buy

Place a buy order in an instrument. (Authorization is required)
URI: https://deribit.com/api/v1/private/buy
URI Path: /api/v1/private/buy
Parameters: shown as JQuery data for POST
{
    "instrument": "BTC-19DEC14",   // name 
    "quantity": 1,                 // quantity, in contracts ($10 per contract for futures, ฿1 — for options)
    "price": "380.0"               // float, USD for futures, BTC for options     
}
Method: POST
Result is JSON object:
{
    "success": true, // true or false
    "result": {
        "order": {
            "orderId": 889, 	// id of created order if success = true
            "instrument": "BTC-22JAN16", 	//instrument name of the order
            "direction": "buy", 	// direction, buy
            "price": 417, 	// price, float, USD for futures, BTC for options
            "quantity": 1, 	// quantity, in contracts ($10 per contract for futures, ฿1 — for options)
            "filledQuantity": 0, 	//filled quantity, in contracts ($10 per contract for futures, ฿1 — for options)
            "commision": 0, 	// commision in btc
            "created": 1453398857489,
            "lastUpdate": 1453398857489,
            "state": "open"
        },
        "trades": []
    },
    "message": "" 	// empty or text message, e.g. error message
}
account
sell