Build NestJS Auth with brkpt-auth in 15 Minutes

This article guides developers through building an MVP authentication system for NestJS projects using brkpt-auth. The tool is designed to solve the common issue where custom authentication code accumulates unnecessary complexity as real requirements grow. It installs full source code directly into your project and structures it around interfaces and adapters, keeping database and token logic completely separate from the core auth logic.

The walkthrough is written for NestJS v11 (using a default CommonJS project created via nest new) and Prisma 7.10.0. It utilizes class-validator for request validation because it integrates seamlessly with @Body() without requiring custom request pipes, unlike alternative validation libraries such as Zod.

To get started, initialize a new project using nest new my-app, install the brkpt CLI, along with essential packages like @nestjs/config, @nestjs/event-emitter, and cookie-parser. Running brkpt auth init installs the core features and prints a checklist of any remaining dependencies.

Stock photo for illustration only, not from the actual event

For data persistence, the project relies on a PostgreSQL database. You must configure the DATABASE_URL connection string inside your .env file, install Prisma version 7.10.0 along with @prisma/adapter-pg and pg, and execute npx prisma@7.10.0 init to set up the user schema.