Square Developer Forums - Forums for asking about Square APIs and SDKs

Square Developer Forums

Topic	Replies	Views	Activity
Developer Support Consolidation Announcements Hi all - we wanted to provide an update. We’re consolidating developer support into a single channel. Starting May 1, our Developer Forums will be the central place for all questions and discussions and as part of this c…	1	698	July 12, 2026
Welcome to Square Developer Forums Site Feedback	9	13297	August 19, 2026
Sandbox OAuth + app_fee_money: where should the application fee appear? Questions payments-api , sandbox , app-marketplace , oauth-api	0	1	September 21, 2026
Square Online: Meta external_id and diagnostic data sharing Questions	1	13	September 19, 2026
Catalog items created via API never appear in the Dashboard item library list (visible in POS app and Dashboard search) Questions catalog-api	6	37	September 19, 2026
Bitcoin payments and wallet APIs Feature Requests	2	104	September 19, 2026
Allowlist: Cloudflare MCP Server Portals MCP	1	1	September 19, 2026
BatchUpsertCatalogObjects returns "nonexistent object" for an ITEM that RetrieveCatalogObject confirms exists (Production) Questions	2	9	September 19, 2026
Subscriptions API: seven-day pause accepted in Sandbox, billing date guarantees? Questions	3	36	September 19, 2026
How Long Does It Take To Develop a Car Insurance App? Questions reader-sdk	4	154	September 19, 2026
Request for Discount Codes API Access – Square Vouchers – FedeleApp Questions	2	12	September 19, 2026
Two subscriptions cancelled mid-trial with no request from our application Questions	0	2	September 19, 2026
Meta Pixel content_id (Item ID) doesn't match Facebook/Instagram catalog retailer_id (Item Variation ID) Questions	1	7	September 18, 2026
Existing Google Business Profile not matching with Square location Questions	8	38	September 18, 2026
Request for additional webhook endpoints in Sandbox environment Questions sandbox , webhooks-api	1	12	September 18, 2026
PosClient Integration - trying to streamline Questions	1	8	September 18, 2026
Square POS – Configured Hours Not Returned in API Response Questions	3	21	September 18, 2026
Unable to test payment flow in sandbox for square-hosted checkout page Questions payments-api , sandbox	3	24	September 18, 2026
Production token works in API Explorer but gets 401 from AWS Amplify Questions payments-api , checkout-api	5	10	September 18, 2026
Need Support/Technical Contact Person for API integration with Microsoft Dynamics 365 Finance & Operations Questions	2	14	September 18, 2026
CreateCard INVALID_CARD_DATA with Ecuador-issued international Visa after successful payment Questions cards-api	1	7	September 18, 2026
No terminal.checkout.updated COMPLETED webhook event: international card inserted after first tap declined Questions payments-api , webhooks-api	2	23	September 18, 2026
Clarification on implementing Square’s multi-level category hierarchy Questions	1	11	September 18, 2026
Square Google Free Local Product Listings: repeated Merchant Center API errors Questions	3	31	September 18, 2026
Rate limits for a multi-tenant Appointments app Questions booking-api	1	13	September 18, 2026
Service charge added via UpdateOrder is not visible on Square Terminal Questions orders-api	1	8	September 18, 2026
Need urgent help with 400 response INVALID_REQUEST_ERROR Questions payments-api , cards-api	10	595	September 18, 2026
Japan: supported way to verify a Checkout API integration in production before launch Questions	1	11	September 18, 2026
Clarification Required for No-Show Fee Implementation and Authorization Handling Questions payments-api	1	15	September 18, 2026
MCP Allowlist Request - CloseBooks MCP	1	9	September 18, 2026