Inspect a public URL with HEAD; GET only on 405/501. Return origin status, final URL, headers, cache validators and up to 5 redirects. Limits: 8s, 2 MiB. Origin 4xx/5xx are observations; length is unverified and SHA256 covers only complete GET bodies. No JavaScript, login or availability guarantee. 0.001 Base Sepolia test USDC per success; invalid inputs/errors are not settled.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base Sepolia | exact | $0.001000 USDC | 0xf9c2...61Ba |