Merchant onboarding

Connect Square with SubscriptionFlow

A polished control center for seller authorization, tenant credential storage, and sync readiness — with encrypted tokens persisted in MySQL.

AES-256Encrypted at rest
OAuth 2Square + SF tokens
WebhooksCustomer sync ready

Connection dashboard

Use the Square merchant ID as the tenant key for SubscriptionFlow.

SubscriptionFlow credentials

OAuth client credentials for the tenant linked to this merchant.