Square API (Connect v2)
squareup.com
Provides REST APIs and SDKs for building applications that process payments, manage orders, catalogs, inventory, customers, loyalty, and staff on the Square commerce platform.
The Square API (Connect v2) API uses bearer token authentication. Verified 2026-07-12 with per-field source links.
Free tier
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no sourcePricing model
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no sourceRate limits
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no sourceOpenAPI spec
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