# Services from rdap-api-production.up.railway.app on Zero

> rdap-api-production.up.railway.app serves 2 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/rdap-api-production.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/rdap-api-production.up.railway.app/health.json

## Services

- [WHOIS/RDAP Lookup API](https://www.zero.xyz/c/whois-rdap-lookup-api-fec3a0e6/llms.txt): $0.01/call via x402. Returns domain registration data (registrar, registrant, dates, nameservers, status) for any domain via the public RDAP protocol, paid per lookup on Base mainnet.
- [WHOIS/RDAP Lookup API](https://www.zero.xyz/c/whois-rdap-lookup-api-ffb3527e/llms.txt): $0.005/call via x402. Returns domain registration data (registrar, registrant, dates, nameservers, status) for a given domain using the public RDAP protocol, paid per lookup via USDC on Base.

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)