Subscriptions and limits

• GET /subscriptions/plans/: current plan catalog.
• GET /subscriptions/current/?organization={id}: current organization subscription.
• GET /subscriptions/limits/?organization={id}: usage, entitlements and capacity.
• POST /subscriptions/subscribe/: start or change a subscription.
• POST /subscriptions/{id}/cancel/: cancellation.
• GET /subscriptions/{id}/invoices/: invoice history.
• GET /subscriptions/addons/catalog/, GET /subscriptions/addons/, POST /subscriptions/addons/purchase/: add-on catalog and purchases.

The subscription belongs to the paying account; entitlements apply at the organization boundary. Read current limits before provisioning stores, staff or storage. Prices and eligibility come from the live catalog and checkout response.