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 bravew/trove --skill trove-visual-paritygit clone --depth 1 https://github.com/bravew/troveWrote 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/bravew/trove/trove-visual-parity)<a href="https://agentmods.dev/skills/bravew/trove/trove-visual-parity"><img src="https://agentmods.dev/badge/skills/bravew/trove/trove-visual-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/bravew/trove/trove-visual-parity"><img src="https://agentmods.dev/badge/skills/bravew/trove/trove-visual-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 | $0.00073 | $0.00488 |
| Opus 5 | $0.00036 | $0.00244 |
| Sonnet 5 | $0.00015 | $0.00098 |
| Haiku 4.5 | $0.00007 | $0.00049 |
Grade A, and why
trove-visual-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 9d 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
Trove · v2026.7.4
Session Init
This skill ships Trove conventions. Prefer existing project patterns over generic best practices when they conflict.
trove-visual-parity
Prove two implementations render the same, by image diff — not by eyeballing. The baseline is the spec; the new implementation moves to meet it.
Workflow
- Establish the baseline first (blocking). Capture the reference rendering with Playwright
toHaveScreenshot(). Generate baselines in CI, not locally — local renders (fonts, DPI) drift from CI and create false diffs. - Migrate shared primitives first. Tokens, base components, and shared styles before the components that compose them.
- One component at a time. Migrate, then diff against its baseline. Parallel components go in separate worktrees (
trove-worktree). - Verify by diff, within a tuned threshold. Use
toHaveScreenshot()withmaxDiffPixels/maxDiffPixelRatio/thresholdtuned to absorb anti-aliasing and font noise without hiding real regressions. It auto-retries until the page stabilizes. A diff above threshold from a real layout/spacing change is a fail. - One PR per component or small batch.
Run the visual suite in isolation
Tag visual tests (@visual) and run them as a dedicated stage, not inside the normal unit run — they need a consistent rendering environment.
The anti-tampering rule
When a diff exceeds threshold, fix the implementation to match the baseline. Never edit the baseline, mask the diffing region, or loosen maxDiffPixels to make a real regression pass. The baseline is the contract; raising the threshold to hide a regression defeats the whole exercise.
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.
- 9d ago First seen · 33 lines · 73 tokens per session scan A 60a16be0b19a
trove-visual-parity is a skill published in the GitHub repository bravew/trove (10 stars, last pushed 10d ago), licensed MIT. It adds 73 tokens to every session and 488 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.
Other skills, from other repositories
qa-test-planner
Generate comprehensive test plans, manual test cases, regression test suites, and bug reports for QA engineers. Includes Figma MCP integration for design validation.
design-qa
Internal prototype QA helper. Use only after a Product Design prototype, URL-to-code build, or image-to-code build has a source visual target and a rendered implementation to compare before handoff. Do not use for broad UX critique, design critique, product audits, or flow reviews; route those user-facing requests to…
health
Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability. Use when users ask in any language to audit Claude, Codex, Pi, agent instructions, MCP or hooks, verifier coverage, or AI-maintainability drift. Not for debugging application…
hunt
Finds root cause before applying fixes for errors, crashes, regressions, failing tests, broken behavior, and screenshot-reported defects. Use when users report in any language errors, crashes, broken behavior, regressions, failing tests, screenshot evidence, or something that used to work and now fails. Not for code…
chrome-cdp
Drive a headless Chrome over the Chrome DevTools Protocol (CDP) for browser QA — navigate, click, fill forms, read the DOM/accessibility tree, screenshot, and assert. Use whenever a task requires loading a web page and interacting with it like a user. Chrome is launched by a bash step (recipe below); this skill…
ui-craft-checks
Use this comprehensive gate for formal review, QA, launch handoff, exact-fidelity inspection, high-risk complex UI, or when the fast gate exposes a deeper craft problem. Ordinary single-screen work uses ui-design-executor and its bundled validator without loading this full matrix. Pair standalone artifacts with…