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 giang6283623/minimal-vibe-coding-kit --skill visual-design-loopgit clone --depth 1 https://github.com/giang6283623/minimal-vibe-coding-kitWrote 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/giang6283623/minimal-vibe-coding-kit/visual-design-loop)<a href="https://agentmods.dev/skills/giang6283623/minimal-vibe-coding-kit/visual-design-loop"><img src="https://agentmods.dev/badge/skills/giang6283623/minimal-vibe-coding-kit/visual-design-loop/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/giang6283623/minimal-vibe-coding-kit/visual-design-loop"><img src="https://agentmods.dev/badge/skills/giang6283623/minimal-vibe-coding-kit/visual-design-loop.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 | $0.00071 | $0.00951 |
| Opus 5 | $0.00036 | $0.00476 |
| Sonnet 5 | $0.00014 | $0.00190 |
| Haiku 4.5 | $0.00007 | $0.00095 |
Grade A, and why
visual-design-loop 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 11d 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 — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Visual Design Loop
Use this skill to improve a visible UI through controlled render-review-fix loops. Keep the brief and existing project conventions as the source of truth; do not add new product requirements just because a screen could be enhanced.
Gate
Do not start loops by default. Score the need first, 0-2 per question:
- Did the change alter a user-visible surface?
- Does the outcome depend on subjective visual judgment (layout, typography, color)?
- Could a visual regression reach end users unnoticed by existing tests?
- Score 0-2: skip the loop; rely on the repo validation command.
- Score 3-4: one screenshot check with at most one targeted fix; no loop.
- Score 5-6: propose the loop with its budget and estimated cost, then wait for explicit user approval before the first loop.
Report the score and decision in one line, for example: "visual gate 5/6: proposing a 3-loop run, awaiting approval".
Contract
Before editing, resolve and state:
- Goal.
- Target surface: route, page, component, flow, or supplied screenshot.
- Source of truth: current brief plus repo instructions, design system, nearby UI, and
backbone.ymlwhen present. - Render method: local URL, app command, Storybook story, preview command, static file, or supplied screenshot.
- Screenshot method: browser screenshot, Playwright, in-app browser, provided image, or equivalent.
- Editable paths.
- Protected paths.
- Budget: default 3 loops.
- Timeout: default 10 minutes per loop.
- Log path:
/tmp/design-{project_slug}.md.
If render or screenshot capture is missing and cannot be inferred safely, ask for the missing command, URL, or image before editing.
Baseline
- Render the target surface.
- Capture or inspect the baseline screenshot.
- Review visible issues only; do not invent findings.
- Create or update
/tmp/design-{project_slug}.md. - Log the baseline screenshot, visual score, main issues, and any render constraints.
Derive project_slug from backbone.yml project.name when available; otherwise use the repository directory name.
What ships with it
1 file 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.
- 11d ago First seen · 118 lines · 71 tokens per session scan A 7cfc5e230b20
visual-design-loop is a skill published in the GitHub repository giang6283623/minimal-vibe-coding-kit (21 stars, last pushed 13d ago), licensed MIT. It adds 71 tokens to every session and 951 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 2026-08-30.
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