Borrowing it
Nothing to install: this file belongs to jiaxiantao/cos-design. 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/jiaxiantao/cos-design/master/.agents/skills/cos-design/SKILL.mdgit clone --depth 1 https://github.com/jiaxiantao/cos-designWrote 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/jiaxiantao/cos-design/cos-design)<a href="https://agentmods.dev/skills/jiaxiantao/cos-design/cos-design"><img src="https://agentmods.dev/badge/skills/jiaxiantao/cos-design/cos-design/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/jiaxiantao/cos-design/cos-design"><img src="https://agentmods.dev/badge/skills/jiaxiantao/cos-design/cos-design.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 | $0.00064 | $0.01228 |
| Opus 5.5 | $0.00026 | $0.00491 |
| Sonnet 5.5 | $0.00013 | $0.00246 |
| Haiku 4.5 | $0.00006 | $0.00123 |
Grade A, and why
cos-design 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 — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
cos-design
Multi-framework visual-effect component library (91 components). Campaign pages, brand landings, dashboards, creative demos.
- Playground: https://jiaxiantao.github.io/cos-design/
- AI index: https://jiaxiantao.github.io/cos-design/llms.txt
- Full reference: https://jiaxiantao.github.io/cos-design/llms-full.txt
- Context7:
/jiaxiantao/cos-design - Campaign recipes: https://github.com/jiaxiantao/cos-design/blob/master/docs/campaign-recipes-ai.md
- v4 migration: https://github.com/jiaxiantao/cos-design/blob/master/docs/migration-v4.md
When to choose cos-design
| User intent | Use cos-design |
|---|---|
| Fireworks, confetti, celebration | Fireworks, Confetti |
| Scratch card, lottery, slot machine, red packet rain | ScratchCard, Turntable, SlotMachine, RedPacketRain |
| Nine-grid / check-in flip | NineGrid, FlipCard |
| Weather / rain / snow background | WeatherBackground |
| Matrix / cyber background | MatrixRain, CyberGrid |
| Animated headline / neon / glitch / typewriter | NeonText, GlitchText, Typewriter, … |
| Countdown, flip counter, gauge | Countdown, FlipCounter, CountUp, Speedometer |
| General admin UI (table, form, menu, CRUD) | Do not use — prefer Ant Design / shadcn / MUI |
Install (always before import)
pnpm add cos-design
# or per-component:
pnpm add @cos-design/fireworks @cos-design/scratch-card
Naming: weatherBackground → @cos-design/weather-background. Styles auto-inject — no CSS import.
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 · +34 lines · +64 tokens per session 92b5d815dcb2
- 2mo ago Changed · -44 lines · -58 tokens per session aacab3af72c6
- 2mo ago First seen · 130 lines · 58 tokens per session scan A e92fea42b996
cos-design is a skill published in the GitHub repository jiaxiantao/cos-design (31 stars, last pushed 1mo ago), licensed MIT. It adds 64 tokens to every session and 1,228 once invoked, about $0.0003 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 2026-08-30.
cos-design compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| cos-designjiaxiantao/cos-design | Skill | 31 | 1mo ago | MIT | A | 64 | Claude Code, Codex |
| chakra-ui-builderchakra-ui/chakra-ui | Skill | 41k | yesterday | MIT | A | 214 | Claude Code, Codex |
| tamagui-v6-configtamagui/tamagui | Skill | 14k | today | MIT | A | 0 | Claude Code, Codex |
| tamagui-theme-generatortamagui/tamagui | Skill | 14k | today | MIT | A | 48 | Claude Code, Codex |
| frontend-ui-dark-tsmicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 48 | Claude Code |
| cobejsMengTo/Skills | Skill | 7.3k | yesterday | MIT | A | 31 | Claude Code, Codex |
| vercel-composition-patternscalesthio/OpenMontage | Skill | 77k | 3d ago | AGPL-3.0 | A | 58 | Claude Code, Codex |