No signup, no key: the server answers HTTP 402 with the price; an x402 client (x402_requests, @x402/fetch) pays USDC on Base and retries. Discovery manifest: /.well-known/x402.
| Route | Price | Returns |
|---|---|---|
| /chain/token-report | $0.01 | SAFE/CAUTION/AVOID + evidence |
| /gate/swap | $0.008 | GO/HOLD/BLOCK |
Sample: curl “https://x402-data-api.sigrunner.workers.dev/chain/token-report/preview?token=0xYourBaseToken”