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 TheGoat395/Codex-Skills --skill visual-regression-labgit clone --depth 1 https://github.com/TheGoat395/Codex-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/thegoat395/codex-skills/visual-regression-lab)<a href="https://agentmods.dev/skills/thegoat395/codex-skills/visual-regression-lab"><img src="https://agentmods.dev/badge/skills/thegoat395/codex-skills/visual-regression-lab.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00015 | $0.00391 |
| Opus 5 | $0.00008 | $0.00196 |
| Sonnet 5 | $0.00003 | $0.00078 |
| Haiku 4.5 | $0.00002 | $0.00039 |
Grade A, and why
visual-regression-lab 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 2d 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
Visual Regression Lab
Use this skill to prove the site looks right in a browser, not just in code.
Required Checks
- Start or identify the local server.
- Open the relevant route in a browser or Playwright.
- Capture desktop and mobile screenshots.
- Check console errors, failed requests, layout overflow, missing media, and text clipping.
- Inspect first viewport composition, hierarchy, spacing, typography, image crops, and CTA visibility.
- Test key interactions: nav, forms, menus, tabs, accordions, hover states, focus states, and modals.
- For animation-heavy work, test reduced-motion behavior and watch for jank.
- For canvas/WebGL/video, verify nonblank rendered pixels and stable framing.
- Do one second-pass polish edit when the result feels generic or cramped.
Read baseline contract. When a project has Playwright installed, run node "<skill-root>/scripts/capture-settled-baseline.mjs" <url> <output-dir> to capture settled desktop/mobile/reduced-motion states and a machine-readable inspection manifest.
When native full-page capture is blank, sparse, incomplete, or inconsistent with real scrolling, read stitched full-page capture and run node "<skill-root>/scripts/capture-stitched-full-page.mjs" --url <url> --output <image>. Treat the stitched image as evidence only after visual inspection.
Output
Report:
- routes/viewports checked
- screenshots or saved paths when available
- issues found and fixed
- commands run
- anything not tested
Resolve <skill-root> to this skill folder's actual absolute location; preserve project-local module resolution for Node capture tools.
What ships with it
5 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.
- 2d ago Changed · +6 lines · -33 tokens per session f37c42210caa
- 5d ago First seen · 31 lines · 48 tokens per session scan A 0e5a917ee36e
visual-regression-lab is a skill published in the GitHub repository TheGoat395/Codex-Skills (122 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 391 once invoked, about $0.0001 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 2026-09-03.
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