# Services from x402.fairseal.io on Zero

> x402.fairseal.io 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/x402.fairseal.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.fairseal.io/health.json

## Services

- [FairSeal VDF Random Number Generator](https://www.zero.xyz/c/fairseal-vdf-random-number-generator-d44d7cb2/llms.txt): $0.005/call via x402. Returns a cryptographically verifiable random number backed by a Wesolowski 2048-bit Verifiable Delay Function (VDF), served from a pool for sub-2ms latency.
- [FairSeal VEO-2 Object Verifier](https://www.zero.xyz/c/fairseal-veo-2-object-verifier-2935ae18/llms.txt): $0.002/call via x402. Validates VEO-2 objects by checking schema conformance, hash integrity, and optionally verifying cryptographic signatures.
- [FairSeal PII Detector](https://www.zero.xyz/c/fairseal-pii-detector-27622024/llms.txt): $0.001/call via x402. Detects personally identifiable information in text using regex patterns, covering emails, phone numbers, national IDs, passports, crypto private keys, credit cards, and SSNs.

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)