Market Data
Open interest
Polymarket aggregate or per-market open interest.
GET /open-interest
Polymarket aggregate or per-market open interest. Proxies Polymarket Data API
/oi with 60s cache.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
market_id | string | — | Omit for aggregate OI across Polymarket; set for per-market OI |
curl -H "x-api-key: YOUR_KEY" \
"https://api.scanna.xyz/open-interest"