CrossKit ERP - Multi-Tenant Cross-Border E-Commerce SaaS

CrossKit ERP is a production-ready, lightweight **Multi-Tenant SaaS ERP**

built for cross-border e-commerce sellers. Manage all your stores, orders,

inventory, and finances from a single dashboard.

## Tech Stack

• **Backend:** FastAPI (Python 3.11) + SQLAlchemy 2.0 + Celery + Redis
• **Frontend:** Vue 3 + Element Plus + ECharts + Pinia + Vue I18n
• **Database:** MySQL 8.0 (Docker-ready)
• **Auth:** JWT + bcrypt + Multi-Tenant Middleware
• **Payments:** PayPal + Creem (dual gateway, subscription billing)
• **Deploy:** Docker Compose (one-command deployment)

## What Makes This Different

Unlike basic CRUD scripts, CrossKit ERP is a full SaaS platform with:

• **Multi-Tenant Architecture** - Shared DB, isolated by tenant_id middleware
• **3-Tier Subscription Model** - Free trial (7-day) / Basic ($199/mo) / Pro ($399/mo)
• **Real Platform Integrations** - Amazon SP-API, Shopify, 1688/Alibaba adapters
• **Dual Payment Gateways** - PayPal + Creem with webhook handling
• **AI-Powered Features** - OpenAI/DeepSeek LLM integration for product descriptions
• **Built-in Marketing** - Landing page, blog system, SEO structured data, conversion tracking
• **Real-time Dashboard** - ECharts-powered analytics and profit reports

## Production-Ready Features

• JWT authentication with rate limiting & account lockout
• Session security middleware (device fingerprinting)
• Upload security (virus scan-ready, MIME whitelisting)
• Data encryption (AES-256 Fernet + bcrypt passwords)
• Comprehensive logging (loguru)
• Async task queue (Celery + Redis)

## One-Command Docker Deploy

```bash

docker-compose up -d

```

Includes Redis, Celery worker, Celery beat scheduler, and web service.

Nginx config with SSL/HTTPS ready.

## Included Assets

• Full Vue 3 frontend with 30+ pages (dashboard, orders, products, inventory,

reports, AI tools, blog, landing page, pricing, etc.)

• 47+ API route modules with Swagger/ReDoc auto-documentation
• Database migration scripts (Alembic)
• Multi-language support (Chinese + English)
• SEO-optimized landing page with Schema.org structured data
• Complete .env.example with documentation