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 sanky369/vibe-building-skills --skill typography-systemgit clone --depth 1 https://github.com/sanky369/vibe-building-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/sanky369/vibe-building-skills/typography-system)<a href="https://agentmods.dev/skills/sanky369/vibe-building-skills/typography-system"><img src="https://agentmods.dev/badge/skills/sanky369/vibe-building-skills/typography-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/sanky369/vibe-building-skills/typography-system"><img src="https://agentmods.dev/badge/skills/sanky369/vibe-building-skills/typography-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 | $0.00137 | $0.02049 |
| Opus 5 | $0.00068 | $0.01025 |
| Sonnet 5 | $0.00027 | $0.00410 |
| Haiku 4.5 | $0.00014 | $0.00205 |
Grade A, and why
typography-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 12d 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 — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Typography System
Produce a working type scale for this codebase — tokens wired into the existing styling system and applied to real headings/body/UI text — not an essay about type. Governing principle: sizes come from a modular scale chosen for the product's density; readability constraints (line-height, measure, contrast) are non-negotiable and override aesthetics.
When to use / handoffs
- Use for type scales, font selection/loading, heading hierarchy, readability fixes, fluid type.
- No token infrastructure at all yet → run
skills/frontend-design/design-foundationfirst (or create the type tokens as its first slice). - Text colors failing contrast is shared ground with
skills/frontend-design/color-system— fix the pairs you touch here; send palette-wide work there. - Headings sized right but the page still scans poorly →
skills/frontend-design/visual-hierarchy-refactoring.
Step 1 — Inspect the codebase
- Count font sizes. Grep for
font-size:\s*[\d.]+(px|rem), Tailwindtext-(xs|sm|base|lg|xl|\dxl)and arbitrarytext-\[. Distinct count >8–10 = sprawl; record the list with frequencies. - Find the fonts. Grep for
font-family|@font-face|fonts.googleapis|next/fontand checktailwind.config.*/@themeforfontFamily. Count families and loaded weights. - Check line-height and measure. Grep
line-height|leading-andmax-width.*ch|max-w-prose. - Check existing tokens. If
design-foundationran, extend its file; never start a parallel system. - Classify the product's density from the screens themselves: data tables/dashboards/many controls = dense; landing/marketing = spacious; long-form reading = editorial.
Step 2 — Intake
Ask in one batch, only what's missing: brand feel in a few words (or "pick for me"), and keep current fonts or open to change? Infer density from the code, base size 16px unless dense-data (then 14px body is acceptable). Don't stall — with visible screens, state assumptions and build.
What ships with it
1 file 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.
- 12d ago First seen · 116 lines · 137 tokens per session scan A 16da1639f75d
typography-system is a skill published in the GitHub repository sanky369/vibe-building-skills (30 stars, last pushed 2mo ago), licensed MIT. It adds 137 tokens to every session and 2,049 once invoked, about $0.0007 per session on Opus 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 2026-08-30.
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