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.
git clone --depth 1 https://github.com/chocpink123/prototype-previewer-skillWrote 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/rules/chocpink123/prototype-previewer-skill/prototype-previewer)<a href="https://agentmods.dev/rules/chocpink123/prototype-previewer-skill/prototype-previewer"><img src="https://agentmods.dev/badge/rules/chocpink123/prototype-previewer-skill/prototype-previewer/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/rules/chocpink123/prototype-previewer-skill/prototype-previewer"><img src="https://agentmods.dev/badge/rules/chocpink123/prototype-previewer-skill/prototype-previewer.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 | $0.00014 | $0.00184 |
| Opus 5.5 | $0.00006 | $0.00074 |
| Sonnet 5.5 | $0.00003 | $0.00037 |
| Haiku 4.5 | $0.00001 | $0.00018 |
Grade A, and why
prototype-previewer 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
When the user asks for a prototype previewer, clickable web prototype, multi-screen flow review page, or Figma-ready review shell:
- read
prototype-previewer/SKILL.md - read
prototype-previewer/references/previewer-spec.md - read
prototype-previewer/references/adaptation-checklist.md - prefer outputting
index.htmlandfigma_capture_index.html - use
prototype-previewer/assets/index.template.htmlandprototype-previewer/assets/figma_capture_index.template.htmlas the default starter pair when no shell exists - use English for both interface copy and review notes by default
- only switch languages when the prompt explicitly asks for a different language
- treat each independent page or state as its own
data-screen
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 · 14 tokens per session scan A daab155674f0
prototype-previewer is a cursor rule published in the GitHub repository chocpink123/prototype-previewer-skill (29 stars, last pushed 6mo ago), licensed MIT. It adds 14 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 2026-08-30.
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