7-Day SaaS Build Challenge
Build a testable SaaS prototype in 7 days
You are going to build a landing page copy grader prototype — an AI tool that grades a founder's headline, subheadline, CTA, and feature bullets with honest scores and specific rewrites. It has auth, test billing, history, and public-safe share links. By Day 7 you will have a review plan, not a guarantee that it is ready for real users.
What you need before Day 1
Claude Code installed, a free GitHub account, a free Vercel account, and a free Supabase account. No prior SaaS experience needed — every step is written for non-developers.
Day 1 — Design the product and write the grading prompt
45 min
Day 2 — Build the input form and deploy a review version
45–60 min
Day 3 — Wire up the Claude API and display graded results
45–60 min
Day 4 — Add Supabase auth and limit free usage to 3 grades
60–90 min
Day 5 — Add Stripe test billing and webhook checks
60–90 min
Day 6 — Build results history and public-safe share links
45–60 min
Day 7 — Review the prototype and prepare next steps
60–90 min
What you will have by Day 7
- A testable AI SaaS prototype at a review URL
- Claude API wired up to grade landing page copy with honest scores
- Supabase user accounts with a 3-grade free tier
- A Stripe test checkout with provider-side and app-side verification tasks
- Grade history and public-safe result links using sample/test data
- A marketing landing page and a review plan
- A documented list of unknowns before any real users or payments