Agent-readable docs index: /llms.txt. Full docs in one file: /llms-full.txt. Download /docs.zip to grep all markdown files locally.

Stats

GET /v1/stats
Volume and open interest per underlying over roughly the last 24 hours.
[
  {
    "underlyingKey": 1,
    "volume24h": 1520,
    "notional24h": 3040000000,
    "openInterest": 880,
    "byExpiry": [{ "expiryMs": 200003600000, "volume24h": 1520, "openInterest": 880 }]
  }
]
volume24h and openInterest are contracts; notional24h is micro-USDC of premium. An underlying appears once it has traded.