x402 endpoint preflight
https://bountycheck.vercel.app/v1/x402/preflight?url=https://bountycheck-demo.example/paidOverview
Checks any x402 endpoint with one unpaid GET: is the payment challenge well-formed, what does it charge (decoded price, network, payTo), and what is wrong with it.
Protocol
x402
Price
$0.01
Payment Asset
USDC
Payment Network
eip155:8453
Category
developer-tools
Provider
BountyCheck
Source
self-registered
Indexed
2026-10-02 19:49:36
Health
Status
healthy
Latency (p50)
167ms
Uptime (30d)
85.7%
Reliability Score
89.9/100
Last Checked
2026-10-07 04:29:57
Last Healthy
2026-10-07 04:29:57
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-07 04:29:57 | healthy | 402 | 210ms | |
| 2026-10-07 01:36:21 | healthy | 402 | 156ms | |
| 2026-10-06 00:15:02 | healthy | 402 | 151ms | |
| 2026-10-05 16:10:42 | healthy | 402 | 162ms | |
| 2026-10-05 02:18:03 | healthy | 402 | 180ms | |
| 2026-10-04 22:04:01 | healthy | 402 | 168ms | |
| 2026-10-04 13:21:50 | down | 502 | 167ms | HTTP 502 |