explaingit

t3-oss/create-t3-app

★ 28,932TypeScriptAudience · developerComplexity · 2/5MaintainedLicenseSetup · easy

TLDR

A command-line tool that scaffolds a full-stack TypeScript web app with Next.js, tRPC, Prisma, and NextAuth pre-configured and wired together.

Mindmap

mindmap
  root((create-t3-app))
    What it does
      Scaffolds projects
      Configures tools
      Connects integrations
    Tech Stack
      Next.js
      TypeScript
      tRPC
      Prisma
      NextAuth
    Use Cases
      Full-stack web apps
      Type-safe APIs
      Database-backed sites
    Key Benefits
      Saves setup time
      Type safety end-to-end
      Production-ready starter

Things people build with this

USE CASE 1

Build a full-stack web application with TypeScript type safety from database to browser in minutes instead of days.

USE CASE 2

Create a SaaS product with user authentication, database, and type-safe API endpoints already wired together.

USE CASE 3

Start a new Next.js project without manually configuring Prisma, tRPC, and NextAuth integrations.

USE CASE 4

Scaffold a web app where TypeScript catches data-type mismatches between server and client code before runtime.

Tech stack

TypeScriptNext.jstRPCPrismaNextAuthReactNode.js

Getting it running

Difficulty · easy Time to first run · 5min
Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

In plain English

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.

Copy-paste prompts

Prompt 1
I want to create a new full-stack web app using create-t3-app. Walk me through the interactive setup and explain what each option (Prisma, NextAuth, tRPC) adds to my project.
Prompt 2
Show me how to use tRPC in a create-t3-app project to call a server function from a React component with full type safety.
Prompt 3
I just ran create-t3-app and selected Prisma and NextAuth. How do I define a database schema and wire it to my API routes?
Prompt 4
How does create-t3-app ensure TypeScript types flow from my Prisma schema through tRPC to my frontend components?
Open on GitHub → Explain another repo

Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.