CryptoDataAPI: Open Interest. Cross-exchange open interest. Returns multi-symbol...
https://api.realtimeapi.ai/v1/cryptodata/market-intelligence/open-interestOverview
CryptoDataAPI: Open Interest. Cross-exchange open interest. Returns multi-symbol data (top ~25 perps) when available, falling back to BTC-only from the fast-refresh cache. **Filter semantics:** ``exchange=`` is a **coin-set filter**, not an exchange-data filter. With ``exchange=hyperliquid`` you get the coins listed on Hyperliquid, but each entry's ``exchange_list`` still aggregates open interest across all CEXes. For Hyperliquid's own per-asset OI use ``/daily/hyperliquid`` — note that...