Patch your

Not your sanity.

StackPatch is a CLI that installs opinionated, battle-tested features like Auth, Redis, Payments — directly into your existing Next.js app.

git:(main)x

npx stackpatch@latest

View stackpatch package on npm View stackpatch repository on GitHub

Get Started

StackPatch

The easy solution to feature integration

StackPatch has all the features you need to add production-ready functionality to your existing app without restructuring or boilerplate bloat.

Auto-detection

Instantly scans your project to identify frameworks, folder structures, and key configuration files enabling StackPatch to apply changes safely with zero manual setup, no matter how customized your codebase is.

Scanning project structure

Found app/ directory
Detected at 14:09
Detected Next.js 16
Detected at 14:10
Found existing layout.tsx
Detected at 14:11
Scanning dependencies
Detected at 14:12

Smart code injection

Injects code only where needed, respecting your existing structure and conventions.

app/layout.tsx
import { AuthWrapper } from "@/components/auth-wrapper"

export default function RootLayout() {
    return (
        <AuthWrapper>{children}</AuthWrapper>
    )
}

File tree preview

See exactly what files will be added before applying the patch.

app
api
auth
route.ts
providers.ts

Zero configuration

Works out of the box. No config files, no setup required. Just add the patch and go.

$ npx stackpatch add auth
✓ No config needed
✓ Auto-detected framework
✓ Ready to use
Patch applied successfully

You own the code

All generated code lives in your repo. No magic, no black boxes, just clean, readable code.

Your Code
app/api/auth/route.ts

✓ Fully editable
✓ No dependencies

Workflow

Seamless Integration Workflow

StackPatch seamlessly integrates authentication into your Next.js app with zero configuration. Watch how it connects all the pieces together.

Next.js App
Better Auth
Auth Providers
Connected

app/layout.tsx
+ AuthWrapper
+ Toaster
app/api/auth/
+ [...all]/route.ts
lib/
+ auth.ts
+ protected-routes.ts
Login & Signup pages

Next.js App

Better Auth Authentication Configured

Reversible

Fully Reversible

Changed your mind? No problem. StackPatch tracks every change it makes, allowing you to safely revert any installation with a single command.

TerminalReset
$npx stackpatch add auth
⠋Detecting project structure...
✓ Copied app/auth/login/page.tsx
✓ Copied app/auth/signup/page.tsx
✓ Copied components/auth-button.tsx
✓ Copied components/protected-route.tsx
✓ Updated app/layout.tsx
✓ Created .stackpatch/manifest.json
✅ Patch setup complete!
$npx stackpatch revert
🔄 Reverting StackPatch installation
Patch: auth | Installed: 4/30/2026, 6:08:54 PM
Are you sure? (y/N): y
✓ Removed: app/auth/login/page.tsx
✓ Removed: app/auth/signup/page.tsx
✓ Removed: components/auth-button.tsx
✓ Removed: components/protected-route.tsx
All changes are tracked in `.stackpatch/manifest.json` for safe reversion