Build a SaaS AI Agent w/ Tools Next.js 15, React, Better Auth, TestSprite, Stripe | Full Course
Learn to Build, Test, and Deploy a Real AI SaaS Agent
Get the complete source code and build along.
⚠️A commercial license is required for SaaS, client work, or commercial apps.
About this course
In this video, you’ll learn how to build Wave AI — a full-stack second-brain AI agent from scratch.
You’ll learn how to design and implement an AI agent that can search the web, extract and summarize content from URLs, and chain tools together to handle complex tasks.
We’ll also cover authentication with BetterAuth, subscription billing with Stripe, AI testing with TestSprite, and deployment to Vercel.
On the frontend, you’ll build a modern, mobile-responsive interface using Next.js 15, React 19, Tailwind CSS v4, and Shadcn/ui, following real-world production patterns.
By the end of this video, you’ll have a fully deployed, production-ready SaaS AI agent that’s easy to extend and customize.
🔗 Resources
🧪 Try TestSprite → https://dub.sh/try-testsprite
🎥 Part 2 (Billing, Testing with TestSprite & Deployment):
https://www.youtube.com/watch?v=TEX6vfMVxug
🗝️ Key Features
🔐 Authentication with BetterAuth
⚡ AI-powered second-brain agent
🔍 Extract and summarize content from URLs
🌍 Built-in web search tool
📝 Create & Find tools
🛠️ Tool chaining for advanced workflows
🧪 AI testing with TestSprite
🧠 Integrations with Claude, Grok & other models
💳 Stripe subscription billing
📱 Mobile-responsive UI
🌐 Next.js 15 + React 19
🎨 Tailwind CSS v4 + Shadcn/ui
🚀 Deployment to Vercel
Use this codebase for SaaS,client work