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QuietSignal Catalog Health Check
x402
QuietSignal Catalog Health Check is a paid API for AI agents from 83-29-153-50.sslip.io, paid per call via x402, $0.01/call, status down (last checked 2026-10-12).
Returns HTTP liveness status and counts (alive, dead, timeout, 4xx, 5xx) for public PayanAgent offer endpoints from the QuietSignal catalog.
Price / call$0.01
Success—
StatusDown
How this service works
QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.
Output
A JSON object with a 'counts' breakdown (alive, dead, timeout, 4xx, 5xx), a schema version string ('catalog-health/v1'), source metadata identifying the provider as PayanAgent and the probe surface as the public buyUrl gateway, a 'results' array of probed endpoint details, a returned_count integer, and a disclaimer confirming no payments or seller executions were attempted.
Example use cases
Monitoring agent marketplace uptime
“Scan the QuietSignal public catalog and tell me how many PayanAgent offer endpoints are alive right now versus returning errors or timing out — check up to 100 of them.”
Debugging dead API offers
“I think some offers in the QuietSignal catalog are broken — can you pull the catalog health report and show me how many are returning 4xx or 5xx errors?”
Pre-flight check before agent workflow
“Before I start my agent workflow that calls PayanAgent buyUrls, can you run a quick liveness check on the QuietSignal catalog to confirm the gateway is healthy?”
Technical details
Endpoint
GEThttps://83-29-153-50.sslip.io/v1/catalog-health?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, read-only liveness snapshot of PayanAgent public offer endpoints without triggering any payments or seller-side execution. Prefer it over full catalog browsing when you only need aggregate health counts (alive/dead/timeout/error class) to decide whether the gateway is operational before committing to downstream agent calls.
Side effects
- Limit parameter out of range (1-100) returns validation error
- Network timeout if the sslip.io host is unreachable
- HTTP 402 payment required if USDC payment over x402 is not provided
- Empty results array if no public offers exist in the catalog
- Partial results if some gateway probes time out during the health sweep
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"counts": {
"4xx": 0,
"5xx": 0,
"dead": 0,
"alive": 1,
"timeout": 0
},
"schema": "catalog-health/v1",
"source": {
"provider": "PayanAgent",
"probe_surface": "public buyUrl gateway"
},
"results": [],
"disclaimer": "Unpaid HTTP liveness facts; no payment calls or seller execution were attempted.",
"returned_count": 1
}
}Tags
x402
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