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 skills add dkadts/landing-kit-building --skill mobilegit clone --depth 1 https://github.com/dkadts/landing-kit-buildingWrote 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/dkadts/landing-kit-building/mobile)<a href="https://agentmods.dev/skills/dkadts/landing-kit-building/mobile"><img src="https://agentmods.dev/badge/skills/dkadts/landing-kit-building/mobile.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 | $0.00088 | $0.02250 |
| Opus 5 | $0.00044 | $0.01125 |
| Sonnet 5 | $0.00018 | $0.00450 |
| Haiku 4.5 | $0.00009 | $0.00225 |
Grade A, and why
mobile 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 — 213 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/mobile
Skill hardened by real iterations. All rules below come from projects where mobile ate weeks and hundreds of fixes.
When to use
brief/00-priority.md=desktop-first.- After
/build(desktop version ready). - Edits to an existing mobile version.
If mobile-first — this skill does not apply. Mobile is built directly in /build, desktop is extended via expansion.css.
Requirements
- Desktop version exists and works.
- All sections assembled,
/auditshows desktop = pass. site/css/responsive.cssexists (empty template).
Rules (must-follow)
1. Breakpoints
≤ 768px= mobile (hamburger active, layout adapted).≤ 480px= small-phone (targeted fixes where general mobile rules are insufficient).
2. Preserve desktop composition
Do NOT restructure blocks. Do not change element order inside a section. Do not swap layouts (grid → stack without reason). Scale proportionally in the same positioning.
Exception: if an element physically does not fit (e.g. a horizontal-timeline of 6 steps does not work at 390px) — make an explicit decision to restructure and log it in DESIGN.md.
3. Uniform scale factor per block
Within one block — one multiplier for all sizes (card:phone ratio, gap, margin, height). Otherwise proportions break.
Example: if desktop .card { width: 20vw; } → mobile .card { width: 45vw; } (×2.25). Then gap, phone-mockup, and everything inside — also ×2.25.
4. Preserve JS-driven carousels
Never turn a JS carousel into CSS scroll-snap on mobile. Never set transform: none !important on .track — it will kill the JS.
If a different visual is needed — change sizes/gap, but not the behavior type.
5. Text in collapsed cards — nowrap + ellipsis
When a card is scaled down, inner text must:
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
Otherwise lines spill sideways or wrap to new lines.
6. Font-size via clamp()
font-size: clamp(min_px, Nvw, max_px) instead of raw Nvw. Guarantees text does not collapse to invisibility at 320px.
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 · 213 lines · 88 tokens per session scan A c756f536b3bb
mobile is a skill published in the GitHub repository dkadts/landing-kit-building (2 stars, last pushed 19d ago), licensed MIT. It adds 88 tokens to every session and 2,250 once invoked, about $0.0004 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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