HeroUI is a React component library that provides ready-made interface elements for building web applications. Developers use its components as building blocks in React projects. The catalogue includes agents, skills, and instructions for working with HeroUI.
Borrowing it
Nothing to install: this file belongs to heroui-inc/heroui. 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/heroui-inc/heroui/v3/AGENTS.mdgit clone --depth 1 https://github.com/heroui-inc/herouiWrote 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/instructions/heroui-inc/heroui/agents-md)<a href="https://agentmods.dev/instructions/heroui-inc/heroui/agents-md"><img src="https://agentmods.dev/badge/instructions/heroui-inc/heroui/agents-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.03450 | $0.03450 |
| Opus 5 | $0.01725 | $0.01725 |
| Sonnet 5 | $0.00690 | $0.00690 |
| Haiku 4.5 | $0.00345 | $0.00345 |
Grade A, and why
heroui AGENTS.md 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 8d 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 — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Instructions for AI agents working with the HeroUI v3 repository.
Repository Overview
HeroUI v3 is a modern React UI library built with Tailwind CSS v4, organized as a pnpm monorepo managed by Turborepo. Components are built on top of React Aria Components and follow a compound component pattern similar to Radix UI.
Tech Stack
| Technology | Version | Purpose |
|---|---|---|
| Node.js | 22+ | Runtime |
| pnpm | 10.26.2 | Package manager (via corepack) |
| React | 19+ | UI framework |
| Tailwind CSS | 4.x | Styling |
| TypeScript | 5.x | Type safety |
| Turborepo | 2.x | Build orchestration |
| Storybook | Latest | Component development |
| Vitest | 4.x | Testing |
| React Aria Components | Latest | Accessibility primitives |
| tailwind-variants | Latest | Variant-based styling (includes twMerge) |
Monorepo Structure
/
├── apps/
│ └── docs/ # Documentation site (Next.js + Fumadocs)
├── packages/
│ ├── react/ # Main UI library (@heroui/react)
│ │ ├── src/components/ # All components
│ │ ├── src/utils/ # Shared utilities
│ │ └── scripts/ # Build & codegen scripts
│ ├── styles/ # CSS styles & variants (@heroui/styles)
│ │ ├── components/ # Per-component .css files (flat, e.g. button.css)
│ │ ├── themes/ # Theme variables
│ │ └── src/components/ # Per-component .styles.ts (tailwind-variants)
│ ├── standard/ # Shared ESLint, Prettier, TS configs
│ ├── storybook/ # Storybook configuration
│ └── testing/ # Shared test harness (@heroui/testing)
├── turbo.json
└── pnpm-workspace.yaml
Commands
| Action | Command |
|---|---|
| Install dependencies | pnpm i --hoist |
| Build all packages | pnpm build |
| Build specific package | pnpm build --filter=@heroui/react |
| Dev (Storybook, port 6006) | pnpm dev |
| Dev (Docs site, port 3000) | pnpm dev:docs |
| Lint | pnpm lint |
| Typecheck | pnpm typecheck |
| Test all (jsdom + browser) | pnpm test |
| Test one file (filter) | pnpm --filter @heroui/react exec vitest run button |
| Test with coverage | pnpm test:coverage (jsdom floors only — not “done”) |
| Test changed files (local) | pnpm --filter @heroui/react test:changed (jsdom only; not a gate) |
| Format | pnpm run format |
| Bump version | pnpm version:bump |
| Scaffold a new component | cd packages/react && pnpm add:component ComponentName |
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.
- 8d ago First seen · 326 lines · 3,450 tokens per session scan A ad0d98a339e7
heroui AGENTS.md is an instructions file published in the GitHub repository heroui-inc/heroui (30,591 stars, last pushed yesterday), licensed Apache-2.0. It adds 3,450 tokens to every session, about $0.0173 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.
Other instructions, from other repositories
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.