# Services from kertivo.com on Zero

> kertivo.com 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/kertivo.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/kertivo.com/health.json

## Services

- [Kertivo Check: Payment Verify](https://www.zero.xyz/c/kertivo-check-payment-verify-94d85b2b/llms.txt): $0.01/call via x402. Verifies a USDC payment on Base mainnet — checks confirmation, real USDC transfer, correct recipient and amount, and flags fake tokens or lookalike addresses
- [Kertivo Deep Payment Verify](https://www.zero.xyz/c/kertivo-deep-payment-verify-d4fa29b3/llms.txt): $0.05/call via x402. Deeply verifies a Base USDC payment by checking confirmations, payTo/amount match, fake-token and lookalike warnings, and the payer's full USDC funding history with top funders and a sha256 receipt
- [Kertivo Shield Full-History Address Check](https://www.zero.xyz/c/kertivo-shield-full-history-address-check-612c274a/llms.txt): $0.005/call via x402. Full-history address-poisoning detection for USDC sends on Base, pulling up to the sender's 500 most recent Base USDC transfers via Blockscout to check if the recipient is a lookalike or previously-unseen address.

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)