open-interest: Get Open Interest

API: github.io:bybit
Endpoint: /v5/market/open-interest
Response format: application/json
Auth: unknown
Method: GET
Last Status: 200
Latency: 340ms

Description

Returns open interest data showing the total number of outstanding derivative contracts. Use this to gauge market sentiment - rising OI suggests new money entering, falling OI suggests position closures.

From spec: Get the total open interest for a symbol.

Usage Tips

- intervalTime parameter is required (in minutes: 5, 15, 30, 60, 120, 240, D, W, M) - Category must be specified: linear, inverse, or option - Data may be empty if no trading activity for the interval

Parameters (4)

category (string, query, required)

Product type (linear or inverse only)

Constraints: {'enum': ['linear', 'inverse']}

interval (string, query, required)

Interval for data aggregation

Constraints: {'enum': ['5min', '15min', '30min', '1h', '4h', '1d']}

limit (integer, query, optional)

Results per page (1-200)

Constraints: {'minimum': 1, 'maximum': 200}

symbol (string, query, required)

Symbol name, e.g., BTCUSDT

Examples (1)

Get open interest for BTCUSDT with 5-minute interval probe-gate

Demonstrates fetching open interest data for a linear perpetual contract.

curl 'https://api.bybit.com/v5/market/open-interest?category=linear&symbol=BTCUSDT&intervalTime=5&limit=1'
import requests

resp = requests.get(
    "https://api.bybit.com/v5/market/open-interest",
    params={
        'category': 'linear',
        'symbol': 'BTCUSDT',
        'intervalTime': '5',
        'limit': '1',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("bybit")
result = api.fetch("v5/market/open-interest", category="linear", symbol="BTCUSDT", intervalTime=5, limit=1)

for item in result:
    print(item)
const resp = await fetch("https://api.bybit.com/v5/market/open-interest?category=linear&symbol=BTCUSDT&intervalTime=5&limit=1");
const data = await resp.json();

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-04-16 00:37:12.735731 200 340ms
2026-04-15 02:38:51.167963 200 359ms
2026-04-14 02:41:50.701244 200 374ms
2026-04-12 15:34:15.528071 200 360ms
2026-04-10 01:33:36.657497 200 282ms
2026-04-09 02:19:53.134639 200 367ms