market:dex:prices

Make sure you're connected.

Request

All pairs:

{"jsonrpc":"2.0","id":1,"method":"subscribe","params":["market:dex:prices"]}

Specific pair or exchange:

{
  "jsonrpc":"2.0",
  "id":1,
  "method":"subscribe",
  "params":[
    "market:dex:prices",
    {"exchange":"0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f"}
  ]
}

Param	Type	Description
exchangeid	`string`	The exchange address to filter by. (OPTIONAL)
pair	`string`	The asset pair by which to filter. DEX pairs are most accurate using pair contract address rather than symbols (OPTIONAL)

Response

"result": {
  "delta":"-0.00608075655281506397",
  "delistedPair":false,
  "isNewPair":false,
  "pair":"0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2_0xfa5047c9c78b8877af97bdcb85db743fd7313d4a",
  "previousPrice":"3.57799516690081739647",
  "previousTimestamp":"2021-01-29T00:35:00.000Z",
  "price":"3.5719144103480023325",
  "timestamp":"2021-01-29T00:38:00.000Z",
  "unchangedPrice":false
}

Field	Type	Description
delistedPair	`bool`	`true` if pair has been delisted. `false` otherwise.
delta	`number`	The dollar value change in price since last update.
isNewPair	`bool`	`true` if pair is new. `false` otherwise.
pair	`string`	The pair, using both base addresses of the pair underlying assets.
previousPrice	`timestamp`	The price at time of last update.
previousTimestamp	`timestamp`	The time of the last update.
price	`number`	The quote price of the asset pair.
timestamp	`number`	The time at which the price change took place.
unchangedPrice	`bool`	`true` if price hasn't changed since last update. `false` otherwise.

Example

const WebSocket = require('ws');
const ws = new WebSocket('wss://ws.web3api.io', {headers: {x-api-key:'<api_key>'}});

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

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