# Services from agoreum.xyz on Zero

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

## Services

- [x402 Endpoint Health & Payment Terms Checker](https://www.zero.xyz/c/x402-endpoint-health-payment-terms-checker-ba853b84/llms.txt): $0.5/call via x402. Probes an x402-enabled HTTPS endpoint for reachability, TLS validity, latency, correct 402 response, and valid parseable payment terms.
- [Agoreum Text Screener](https://www.zero.xyz/c/agoreum-text-screener-fcc23131/llms.txt): $0.5/call via x402. Screens text for prompt injection instructions aimed at AI agents, using Agoreum's own listing-screening ruleset.
- [Agoreum Payment Feedback Builder](https://www.zero.xyz/c/agoreum-payment-feedback-builder-c418ff47/llms.txt): $0.5/call via x402. Verifies an on-chain USDC payment transaction and constructs an ERC-8004 feedback file with that payment as cryptographic proof, ready for wallet submission.

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)