How I built a white-label AI contract SaaS with Next.js 14, GPT-4o, and Stripe

I spent the last few months building ContractAI (aicontract.live) — a full AI contract automation platform. Here's what's under the hood.

Stack

• Next.js 14 App Router + TypeScript
• PostgreSQL + Prisma ORM
• NextAuth.js v5 (email + Google + GitHub)
• Stripe subscriptions
• 5 AI providers: OpenAI, Anthropic, Google Gemini, Groq, xAI Grok
• Resend for emails
• BullMQ + Redis for background jobs
• TipTap rich text editor
• pdf-lib + docx for exports

Key features I'm proud of

• AI risk analysis that scans contracts and returns severity levels with fix suggestions
• Canvas e-signatures with IP logging and full audit trail
• Bulk generation — upload CSV, generate 50 contracts simultaneously
• White-label support via environment variables Lessons learned
• Streaming AI responses makes the UX feel much faster
• Prisma + PostgreSQL on Neon is a solid free-tier combo
• BullMQ is great for bulk jobs but Redis adds infrastructure complexity

Live demo: aicontract.live