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Send and receive JSON over HTTPS.

Request identifiers

Every API response includes X-Request-Id. Keep it with your logs and include it when contacting support.

Identifiers

Resource identifiers are opaque strings. Store the complete value and do not infer meaning from its prefix.

Timestamps

API timestamps use RFC 3339 in UTC unless a field documents a timezone.

Money

Amounts are integers in the currency’s minor unit.

Null and omitted fields

null means the field has no current value. An omitted field is outside that response shape. Do not treat the two as equivalent.
Last modified on July 30, 2026