TestingLISTSCheck item StatusCheck item Status GET /3/list/:list_id/item_status This endpoint check if an item has already been added to the list. Request Responses200Check item StatusResponse HeadersAlt-SvcCache-ControlConnectionContent-EncodingDateETagServerTransfer-EncodingVaryViaX-Amz-Cf-IdX-Amz-Cf-PopX-Cache