x402 Endpoint Check: verifies that a seller's x402 endpoint is alive and payable...
https://a-upgradenet.com/x402/endpoint-checkOverview
x402 Endpoint Check: verifies that a seller's x402 endpoint is alive and payable before you spend. Use before paying an unknown endpoint, or to monitor your own. Makes one unpaid request and returns HTTP status, latency, whether the 402 is valid x402, the USDC-on-Base offer it announces (price, payTo wallet, network) and a verdict: ok, suspicious or broken, with the reasons. Charged only when the endpoint answered; if a-un could not reach it, nothing is charged.
Protocol
x402 (POST)
Price
$0.0010
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/wallet
Provider
a-un
Source
bazaar
Indexed
2026-11-01 05:05:56
Health
Status
unknown
Latency (p50)
—
Uptime (30d)
—
Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
—
Asset Verified
—
Facilitator
—
Input Schema
{
"body": {
"body": {
"url": "https://example.com"
},
"method": "POST",
"url": "https://a-upgradenet.com/x402/web-read"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"all_networks": [
"eip155:8453"
],
"checked_at": "2026-10-31T20:00:00.000Z",
"content_type": "application/json",
"http_status": 402,
"is_x402": true,
"issues": [],
"latency_ms": 412,
"method": "POST",
"offer": {
"amount_atomic": 5000,
"asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"description": "Web Page Reader…",
"network": "eip155:8453",
"pay_to": "0xbdae34e121dff6da6fbb71208322e8be0a923512",
"price_usdc": 0.005,
"scheme": "exact"
},
"reachable": true,
"status": "completed",
"url": "https://a-upgradenet.com/x402/web-read",
"verdict": "ok",
"x402_version": 2
},
"type": "json"
}