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 Miosa-osa/OSA --skill frontend-qualitygit clone --depth 1 https://github.com/Miosa-osa/OSAWrote 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/miosa-osa/osa/frontend-quality)<a href="https://agentmods.dev/skills/miosa-osa/osa/frontend-quality"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/frontend-quality/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/miosa-osa/osa/frontend-quality"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/frontend-quality.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 | $0.00047 | $0.00353 |
| Opus 5.5 | $0.00019 | $0.00141 |
| Sonnet 5.5 | $0.00009 | $0.00071 |
| Haiku 4.5 | $0.00005 | $0.00035 |
Grade A, and why
frontend-quality 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 2mo 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.
What it actually says
Frontend Quality
Treat the rendered interface as the product, not merely the source code.
Procedure
- Reproduce the current interface in the real browser, terminal, or device surface.
- Capture the relevant viewport size, state, interaction, and screenshot.
- Trace layout ownership before editing styles or rendering code.
- Check narrow, typical, and wide sizes plus content extremes.
- Preserve hierarchy, spacing rhythm, readable typography, and clear interaction states.
- Verify keyboard use, focus, contrast, labels, and reduced-motion behavior where applicable.
- Add an automated visual, component, PTY, or interaction regression when the harness supports it.
- Re-run the original interaction and inspect the pixels directly.
Resize and terminal interfaces
- Derive layout from the current frame size rather than stale cached dimensions.
- Keep one authoritative render path for initial draw and resize replay.
- Do not duplicate committed content while redrawing live regions.
- Verify rapid repeated resizes, not only one final resize event.
- Test narrow widths where wrapping changes row counts.
Completion evidence
Provide the tested dimensions and interaction, not only a successful compilation.
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.
- 2mo ago First seen · 46 lines · 47 tokens per session scan A 59c7efc382da
frontend-quality is a skill published in the GitHub repository Miosa-osa/OSA (78 stars, last pushed yesterday), licensed Apache-2.0. It adds 47 tokens to every session and 353 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 2026-08-30.
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