Escrow Release ($0.002/call)

Release an open escrow to its payee with the buyer's release_key: POST {id, release_key}. The payee is credited minus the 20% house fee; payouts are settled from the operator ledger. Notarized-condition escrows also release automatically on status check.

Paid endpoint: $0.002 per call via the x402 protocol (USDC on Base). An unpaid request returns 402 with payment requirements in the PAYMENT-REQUIRED response header; attach payment and retry.