postal.openverbs.com publishes 2 machine-payable endpoints over the x402 protocol, priced from $0.002 to $0.002 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /v1/format | GET | $0.002 | 402 |
| /v1/validate | GET | $0.002 | 402 |
Normalise a postal code's casing and whitespace (uppercase, collapse runs of spaces) and report whether the normalised form is valid for the country.
Check whether a postal / ZIP code is well-formed for a country (ISO 3166-1 alpha-2). A malformed code is a successful result with `valid:false`, not an error — only an unsupported country or empty cod…