Returns active workspaces in the current region by default. Use cross_region=true to include peer-region workspaces. Peer-region workspaces come from the reporting copy and can lag. They appear only for organizations in the reporting replication. A failed peer workspace read returns reporting_region_unavailable. Use fields to request access counts and attached SSO connections. Requires organization administration. Counts follow the users list visibility rules. Each person counts once per workspace. Membership wins over pending entries. A transfer-required owner counts only as transfer_required. Other pending entries use seat_denied, assigned, invited, then expired precedence. Search matches a part of the workspace name without regard to case. Sort by name, ascending by default. Workspace id breaks ties. Use first and after to page forward, with at most 100 workspaces per page. A cursor of another organization, cross_region value, search or sort returns 400.