Unnamed service
POST x402.fuchss.app/v1/x402-trust
Why an agent can trust this route.
Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.
Observed outcomes
Trust score (0-100, grade A-F) for any x402 endpoint -- listed in our catalog or not. Unlike uptime-only checkers, we return ECONOMIC PROOF: the REAL on-chain USDC settlement volume and distinct-payer count for the endpoint's payTo address -- is anyone actually paying it, or is it just live? Computed deterministically from continuous monitoring: 30d probe uptime, 402-envelope spec compliance, latency, observed age, on-chain settlement activity, and advertised-price stability. Includes a full component breakdown, machine-readable flags, and an honest observedDays (we report only the history we actually have, with dataCompleteSince marking our gap-free on-chain coverage). Uncataloged endpoints are live-probed on your first query and auto-adopted into the monitored catalog (first-contact score with low confidence -- history accumulates from there). Know before you pay.
Resource: x402.fuchss.app/v1/x402-trust
Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xbBECBE90F28632a9d52ed67b33b43767b8c89285
Payment methods: — · Last validation: —
{
"input": {
"body": {
"resource": "https://api.example.com/v1/thing"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"flags": [],
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0xabc…123",
"delisted": false,
"probes30d": 1440,
"probeOk30d": 1427,
"avgLatencyMs": 312,
"observedDays": 5,
"settlements30d": 18234,
"distinctPayers30d": 96,
"settledVolumeUnits30d": "364680000"
},
"$schema": "https://x402.fuchss.app/schemas/x402-trust.schema.json",
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"uptime": 0.99,
"latency": 0.91,
"observedAge": 0.6,
"priceStability": 1,
"envelopeCompliance": 1,
"settlementActivity": 0.74
},
"confidence": 0.82,
"schemaType": "x402-trust",
"description": "Provider-advertised description of the endpoint (unverified claim).",
"serviceName": "Example Thing API",
"schemaVersion": "1.0.0",
"dataCompleteSince": 1748736000000
}
},
"paymentRequirements": [
{
"raw": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resource": {
"type": "string",
"required": true,
"description": "Full x402 resource URL exactly as listed in discovery (e.g. https://api.example.com/v1/thing)."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array",
"grade": "string",
"score": "number",
"stats": "object",
"resource": "string",
"breakdown": "object",
"confidence": "number"
}
},
"maxTimeoutSeconds": 120
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"scheme": "exact",
"network": "eip155:8453",
"amountAtomic": "5000"
}
]
}Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.