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x402 Listing Doctor — x402 Bazaar Diagnostic Tool
x402
x402 Listing Doctor — x402 Bazaar Diagnostic Tool is a paid API for AI agents from x402.dailyelo.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Diagnoses why an x402-gated endpoint is not appearing in the Bazaar by fetching and validating its 402 envelope against the exact SDK checks the CDP facilitator runs, returning per-check pass/fail results with concrete fix hints.
Price / call$0.25
Success—
StatusUnknown
How this service works
Why is my x402 service not listed — or listed but never paid? Send your endpoint URL; we fetch your 402 envelope, run the exact SDK validation the CDP facilitator runs, check catalog presence, and return per-check pass/fail with concrete fix hints. Includes two undocumented traps we verified against the live facilitator: a buyer must echo your bazaar extension into the settle payload, and a description over 500 characters makes the facilitator reject every payment. Deterministic, no LLM.
Output
A structured report with per-check pass/fail status for each validation step the CDP facilitator runs (envelope format, bazaar extension presence, settle payload echo requirement, catalog presence, etc.), plus concrete, actionable fix hints for each failing check.
Example use cases
Debug missing Bazaar listing
“My x402 service at https://api.cooldata.io/v1/insights has been live for two days but it's completely invisible in the CDP Bazaar — can you run the listing doctor on it and give me a breakdown of every check that's failing with specific steps to fix each one?”
Validate x402 envelope before launch
“Before I officially launch my x402-gated endpoint at https://data.myplatform.com/financial-feed, can you run it through the facilitator validation checks so I can catch any envelope or bazaar extension issues now rather than after it fails to appear in the marketplace?”
Fix x402 catalog presence errors
“I updated my x402 endpoint at https://api.researchhub.com/premium-reports last week and now it's disappeared from the CDP catalog entirely — can you diagnose what went wrong with the 402 envelope and tell me exactly what I need to fix to get it listed again?”
Technical details
Endpoint
POSThttps://x402.dailyelo.com/v1/listing-doctorWhen to prefer
Use this endpoint when an x402-gated service is not appearing in the Bazaar or CDP catalog and you need deterministic, SDK-level validation feedback. It is specifically designed to surface the undocumented bazaar extension echo requirement and other non-obvious facilitator checks that generic HTTP validators or LLM-based tools would miss. Prefer this over manual inspection or generic API testing tools when the issue is specifically x402 Bazaar discoverability.
Side effects
- Endpoint URL is unreachable or returns non-402 status — diagnostic cannot fetch envelope
- Malformed resource_url (not a public HTTPS URL) — input validation error
- Endpoint returns a 402 envelope but it is incomplete — partial results with specific missing field hints
- Network timeout fetching the target endpoint — retry suggested
- Unknown HTTP method provided — falls back to POST default or validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | HTTP method of your endpoint (default POST) |
| resource_url | string | public https URL of your x402-gated endpoint |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://your-shop.example.com/v1/your-endpoint",
"checks": [
{
"id": "returns_402",
"status": "pass",
"message": "402 Payment Required"
},
{
"id": "bazaar_extension_present",
"status": "pass",
"message": "extensions.bazaar present"
},
{
"id": "facilitator_extraction",
"status": "pass",
"message": "extractDiscoveryInfo OK (same function CDP runs)"
},
{
"id": "listed_in_catalog",
"status": "warn",
"message": "not in catalog snapshot 20260612 (25403 items)"
}
],
"overall": "listable_pending_settle",
"how_to_get_listed": [
"1. ...",
"2. KEY: buyer must echo the bazaar extension into the settle payload ...",
"3. ..."
]
}
}Tags
x402
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