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Amounts

All amounts are integers in the smallest unit of the currency. 1299 in EUR means €12.99. For currencies without minor units, such as JPY, 1299 means ¥1,299.

Currencies and countries

  • Currencies use three-letter ISO 4217 codes in upper case: EUR, USD, GBP.
  • Countries use two-letter ISO 3166-1 alpha-2 codes: ES, DE, US.
A transaction in a foreign currency has two amounts:

Dates

Timestamps are ISO 8601 strings in UTC, for example 2026-10-05T19:48:00Z. Daily and monthly spending limits reset at 00:00 UTC.