{
"channel": "bbo",
"data": {
"coin": "BTC",
"time": 1700000050000,
"bbo": [
{
"px": "75520.0",
"sz": "3.69",
"n": 23
},
{
"px": "75521.0",
"sz": "6.49689",
"n": 22
}
]
}
}Live Data WebSocket API
bbo
Best Bid/Offer — top-of-book updates for one coin, emitted only when the top level changes
Subscribe with
{"method":"subscribe","subscription":{"type":"bbo","coin":"BTC"}}. Initial top-of-book matches BboSnapshot; subsequent updates use BboUpdate and are only emitted when the top bid or ask changes in price, size, or order count.