Uncodixfy: The Complete Guide to Fixing GPT's Bad UI Design Habits
GPT is surprisingly bad at UI design. If you ask it to generate interfaces long enough, you start noticing the same patterns: floating cards, oversized rounded corners, gradient-heavy dashboards, decorative labels everywhere, glass panels. After a while, you can recognize a "GPT UI" immediately. Uncodixfy exists to stop that. With 1,000+ stars in 2 days, this ruleset is becoming the go-to fix for AI-generated UIs.
What Is Uncodixfy?
uncodixify.md is a negative constraint ruleset — it doesn't try to teach GPT how to design. It tells GPT what not to do. Include it in your prompt or system instructions, and GPT stops falling back to its usual UI habits.
- Type: Prompt engineering ruleset (Markdown)
- Stars: 1,000+ ⭐ (in 2 days)
- Forks: 74
- Created: March 6, 2026
- By: cyxzdev
The Problem It Solves
Every AI coding agent — Codex, Claude Code, ChatGPT — generates the same bad UI patterns:
| Pattern | What GPT Does |
|---|---|
| Floating cards | Everything is a card with excessive shadows |
| Oversized corners | border-radius: 24px on everything |
| Gradient overload | Purple-to-blue gradients on every dashboard |
| Decorative labels | Labels that look pretty but add no information |
| Glass panels | Frosted glass effects where they don't belong |
| Generic layouts | Every page looks like a SaaS template |
These patterns are instantly recognizable as "GPT UI." Uncodixfy blocks them, pushing GPT toward more normal, human-designed interfaces.
How It Works
As a Prompt Include
Include uncodixify.md in your prompt or system instructions:
Include the contents of uncodixify.md when asking GPT to generate UI.
As an Agent Skill
Uncodixfy ships as a SKILL.md compatible with AI coding agents:
For OpenAI Codex
# Windows (PowerShell)
git clone https://github.com/cyxzdev/Uncodixfy.git "$HOME\.agents\skills\uncodixfy"
# macOS/Linux
git clone https://github.com/cyxzdev/Uncodixfy.git ~/.agents/skills/uncodixfy
Invoke with $uncodixfy.
For Claude Code
# Windows (PowerShell)
git clone https://github.com/cyxzdev/Uncodixfy.git "$HOME\.claude\skills\uncodixfy"
# macOS/Linux
git clone https://github.com/cyxzdev/Uncodixfy.git ~/.claude/skills/uncodixfy
Invoke with /uncodixfy.
Before vs After
| Before (Typical GPT UI) | After (Uncodixified) |
|---|---|
| Floating cards with heavy shadows | Clean, grounded layouts |
| Oversized rounded corners | Proportional border radius |
| Gradient-heavy dashboards | Clean, professional color usage |
| Decorative labels everywhere | Functional, meaningful labels |
| Glass panel effects | Clean backgrounds |
Uncodixfy vs Alternatives
Category: This is a prompt engineering tool for AI UI quality.
| Feature | Uncodixfy | Awesome ChatGPT Prompts | screenshot-to-code |
|---|---|---|---|
| Focus | Fix GPT UI design | General prompt collection | Screenshot → Code |
| Stars | 1K ⭐ (2 days!) | 150.7K ⭐ | 71.8K ⭐ |
| License | None specified | CC0 | MIT |
| Type | Negative constraint ruleset | Role-play prompts | Full application |
| UI-Specific | ✅ 100% UI-focused | ❌ General purpose | ✅ UI reproduction |
| Blocks Bad Patterns | ✅ Core design | ❌ | ❌ |
| Agent Skill | ✅ Codex + Claude Code | ❌ | ❌ |
| SKILL.md Format | ✅ | ❌ | ❌ |
| Requires Code | ❌ Just rules | ❌ Just prompts | ✅ Python + React |
| Self-Hosted | N/A | ✅ | ✅ |
| Input | System prompt rules | User prompts | Screenshots |
| Output | Better AI-generated UI | ChatGPT responses | HTML/Tailwind/React/Vue |
| New UI Generation | ✅ From scratch | ❌ | ❌ Reproduction only |
| Design Philosophy | Constraint-based | N/A | Pixel-matching |
When to choose Uncodixfy: You want GPT/Codex/Claude Code to generate UIs that don't look like GPT made them. A lightweight ruleset you include in your prompts — no code, no dependencies, no setup. Just better design output.
When to choose Awesome ChatGPT Prompts: You want a general-purpose prompt collection for all kinds of ChatGPT tasks — not specifically UI design.
When to choose screenshot-to-code: You want to reproduce an existing UI from a screenshot. You already have the design; you need the code. Different problem than generating a new UI from scratch.
Conclusion
Uncodixfy is brilliantly simple: one Markdown file that tells GPT what not to do. No framework, no dependencies, no complex setup — just a constraint ruleset that transforms AI-generated UIs from generic GPT templates into something that actually looks human-designed. The 1,000 stars in 2 days say it all: developers were waiting for this. Add it as a skill to Codex or Claude Code, and every UI you generate gets the Uncodixfy treatment.