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 ryne2010/harness-engineering-audit --skill frontend-paritygit clone --depth 1 https://github.com/ryne2010/harness-engineering-auditWrote 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/ryne2010/harness-engineering-audit/frontend-parity)<a href="https://agentmods.dev/skills/ryne2010/harness-engineering-audit/frontend-parity"><img src="https://agentmods.dev/badge/skills/ryne2010/harness-engineering-audit/frontend-parity/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/ryne2010/harness-engineering-audit/frontend-parity"><img src="https://agentmods.dev/badge/skills/ryne2010/harness-engineering-audit/frontend-parity.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 | $0.00031 | $0.00184 |
| Opus 5.5 | $0.00012 | $0.00074 |
| Sonnet 5.5 | $0.00006 | $0.00037 |
| Haiku 4.5 | $0.00003 | $0.00018 |
Grade A, and why
frontend-parity 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.
What it actually says
frontend parity
Follow the repository source-of-truth docs. Treat generated visual targets as design-intent evidence and verify against screen contracts, not chat memory. Do not expand product scope, enable real-world effects, use real PII, or weaken tests/invariants.
Workflow
- Read the visual product spec pack, screen contracts, user stories, route capsules, component contracts, and validation policy.
- Inspect current implementation and component workbench coverage.
- Make the smallest safe change needed for the active visual parity task.
- Verify responsive, interaction, content, accessibility, theme, and reduced-motion behavior where relevant.
- Capture screenshot/test evidence and record accepted deltas, unresolved assumptions, and remaining risks.
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 · 17 lines · 31 tokens per session scan A 7ba8ce3bced3
frontend-parity is a skill published in the GitHub repository ryne2010/harness-engineering-audit (5 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 184 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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image-compare
Compare two image files on disk and report what changed, region by region. Trigger on "what changed between these two images", "diff these PNGs", "did this render drift", "compare screenshots/exports/renders".
accessibility-a11y
WCAG 2.2 compliance, ARIA patterns, keyboard navigation, screen readers, automated testing.
frontend-manual-testing
Use when the task changes anything a user sees in a web app - booting it, driving flows with the browser tools, the four-width check, console/network/keyboard checks and the visual checklist.