Changelog

User-visible API v3 additions and behavior changes are recorded here.

August 12, 2026

Added read-only endpoints to list and retrieve units of measure. Item categories can now be retrieved, created, and updated with ordered custom-field definitions.
Inventory item responses and writes now support category custom-field values. Item lists can return location-specific inventory totals, variation lists can include location details, and variation-location objects expose their authoritative integer identifier.
Added an inventory photo replacement endpoint that preserves the photo UUID and gallery position.
Added estimate preview endpoints for new and existing estimates. Estimates now support customers or prospects, richer financial and line details, permission-sensitive costs, edit eligibility, and optional revision checks with ETag and If-Match.
Added an invoice-wide manual refund endpoint. Invoice details now include richer customer, discount, tax, line-display, edit-state, revision, cost, and source-document information.
Purchase-order and sales-order details now include richer party, discount, tax, line-display, edit-state, and revision information. Eligible updates support optional optimistic concurrency with If-Match.
Document shipping fields now use shipping_fee; estimates, invoices, and sales orders also expose permission-sensitive shipping_cost values.

Added inventory item photo upload, deletion, and complete-gallery reorder endpoints.
Inventory item responses now include a primary-photo summary and photo count. Individual item responses include the complete ordered gallery, and item lists support include=photos.