Opensea Transaction Maker

Endpoint

Query

query user($address: String){
  saleEvents(where:{maker:$address})
  {
    id
  }
}

Expression

function(data) {
  if (data == null || data.saleEvents == null) {
    return 0
  } else if (Array.isArray(data.saleEvents) && data.saleEvents.length == 0) {
    return 0
  }
  return 1
}