> ## Documentation Index > Fetch the complete documentation index at: https://docs.tabby.ai/llms.txt > Use this file to discover all available pages before exploring further. # API Reference Documentation In this part of the documentation all the needed API calls for Tabby Integration can be found and tested: * Checkout - it is a whole process of customer data collection and payment authorization. * Payments - the core of Tabby is a payments flow enabling you to handle payments at your webstore. * Webhooks - serve to ensure a seamless payment verification flow. * Disputes - help merchants resolve issues with customers orders more efficiently. ## Base URLs Tabby uses region-specific domains. Choose the base URL based on the merchant's operating country: | Region | API Base URL | Checkout / Promo | Merchant Dashboard | | --------------- | ---------------------- | ------------------- | ------------------- | | **UAE, Kuwait** | `https://api.tabby.ai` | `checkout.tabby.ai` | `merchant.tabby.ai` | | **KSA** | `https://api.tabby.sa` | `checkout.tabby.sa` | `merchant.tabby.sa` | All API paths and payloads are identical across both domains. Tabby identifies the environment (test or live) based on the API keys used. | Contact | UAE, Kuwait | KSA | | -------------------- | ------------------ | ------------------ | | **Partner Support** | `partner@tabby.ai` | `partner@tabby.sa` | | **Customer Support** | `help@tabby.ai` | `help@tabby.sa` | ## OpenAPI Specification To access and download the raw OpenAPI specification file kindly use this: [openapi.yaml](https://docs.tabby.ai/openapi.yaml). You can also view this API specification using [ReDoc](https://redocly.github.io/redoc/?url=https://docs.tabby.ai/openapi.yaml), the same is present below: