Overview

Building an AI SaaS App Builder: A Full-Stack Guide with Next.js 15, Inngest, E2B, and AI Agents is the ultimate hands-on playbook for developers, founders, and tech builders ready to create and scale real-world AI applications-without guesswork. Whether you're prototyping a GPT-powered chat assistant, deploying long-running background agents, or integrating billing and authentication, this book equips you to build a production-ready AI SaaS platform from the ground up. If you've ever wondered how to combine tools like Next.js 15, LangChain, vLLM, Clerk, Stripe, and Vercel into one seamless, high-performance stack-this guide shows you exactly how. Through battle-tested examples and working code, you'll wire agent backends, stream chat responses in real time, deploy with CI/CD, and plug into GitHub with AI code reviews. Every chapter delivers immediately usable techniques that reflect the latest industry trends and best practices. Author Nathan Steele is a respected AI systems architect and full-stack engineer known for breaking down complex architectures into concise, actionable steps. With a proven background in real-world SaaS development, Steele empowers readers to go beyond theory-into actual deployment and monetization. Whether you're an indie hacker, software engineer, or startup founder, this book puts you on the fast track to building your own AI-powered SaaS products, powered by LLMs, LangGraph, and cloud-native deployment pipelines. Everything is up to date, deeply practical, and ready for immediate implementation. What Makes This Book Stand Out Real-world AI agent architecture using PyTorch, Inngest, and LangChain Production-grade deployment with Vercel, CI/CD, and scalable edge APIs Integrated authentication, billing, and credits using Clerk and Stripe Hands-on labs to build anonymous demo modes, template marketplaces, and more Built-in support for streaming UIs, code generation, and long-running tasks Perfect for developers building AI apps, full-stack platforms, or SaaS MVPs Updated for Next.js 15, server actions, React server components, and beyond Technologies Covered: Next.js 15, LangChain, AI agents, Vercel, LangGraph, Clerk authentication, Stripe billing, PyTorch LLMs, vLLM, GitHub Actions, E2B sandboxing, streaming output, Inngest, TypeScript SaaS, ChatGPT integration, full-stack development, SaaS with AI, cloud-native apps, serverless architecture, OpenAI apps, template marketplace, AI startup architecture Table of Contents Highlights: Chapter 1: Project Overview and Tech Stack Chapter 2: Setting Up the Monorepo with Turborepo Chapter 3: Architecting Your SaaS Backend Chapter 4: Building AI Agents with LangGraph and Inngest Chapter 5: Connecting the Retriever-Generator Pipeline Chapter 6: Secure Sandbox Execution with E2B Chapter 7: Fine-Tuning LLMs with PEFT and LoRA Chapter 8: Building the Chatbot Interface and API Layer Chapter 9: Developing the Frontend UI with Shadcn/ui Chapter 10: Authentication and Billing with Clerk + Stripe Chapter 11: Customizing the Developer Experience Chapter 12: GitHub-Based AI Workflows with CodeRabbit Chapter 13: Deploying and Scaling with Vercel and CI/CD Chapter 14: Extending and Monetizing the Platform Appendices: Codebase Structure, Debugging, Glossary, Resources

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