market:options:open_interests

Once you're connected to this subscription: wss://ws.amberdata.com/options, you must provide either the instrument or exchange - one needs to be specified, both cannot be empty.

Request

{
  "jsonrpc" : "2.0",
  "id"      : 1,
  "method"  : "subscribe",
  "params"  : [ "market:options:open_interests", { "instrument": "ETH-17DEC21-4100-C", "exchange": "deribit" } ]
}

Response

{
    "jsonrpc": "2.0",
    "method": "subscription",
    "params": {
        "subscription": "4ce0d4c7-905a-44c0-ba96-121992670f13",
        "result": {
            "instrument": "BTC-12APR24-71000-C",
            "exchange": "deribit",
            "timestamp": 1711571535660,
            "value": 293.2
        }
    }
}

Example

const WebSocket = require('ws');
const ws = new WebSocket('wss://ws.amberdata.com/options', {headers: {x-api-key:'<api_key>'}});

ws.on('open', () => {
  ws.send(JSON.stringify({
      jsonrpc: '2.0',
      method: 'subscribe',
      params: ['market:options:open_interests'],
      id: 1,
    }));
});

ws.on('message', data => {
  console.log(JSON.stringify(JSON.parse(data), null, 2));
});