Developer Guides
Learn how to integrate with the Avvail API — fundamentals, feature deep-dives, and reference.
Fundamentals
Getting Started
Set up your API credentials and make your first request to the Avvail Guest Book API.
Authentication
How to obtain, verify, and manage OAuth 2.0 tokens for the Avvail API.
Error Handling
Problem Details response format, the directory of error types, and handling guidance for validation errors and retries.
Advanced Usage
Pagination, filtering, rate limits, entity context, and other advanced API patterns.
Features
Seat Allocations
View and manage your entity's seat allocations across venues, programs, and time windows.
Multi-Venue Availability
Search availability across markets and multiple venues in a single request.
Localization
How to control the language of transactional emails using explicit locale tags on reservations and entities.