# Add Authentication to Next.js App

> Add authentication to a Next.js application

- Source: https://doutorai.pt/en/components/commands__davepoon-subagents__commands-add-auth
- Type: Commands
- Category: General
- Downloads: 0
- Site: Doutor AI (https://doutorai.pt/en) - AI tools for small businesses

An open-source community component, curated and adapted by Doutor AI.

## What it does and how to use it

A **/slash command**, ready to use, that runs a general workflow in a single step.

1. Install the command (command above).
2. In Claude Code, type "/" followed by the command name.
3. Follow the instructions the command asks for and let it run.

## Install (Claude Code)

```bash
mkdir -p .claude/commands && curl -fsSL https://doutorai.pt/data/lib/commands__davepoon-subagents__commands-add-auth.md -o .claude/commands/davepoon-subagents__commands-add-auth.md
```

Paste this command into the terminal, in your project folder, and the component installs automatically.

## Content

```
---
description: Add authentication to a Next.js application
allowed-tools:
  - Read
  - Write
  - Glob
  - Grep
  - Bash
  - Skill
  - AskUserQuestion
---

# Add Authentication to Next.js App

You are adding authentication to a Next.js application using Auth.js (NextAuth.js v5).

## Workflow

### Step 1: Assess Current State

1. Check if authentication already exists:
   - Look for `auth.ts` or `auth.config.ts`
   - Check for `next-auth` in `package.json`
   - Look for existing middleware

2. Identify database setup:
   - Check for Prisma schema
   - Identify existing User model

### Step 2: 

- 🔒 Full content on the Pro plan (€7.99/month) -
```

## Related components

- [act](https://doutorai.pt/en/components/commands__act): Execute GitHub Actions locally using act
- [add-authentication-system](https://doutorai.pt/en/components/commands__add-authentication-system): Implement secure user authentication system with chosen method and security best practices
- [add-changelog](https://doutorai.pt/en/components/commands__add-changelog): Generate and maintain project changelog with Keep a Changelog format
- [add-mutation-testing](https://doutorai.pt/en/components/commands__add-mutation-testing): Setup comprehensive mutation testing with framework selection and CI integration
- [add-package](https://doutorai.pt/en/components/commands__add-package): Add and configure new package to workspace with proper structure and dependencies
- [add-performance-monitoring](https://doutorai.pt/en/components/commands__add-performance-monitoring): Setup comprehensive application performance monitoring with metrics, alerting, and observability

## Save hours every week with AI, no hassle

**Doutor AI** gives you 1,859 ready-to-copy AI prompts, by industry and in plain English - plus a complete technical library for those who want to go further. [See plans →](https://doutorai.pt/en/pricing)

---
Content by Doutor AI (https://doutorai.pt/en). When quoting, please cite the source: https://doutorai.pt/en/components/commands__davepoon-subagents__commands-add-auth