jezweb/claude-skills is a collection of skills, commands, plugins, settings, instructions, and hooks that guide the Claude Code CLI through development tasks and produce outputs such as project scaffolds, assets, documents, or deployed services. It is for developers using Claude Code with technologies and services including Cloudflare, React, Tailwind, Shopify, and WordPress. The catalogue entries are the project's own Claude Code workflow components.
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 jezweb/claude-skills --skill design-systemgit clone --depth 1 https://github.com/jezweb/claude-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/jezweb/claude-skills/design-system)<a href="https://agentmods.dev/skills/jezweb/claude-skills/design-system"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/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/jezweb/claude-skills/design-system"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/design-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- 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 | $0.00095 | $0.02088 |
| Opus 5.5 | $0.00038 | $0.00835 |
| Sonnet 5.5 | $0.00019 | $0.00418 |
| Haiku 4.5 | $0.00010 | $0.00209 |
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 1mo 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 — 230 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design System Extractor
Analyse an existing website, HTML file, or screenshot and synthesise a semantic design system into a DESIGN.md file. The output is optimised for use with the design-loop skill and general page generation.
When to Use
- Starting a new project based on an existing site's visual language
- Documenting a site's design system that was never formally written down
- Preparing
.design/DESIGN.mdbefore running the design loop - Extracting brand guidelines from a client's existing website
- Creating consistency documentation for a multi-page project
- Extracting design tokens from a Google Stitch project
Workflow
Step 1: Identify the Source
Ask the user for one of:
| Source | Method |
|---|---|
| Live URL | Browse via Playwright CLI or scraper, screenshot + extract HTML |
| Local HTML file | Read the file directly |
| Screenshot image | Analyse visually (limited — no exact hex extraction) |
| Existing project | Scan site/public/ for HTML files to analyse |
| Stitch project | Use @google/stitch-sdk to fetch screen HTML + design theme |
Step 2: Extract Raw Design Data
From a Live URL
-
Browse the site using Playwright CLI:
playwright-cli -s=design open {url} playwright-cli -s=design screenshot --filename=.design/screenshots/source-desktop.png -
Extract the full HTML — either via scraper MCP or by reading the page source
-
Resize and screenshot mobile (375px):
playwright-cli -s=design resize 375 812 playwright-cli -s=design screenshot --filename=.design/screenshots/source-mobile.png -
Close the session:
playwright-cli -s=design close
From a Local HTML File
Read the file directly and extract design tokens from the source.
From a Screenshot Only
Analyse the image visually. Note: colour extraction will be approximate without HTML source. Flag this limitation in the output.
From a Google Stitch Project
If @google/stitch-sdk is installed and STITCH_API_KEY is set:
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.
- 1mo ago First seen · 230 lines · 95 tokens per session scan A d5583191747d
design-system is a skill published in the GitHub repository jezweb/claude-skills (1,075 stars, last pushed 16d ago), licensed MIT. It adds 95 tokens to every session and 2,088 once invoked, about $0.0004 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 2026-09-03.
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