t3-oss/create-t3-app

create-t3-app is a command-line tool for scaffolding new full-stack web applications using TypeScript and Next.js. Running it generates a ready-to-use project with your choice of popular tools pre-configured and wired together, saving the time and error-prone work of integrating them by hand. The "T3 stack" refers to a particular combination of technologies: Next.js (a React-based framework for building web apps that handles both the browser-side interface and server-side logic), TypeScript (a version of JavaScript that adds type checking to catch errors before runtime), and tRPC (a library for calling server-side functions from the browser with full type safety, meaning the editor can warn you if you pass the wrong kind of data across that boundary). The stack also typically includes Prisma for database access and NextAuth for authentication. The tool presents a short interactive prompt where you select which of these optional pieces you want included, then generates a project folder with everything configured and connected. The result is a starting point where TypeScript types flow from the database schema through the server code all the way to the browser components, reducing whole categories of bugs. This is aimed at developers who want to build a web application with modern tooling and don't want to spend days configuring integrations before writing any application code. It runs via npx or another Node.js package runner, requires no global installation, and produces TypeScript code.