Build a SaaS in a Weekend with Claude Code
The flagship guide. Take a business idea and build a complete, deployable SaaS product in a weekend using Claude Code. Authentication, database, UI, and billing included.
- The weekend SaaS challenge: what you will build
- Friday evening: project setup and architecture (2 hours)
- Saturday morning: core feature (3 hours)
- Saturday afternoon: authentication and user management (2 hours)
- Saturday evening: polish and edge cases (2 hours)
- Sunday morning: payments with Stripe (3 hours)
- Sunday afternoon: landing page and email (2 hours)
- Sunday evening: deploy to production (1 hour)
- Post-launch: the first 30 days
The weekend SaaS challenge: what you will build
By Sunday evening, you will have a SaaS product deployed to production with: user authentication (signup, login, logout, password reset), a database storing user data and application state, a core feature that solves a real problem, a pricing page with free and paid tiers, Stripe integration for payments, a settings page for account management, transactional emails for signup and billing events, and a landing page to acquire users. This is not a toy. This is a real product that real people can sign up for and pay for. The specific SaaS you build depends on your idea — this guide uses a generic project tracker as the example, but every step applies to any SaaS. The key constraint: you will not write code by hand. Every file, every function, every component is generated by Claude Code based on your instructions. Your job is product direction — Claude Code handles implementation.
Friday evening: project setup and architecture (2 hours)
Start by creating your project and writing a comprehensive CLAUDE.md. This is the most important step — a great CLAUDE.md means consistent, high-quality output for the rest of the weekend. Ask Claude Code: "Create a new Next.js 14 project with TypeScript, Tailwind CSS, and App Router. Set up: Drizzle ORM with PostgreSQL (using Neon for serverless), NextAuth.js for authentication with email/password and Google OAuth, and the following folder structure: app/(marketing) for public pages, app/(app) for authenticated pages, components/ for shared UI, lib/ for utilities, and db/ for database schema and migrations." Once scaffolded, say: "Create the database schema for a [your product] application. I need tables for users, teams, and [your core data model]. Include created_at, updated_at, and soft delete columns. Write the initial migration." Run the migration against your Neon database. Commit. You have a project with auth, database, and a clean architecture.
Saturday morning: core feature (3 hours)
This is where you build the thing that makes your SaaS valuable. For a project tracker, the core feature is creating, viewing, and managing projects with tasks. For your product, substitute the equivalent. Ask Claude Code: "Build the main application interface. After login, the user should see a dashboard showing their [core data]. They should be able to create new [items], view details, edit, and delete. Use a card-based layout with status indicators. Add a sidebar for navigation between different views (all items, active, completed, archived). Make it fast — use optimistic updates and loading skeletons." This is a large prompt but Claude Code handles it well because your CLAUDE.md provides the architectural context. Review the output carefully. Navigate every page. Click every button. Report issues: "The delete button does not show a confirmation dialog. The sidebar does not highlight the active page. The loading skeleton is missing on the detail view." Fix them iteratively. By lunch, your core feature should be fully functional.
Saturday afternoon: authentication and user management (2 hours)
Authentication is already scaffolded from Friday. Now wire it up. Ask Claude Code: "Build the authentication pages: /login with email/password and Google OAuth, /register with name, email, and password, /forgot-password that sends a reset email, and /reset-password that accepts the token. After login, redirect to the dashboard. Protect all /app routes — redirect unauthenticated users to /login. Add a user settings page at /app/settings where users can update their name, email, and password." Test every flow: register, logout, login, forgot password, reset, login again, update settings. Authentication is the most critical part — if it is broken, nothing else matters. Ask Claude Code to add rate limiting on the login and registration endpoints to prevent abuse.
Saturday evening: polish and edge cases (2 hours)
Spend the evening on the details that separate amateur projects from professional ones. Ask Claude Code: "Add the following polish: empty states for every list (when a user has no projects, show a helpful illustration and a create button). Error boundaries that catch crashes and show a friendly error page. Toast notifications for all actions (created, updated, deleted). Keyboard shortcuts (n for new, / for search, escape to close modals). Mobile-responsive layout — test at 375px, 768px, and 1440px widths." Each of these individually is small but collectively they make the product feel professional. Also add: "Write a seed script that creates a demo user with sample data so I can show the product to people without them having to create their own data."
Sunday morning: payments with Stripe (3 hours)
Time to make money. Set up a Stripe account if you do not have one. Get your API keys (use test mode). Ask Claude Code: "Integrate Stripe for payments. Create two plans: Free (limited to 3 projects) and Pro at $12/month (unlimited projects). Build a pricing page at /pricing that shows both plans. Add a checkout flow: when a free user hits the 3-project limit, show an upgrade prompt. Clicking upgrade creates a Stripe Checkout session and redirects to Stripe. After payment, a webhook updates the user's plan in the database. Add a billing page at /app/billing showing the current plan, next billing date, and a button to manage the subscription (Stripe Customer Portal). Handle subscription cancellation and reactivation." Test the full flow using Stripe's test card (4242 4242 4242 4242). Create a free account, hit the project limit, upgrade, verify the plan changes, cancel, verify downgrade.
Sunday afternoon: landing page and email (2 hours)
Your product needs a front door. Ask Claude Code: "Build a landing page at / with: hero section (headline, subheadline, CTA), feature highlights (3 key features with icons), pricing section (matching the /pricing page), testimonials section (use placeholder quotes), and a footer. The design should be clean and professional — use the same design system as the app. The CTA buttons should link to /register." For email: "Set up Resend for transactional emails. Send a welcome email when a user registers. Send a receipt email when a user subscribes. Send a cancellation confirmation when a user cancels. Use React Email for templates with the product branding."
Sunday evening: deploy to production (1 hour)
The final push. Ask Claude Code: "Prepare this project for production deployment on Vercel. Create a checklist of all environment variables needed. Add proper error logging. Set the Stripe webhook endpoint to the production URL. Add a health check API route. Update all hardcoded localhost URLs to use the NEXT_PUBLIC_APP_URL environment variable." Push to GitHub. Connect to Vercel. Set all environment variables: database URL, NextAuth secret, Stripe keys, Resend API key. Deploy. Test the production site end-to-end: register, create a project, upgrade to Pro via Stripe (in test mode), check email delivery. Switch Stripe to live mode when you are ready for real payments. You just built and deployed a SaaS product in a weekend.
Post-launch: the first 30 days
Shipping is the beginning, not the end. In the first 30 days, focus on: getting 10 real users (not friends and family — real people who have the problem your product solves), collecting feedback (add a feedback widget or a simple email prompt), fixing the bugs they find (they will find bugs you missed), and watching usage patterns (which features do they use? which do they ignore?). Ask Claude Code to add analytics: "Integrate PostHog for product analytics. Track: page views, feature usage (create, edit, delete for each entity), upgrade conversions, and session duration. Create a simple admin dashboard at /admin that shows these metrics." The data from your first 10 users determines what you build next. Do not guess — measure.
AI Product Development
This guide is hands-on and practical. The full curriculum covers the conceptual foundations in depth with structured lessons and quizzes.
Go to lesson