WebSocket API

query.maxBuySell

Get the maximum buy/sell quantity by account, symbol, and price. No signature required.

Required scope: tradingws:maxBuySell:get.

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

bodyobjectrequired
idstringrequired
methodstringrequired
paramsobjectrequired
accountNostringrequired

Trading account to check the max buy/sell quantity for.

symbolstringrequired

Trading symbol to check the max buy/sell quantity for.

pricenumber | nulloptional

Price to check the max buy/sell quantity against.

timestampintegerrequired

Response Body

application/json

application/json

Sample Request

wscat -c wss://api.ssi.com.vn/ws/v3/trading -x '{
  "id": "req-0010",
  "method": "query.maxBuySell",
  "params": {
    "accountNo": "0901351",
    "symbol": "SSI",
    "price": 45.5
  },
  "timestamp": 1755000009000
}'

Sample Response

{
  "id": "req-0010",
  "method": "query.maxBuySell",
  "status": 200,
  "result": {
    "accountNo": "0901351",
    "maxBuyQty": 5000,
    "marginRatio": "50%",
    "purchasingPower": 227500,
    "maxSellQty": 1000
  },
  "rateLimit": {
    "limit": 100,
    "remaining": 95,
    "resetMs": 820
  }
}

query.positionWS

Get position information for an account. Equity accounts return `equity`, derivative accounts return `derivative`. No signature required. Required scope: `tradingws:position:get`.

query.accountBalanceWS

Get the trading account balance. No signature required. Required scope: `tradingws:accountBalance:get`.