SaaS Starter Kit with Auth, Billing & Dashboard

What's Inside the SaaS Kit

This isn't a landing page template. It's a working SaaS application with every feature you'd spend months building from scratch.

Authentication and User Management

Registration with email verification, login with rate limiting, password reset flow, OAuth with Google and GitHub, remember-me tokens, and session management. The user model supports roles (owner, admin, member) for team-based SaaS products. All auth pages are pre-built with responsive forms.

Stripe Subscription Billing

Pricing page with plan comparison, checkout with Stripe Checkout or embedded elements, webhook handler for subscription events (created, updated, cancelled, past_due), customer portal for plan changes, invoice history, and usage-based billing support. The billing logic handles edge cases like trial expiration, failed payments, and proration.

Multi-Tenant Architecture

Each organization gets isolated data. The middleware automatically scopes database queries to the current tenant. New users can create an organization or accept an invite to join an existing one. The data model supports both single-tenant (one user = one account) and multi-tenant (teams with multiple members) patterns.

Admin Dashboard

Track MRR, annual run rate, churn rate, trial conversion rate, and active subscriptions. Data tables show all users, organizations, and subscriptions with search, sort, and export. The dashboard uses real-time data from your Stripe account via the API. Charts update daily.

Customizing the SaaS Kit

The kit is designed around a modular architecture. Your business logic goes into feature modules that plug into the existing auth and billing infrastructure. Here's the typical customization workflow:

Add Your Core Feature

Create a new module for your product's main feature. The kit provides the data model patterns, API endpoint structure, and frontend component patterns. You follow the same conventions used by the auth and billing modules. A typical core feature (CRUD with search, filters, and permissions) takes 1-2 weeks to build on top of the kit.

Customize the Pricing

Update the plan definitions in the config file. The pricing page, checkout flow, and feature gating all read from this config. You define what features each plan gets access to, and the middleware enforces it automatically. No need to touch the billing code.

Deploy to Production

The kit includes deployment configs for Vercel (frontend), Railway (backend), and Supabase or Neon (database). Set your environment variables, push to GitHub, and your SaaS is live. SSL, CDN, and auto-scaling are handled by the platform. Total deployment time: under 30 minutes.