Mark Price and Funding Rate

Type: NONE

External endpoint: GET /fapi/v1/premiumIndex
Rocky impl: GET /v1/markets/{symbol}/funding-rate ✓

Most-recent funding tick plus the next 8-hour funding boundary (UTC).

Request

GET /v1/markets/{symbol}/funding-rate

Response — 200

{
  "symbol": "BTC-PERP",
  "rate": "0.00012500",
  "mark_price": "76538.12",
  "last_funding_ts_ms": 1748246400000,
  "next_funding_ts_ms": 1748275200000
}

Field	Type	Notes
rate	string | null	Most recent funding rate (decimal).
mark_price	string | null	Mark price recorded at the last tick.
last_funding_ts_ms	int64 | null	Time of the last tick.
next_funding_ts_ms	int64	Next 8-hour boundary at or after server time.

Rocky combines what is normally split into premiumIndex + markPrice. Use this single endpoint for both.