If you’re building your own storefront or platform, you can fully integrate Gale using our REST APIs. This gives you complete control over how products are synced, how checkout sessions are initiated, and how your system responds to real-time updates from Gale.

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Integration Overview

The typical custom integration flow includes:
  1. Sync your product catalog using the Products API.
  2. Check eligibility for HSA/FSA coverage.
  3. Create a hosted checkout session via API.
  4. Receive webhook events for checkout status changes or eligibility updates.
  5. Process refunds or cancellations programmatically.
Refer to the guides and references below to get started.

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Start Custom Integration

API Reference

View and test endpoints such as checkout, products, and refunds in our live playground.

Custom Integration Flow

Understand the end-to-end flow of integrating with the Gale API.