A skill for working with shadcn/ui, a collection of user-interface components added as source code to a project. It covers adding, finding, fixing, styling, and combining these components.

Building and debugging interfaces such as forms, dashboards, settings pages, and chat screens with shadcn/ui components.

It helps developers reuse the project's existing components and registry examples instead of rebuilding common interface pieces from scratch.

shadcn — Skill by kriasoft

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.

agentmods

npx agentmods add skills/kriasoft/react-starter-kit/shadcn

Any agent

npx skills add kriasoft/react-starter-kit --skill shadcn

Clone the repo

git clone --depth 1 https://github.com/kriasoft/react-starter-kit

Made for: Claude Code, Codex.

Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,830 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 100% 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.

Model	Per session	Once invoked
Fable 5	$0.00094	$0.04830
Opus 5	$0.00047	$0.02415
Sonnet 5	$0.00019	$0.00966
Haiku 4.5	$0.00009	$0.00483

Measured 3d ago against content hash f0148b54fe76, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 3d 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

100% identical to shadcn — 40 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.

.agents/skills/shadcn/SKILL.md · 274 lines

How it starts

The opening of the file, as written. The whole thing — 274 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

Use existing components first. Use npx shadcn@latest search to check registries before writing custom UI. Check community registries too.
Compose, don't reinvent. Settings page = Tabs + Card + form controls. Dashboard = Sidebar + Card + Chart + Table.
Use built-in variants before custom styles. variant="outline", size="sm", etc.
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 · 274 lines

Files

What ships with it

14 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.

3d ago First seen · 274 lines · 94 tokens per session scan A f0148b54fe76

Subscribe to this mod's changes

shadcn is a skill published in the GitHub repository kriasoft/react-starter-kit (23,673 stars, last pushed 2d ago), licensed MIT. It adds 94 tokens to every session and 4,830 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to shadcn, differing in 40 lines, and is treated as a copy.

Frontend boilerplate nodejs starter-kit template

django-celery-expert

Expert Django Celery guidance for asynchronous task processing. Use when designing background tasks, configuring Celery workers, handling task retries and errors, optimizing Celery performance, implementing periodic tasks with Celery Beat, or setting up production monitoring for Celery. Do not use for general Django…

wilfredinni/django-starter-template · 115 tokens

integration

Discover, install, and configure Vercel Marketplace integrations (databases, auth, logging, etc.). Use when adding third-party services to a Vercel project.

Elnora-AI/elnora-ai-agent-hackathon-starter-kit · 36 tokens

v0

Generate and iterate on UIs/apps with Vercel v0 via the v0 Platform API. Use when building a frontend with v0, calling the v0 API/SDK, or spending v0 credits.

Elnora-AI/elnora-ai-agent-hackathon-starter-kit · 46 tokens

vercel

Deploy, manage, and develop projects on Vercel from the command line.

Elnora-AI/elnora-ai-agent-hackathon-starter-kit · 18 tokens

django-expert

Expert Django backend development guidance. Use when creating Django models, views, serializers, or APIs; debugging ORM queries or migrations; optimizing database performance; implementing authentication; writing tests; or working with Django REST Framework. Follows Django best practices and modern patterns.

wilfredinni/django-starter-template · 55 tokens

deploy

Deploy applications to Vercel. Use when deploying to preview or production.

Elnora-AI/elnora-ai-agent-hackathon-starter-kit · 17 tokens