MCP Server for Square: POS Integration

Exposing Square's Orders, Payments, and Catalog APIs as MCP tools for point-of-sale and inventory agents.

Square implementationsRetail workflow sharing

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Square splits its API into Orders, Payments, and Catalog — an MCP server for retail agents typically needs read access to all three and write access only to Orders.

Core Tools

search_catalog_items(query, category)
create_order(location_id, line_items)
get_payment_status(payment_id)

Never Expose Raw Card Data

Tools should only ever handle Square's tokenized payment references, never raw card numbers — keep PCI scope entirely inside Square's SDKs, not your MCP server.

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