proof: A product design skill for Claude Code & Codex

by senlindesign · Claude Skill · ★ 4

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Featured in: AI Design Tools

Security audit verdict: SAFE · quality 67/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-skillsclaude-codeclaude-skillcodexdesigndesign-systemdesign-tokensfrontendlanding-pagemobbin

Quick Facts

Stars4
Forks1
LanguagePython
CategoryClaude Skill
LicenseMIT
Quality Score67/100
Last Updated2026-10-21
Created2026-10-03
Platformsbrowser, claude-code, codex, python
Est. Tokens~16k

About proof

Proof — a product design skill for Claude Code & Codex. Product pages that look shipped, not generated, learned from 400+ real product pages: 8 page types, 10 sections, and 4 visual styles (Minimal, Business, Colorful, Editorial) in light and dark.

proof alternative? Top 6 similar tools

Looking for a proof alternative? If you're comparing proof with other claude skill tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

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  • claude-design-auditor-skill by Ashutos1997 · ⭐ 93

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  • cinematic-ui by akseolabs-seo · ⭐ 89

    An agent skill that directs websites and apps the way films are made: cast a director, write a shot list, shoo

  • getdesign by MohtashamMurshid · ⭐ 50

    On-demand design systems from any URL. Five surfaces, one agent: web, API, CLI, TypeScript SDK, and a portable

  • typeui.sh by bergside · ⭐ 83

    Design system skills for agentic tools

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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