SaaS Kit
Get Started Free
Next.js 16 + TypeScript + MongoDB Boilerplate

Ship your SaaS in days, not months

A production-ready foundation with custom JWT token rotation, serverless MongoDB pooling, Edge RBAC, and Stripe billing stubs. No vendor lock-in.

Get Started Free Live Demo Sign In
Next.js 16
React 19
TypeScript
MongoDB & Mongoose
Custom JWT Auth
Stripe Billing Stub
Tailwind CSS
https://app.your-saas.com/dashboard
Session Active
Active Subscriptions
$14,280

↑ 18.2% from last month

MongoDB Pool Latency
12 ms

Global cached client

Auth Token Lifecycle
15m / 7d

Automated rotation

Architecture & Features

Everything required to launch a high-scale SaaS

Engineered with clean architectural separation: models, cryptographic tokens, serverless caching, and edge guards.

JWT Token Rotation & Theft Guard

15-minute access tokens paired with 7-day refresh tokens stored in MongoDB. Automatic invalidation on reuse attempts.

// [SECURITY]: Select: false on password hash prevents accidental leakage

Serverless MongoDB Pooling

Globally cached connection client prevents socket exhaustion across warm Vercel/Lambda serverless functions.

// [SERVERLESS]: Persists connection promise on global.mongooseCache

Edge RBAC & Route Middleware

Single-digit millisecond route validation powered by `jose` WebCrypto API at the network perimeter.

// [EDGE]: WebCrypto API used for zero-latency token verification

Stripe Billing & Sandbox Stub

Full checkout session creation and HMAC webhook validation, with zero-friction development stub fallback.

// [STUB]: Mock checkout triggers without live Stripe API keys

Next-Themes Dark & Light Mode

HSL CSS variable architecture with zero-flicker transitions and automatic system theme detection.

// [CUSTOMIZE]: Modify raw HSL tokens in src/app/globals.css

Strict Types & Standardized JSON

Zod v4 payload validation, RFC-style `ApiError` envelopes, and strict TypeScript mode (0 errors).

// [NOTE]: Uniform { success, data, error } response wrappers
Sequence & Security

Cryptographic Token Flow & Edge Architecture

A high-level view of stateless 15-minute access tokens, silent 7-day refresh rotation, and globally cached MongoDB connection pooling.

Next.js 16 + MongoDB + JWT Architecture Diagram
1. Edge Perimeter (0-5ms)

V8 WebCrypto inspects access token before hitting serverless containers.

2. Silent Rotation

Rotating refresh tokens stored in MongoDB with automated TTL indexes.

3. Serverless Pooling

Cached client on global avoids connection spikes across warm invokes.

Simple Pricing

Transparent, scalable pricing

Choose the tier that matches your development and deployment scale.

Free Sandbox Tier

Ideal for local development and prototyping.

$0 / month
  • Custom JWT Authentication
  • MongoDB Database Connection Pooling
  • Up to 5 active API test projects
  • Community GitHub Support
Get Started Free
MOST POPULAR

Pro Builder Tier

Full commercial features with Stripe billing integration.

$19 / month
  • Everything in Free Tier
  • Stripe Checkout & Webhook Sync
  • Unlimited Projects & API Requests
  • Role-Based Access Control (Admin Portal)
  • Priority Technical Support
Upgrade to Pro
Questions & Answers

Frequently Asked Questions

Everything you need to know about the architecture, security, and setup.

Ready to ship your next product?

Clone the repository, configure your `.env.local`, and run `npm run dev`.

Create Free Account