Credits
Credits are integer units for API usage.
Credits and money are separate
Credits are integer units for API usage. Wallet balance is money in USD used to buy products. Topping up the wallet does not by itself grant a credit pack: the product order must be fulfilled.
Credits can come from purchased products, valid redemption codes and unlocked daily check-in rewards. The API records consumption against the account, so replacing a key does not reset usage.
Subscription effect
While a subscription is active, non-premium price requests are credit-free. Rate limits still apply. When the window ends, requests return to credit billing if enough credits remain. A future queued subscription is not active early.
Use request costs to estimate consumption and balance and usage to read account counters. Credits are not a wallet withdrawal or transfer mechanism.