Each API key is rate-limited per minute. Production keys have a higher ceiling
than sandbox keys; an explicit per-key limit set in the dashboard overrides the
default.
Every response includes your current standing in the window:
When you exceed it
You’ll receive 429 Too Many Requests:
Back off and retry after Retry-After seconds, ideally with exponential backoff
and jitter. Spread bulk work out rather than bursting.