# Services from postal.openverbs.com on Zero

> postal.openverbs.com serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/postal.openverbs.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/postal.openverbs.com/health.json

## Services

- [Postal Code Validator](https://www.zero.xyz/c/postal-code-validator-18543f63/llms.txt): $0.002/call via x402. Validates whether a postal/ZIP code is well-formed for a given country using ISO 3166-1 alpha-2 country codes
- [Postal Code Regex Spec Lookup](https://www.zero.xyz/c/postal-code-regex-spec-lookup-c7ec071c/llms.txt): $0.002/call via x402. Returns the validation regular expression (pattern source and flags) used to validate postal codes for a given country.
- [Postal Code Format & Validation](https://www.zero.xyz/c/postal-code-format-validation-1fe7f6c9/llms.txt): $0.002/call via x402. Normalises a postal/ZIP code's casing and whitespace and reports whether the normalised form is valid for a given country.
- [Postal OpenVerbs - List Supported Countries](https://www.zero.xyz/c/postal-openverbs-list-supported-countries-f0d3edc1/llms.txt): $0.002/call via x402. Returns every ISO 3166-1 alpha-2 country code for which a postal-code validation pattern is available.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)