Feature Specification Library
Battle-tested implementation guides for AI-native development. Each spec includes architecture diagrams, edge cases, and Claude Code-optimized prompts.
What is BuildSpec?
BuildSpec is a library of production-grade feature specifications designed for Claude Code and AI-assisted development. Each spec includes:
- ✓Comprehensive architecture - System design, data flow, tech stack recommendations
- ✓Edge case handling - Common pitfalls and how to avoid them
- ✓AI-optimized prompts - Copy-paste prompts for Claude Code implementation
- ✓Tech stack variations - Next.js, Remix, Prisma, Supabase, and more
File Upload System
Drag-drop, progress tracking, retry logic, cloud storage
6 tech stack variations →
Image Optimization System
Thumbnails, compression, lazy loading, responsive images
5 tech stack variations →
Invoice & Receipt Generation
PDF invoices + tax compliance + branded receipts + email delivery
6 tech stack variations →
Payment Processing Flow
Stripe checkout + payment intents + receipt generation
6 tech stack variations →
Payment Webhook System
Reliable webhook handling + retry logic + event deduplication
5 tech stack variations →
Shopping Cart System
Guest checkout + localStorage + magic link auth + cart migration
6 tech stack variations →
Stripe Subscription Management
Recurring billing + plan changes + prorations + cancellations
7 tech stack variations →
User Authentication System
Email/password + OAuth + magic links + session management
5 tech stack variations →
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