aceternity-ui

aceternity-ui is a skill for Claude Code from secondsky/claude-skills. It costs 48 tokens per session (4,679 once invoked), scanned A, original, MIT.

A collection of more than 100 animated React interface components for Next.js websites, styled with Tailwind CSS. The components are added as source code so developers can modify them.

In plain words
What is it for?
Use it to create hero sections, parallax scrolling, 3D effects, dark-mode interfaces, and other animated parts of a Next.js site.
Why use it?
It avoids building common animated interface sections from scratch. It also helps when adding components through the shadcn command-line tool causes problems.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the aceternity-ui plugin — 1 skill shipped together

Good fit Use it to create hero sections, parallax scrolling, 3D effects, dark-mode interfaces, and other animated parts of a Next.js site.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/secondsky/claude-skills/aceternity-ui
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 secondsky/claude-skills --skill aceternity-ui
Clone the repo
git clone --depth 1 https://github.com/secondsky/claude-skills

Made for: Claude Code.

Or install aceternity-ui, the plugin that ships this one along with the rest of its 1 skill.

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 aceternity-ui

README.md
[![agentmods](https://agentmods.dev/badge/skills/secondsky/claude-skills/aceternity-ui/github.svg)](https://agentmods.dev/skills/secondsky/claude-skills/aceternity-ui)
Your own site
<a href="https://agentmods.dev/skills/secondsky/claude-skills/aceternity-ui"><img src="https://agentmods.dev/badge/skills/secondsky/claude-skills/aceternity-ui/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 aceternity-ui

Your own site · 80×15
<a href="https://agentmods.dev/skills/secondsky/claude-skills/aceternity-ui"><img src="https://agentmods.dev/badge/skills/secondsky/claude-skills/aceternity-ui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,679 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. Third-party audits
  • Socket pass 15 May 2026
  • Snyk warn 15 May 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 79
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 100
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 144
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found 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 $0.00048 $0.04679
Opus 5 $0.00024 $0.02339
Sonnet 5 $0.00010 $0.00936
Haiku 4.5 $0.00005 $0.00468

Measured 9d ago against content hash 8cf7144ea75d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

aceternity-ui 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 9d 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.

plugins/aceternity-ui/skills/aceternity-ui/SKILL.md · 729 lines

How it starts

The opening of the file, as written. The whole thing — 729 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Aceternity UI Skill

Overview

Aceternity UI is a premium, production-ready React component library designed for Next.js applications. It provides 100+ beautifully animated and interactive components built with Tailwind CSS and Framer Motion. Components are installed via the shadcn CLI and can be customized directly in your codebase.

Key Features:

  • 100+ animated, production-ready components
  • Built for Next.js 13+ with App Router support
  • Full TypeScript support
  • Tailwind CSS v4+ styling (CSS-first config; v3 also works with JS config)
  • Framer Motion animations
  • Dark mode support
  • Copy-paste friendly (not an npm package)
  • Full source code access for customization

Prerequisites:

  • Next.js 13+ (App Router recommended)
  • React 16.8+
  • Tailwind CSS v4+ (CSS-first @import "tailwindcss" and @theme; v3 also supported)
  • TypeScript (recommended)
  • Node.js 20+ with bun, npm, or pnpm

Installation

Initial Setup

For New Projects:

# Create Next.js project (bun preferred)
bunx create-next-app@latest my-app
# or: npx create-next-app@latest my-app
# or: pnpm create next-app@latest my-app

cd my-app

# Select these options:
# - TypeScript: Yes
# - ESLint: Yes
# - Tailwind CSS: Yes
# - src/ directory: Optional
# - App Router: Yes (recommended)
# - Import alias: @/* (default)

Initialize Aceternity UI via shadcn CLI:

# Using bun (preferred)
bunx --bun shadcn@latest init

# Using npm
npx shadcn@latest init

# Using pnpm
pnpm dlx shadcn@latest init

# During setup:
# - Style: New York (recommended)
# - Color: Zinc (or your preference)
# - CSS variables: Yes (recommended)

Configure Registry:

After initialization, update components.json to add Aceternity registry:

{
  "$schema": "https://ui.shadcn.com/schema.json",
  "style": "new-york",
  "rsc": true,
  "tsx": true,
  "tailwind": {
    "config": "tailwind.config.ts",
    "css": "app/globals.css",
    "baseColor": "zinc",
    "cssVariables": true
  },
  "aliases": {
    "components": "@/components",
    "utils": "@/lib/utils"
  },
  "registries": {
    "@aceternity": "https://ui.aceternity.com/registry/{name}.json"
  }
}

Read the full file on GitHub · 729 lines

Files

What ships with it

2 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. 9d ago First seen · 729 lines · 48 tokens per session scan A 8cf7144ea75d

Subscribe to this mod's changes

aceternity-ui is a skill published in the GitHub repository secondsky/claude-skills (216 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 4,679 once invoked, about $0.0002 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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