AIエージェント実践録AI・テクノロジー
The Complete Record of Building and Selling a SaaS in 10 Days
From design and implementation to payments and launch. Done solo with AI.
機械翻訳 / Machine-translated
2026年3月6日・3分で読める
From design and implementation to payments and launch. Done solo with AI.
機械翻訳 / Machine-translated
A full record of taking a SaaS product from concept → design → implementation → Stripe payments → launch in 10 days.
Tools used: Claude Code + Supabase + Next.js. Team size: just me.
Created the PRD by bouncing ideas off Claude. This part matters most.
Supabase schema design → migrations → RLS.
Lesson learned here: Spending two days on schema design was the right call. The cost of changing it later is 10x.
Next.js App Router + Tailwind CSS.
I delegated component work to Claude Code while adjusting the "feel" of the UI myself. AI can build features, but it can't design user emotion.
Implemented monthly subscriptions. Stripe + Webhook configuration handled via Supabase Edge Functions.
Deployed to Vercel. Announced on X.
Three paying users on day one.
Win through structure. That's all there is to it.
We're in an era where AI lets one person do almost anything — but the judgment of what to build is something only a human can make.