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GET /v1/chain

Option chain

Try it live

10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/cryptooptions-api

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

curl "https://api.oanor.com/cryptooptions-api/v1/chain" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/cryptooptions-api/v1/chain", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/cryptooptions-api/v1/chain");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/cryptooptions-api/v1/chain",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "type": "put",
        "count": 50,
        "total": 473,
        "expiry": "all",
        "options": [
            {
                "type": "put",
                "expiry": "26JUN26",
                "strike": 20000,
                "mark_iv": 173.63,
                "currency": "BTC",
                "ask_price": 0.0002,
                "bid_price": null,
                "mid_price": null,
                "instrument": "BTC-26JUN26-20000-P",
                "mark_price": 6.997e-5,
                "volume_24h": 0.1,
                "expiry_date": "2026-06-26T08:00:00.000Z",
                "open_interest": 4609,
                "underlying_price": 62847.29
            },
            {
                "type": "put",
                "expiry": "26JUN26",
                "strike": 30000,
                "mark_iv": 124.59,
                "currency": "BTC",
                "ask_price": 0.0002,
                "bid_price": 0.0001,
                "mid_price": 0.00015,
                "instrument": "BTC-26JUN26-30000-P",
                "mark_price": 0.00017555,
                "volume_24h": 299.3,
                "expiry_date": "2026-06-26T08:00:00.000Z",
                "open_interest": 3115.3,
                "underlying_price": 62847.29
            },
            {
                "type": "put",
                "expiry": "25SEP26",
                "strike": 30000,
                "mark_iv": 72.08,
                "currency": "BTC",
                "ask_price": 0.0031,
                "bid_price": 0.0027,
                "mid_price": 0.0029,
                "instrument": "BTC-25SEP26-30000-P",
                "mark_price": 0.00289327,
                "volume_24h": 0.3,
                "expiry_date": "2026-09-25T08:00:00.000Z",
                "open_interest": 1758.7,
                "underlying_price": 63392.82
            },
            {
                "type": "put",
                "expiry": "25DEC26",
                "strike": 30000,
                "mark_iv": 65.2,
                "currency": "BTC",
                "ask_price": 0.0085,
                "bid_price": 0.0075,
                "mid_price": 0.008,
                "instrument": "BTC-25DEC26-30000-P",
                "mark_price": 0.00797609,
                "volume_24h": 12.6,
                "expiry_date": "2026-12-25T08:00:00.000Z",
                "open_interest": 1639.7,
                "underlying_price": 64025.65
            },
            {
                "type": "put",
                "expiry": "25SEP26",
                "strike": 35000,
                "mark_iv": 65.31,
                "currency": "BTC",
                "ask_price": 0.0055,
                "bid_price": 0.0048,
                "mid_price": 0.00515,
                "instrument": "BTC-25SEP26-35000-P",
                "mark_price": 0.005131,
                "volume_24h": 1.9,
                "expiry_date": "2026-09-25T08:00:00.000Z",
                "open_interest": 565.2,
             
…