CirenLab is the eBay listing system of record. Inventory API listings must be revised through CirenLab/eBay APIs. Use Seller Hub for order handling, but do not use another listing tool to revise these listing objects.

CirenLab eBay Operator Access

Authentication is required before viewing OAuth status or changing eBay inventory, offers, and listings.

Sessions expire after eight hours. Five failed attempts trigger a temporary lockout.