Agent sends ISBN -> gets {valid, isbn10, isbn13, check_digit}
https://x402.aurelianflo.com/api/do/util/isbnOverview
Agent sends ISBN -> gets {valid, isbn10, isbn13, check_digit}
Protocol
x402
Price
$0.0030
Payment Asset
USD Coin
Payment Network
Base
Category
tools/utilities
Provider
x402
Source
bazaar
Indexed
2026-03-30 13:49:24
Health
Status
degraded
Latency (p50)
190ms
Uptime (30d)
100.0%
Reliability Score
100/100
Last Checked
2026-05-27 04:52:11
Last Healthy
2026-04-02 20:14:16
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Invalid
Asset Verified
—
Facilitator
—
Input Schema
{
"discoverable": true,
"method": "POST",
"type": "http"
}
Output Schema
{
"data": {
"endpoint": "/api/do/util/isbn",
"handlerMode": "auto_local",
"previewToken": "389-isbn-validate",
"tool": "ISBN Validate"
},
"source": "auto-local-engine",
"success": true
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-05-27 04:52:11 | degraded | 404 | 173ms | |
| 2026-05-26 15:52:33 | degraded | 404 | 179ms | |
| 2026-05-26 07:27:11 | degraded | 404 | 176ms | |
| 2026-05-26 00:02:54 | degraded | 404 | 221ms | |
| 2026-05-25 16:56:51 | degraded | 404 | 190ms | |
| 2026-05-25 04:58:38 | degraded | 404 | 230ms | |
| 2026-05-24 14:15:38 | degraded | 404 | 197ms |