AI PRD Builder 🚀

An intelligent Product Requirements Document (PRD) generator that leverages Apple Intelligence and Foundation Models to create comprehensive, implementation-ready specifications from conversational interactions.

🎯 Overview

AI PRD Builder transforms conversational descriptions into structured, detailed Product Requirements Documents that any GenAI model can use for implementation. It prioritizes privacy by using Apple's on-device Foundation Models and Private Cloud Compute before falling back to external providers.

Key Features

• Privacy-First Architecture: Apple Foundation Models → Private Cloud Compute → External APIs (only when authorized)
• Multi-Model Integration: Seamlessly works with Apple Intelligence, Anthropic, OpenAI, and Gemini
• Intelligent Clarification System: Proactively identifies and collects missing requirements before generation
• Confidence-Based Generation: Evaluates input completeness and adjusts generation strategy accordingly
• Comprehensive PRD Generation: Creates complete specifications including:
  • Product overview and target users
  • User stories with acceptance criteria
  • Feature specifications with prioritization
  • API endpoints overview and usage patterns
  • Test specifications for the Apple ecosystem
  • Performance, security, and compatibility constraints
  • Validation criteria and technical roadmap
• Advanced Reasoning: Multi-pass generation with assumption validation
• Smart Deduplication: Prevents redundant questions using Levenshtein distance and Jaccard similarity

📋 Table of Contents

• Installation
• Quick Start
• Usage
• Architecture
• Contributing
• Development
• Testing
• License

🛠 Installation

Prerequisites

• macOS 16.0+ (Required for Apple Foundation Models)
• Xcode 16.0+ (Required for latest Swift features)
• Swift 5.9+
• Apple Silicon Mac (Required - M1/M2/M3 or later)

Clone the Repository

git clone https://github.com/cdeust/ai-prd-builder.git
cd ai-prd-builder

Build from Source

cd swift
swift build -c release

Install Binary

# Copy to local bin
cp .build/release/AppleIntelligenceOrchestrator /usr/local/bin/ai-orchestrator

# Make executable
chmod +x /usr/local/bin/ai-orchestrator

Environment Setup

Create a configuration file at ~/.ai-orchestrator/config.json:

{
  "providers": {
    "anthropic": {
      "apiKey": "YOUR_ANTHROPIC_API_KEY"
    },
    "openai": {
      "apiKey": "YOUR_OPENAI_API_KEY"
    },
    "gemini": {
      "apiKey": "YOUR_GEMINI_API_KEY"
    }
  },
  "privacy": {
    "allowExternal": false
  }
}

🚀 Quick Start

Basic Usage

# Start interactive mode
ai-orchestrator

# Generate a PRD
> prd
Describe what you want to build:
> I need a task management app with real-time collaboration...

# Chat with AI
> chat
Enter your message:
> How should I structure the authentication flow?

Command Line Options

# Allow external providers (when needed for complex tasks)
ai-orchestrator --allow-external

# Use specific provider
ai-orchestrator --provider anthropic

# Generate PRD directly
ai-orchestrator prd --input "Your product description"

💡 Usage

Available Commands

Command	Description
chat	Start a conversational AI session
prd	Generate a Product Requirements Document
session	Manage chat sessions
providers	List available AI providers
help	Show help information
exit	Quit the application

PRD Generation Process

Pre-Generation Analysis

1. Requirements Analysis: Evaluates input completeness and identifies gaps
2. Technical Stack Discovery: Analyzes technical requirements and platform needs
3. Clarification Collection: Intelligently collects missing information from users
4. Confidence Evaluation: Determines generation strategy based on confidence levels

Generation Phases

1. Product Overview: Goals, target users, and context
2. User Stories: Detailed stories with acceptance criteria
3. Features: Comprehensive feature list with prioritization
4. API Endpoints: Overview of required endpoints and usage patterns
5. Test Specifications: Test cases aligned with implementation
6. Constraints: Performance, security, and compatibility requirements
7. Validation Criteria: Success metrics and acceptance conditions
8. Technical Roadmap: Implementation timeline and CI/CD strategy

Confidence Thresholds

• <40%: Too vague - requires essential information collection
• 40-70%: Needs clarification for optimal results
• 70-85%: Good confidence, optional clarifications
• >85%: High confidence, proceed with generation

Privacy Modes

The tool operates in three privacy levels:

