Build on Merly

Integrate loyalty, wallet balances, and lifecycle webhooks into your storefronts and business systems.

Custom storefronts

Use the Storefront SDK for shoppers, the Merchant API for your backend, and the Merchant Portal for day-to-day store configuration.

Headless integration hub →

Merchant Public API

Server-side access to customer wallet balance, tier, activity, webhooks, and headless write APIs using pk_live_ keys.

Merchant API reference →