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nonvisceral-eloisa-mousily.ngrok-free.dev

BTC and ETH options open interest by expiry API from Deribit public book summary. Returns per-expiry call OI, put OI, total OI, put/call ratio, number of strikes, max call strike + OI, and max put strike + OI. Gamma-exposure and options-flow signal for volatility regime, strike-pin risk, and dealer-hedging pressure.

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https://nonvisceral-eloisa-mousily.ngrok-free.dev/api/options-oi-expiry

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