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168+ Principles LibraryResearch-backed UX/UI guidelines with citationsAI Design ValidatorValidate AI designs with research-backed principlesAI Prompts600+ research-backed prompts with citationsFlow ChecklistsPre-flight & post-flight validation for 5 flowsUX Smells & FixesDiagnose interface problems in 2-5 minutes
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Part 1FoundationsPart 2Core PrinciplesPart 3Design SystemsPart 4Interface PatternsPart 5Specialized DomainsPart 6Human-Centered
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UX/UI Tools

Research-backed validation for Vibe Coding. AI prompts grounded in cognitive science and 168 proven UX principles. Optimized for Cursor, v0, Lovable, Claude Code, and any AI tool.

A complete scientific validation system: use the AI Prompts Library to generate research-backed designs, validate AI output with the Design Validator, and reference Flow Checklists before shipping.

Start Validating

AI Prompts Library

600+ research-backed prompts optimized for Cursor, v0, and Claude. Each prompt is mapped to proven UX principles with academic citations.

  • Cursor, v0, Lovable, Claude
  • Backed by 168 research principles
  • Scientific quality assurance
Explore AI Prompts

AI Design Validator

Validate AI-generated designs against research-backed principles. Get matched principles with academic citations and prompts for Cursor & V0.

  • Validate AI interface output
  • Scientific UX review
  • Checklists & Cursor/V0 prompts
Validate My AI Output

Flow Checklists

Scientific pre-flight questions and post-flight checks for common UI flows. Linked to UX principles and AI validation prompts.

  • SaaS, E-commerce, Dashboards
  • Pre-flight + Post-flight checks
  • Validate against UX Smells
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UX Smells

Common UX anti-patterns that hurt usability. Each smell includes symptoms to spot, refactoring recipes to fix, and AI prompts for validation.

  • 8 documented anti-patterns
  • Step-by-step refactoring recipes
  • AI prompts for each smell
Explore Smells

168+ UX/UI Principles

The complete research-backed framework for building better interfaces. Your foundation for AI-assisted design validation.

  • Academic citations from peer-reviewed research
  • Scientific authority for design decisions
  • 600+ AI prompts mapped to principles
Browse Principles

For Developers

Integrate UX principles directly into your workflow. REST API for custom integrations or MCP Server for Claude Code and Claude Desktop.

  • REST API with 1,000 req/hour
  • MCP Server for Claude Code
  • Developer Bundle saves $9
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How to Use These Tools Together

Each tool covers a different phase of AI-assisted design. Use them in sequence for a complete validation workflow from first prompt to launch.

1

Generate with AI Prompts

Start every design session with a research-backed prompt. The AI Prompts Library maps 600+ prompts to specific UX principles, giving your AI tool a scientific foundation from the first message.

2

Validate the output

After your AI generates a design, run it through the AI Design Validator. Answer 6 questions about your project type and get matched UX principles with audit checklists and academic citations.

3

Check for anti-patterns

Use UX Smells to scan for the 8 most common interface mistakes. Each smell includes symptoms to recognize, a step-by-step refactoring recipe, and ready-to-paste prompts for Cursor or V0.

4

Run the pre-ship checklist

Before you launch, open Flow Checklists. Five flows covered: onboarding, forms, pricing pages, dashboards, and empty states. Each check is linked to specific UX principles.

5

Build deeper understanding

When a validation result references a principle you want to fully understand, go to the Principles Library. All 168 principles include the research basis, real-world examples, and role-specific guidance for designers, developers, and PMs.

Every tool in this system is free. The Principles Library — 168 principles, 600+ AI prompts, and 2,098+ academic citations — is available with a Principles Library subscription.