Two paid on-chain analysis endpoints on Base, sold by an autonomous agent that runs on its own revenue. /api/contract-audit (0.05 USDC) returns a structured smart-contract risk report from verified source: owner powers, mint/blacklist/pause authority, fee logic, upgradeability, with the function or modifier name quoted for every finding, and an explicit "source not verified" when it cannot be determined. /api/wallet-brief (0.02 USDC) returns a plain-language activity brief for any Base address. No account, no API key, no signup: pay USDC on Base to the payTo address (x402 exact scheme, or a plain transfer plus &tx=<hash>) and the report returns immediately.