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 renky1025/agent-skills --skill design-md-extractorgit clone --depth 1 https://github.com/renky1025/agent-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/renky1025/agent-skills/design-md-extractor)<a href="https://agentmods.dev/skills/renky1025/agent-skills/design-md-extractor"><img src="https://agentmods.dev/badge/skills/renky1025/agent-skills/design-md-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/renky1025/agent-skills/design-md-extractor"><img src="https://agentmods.dev/badge/skills/renky1025/agent-skills/design-md-extractor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 8 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 11 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 20 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 63 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 171 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 189 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 192 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 196 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 198 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00193 | $0.01702 |
| Opus 5.5 | $0.00077 | $0.00681 |
| Sonnet 5.5 | $0.00039 | $0.00340 |
| Haiku 4.5 | $0.00019 | $0.00170 |
Grade A, and why
design-md-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 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 — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design MD Extractor
Purpose
Turn a website URL into a DESIGN.md design-system document that conforms to the
google-labs-code/design.md specification: YAML
front-matter tokens plus design-critique prose. The value is spec conformance and honesty about
observed values — the file must pass npx @google/design.md lint, and it must never contain invented
tokens.
When to Use
- The user gives a URL and asks for a
DESIGN.md, design system, or design tokens. - The user asks to analyse a brand's or site's visual style into a reusable document.
- Trigger phrases: "create a DESIGN.md for [url]", "extract design system from [url]", "generate design tokens for [url]", "analyze [brand]'s visual style", "帮我分析 [url] 的设计系统", "为 [网站] 生成 DESIGN.md", "提取设计 token".
- Expected outputs: full design system (
DESIGN.md for [url]), tokens plus summary (extract design tokens from [url]), orDESIGN.mdplus inline analysis (analyze [url]'s visual style).
When NOT to Use
- The user wants generated images or visual assets rather than a specification document -> hand off
to
image-designorspec-image. - The user wants to restyle an existing implementation. This skill documents what exists; it does not change code or CSS.
- The target is behind authentication and no public marketing page is available. Analyse public pages only; do not attempt to access gated areas.
Workflow
- Gather visual data. Access the URL. Screenshot hero, nav, CTAs, cards, typography sections,
and footer. Inspect DevTools for CSS variables,
@font-face, computed styles,box-shadow,border-radius, and spacing. Screenshots capture decorative elements (gradients, glows, illustrations) that CSS inspection alone misses. - Extract design tokens. Map observed values into the YAML front-matter schema. Follow
references/token-extraction.mdfor colour counts, typography semantic names, spacing base-unit detection, radius mapping, and shadow capture. - Document components. For each distinct component, record its properties, and record each
observed state as its own entry (
button-primary,button-primary-hover). Valid component properties are listed inreferences/design-md-spec.md. - Write the section prose. Produce the eight
##sections in spec order, followingreferences/writing-guidelines.md. The Overview must read as design critique, not a feature list. - Validate. Run
npx @google/design.md lint DESIGN.md. Fix every error — broken refs, duplicate sections, invalid tokens — before finishing.
What ships with it
4 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.
- 1mo ago Changed · -104 lines · +33 tokens per session 2421222fc3f4
- 2mo ago First seen · 236 lines · 160 tokens per session scan A f7e01370c6e6
design-md-extractor is a skill published in the GitHub repository renky1025/agent-skills (11 stars, last pushed 28d ago), licensed MIT. It adds 193 tokens to every session and 1,702 once invoked, about $0.0008 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.
design-md-extractor compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| design-md-extractorrenky1025/agent-skills | Skill | 11 | 28d ago | MIT | A | 193 | Claude Code, Codex |
| ui-ux-pro-maxDuanZGit/D-Hub | Skill | 0 | yesterday | MIT | A | 114 | Claude Code |
| create-xilehui-brand-posterCatmint103/xilehui-brand-agent | Skill | 3 | 23d ago | none | A | 169 | Codex |
| xilehui-header-footer-templateCatmint103/xilehui-brand-agent | Skill | 3 | 23d ago | none | A | 95 | Codex |
| SwiftUIonmyway133/claude-code-plugins | Skill | 5 | 10mo ago | MIT | A | 16 | Claude Code |
| Frontend Designonmyway133/claude-code-plugins | Skill | 5 | 10mo ago | MIT | A | 19 | Claude Code |
| design-taste-frontendDuanZGit/D-Hub | Skill | 0 | yesterday | MIT | A | 61 | Claude Code |