# Services from q402.quackai.ai on Zero

> q402.quackai.ai serves 4 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/q402.quackai.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/q402.quackai.ai/health.json

## Services

- [Quack AI Agent Trust Check](https://www.zero.xyz/c/quack-ai-agent-trust-check-bb5d11da/llms.txt): $0.02/call via x402. Returns ERC-8004 identity registration, reputation score, risk flags, and on-chain activity for a given EVM wallet address
- [Quack AI Q402 Agent Trust Deep Profile](https://www.zero.xyz/c/quack-ai-q402-agent-trust-deep-profile-76658e66/llms.txt): $0.49/call via x402. Returns a deep on-chain trust profile for an EVM wallet address, including ERC-8004 identity registration status, recent transaction activity, risk flags, and reputation signals.
- [Quack AI Q402 Agent Trust Monitor](https://www.zero.xyz/c/quack-ai-q402-agent-trust-monitor-e5c5455d/llms.txt): $0.15/call via x402. Fetches on-chain reputation, identity registration, and recent activity data for an EVM wallet address to assess its trustworthiness before sponsoring gasless transactions.
- [Quack AI Q402 Agent Trust Check](https://www.zero.xyz/c/quack-ai-q402-agent-trust-check-39a66958/llms.txt): $0.02/call via x402. Looks up the trust profile and on-chain reputation of an EVM wallet address, returning risk flags, ERC-8004 identity registration status, and recent transaction activity.

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)