BoxyHQ SaaS Starter Kit: A Complete Guide to Enterprise SaaS Architecture

1. Positioning
BoxyHQ SaaS Starter Kit is a complete enterprise-grade Next.js SaaS starting point.
Unlike lightweight MVP frameworks, it includes the complex features common in
production environments:
- Multi-factor authentication (MFA) and secure auth
- SAML SSO and identity-provider integration
- Fine-grained permission management (RBAC)
- Complete audit logging and compliance capabilities
- Webhook event system
- Internationalization (i18n)

This makes it useful both as learning material and directly in production.

2. Core features
- Enterprise authentication
- Email / password auth
- Multi-factor authentication (MFA)
- SAML 2.0 single sign-on
- Identity-provider (IdP) integration
- Team and permission management
- Role-based access control (RBAC)
- Fine-grained permission settings
- Invitations and permission inheritance
- Audit and logging
- Complete operation audit logs
- Event streams and webhooks
- Compliance report generation
- Internationalization and localization
- Multi-language support
- Time-zone handling
- Region-specific features
- Monitoring and observability
- Sentry integration
- Error tracking
- Performance monitoring

3. Tech stack
Layer Technology
Web framework Next.js 14+
Frontend React + TypeScript
Database PostgreSQL
ORM Prisma
Auth NextAuth.js + custom providers
Styling Tailwind CSS
Monitoring Sentry
Payments Stripe
Message queue Node.js Events / Bull (optional)

4. Quick start
# Clone the project
git clone https://github.com/boxyhq/saas-starter-kit.git
cd saas-starter-kit

# Install dependencies
npm install

# Configure environment
cp .env.example .env.local

# Database setup
npm run db:migrate

# Create an admin account
npm run db:seed

# Start the dev server
npm run dev

# Run tests (verify the architecture)
npm run test

5. AI coding friendliness scores

Dimension Score Notes
Directory structure 3/5 Complex enterprise architecture with many files
Documentation 4/5 Detailed docs with best-practice guides
Test coverage 4/5 Complete unit and integration tests
Example modules 4/5 Complete RBAC, audit and payment examples
Dependency restraint 2/5 Many dependencies, long build times
Incremental dev 2/5 Complex architecture; hard for AI to grasp the whole picture quickly

Overall score: 65/100 (enterprise learning reference, not for fast MVP iteration)

6. Why choose BoxyHQ SaaS Starter Kit

As learning material (recommended):
1. Complete enterprise auth patterns (SAML, MFA)
2. A standard implementation of permission management (RBAC)
3. Production-grade audit-logging design
4. A mature multi-tenant approach

As a production starting point:
1. High code quality with test coverage
2. Payment integration (Stripe) fully configured
3. Monitoring and error tracking (Sentry) built in
4. Internationalization framework preconfigured

7. When it is not a good fit

- Rapid prototypes and MVPs (too many dependencies, complex startup)
- Early AI-coding exploration (too much code for AI to grasp quickly)
- Personal or small-team projects (over-engineered)
- Lightweight projects that need minimal dependencies