# OpenInterest

Perp open interest across OKX, Hyperliquid, dYdX — BTC/ETH/SOL/AVAX/LINK/ARB. Signal: ACCUMULATING/DELEVERAGING/MIXED. Returns USD totals, per-exchange breakdown, 5-min OI delta, and dominant exchange. Use /signal for lightweight signal only, /extremes for top movers. $0.05/query via x402. | Also: FundingRates (funding.lonestaroracle.xyz) Liquidations (liq.lonestaroracle.xyz) | Full catalog: lonestaroracle.xyz

Base URL: https://oi.lonestaroracle.xyz
Payment: x402 micropayment in USDC on Base (eip155:8453) or Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp); a 402 response returns payment terms.

## Endpoints
### GET /oi
Full OI report — all assets, all exchanges

### GET /extremes
Top movers by OI delta — agent-optimized

### GET /signal
Signal only — ultra-lightweight

## Related services
Part of LoneStarOracle's derivatives-stress cluster - use these together:
- Liquidations (liq.lonestaroracle.xyz, $0.10) - when the open leverage gets flushed
- FundingRates (funding.lonestaroracle.xyz, $0.05) - the cost / sentiment on that open interest
- CascadeWatch (cascade.lonestaroracle.xyz, $0.10) - contagion / cascade risk across the system

Agent manual (SKILL.md): https://oi.lonestaroracle.xyz/SKILL.md