Overview
Payment security firewall scan for an OUTGOING x402 payment: PII/secret leak detection in payment metadata, nonce replay detection, overpayment detection, prompt-injection-triggered payment analysis (fast + deep tiers), canonical-USDC asset verification, merchant pinning, velocity/spend caps, and counterparty reputation cross-check. Returns allow/flag/block with per-check reasons and an Ed25519-signed verdict. Advisory and non-custodial.
Protocol
x402 (POST)
Price
$0.01
Payment Asset
USD Coin
Payment Network
Base
Category
uncategorized
Provider
paysafe-agent
Indexed
2026-07-14 23:15:24
Health
Status
healthy
Latency (p50)
637ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-10-27 22:25:13
Last Healthy
2026-10-27 22:25:13
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"body": {
"context": {
"origin": "planning"
},
"expected_price_usd": 0.05,
"payment": {
"amount": "50000",
"asset_decimals": 6,
"description": "Premium data access",
"network": "eip155:8453",
"nonce": "0x1a2b3c",
"pay_to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
"resource_url": "https://api.example.com/premium",
"scheme": "exact"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"advisory": "Recommended action: DO NOT settle this payment. …",
"attestation": {
"alg": "ed25519",
"message": "6f9c9d5e-…|outgoing|block|95|2026-07-14T09:01:00Z",
"signature_hex": "…"
},
"checks": [
{
"id": "replay.nonce_reuse",
"reason": "Nonce reuse detected: first seen 2026-07-14T09:00:00Z …",
"severity": "critical",
"verdict": "block"
}
],
"direction": "outgoing",
"risk_score": 95,
"scan_id": "6f9c9d5e-…",
"scanned_at": "2026-07-14T09:01:00Z",
"verdict": "block"
},
"type": "json"
}
Recent Health Checks
| Time |
Status |
HTTP |
Latency |
Error |
| 2026-10-27 22:25:13 |
healthy |
402 |
637ms |
|
| 2026-10-27 21:23:50 |
healthy |
402 |
390ms |
|
| 2026-10-27 21:05:15 |
healthy |
402 |
994ms |
|
| 2026-10-27 20:07:14 |
degraded |
404 |
885ms |
|
| 2026-10-27 19:04:42 |
degraded |
404 |
267ms |
|
| 2026-10-26 17:05:16 |
degraded |
404 |
249ms |
|
| 2026-10-26 03:57:20 |
degraded |
404 |
202ms |
|
| 2026-10-25 06:16:39 |
degraded |
404 |
766ms |
|