Borrowing it
Nothing to install: this file belongs to AmanKtyr/Tailor. 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/AmanKtyr/Tailor/main/.agents/skills/frontend/SKILL.mdgit clone --depth 1 https://github.com/AmanKtyr/TailorWrote 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/skills/amanktyr/tailor/frontend)<a href="https://agentmods.dev/skills/amanktyr/tailor/frontend"><img src="https://agentmods.dev/badge/skills/amanktyr/tailor/frontend/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.
<a href="https://agentmods.dev/skills/amanktyr/tailor/frontend"><img src="https://agentmods.dev/badge/skills/amanktyr/tailor/frontend.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00040 | $0.01355 |
| Opus 5.5 | $0.00016 | $0.00542 |
| Sonnet 5.5 | $0.00008 | $0.00271 |
| Haiku 4.5 | $0.00004 | $0.00136 |
Grade A, and why
frontend 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 10d 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 — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Engineering Skill
Activate this skill when creating or modifying user interfaces, client components, styling systems, design tokens, hooks, or frontend state.
Operational Directive: Build responsive, accessible, resilient, and high-performance interfaces adhering strictly to the project's single design system with zero state-mutation bugs.
1. Strict Negative Guardrail: Zero Unrequested Styling & Token Invariant
- Zero Unrequested Styling Rule: NEVER add, alter, or restyle CSS, classes, colors, gradients, dark-mode themes, or animations unless visual/styling changes are explicitly requested by the user.
- Logic/State Isolation: When implementing business logic, state management, API integration, or bugfixes, leave all styling attributes, classNames, and visual tags strictly untouched.
- Inspect
.ai/UI.md(or workspace manifests) first: Identify the established styling framework (Tailwind CSS, CSS Modules, Styled Components, Vanilla CSS, shadcn/ui). - Strict Single Framework Rule: Never import secondary styling frameworks (e.g. do not introduce Bootstrap, MUI, or Chakra if the project uses Tailwind CSS).
- Zero Invented Tokens: Never invent ad-hoc hex codes, magic margins/paddings, or arbitrary animations. Always reuse existing project theme tokens.
- Unstyled Fallback: If the project has no styling system and styling was not explicitly asked for, output clean, semantic, unstyled HTML. Never invent a custom CSS theme or inline styles unprompted.
2. Component Hierarchy & Separation of Concerns
Structure UI components using the Smart Container vs Presentational Component pattern:
┌────────────────────────────────────────────────────────┐
│ Smart / Container Component │
│ - Handles data fetching, URL query params, hooks │
│ - Passes data and event callbacks to UI components │
└───────────────────────────┬────────────────────────────┘
│
┌───────────────────────────▼────────────────────────────┐
│ Presentational / Dumb Component │
│ - Pure visual rendering, receives data via props │
│ - Completely stateless or localized animation state │
│ - High reusability across pages │
└────────────────────────────────────────────────────────┘
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.
- 10d ago Changed · +73 lines af5f01f8a829
- 1mo ago Changed · +3 lines · +14 tokens per session c197dfdd9dea
- 1mo ago First seen · 55 lines · 26 tokens per session scan A 0e956d086da2
frontend is a skill published in the GitHub repository AmanKtyr/Tailor (6 stars, last pushed 11d ago), licensed MIT. It adds 40 tokens to every session and 1,355 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.
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