One-call Base (8453) preflight: risk snapshot + live ERC-20 approvals + OFAC SDN...
https://x402-research-iota.vercel.app/api/x402/preflightOverview
One-call Base (8453) preflight: risk snapshot + live ERC-20 approvals + OFAC SDN screen + optional x402 invoice check (?invoice= JSON or base64). Returns risk, approvals, invoice, sanctions and summary {verdict proceed|review|stop, flags}. Free sample: /api/preflight/sample. 400 bad input; 503 not charged. Informational, not a guarantee.
Protocol
x402
Price
$0.05
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
x402-research-iota
Source
bazaar
Indexed
2026-10-24 22:29:51
Health
Status
healthy
Latency (p50)
548ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-10-31 07:12:06
Last Healthy
2026-10-31 07:12:06
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"address": "0xf9623fab6780984eacac443158c0309519451afa"
},
"type": "http"
}
Output Schema
{
"example": {
"address": "0xf962...1afa",
"approvals": {
"approvals": [
{
"allowanceFormatted": "unlimited",
"risk": "high",
"spender": "0x1111...0a65",
"symbol": "USDC"
}
],
"highRiskCount": 1,
"status": "ok"
},
"chainId": 8453,
"invoice": null,
"risk": {
"accountType": "eoa",
"flags": [],
"riskLevel": "low"
},
"signed": false,
"summary": {
"approvalsStatus": "ok",
"coverageNote": "Public-data heuristics only... \"none\" never means safe.",
"flags": [
{
"code": "unlimited_approval",
"detail": "Unlimited USDC allowance to spender 0x1111...0a65.",
"level": "high",
"source": "approvals"
}
],
"highRiskCount": 1,
"invoiceVerdict": null,
"riskLevel": "low",
"sanctionsStatus": "clear",
"verdict": "stop",
"verdictNote": "Informational heuristic only, not a guarantee."
}
},
"type": "json"
}