# Services from 402sentinel.com on Zero

> 402sentinel.com 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/402sentinel.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/402sentinel.com/health.json

## Services

- [402Sentinel x402 Counterparty Risk Gate](https://www.zero.xyz/c/402sentinel-x402-counterparty-risk-gate-37c20d66/llms.txt): $0.02/call via x402. Assesses an x402 payment counterparty's on-chain risk before payment, returning a 0-100 risk score and an allow/review/block decision based on settlement behavior.
- [402Sentinel x402 Counterparty Risk Gate](https://www.zero.xyz/c/402sentinel-x402-counterparty-risk-gate-2c9c20e6/llms.txt): $0.002/call via x402. Scores an x402 payment counterparty address 0-100 for risk and returns an allow/review/block decision based on on-chain settlement behaviour before you pay
- [402Sentinel Counterparty Risk Assessment](https://www.zero.xyz/c/402sentinel-counterparty-risk-assessment-99c4219f/llms.txt): $0.002/call via x402. Scores an x402 payment counterparty 0-100 for risk and returns an allow/review/block decision based purely on on-chain settlement behavior before you pay.
- [402Sentinel Deep Assessment](https://www.zero.xyz/c/402sentinel-deep-assessment-af95e1c1/llms.txt): $0.02/call via x402. Scores an x402 payment counterparty 0-100 for risk using on-chain settlement behaviour and returns an allow/review/block decision before you pay
- [402Sentinel x402 Counterparty Risk Assessment](https://www.zero.xyz/c/402sentinel-x402-counterparty-risk-assessment-b768b62f/llms.txt): $0.02/call via x402. Scores an x402 payee address 0-100 for counterparty risk using on-chain settlement behaviour and returns an allow/review/block decision before an AI agent pays
- [402Sentinel x402 Counterparty Risk Firewall](https://www.zero.xyz/c/402sentinel-x402-counterparty-risk-firewall-28018b1c/llms.txt): $0.002/call via x402. Scores an x402 payment counterparty address (0-100 risk) and returns an allow/review/block decision based on on-chain settlement behaviour before payment is made
- [402Sentinel x402 Counterparty Risk Gate](https://www.zero.xyz/c/402sentinel-x402-counterparty-risk-gate-2e9b7a53/llms.txt): $0.02/call via x402. Scores an x402 payment counterparty's on-chain settlement behaviour (0-100 risk score) and returns an allow/review/block decision before you pay

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)