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402Check — x402 Endpoint Audits for Agents
x402
402Check — x402 Endpoint Audits for Agents is a paid API for AI agents from agent-json-utility.pablovph.chatgpt.site, paid per call via x402, $20/call, status unknown (last checked 2026-09-14).
Audits a public HTTPS origin for x402 payment protocol compliance and agent-discovery compatibility, returning a scored report with findings and prioritized fixes.
Price / call$20
Success—
StatusUnknown
How this service works
Audit any x402 payment endpoint for protocol and discovery compatibility.
Output
Returns a JSON object with a boolean 'ready' flag, a numeric score (0–100), the audited origin, a human-readable summary, an array of findings (each with an id, passed status, message, and severity), the count of paid routes found, per-endpoint audit details, and a prioritized list of fixes to address before launch.
Example use cases
Pre-launch x402 API readiness check
“I'm about to launch my paid API at https://payments.myapp.io — can you run an x402 audit on it and tell me if it's agent-discovery ready and what the score is?”
Debugging failed x402 probe in bazaar
“My endpoint at https://api.acmecorp.dev keeps failing the x402 probe on bazaar — can you audit it and show me exactly which findings are errors so I know what to fix?”
Verifying OpenAPI and paid route compliance
“Can you check whether https://api.devtools.run has a parseable OpenAPI 3.1 document and that its paid routes are passing x402 runtime probes? I need to see the full findings list.”
Technical details
Endpoint
POSThttps://agent-json-utility.pablovph.chatgpt.site/v1/launch-reportWhen to prefer
Choose this endpoint when you need a structured, scored compliance report specifically for the x402 payment protocol — especially before listing an endpoint on a facilitator or agent marketplace like bazaar. It goes beyond a simple HTTP probe by also checking OpenAPI discoverability, route-level runtime probes, and returning actionable prioritized fixes, making it ideal for developers preparing to launch or debug x402-compatible paid APIs.
Side effects
- Origin URL is not publicly reachable — audit cannot fetch OpenAPI spec or probe routes
- Origin has no x402 routes — report returns zero paidRoutes and a low score
- OpenAPI document is malformed or inaccessible — openapi finding fails with severity:error
- TLS/HTTPS issues on the target origin cause probe failures
- Rate limiting or firewall on the target origin blocks the audit probes
- Invalid URI format passed as origin — request rejected with validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| origin | string | Public HTTPS origin whose OpenAPI and x402 routes should be audited |
Output
Schema · Response
{
"type": "json",
"example": {
"ready": true,
"score": 94,
"origin": "https://api.example.com",
"summary": "Launch-ready: two paid routes passed discovery and runtime probes.",
"findings": [
{
"id": "openapi",
"passed": true,
"message": "OpenAPI 3.1 document is public and parseable",
"severity": "error"
}
],
"paidRoutes": 2,
"endpointAudits": [],
"prioritizedFixes": []
}
}Tags
x402
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