# Services from api.veritylayer.dev on Zero

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

## Services

- [VerityLayer Hallucination Verification Engine](https://www.zero.xyz/c/veritylayer-hallucination-verification-engine-faadbb39/llms.txt): $0.25/call via x402. Verifies a claim or AI-generated statement against authoritative sources and returns a verdict, evidence, reasoning, and confidence score to catch hallucinations before they reach users.
- [VerityLayer Pro Verification](https://www.zero.xyz/c/veritylayer-pro-verification-8d3f650a/llms.txt): $0.35/call via x402. Verifies AI-generated claims and citations against authoritative sources, returning a verdict, supporting evidence, reasoning, and a confidence score.
- [VerityLayer Quick Verify](https://www.zero.xyz/c/veritylayer-quick-verify-52c614b7/llms.txt): $0.02/call via x402. Verifies whether an AI-generated claim or citation is factually supported or hallucinated, returning a verdict, evidence sources, reasoning, and confidence score.

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)