design-system

design-system is a skill for Claude Code, Codex from GTMify/aigtm. It costs 94 tokens per session (1,741 once invoked), scanned C, original, MIT.

A single HTML file that documents a company’s visual rules, such as colors, typography, spacing, buttons, forms, and navigation. A design system is a shared set of patterns that keeps product and marketing interfaces consistent.

In plain words
What is it for?
Use it to create a branded reference file with color swatches, type styles, interface components, and a sample page preview.
Why use it?
It gives a team one browser-openable reference instead of scattered brand decisions. It also makes the visual system easier to share and adapt.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/gtmify/aigtm/design-system
Any agent
npx skills add GTMify/aigtm --skill design-system
Clone the repo
git clone --depth 1 https://github.com/GTMify/aigtm

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/gtmify/aigtm/design-system.svg)](https://agentmods.dev/skills/gtmify/aigtm/design-system)
Your own site
<a href="https://agentmods.dev/skills/gtmify/aigtm/design-system"><img src="https://agentmods.dev/badge/skills/gtmify/aigtm/design-system.svg" alt="Measured on agentmods" height="20"></a>
Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,741 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
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 $0.00094 $0.01741
Opus 5 $0.00047 $0.00870
Sonnet 5 $0.00019 $0.00348
Haiku 4.5 $0.00009 $0.00174

Measured 4d ago against content hash 282348bc7904, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 4d 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.
skills/design-system/SKILL.md · 135 lines

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 :root at 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:

  1. Brand name — the literal company name that replaces [Your Brand] throughout the file
  2. Tagline — one short sentence that goes under the brand name on the cover
  3. Primary brand color — hex code (the dominant CTA / accent on most surfaces)
  4. Accent color — hex code (the secondary highlight that complements the primary)
  5. Heading font — name a Google Font (e.g., Fraunces, Playfair Display, Space Grotesk, Inter, IBM Plex Sans)
  6. Body font — name a Google Font (often the same family different weight, or a clean sans)
  7. 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)

Read the full file on GitHub · 135 lines

Files

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.

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. 4d ago First seen · 135 lines · 94 tokens per session scan C 282348bc7904

Subscribe to this mod's changes

design-system is a skill published in the GitHub repository GTMify/aigtm (24 stars, last pushed 26d ago), licensed MIT. It adds 94 tokens to every session and 1,741 once invoked, about $0.0005 per session on Opus 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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