Each payment must be within these limits. The limit is checked against the amount your customer sends (the source_amount in the quote).
Limits for each fiat currency are listed below. New currencies come with their own limits, which are added here when they launch.
Onramp: fiat in
Limits are in the fiat currency.
Offramp: stablecoin in
Limits are in the stablecoin. USDT has the same limits as USDC.
Decimal places
Amounts can’t have more decimal places than the currency allows. For example, 150000.50 is fine for NGN, but 150000.505 is rejected with:
If an amount is outside the limits
The quote request fails with a 422 error, and the message tells you the limit. For example:
Last modified on October 29, 2026