1. On-Device Only: Uses Apple Foundation Models exclusively
2. Private Cloud: Adds Apple Private Cloud Compute for complex tasks
3. Extended (with --allow-external): Enables external providers for maximum capability

🏗 Architecture

ai-prd-builder/
├── swift/
│   ├── Sources/
│   │   ├── Orchestration/         # Core orchestration and routing
│   │   ├── AIProvidersCore/       # Provider protocols and abstractions
│   │   ├── AIProviderImplementations/ # Concrete provider implementations
│   │   ├── PRDGenerator/          # PRD generation engine
│   │   │   └── Components/        # Modular generation components
│   │   ├── SessionManagement/     # Session and state management
│   │   ├── CLI/                   # Command-line interface
│   │   ├── DomainCore/           # Core domain models
│   │   ├── CommonModels/         # Shared data structures
│   │   └── ThinkingCore/         # Reasoning and analysis
│   └── Tests/
└── Documentation/

Key Components

Core Systems

• Orchestrator: Manages AI provider selection with privacy-first routing
• PRDGenerator: Coordinates the complete PRD generation pipeline
• SessionManager: Handles conversation sessions and state

PRD Generation Components

• RequirementsAnalyzer: Orchestrates pre-generation analysis and clarification
• ConfidenceEvaluator: Evaluates input quality and determines strategy
• ClarificationCollector: Manages user interaction and deduplication
• AnalysisOrchestrator: Coordinates AI-based requirement analysis
• SectionGenerator: Generates individual PRD sections
• ValidationHandler: Validates and improves generated content

Intelligence Features

• Smart Deduplication: Uses Levenshtein distance (70% threshold) and Jaccard similarity (60% threshold)
• Confidence Filtering: Filters assumptions and clarifications based on confidence levels
• Parallel Analysis: Concurrent requirements and stack analysis for performance

🤝 Contributing

We welcome contributions! Please see our Contributing Guidelines for details.

Quick Contribution Guide

1. Fork the repository
2. Create a feature branch

   git checkout -b feature/amazing-feature

3. Make your changes
4. Run tests

   swift test

5. Commit with descriptive message

   git commit -m "Add amazing feature"

6. Push to your fork

   git push origin feature/amazing-feature

7. Open a Pull Request

Code Style

• Follow Swift API Design Guidelines
• Use SwiftLint for code formatting
• Write unit tests for new features
• Update documentation as needed

🔧 Development

Project Structure

• AIBridge: Core orchestration and service management
• AIProviders: Integration with various AI providers
• AppleIntelligenceOrchestrator: CLI application and user interface
• ImplementationGenius: Code analysis and implementation verification
• ThinkingFramework: Advanced reasoning and decision-making

Building for Development

# Debug build
swift build

# Run tests
swift test

# Generate Xcode project
swift package generate-xcodeproj

Adding New Providers

1. Implement AIProvider protocol in AIProviderImplementations/
2. Add provider configuration to Configuration struct
3. Register in Orchestrator initialization
4. Add integration tests
5. Update documentation

Extending the Clarification System

1. Add new question categories to PRDConstants
2. Extend AnalysisOrchestrator for domain-specific analysis
3. Update confidence thresholds if needed
4. Test deduplication with new question patterns

🧪 Testing

Running Tests

# All tests
swift test

# Specific test
swift test --filter PRDGeneratorTests

# With coverage
swift test --enable-code-coverage

Test Categories

• Unit Tests: Core logic and utilities
• Integration Tests: Provider integrations
• Performance Tests: Response time and memory usage

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Apple for Foundation Models and Private Cloud Compute
• The Swift community for excellent tools and libraries
• Contributors and users who help improve this tool

📮 Support

• Issues: GitHub Issues
• Discussions: GitHub Discussions

⚠️ Important Notes

AI-Generated Content

PRDs generated by this tool require human review and validation. Always verify:

• API endpoint definitions against implementation requirements
• Test specifications with your testing framework
• Business logic against actual requirements
• Performance targets against realistic benchmarks
• Compliance with organizational standards

Privacy Considerations

• Apple Foundation Models process data on-device
• Private Cloud Compute ensures verifiable privacy
• External providers are only used with explicit permission
• No data is stored or logged without user consent

Clarification System

The intelligent clarification system:

• Never asks duplicate questions: Uses advanced similarity algorithms
• Respects confidence levels: Only asks when truly needed
• Prioritizes user experience: Batches questions by category
• Improves generation quality: Better input leads to better PRDs

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Built with ❤️ for the Apple Developer Community