Pre-flight check any x402 seller URL: fetches the 402 challenge, decodes the pay...
https://api.firstmention.uk/s/x402check/checkOverview
Pre-flight check any x402 seller URL: fetches the 402 challenge, decodes the payment requirements (scheme, network, asset, price, payTo), flags missing discovery metadata and returns a clear verdict.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
Base
Category
uncategorized
Provider
x402check
Source
bazaar
Indexed
2026-10-26 20:42:46
Health
Status
healthy
Latency (p50)
105ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-27 23:28:34
Last Healthy
2026-10-27 23:28:34
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"url": "https://api.firstmention.uk/s/bizcal-api/day?country=US"
},
"type": "http"
}
Output Schema
{
"example": {
"accepts": [
{
"asset": "USDC",
"network": "base",
"payTo": "0x3CfD...",
"price_usd": 0.01,
"scheme": "exact"
}
],
"status": 402,
"url": "https://api.firstmention.uk/s/bizcal-api/day?country=US",
"verdict": "ok",
"warnings": [],
"x402": true
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-27 23:28:34 | healthy | 402 | 105ms | |
| 2026-10-27 22:28:28 | healthy | 402 | 1119ms | |
| 2026-10-27 21:26:29 | healthy | 402 | 295ms | |
| 2026-10-27 20:13:14 | healthy | 402 | 93ms | |
| 2026-10-27 19:09:38 | healthy | 402 | 50ms |