FX pairs earliest available historical data point for the supplied interval (P1D default)
ISO8601 duration, such as P1D (daily). Defaults to P1D. Options are P1D, PT1H, PT1M. ISO8601 Duration. https://en.wikipedia.org/wiki/ISO_8601#Durations
bid or ask
bid, ask Success
Server response time in milliseconds
ISO8601 Duration. https://en.wikipedia.org/wiki/ISO_8601#Durations
bid or ask
bid, ask