Borrowing it
Nothing to install: this file belongs to syhily/kobato. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/syhily/kobato/main/.agents/skills/vercel-geist-design-system/SKILL.mdgit clone --depth 1 https://github.com/syhily/kobatoWrote 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/syhily/kobato/vercel-geist-design-system)<a href="https://agentmods.dev/skills/syhily/kobato/vercel-geist-design-system"><img src="https://agentmods.dev/badge/skills/syhily/kobato/vercel-geist-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/syhily/kobato/vercel-geist-design-system"><img src="https://agentmods.dev/badge/skills/syhily/kobato/vercel-geist-design-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00141 | $0.02782 |
| Opus 5 | $0.00071 | $0.01391 |
| Sonnet 5 | $0.00028 | $0.00556 |
| Haiku 4.5 | $0.00014 | $0.00278 |
Grade A, and why
vercel-geist-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 10d 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 — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vercel Geist Design System
Use this community skill to make interfaces feel like they belong in Vercel's Geist design system: precise, calm, high-contrast, developer-focused, and production-ready. Official Vercel pages are the source of truth. This is not official Vercel guidance and is not permission to copy Vercel product screens.
Reference Loading Contract
This compact file is the operating contract. Detailed rules live in
references/; load only what the task needs, but never skip a required
reference because this summary seems sufficient.
- Always load
references/source-of-truth-gate.mdfor triggered visual work before claiming Geist, strict Geist, docs-aligned Geist, source-of-truth alignment, or Vercel Taste Gate passage. - Load
references/foundation-and-style-rules.mdbefore creating, restyling, redesigning, reviewing, or materially changing rendered UI. - Load
references/official-reference-map.mdwhen mapping foundations, brand/assets, or components to official Vercel URLs. - Load
references/vercel-design.mdwhen exact bundled light-theme token, component-default, motion, layout, focus, or voice values are needed. Loadreferences/vercel-design-dark.mdfor the same dark-theme values. - Load
references/component-system.mdbefore components, primitives, component states, custom compositions, or component-page mapping. - Load
references/trust-brand-and-asset-rules.mdbefore certification/trust credential displays, official marks, iconography, logos, badges, or brand asset work. - Load
references/motion-performance-copy-rules.mdbefore UI copy, performance-relevant UI, motion/interaction, or Web Interface Guidelines overlay work. - Load
references/companion-routing.mdonly when another Skills.sh entry, framework helper, verification helper, tool, or conditional surface could be relevant. - Load
references/taste-and-verification.mdbefore final audit, screenshots, interaction checks, or final response for triggered visual work.
What ships with it
10 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.
- references/companion-routing.md 7.5 KB
- references/component-system.md 13 KB
- references/foundation-and-style-rules.md 24 KB
- references/motion-performance-copy-rules.md 8.5 KB
- references/official-reference-map.md 5.0 KB
- references/source-of-truth-gate.md 8.7 KB
- references/taste-and-verification.md 22 KB
- references/trust-brand-and-asset-rules.md 3.1 KB
- references/vercel-design-dark.md 18 KB
- references/vercel-design.md 18 KB
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.
- 10d ago First seen · 234 lines · 141 tokens per session scan A 509955708baa
vercel-geist-design-system is a skill published in the GitHub repository syhily/kobato (115 stars, last pushed today), licensed MIT. It adds 141 tokens to every session and 2,782 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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