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Agent Trust Score: Check Before You Pay
x402
Agent Trust Score: Check Before You Pay is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Given an x402 endpoint URL, a wallet address, or an ERC-8004 agent ID, returns a pay/caution/avoid verdict with two supporting reasons derived from on-chain payment data, liveness probes, and operator identity checks.
Price / call$0.005
Success—
StatusUnknown
How this service works
Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.
Output
A JSON object with a verdict field ('pay', 'caution', or 'avoid'), an array of two strongest reasons drawn from observed data, operator identity (ERC-8004 on Arc if found), distinct payer wallet counts from Base and Arc, liveness probe results (GET and POST to the x402 endpoint), 7-day watchtower uptime history, one-payer and shared-address boolean flags, a disclaimer about signal confidence, and a timestamp of when the check was performed.
Example use cases
Vet an unknown agent before paying
“I found an x402 endpoint at https://someagent.xyz/api/action — can you check its trust score and tell me if it's safe to pay, along with the reasons?”
Check a wallet address before sending funds
“Before I send USDC to 0xAbC1234567890defABC1234567890defABC12345, can you look up whether this wallet has been paid by many distinct addresses on Base or has any red flags?”
Verify an Arc-registered agent's credibility
“Can you check the trust score for the ERC-8004 agent with ID arc-agent-42 on Arc and tell me if it's pay, caution, or avoid — and what the top two reasons are?”
Technical details
Endpoint
GEThttps://apexfaucet.xyz/api/x402/agent-trust?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or user needs a pre-payment risk signal for an x402-payable endpoint, a Base wallet, or an ERC-8004 agent registered on Arc. It is specifically suited for agentic payment pipelines where autonomous agents must decide whether to pay another agent without human review. Prefer it over generic blockchain explorers when you need an opinionated verdict (not raw data) that synthesizes on-chain payer diversity, operator identity, and live endpoint health in a single call.
Side effects
- Agent or URL not indexed on Arc or Base Bazaar — verdict may rely solely on liveness probe with limited signal
- Invalid or malformed URL/address/agent ID parameter — API may return an error or notCovered message
- x402 endpoint is offline — liveness probe fails, reducing confidence in verdict
- No on-chain payment history found — one-payer or zero-payer flags may dominate the verdict
- Rate limiting or upstream data lag — Base 24h Bazaar data may be stale
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"data": {
"type": "object"
},
"paid": {
"type": "number"
}
}
}
}Tags
x402
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