{"asset":"USDC","network":"base","chain":"eip155:8453","pay_to":"0xb9FAE1E2aa1A508BBAFd511b804B7067fE5A3986","price":"$1","endpoint":"POST /verify","free_trial":"POST /try with {deliverable, spec} for a free sample verify (rate-limited per IP).","how":"POST to /verify; pay the x402 402 challenge in USDC on Base or Solana; receive the verdict.","inputs":{"deliverable":"required — URL or content","spec":"what it must satisfy","kind":"auto | video | url | text"},"returns":["passed (bool)","score (0-100)","checks[]","issues[]","summary"]}