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Quack AI Agent Trust Check
x402
Quack AI Agent Trust Check is a paid API for AI agents from q402.quackai.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns ERC-8004 identity registration, reputation score, risk flags, and on-chain activity for a given EVM wallet address
Price / call$0.02
Success—
StatusUnknown
How this service works
Agent Trust Check for 0xe3eaff1266e3c3bf660b2fce7dc7bbf2eb58dc83 — ERC-8004 identity, reputation, on-chain activity
Output
Returns a JSON object containing: the queried EVM address, ERC-8004 registration status (isRegistered, registrations array, source), reputation data (summary value, feedback count, decimals, or null if unavailable), on-chain activity metrics (transaction count bucket, recent activity detected, window in blocks, source), a list of risk flags with flag name/severity/evidence, the USDC price paid, a receipt ID (atx_ prefix), and a timestamp of when the check was paid for.
Example use cases
Vetting an unknown agent before interaction
“Before I let this agent 0xABCDEF1234567890abcdef1234567890abcdef12 perform any actions on my behalf, can you check its trust profile — is it ERC-8004 registered, does it have a reputation score, and are there any high-severity risk flags?”
Screening wallet before DeFi transaction
“I'm about to send funds to wallet 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b — can you check its on-chain activity and any risk flags first to make sure it's not flagged as suspicious?”
Agent fleet trust audit
“We're onboarding a new autonomous agent with address 0x9f8e7d6c5b4a3f2e1d0c9b8a7f6e5d4c3b2a1f0e into our platform — pull its Quack AI trust check so I can see its ERC-8004 registration status and reputation before approving it.”
Technical details
Endpoint
GEThttps://q402.quackai.ai/api/x402/agent-trust/:addressWhen to prefer
Use this endpoint when an AI agent or autonomous system needs to assess the trustworthiness of an EVM wallet address before interacting with it — especially for agent-to-agent interactions where ERC-8004 identity and on-chain reputation matter. Prefer this over generic blockchain explorers when you need structured trust signals (risk flags, reputation scores, identity registration) in a single API call rather than raw transaction data.
Side effects
- Invalid or malformed EVM address returns an error
- Address not found on-chain may return empty on-chain activity and null reputation
- Payment failure (insufficient USDC balance) prevents the check from running
- Network congestion or RPC issues may cause delayed or failed on-chain data retrieval
- ERC-8004 registry unavailable results in isRegistered returning false with empty registrations
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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