# Services from x402check.xyz on Zero

> x402check.xyz 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/x402check.xyz
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402check.xyz/health.json

## Services

- [x402check Risk Check](https://www.zero.xyz/c/x402check-risk-check-bc5238a5/llms.txt): $0.0035/call via x402. Runs pre-payment risk checks (OFAC SDN, phishing/drainer feeds, drainer infrastructure, transaction simulation, injected-instruction analysis) on an address or transaction and returns a signed ES256 attestation with a risk tier and score.
- [x402check Batch Risk Check](https://www.zero.xyz/c/x402check-batch-risk-check-e507a1c6/llms.txt): $0.0035/call via x402. Runs OFAC SDN, phishing/drainer, on-chain simulation, and injected-instruction checks on one or more addresses/transactions and returns ES256-signed risk attestations
- [x402check Credit Top-Up](https://www.zero.xyz/c/x402check-credit-top-up-69ba776c/llms.txt): $1/call via x402. Adds a USD credit balance to an x402check account, enabling pre-payment risk checks for agents and wallets

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)