Get option market data
Retrieve option market data (Greeks and implied volatilities) for an underlying or instrument family.
Query parameters
uly
Underlying, e.g. BTC-USD. Either uly or instFamily is required; if both are passed, instFamily is used.
instFamily
Instrument family, e.g. BTC-USD. Either uly or instFamily is required.
expTime
Contract expiry date, the format is YYMMDD, e.g. 200527.
Response
Successful response
code
Result code. 0 means success; any other value is an error code.
msg
Error message. Empty on success.
data

