# Services from sdn-screen-x402.sdnscreen.workers.dev on Zero

> sdn-screen-x402.sdnscreen.workers.dev serves 3 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/sdn-screen-x402.sdnscreen.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/sdn-screen-x402.sdnscreen.workers.dev/health.json

## Services

- [SDN Wallet Screen + DNS & Email-Auth (x402)](https://www.zero.xyz/c/sdn-wallet-screen-dns-email-auth-x402-6894bcf3/llms.txt): $0.01/call via x402. Checks a crypto wallet address against the OFAC SDN list for sanctions matches, with optional DNS record lookup and SPF/DMARC/DKIM email authentication checks, billed at $0.01 USDC per call via x402.
- [SDN Screen Email Authentication Check (x402)](https://www.zero.xyz/c/sdn-screen-email-authentication-check-x402-44738c12/llms.txt): $0.01/call via x402. Checks SPF, DMARC, and DKIM email authentication records for a given domain, returning a grade and scored issue report, paid per-call via x402 at $0.01 USDC.
- [SDN Wallet Screen + DNS & Email-Auth — DNS Lookup Endpoint (x402)](https://www.zero.xyz/c/sdn-wallet-screen-dns-email-auth-dns-lookup-endpoint-x402-1ff859f4/llms.txt): $0.01/call via x402. Performs a live DNS record lookup for a given domain, returning all or filtered DNS record types, paid per-call at $0.01 USDC via x402.

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)