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Give your AI assistant deep knowledge of coss ui components, patterns, and best practices.
Passed 19 of 22 test cases with the skill, and 10 of 22 without it.
and 9 more in the full report
10 fixed9 passed either way2 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
How do you install the Coss UI skill package into a project environment using the skills CLI tool?
| Checked | Without skill | With skill |
|---|---|---|
| Provides the command npx skills add cosscom/coss. | Missed | Passed |
The instructions your model reads when the skill loads.
Skills provide AI coding assistants with structured knowledge about coss ui — component APIs, composition patterns, styling conventions, migration rules, and common pitfalls. When installed, your assistant knows how to use coss primitives correctly without guessing.
For example, you can ask your assistant to:
npx skills add cosscom/coss
This installs the coss skill into your project. Once installed, your AI assistant automatically loads it when working with coss ui components.
Learn more about the skills ecosystem at skills.sh.
The skill covers the full coss ui surface:
Reference guides for all primitives — imports, minimal patterns, inline code examples, composition rules, and common pitfalls. The assistant knows when to use Dialog vs Sheet vs Drawer, how to compose trigger-based overlays, and how to structure forms with Field.
Tailwind v4 token usage, semantic color system, icon sizing rules, data-slot selectors, --alpha() syntax, and the font variable contract (--font-sans, --font-mono, --font-heading).
Rules for migrating from shadcn/Radix to coss/Base UI — asChild to render, onSelect to onClick, Select items-first pattern, ToggleGroup type to multiple, and Slider scalar values.
Full reference for installing components via the shadcn CLI, discovery fallbacks, and manual install paths.
test cases passed, vs 10 / 22 without
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