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.
npx agentmods add skills/mae616/design-skills/frontend-implementationnpx skills add mae616/design-skills --skill frontend-implementationgit clone --depth 1 https://github.com/mae616/design-skillsWrote 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/mae616/design-skills/frontend-implementation)<a href="https://agentmods.dev/skills/mae616/design-skills/frontend-implementation"><img src="https://agentmods.dev/badge/skills/mae616/design-skills/frontend-implementation.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 | $0.00035 | $0.01337 |
| Opus 5 | $0.00017 | $0.00668 |
| Sonnet 5 | $0.00007 | $0.00267 |
| Haiku 4.5 | $0.00003 | $0.00134 |
Grade A, and why
frontend-implementation 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 6d 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 — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Implementation Skill
When to Apply
Apply this skill when the request involves:
- UI implementation, design-to-code, Figma to code, component implementation, styling, responsive design, fixing broken UI
- UI実装、デザインから実装、Figmaから実装、コンポーネント実装、スタイル調整、レスポンシブ対応、UIの崩れ修正
- Translating any design tool output (Figma/Pencil/Canva/sketches) to code
Core Principles
- Goal is not pixel-perfect copying, but maintaining ratios, alignment, resilience, and consistency.
- Translate, don't transcribe. Design tool values (px) are references; implementation uses scales, ratios, and structure.
- Fixed values are exceptions. If using fixed values, articulate why (spec requirement, media, tap target, etc.).
Design Philosophy (Decision Rules)
- UI is a set of constraints, not a picture. Include states (loading/error/empty/disabled) to be complete.
- Don't create alignment with margin tweaks. Use structure (flex/grid) and
gap. - Avoid fixed heights. Consider
min/max/overflowfirst. - Typography is role-based. Don't proliferate by copying values.
- Handle exceptions upfront. Long text, zero items, failures, delays—no afterthoughts.
- Articulate design intent first (what to emphasize, how to guide the eye), then create structure that preserves it.
- Width follows the viewport. UI should adapt to screen width (SCALE/FILL intent); don't just crop from the left.
Translation Process (Design Tool → Code)
1) Read Intent Before Numbers
- Purpose (what should users understand/do first on this screen)
- Visual flow (first → second → last thing to see)
- Emphasis (hero / supporting / background elements)
- Hierarchy (parent-child, groupings)
- Stretch/state intent (Auto Layout / Constraints / Variants)
- Spacing rules (gap/padding patterns)
- Alignment (what aligns to what)
- Variable elements (text length, list count, image ratio, input values)
2) Convert to Implementation
- px → Round to scale (e.g., 4/8/12/16/24/32/40/48)
- font-size → Map to roles (heading/body/caption)
- Local margin tweaks → Convert to layout structure (flex/grid/gap, clarify parent-child responsibilities)
- Fixed width/height → Convert to constraints (min/max, wrap, ellipsis, overflow)
- Width design → Separate background/container/content responsibilities
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.
- 6d ago First seen · 130 lines · 35 tokens per session scan A a2a3b1719f45
frontend-implementation is a skill published in the GitHub repository mae616/design-skills (10 stars, last pushed 7mo ago), licensed MIT. It adds 35 tokens to every session and 1,337 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 2026-08-31.
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