/api/v1/export/rates/{ext}GETlatest_price, spread, and previous_close_1d are 0-100 percent, the same scale the JSON rates endpoint serves.ak_ prefix), sent as a Bearer token or an ?api_key= query parameter. Each endpoint requires the read scope for its resource (e.g. org:rates:read for rates). Token in: headermessage. One of bad_request, unauthorized, forbidden, not_found, conflict, service_unavailable, upstream_error, service_error, or internal_error.rate_limited. Branch on this to detect a throttled request.rpm for the per-minute cap or daily for the daily one.