# Services from api.surefact.workers.dev on Zero

> api.surefact.workers.dev serves 7 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/api.surefact.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.surefact.workers.dev/health.json

## Services

- [Surefact Package Vulnerability Checker](https://www.zero.xyz/c/surefact-package-vulnerability-checker-2f2f4a14/llms.txt): $0.005/call via x402. Checks a package version across npm, PyPI, Crates, RubyGems, Go, NuGet, or Packagist for known vulnerabilities, deprecation, and upgrade advice
- [Surefact FX Currency Converter](https://www.zero.xyz/c/surefact-fx-currency-converter-d5c8b173/llms.txt): $0.005/call via x402. Converts a currency amount from one ISO 4217 currency to another using European Central Bank reference rates, with optional historical date support
- [Surefact Email Verification](https://www.zero.xyz/c/surefact-email-verification-1b69ea27/llms.txt): $0.005/call via x402. Checks an email address for deliverability, typos, disposability, role-account status, and DNS validity, returning a verdict with reasons.
- [Surefact Web Page Reader](https://www.zero.xyz/c/surefact-web-page-reader-dab9cd02/llms.txt): $0.01/call via x402. Fetches and converts any public web page to clean Markdown with metadata, verified against the live source
- [Surefact Provably Fair Randomness](https://www.zero.xyz/c/surefact-provably-fair-randomness-bc3b2973/llms.txt): $0.005/call via x402. Generates provably fair random results (dice rolls, coin flips, winner picks, shuffles) anchored to a public drand beacon with cryptographic proof
- [Surefact Domain Audit](https://www.zero.xyz/c/surefact-domain-audit-6ca2ed8b/llms.txt): $0.005/call via x402. Looks up WHOIS/RDAP registration details, DNS security status, nameservers, and risk signals for a given domain name
- [Surefact DNS Lookup & Audit](https://www.zero.xyz/c/surefact-dns-lookup-audit-724a6fce/llms.txt): $0.005/call via x402. Queries DNS records for a domain or IP address, returning verified record data plus a DNSSEC status and email-security audit report.

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)