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shadcn

shadcn is a skill for Claude Code, Codex from invertase/docs.page. It costs 90 tokens per session (4,148 once invoked), scanned A, a copy of shadcn, Apache-2.0.

A tool for adding and working with shadcn/ui components, which are reusable user-interface building blocks provided as source code for your project.

In plain words
What is it for?
Use it to search component registries, add components, read their documentation, fix or debug them, and compose interfaces such as forms, dashboards, and settings pages.
Why use it?
It helps you find existing components, understand how to use them, and combine or style them consistently instead of writing each interface element from scratch.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

not rated 675repo +2 yesterday A scan 90 tokens copy · 95% Apache-2.0

Good fit Use it to search component registries, add components, read their documentation, fix or debug them, and compose interfaces such as forms, dashboards, and settings pages.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/invertase/docs.page/shadcn
View source ↗ invertase/docs.page docs.page
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.

Any agent
npx skills add invertase/docs.page --skill shadcn
Clone the repo
git clone --depth 1 https://github.com/invertase/docs.page

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 shadcn

README.md
[![agentmods](https://agentmods.dev/badge/skills/invertase/docs.page/shadcn/github.svg)](https://agentmods.dev/skills/invertase/docs.page/shadcn)
Your own site
<a href="https://agentmods.dev/skills/invertase/docs.page/shadcn"><img src="https://agentmods.dev/badge/skills/invertase/docs.page/shadcn/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.

agentmods 80×15 button for shadcn

Your own site · 80×15
<a href="https://agentmods.dev/skills/invertase/docs.page/shadcn"><img src="https://agentmods.dev/badge/skills/invertase/docs.page/shadcn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,148 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 95% copy Near-identical to another mod 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 5.1 $0.00090 $0.04148
Opus 5.5 $0.00036 $0.01659
Sonnet 5.5 $0.00018 $0.00830
Haiku 4.5 $0.00009 $0.00415

Measured 1mo ago against content hash 2089d0638e49, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

shadcn 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.

Origin

This is a copy

95% identical to shadcn — 66 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

app/.agents/skills/shadcn/SKILL.md · 247 lines

How it starts

The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.

shadcn/ui

A framework for building ui, components and design systems. Components are added as source code to the user's project via the CLI.

IMPORTANT: Run all CLI commands using the project's package runner: npx shadcn@latest, pnpm dlx shadcn@latest, or bunx --bun shadcn@latest — based on the project's packageManager. Examples below use npx shadcn@latest but substitute the correct runner for the project.

Current Project Context

!`npx shadcn@latest info --json`

The JSON above contains the project config and installed components. Use npx shadcn@latest docs <component> to get documentation and example URLs for any component.

Principles

  1. Use existing components first. Use npx shadcn@latest search to check registries before writing custom UI. Check community registries too.
  2. Compose, don't reinvent. Settings page = Tabs + Card + form controls. Dashboard = Sidebar + Card + Chart + Table.
  3. Use built-in variants before custom styles. variant="outline", size="sm", etc.
  4. Use semantic colors. bg-primary, text-muted-foreground — never raw values like bg-blue-500.

Critical Rules

These rules are always enforced. Each links to a file with Incorrect/Correct code pairs.

Styling & Tailwind → styling.md

  • className for layout, not styling. Never override component colors or typography.
  • No space-x-* or space-y-*. Use flex with gap-*. For vertical stacks, flex flex-col gap-*.
  • Use size-* when width and height are equal. size-10 not w-10 h-10.
  • Use truncate shorthand. Not overflow-hidden text-ellipsis whitespace-nowrap.
  • No manual dark: color overrides. Use semantic tokens (bg-background, text-muted-foreground).
  • Use cn() for conditional classes. Don't write manual template literal ternaries.
  • No manual z-index on overlay components. Dialog, Sheet, Popover, etc. handle their own stacking.

Forms & Inputs → forms.md

Read the full file on GitHub · 247 lines

Files

What ships with it

12 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. 1mo ago First seen · 247 lines · 90 tokens per session scan A 2089d0638e49

Subscribe to this mod's changes

shadcn is a skill published in the GitHub repository invertase/docs.page (675 stars, last pushed yesterday), licensed Apache-2.0. It adds 90 tokens to every session and 4,148 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 95% identical to shadcn, differing in 66 lines, and is treated as a copy.

Design and UXFrontenddocumentationdocumentation-generatormarkdown-to-html
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