What is Proof?
Proof is a free, open source skill for Claude Code and Codex that designs product website pages from a short brief. It draws on patterns from 400+ real product pages and suits developers and founders.
Key facts
- Pricing
- Free
- Free plan
- Yes
- Category
- Website/App Builder
- Website
- https://proofdesign.dev/
- Listing updated
- Nov 11, 2026
Proof FAQ
What is Proof?
Proof is a free, open source skill for Claude Code and Codex that designs product website pages from a short brief. It draws on patterns from 400+ real product pages and suits developers and founders.
Is Proof free?
Yes. Proof lists a free plan. Pricing: Free.
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