Claude Code, Codex
designlang-tokensManavarya09/design-extractSkill4.8kyesterdayMITA30Claude Code
tinted-ui-tokens-skillstruman-t3/tinted-ui-tokens-skillsSkill22mo agoMITA181Claude Code, Codex
css-spacing-layoutLuuOW/meridian-mcpSkill024d agoMITA32Claude Code, Codex
popular-web-designsNousResearch/hermes-agentSkill261kyesterdayMITA23Claude Code, Codex
extract-designManavarya09/design-extractSkill4.8kyesterdayMITA140Claude Code
hero-slider-settleUnclecheng-li/AI_AnimationSkill1.7k11d agoMITA0Claude Code, Codex