# RAPI Documentation
# Overview
# Usage Limits
Every tenant has a limit on their maximum number of catalogs and items in a catalog. That limit depends on the purchased package. If an item or catalog is created that would cross the limit, the call returns status 402.
# API Reference Index
- Authentication
- User
- UserSettings
- Catalog
- Item
- Component
- Plan
- PlanSnapshot
- Material
- Texture
- PriceService
- Price
- Mesh
- Configuration
- Tag
- ShortId
- Configurator
- Statistics
# Webhooks
For information about webhook, please check here.