> ## Documentation Index
> Fetch the complete documentation index at: https://partner.headout.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Before you get started

> Essential information before making your first API call.

## Essential resources

> **[How it works](https://partner.headout.com/docs/guide/how-it-works.md)**
>
> Understand the booking lifecycle — discovery, availability, booking, and post-booking — before you start building.

> **[Setup](https://partner.headout.com/docs/guide/setup.md)**
>
> Read the technical rules that shape authentication, versioning, payloads, and responses before you follow the walkthrough.

> **[Integration walkthrough](https://partner.headout.com/docs/guide/walkthrough.md)**
>
> End-to-end flows for API Partners and Affiliates.

> **[Key concepts](https://partner.headout.com/docs/guide/key-concepts)**
>
> The core model — cities, products, variants, inventory, pricing, bookings, tickets — and the rules that govern how they fit together.

> **[Launch checklist](https://partner.headout.com/docs/guide/checklist.md)**
>
> Use this when you are ready to build and validate the integration before launch.

> **[Enums and error codes](https://partner.headout.com/docs/guide/enums-and-error-codes.md)**
>
> Reference material for implementers who need exact values, statuses, and validation rules.

## Updates

> **[What's new](https://partner.headout.com/docs/guide/whats-new.md)**
>
> Recent changes and release notes.

> **[Upcoming releases](https://partner.headout.com/docs/guide/upcoming-releases.md)**
>
> Planned work and near-term roadmap items.


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