Use before paying any x402 invoice: decodes a base64 PAYMENT-REQUIRED header (qu...
https://x402-research-iota.vercel.app/api/x402/invoice-decodeOverview
Use before paying any x402 invoice: decodes a base64 PAYMENT-REQUIRED header (query ?header= or JSON body {header}) and checks scheme exact, Base mainnet, Base USDC asset, payTo (EOA/contract/EIP-7702), human amount, timeout; returns verdict ok/warn/fail with reasons. Errors: 400 invalid header. Read-only; never signs or pays.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
x402-research-iota
Source
bazaar
Indexed
2026-10-25 14:34:47
Health
Status
healthy
Latency (p50)
419ms
Uptime (30d)
100.0%
Reliability Score
92/100
Last Checked
2026-10-31 07:13:01
Last Healthy
2026-10-31 07:13:01
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"header": "eyJ4NDAyVmVyc2lvbiI6Miwi..."
},
"type": "http"
}
Output Schema
{
"example": {
"accepts": [
{
"amount": "30000",
"amountUsdc": 0.03,
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"checks": [
{
"check": "scheme",
"detail": "scheme=exact",
"level": "ok"
}
],
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": {
"address": "0xa26f...8147",
"kind": "eoa"
},
"scheme": "exact",
"verdict": "ok"
}
],
"reasons": [],
"resource": {
"url": "https://x402-research-iota.vercel.app/api/firm/risk-snapshot"
},
"signed": false,
"verdict": "ok",
"x402Version": 2
},
"type": "json"
}