You cannot buy Credits or Gems yet. Billing currently runs in a Paddle sandbox with no real charges during the Beta.
The Billing page shows free, Pro, and Business plans inside the Paddle sandbox. A banner states that no real charge will occur, and no payment method is stored, so nothing is deducted while the sandbox is active.
If a subscription is managed through Paddle, management and cancellation happen in the Paddle customer portal rather than inside Calder. Billing history and invoice PDFs remain available for completed sandbox transactions.
Credits and Gems currently come from participating in Missions, company transfers, and one-time grants such as Starter Gems, not from purchases.
