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 tushaarmehtaa/tushar-skills --skill mobile-firstgit clone --depth 1 https://github.com/tushaarmehtaa/tushar-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/tushaarmehtaa/tushar-skills/mobile-first)<a href="https://agentmods.dev/skills/tushaarmehtaa/tushar-skills/mobile-first"><img src="https://agentmods.dev/badge/skills/tushaarmehtaa/tushar-skills/mobile-first/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/tushaarmehtaa/tushar-skills/mobile-first"><img src="https://agentmods.dev/badge/skills/tushaarmehtaa/tushar-skills/mobile-first.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 | $0.00035 | $0.01123 |
| Opus 5.5 | $0.00014 | $0.00449 |
| Sonnet 5.5 | $0.00007 | $0.00225 |
| Haiku 4.5 | $0.00003 | $0.00112 |
Grade A, and why
mobile-first 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 1mo 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mobile first
Make the primary task usable on narrow, zoomed, touch, keyboard, and reduced-motion presentations. Reconsider layout relationships when width changes; do not merely shrink the desktop composition or optimize for the shortest possible page.
Own responsive behavior, not the product
This skill owns viewport-dependent layout, reflow, overflow, touch ergonomics, focus visibility, mobile navigation behavior, and responsive verification.
It does not rewrite the proposition, remove product requirements, invent a mobile-only conversion funnel, or replace the project's visual system. Use landing-page or interface-design first when the underlying information architecture or interface job is wrong.
Choose the mode
- Audit — measure and report without changing files.
- Repair — measure, implement the smallest coherent responsive changes, then compare.
- Build — apply the responsive contract while creating a new interface; there is no before-state baseline.
- Handoff — provide sequenced, independently executable change briefs when the user asks another person or agent to implement.
Infer the mode from the request and state it in one sentence. A request to fix or build authorizes in-scope implementation; do not stop at prompts unless handoff was requested.
Inspect before choosing a transform
Read the repository's instructions, layout primitives, tokens, breakpoints, navigation, content extremes, browser tests, and supported device requirements. Render the current interface when possible.
For an existing interface, read references/audit.md and record the baseline before editing. Page height is diagnostic context, not a target: a shorter page can be worse when it hides comparison, proof, controls, or recovery paths.
Resolve consequential choices interactively
Most responsive repairs are reversible; make them without interrogation. Ask only when two plausible layouts materially change content order, navigation access, comparison behavior, or the primary action.
What ships with it
3 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.
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.
- 1mo ago First seen · 89 lines · 35 tokens per session scan A b7bce4a31d34
mobile-first is a skill published in the GitHub repository tushaarmehtaa/tushar-skills (12 stars, last pushed 5d ago), licensed MIT. It adds 35 tokens to every session and 1,123 once invoked, about $0.0001 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 2026-09-05.
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