Square is the register and the online checkout for a brand that sells in a shop and on the internet. The unit sold at the counter is the same SKU as the unit on Amazon.
Square holds payments, the item catalog, in-person orders, and the inventory the register decrements.
Register orders, payments, and the on-hand count come into the record so a shop sale leaves the count the marketplaces can still sell.
A stock count can go back when Square is the count for the shop. A price change on a marketplace still passes the band.
Whether Square is the register, the online store, or both, who holds the login, and whether shop stock and warehouse stock are one pool.
An API is the door the system opens for orders, stock, and the ledger. An MCP server is a tool surface the AI can call, with the same guardrails. The call names who holds the login, which objects are read, and which writes wait for a person.
QuickBooks Xero Oracle NetSuite Stripe All integrations Platform Schedule a call