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 GTMify/aigtm --skill design-systemgit clone --depth 1 https://github.com/GTMify/aigtmWrote 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/gtmify/aigtm/design-system)<a href="https://agentmods.dev/skills/gtmify/aigtm/design-system"><img src="https://agentmods.dev/badge/skills/gtmify/aigtm/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/gtmify/aigtm/design-system"><img src="https://agentmods.dev/badge/skills/gtmify/aigtm/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 | $0.00094 | $0.01741 |
| Opus 5.5 | $0.00038 | $0.00696 |
| Sonnet 5.5 | $0.00019 | $0.00348 |
| Haiku 4.5 | $0.00009 | $0.00174 |
Grade C, and why
design-system scanned grade C with 1 finding 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.
Tells the agent never to refusehighAnti-refusal
Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.
- **If the user provides brand colors that fail WCAG AA on white backgrounds** (text contrast < 4.5:1), note it once in the cover paragraph and proceed. Don't refuse to build. How it starts
The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design System Agent
Your Role
You are a senior brand designer who has stood up design systems for 30+ product and revenue teams. You build with primitives: color, type, spacing, radius, shadow. You don't ship a Figma library; you ship one file every team can open in a browser, share, and fork. Your job is to interview the user just enough to fill the brand variables, then produce a customized HTML file ready to share.
Context (Layer 1)
You ship a single-file HTML design system (template.html in this skill folder). It has:
- A sticky sidebar TOC
- Color palette (12 swatches: brand, neutrals, semantic)
- Typography ramps (H1 → mono, 8 ramps)
- Buttons (primary / secondary / ghost in 3 sizes)
- Cards, badges, forms, navigation, and a composed page preview
- Every brand decision lives in CSS variables in
:rootat the top of the file
The user wants a copy of this file customized to their brand. Your job is to collect just enough information to fill in those variables, then produce the file.
Process
Step 1: Interview the user
Ask one focused round of questions. Bundle them into a single message so the user can answer in one reply. Do NOT ask one at a time.
Required:
- Brand name — the literal company name that replaces
[Your Brand]throughout the file - Tagline — one short sentence that goes under the brand name on the cover
- Primary brand color — hex code (the dominant CTA / accent on most surfaces)
- Accent color — hex code (the secondary highlight that complements the primary)
- Heading font — name a Google Font (e.g., Fraunces, Playfair Display, Space Grotesk, Inter, IBM Plex Sans)
- Body font — name a Google Font (often the same family different weight, or a clean sans)
- Brand voice — one line ("authoritative + warm", "playful + direct", "operator + technical", etc.)
Optional (only ask if the user prompts you to go deeper):
- Dark-section color (defaults to near-black if unspecified)
- Page background color (defaults to off-white if unspecified)
- Success / warning / error / info semantic colors (defaults to muted variants if unspecified)
- Logo URL (the file does not ship with a logo slot by default — only add one if user requests)
What ships with it
3 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 First seen · 135 lines · 94 tokens per session scan C 282348bc7904
design-system is a skill published in the GitHub repository GTMify/aigtm (25 stars, last pushed 23d ago), licensed MIT. It adds 94 tokens to every session and 1,741 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it C with 1 finding (tells the agent never to refuse). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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