Headless integration hub
Headless merchants run custom storefronts with the Merly Storefront SDK for shopper-facing loyalty and the Merchant Public API for server-side catalog, customer linking, and order reporting. Merchants configure policy, integrations, and API keys in the Merchant Portal. Never embed pk_live_* API keys in browser JavaScript — use the SDK for shoppers and call the Merchant API from your backend only.
Storefront SDK
Browser widgets for shoppers — balance, nudges, cart redeem. No API keys in the browser.
Merchant Public API
Server-side catalog publish, customer link, and order ingest for custom backends.
Onboarding
Step-by-step setup: connect your store, create API keys, link customers, and embed the SDK.
Merchant Portal
Merchants configure policy, integrations, and API keys without Shopify Admin or WordPress.