Developer Guides

Learn how to integrate with the Avvail API — from authentication to advanced usage patterns.

Getting Started

Set up your API credentials and make your first request to the Avvail Guest Book API.

How to obtain, verify, and manage OAuth 2.0 tokens for the Avvail API.

Understand RFC 7807 problem details, common error codes, and retry strategies.

Pagination, filtering, rate limits, entity context, and other advanced API patterns.

Search availability across markets and multiple venues in a single request.

How to control the language of transactional emails using explicit locale tags on reservations and entities.

Key changes, new concepts, and step-by-step migration from v1 to v2 of the Avvail API.

A versioned log of additions, changes, and deprecations in the Avvail Guest Book API v2.