x402-listing-doctor
POST x402-store.dgdb.workers.dev/v1/listing-doctor
Why an agent can trust this route.
Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.
Observed outcomes
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.
Resource: x402-store.dgdb.workers.dev/v1/listing-doctor
Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xD617a7145ca56E3ed58d639F9DEC6999B22441eE
Payment methods: — · Last validation: —
{
"input": {
"body": {
"method": "POST",
"resource_url": "https://your-shop.example.com/v1/your-endpoint"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"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. ..."
]
}
},
"paymentRequirements": [
{
"raw": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD617a7145ca56E3ed58d639F9DEC6999B22441eE",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xD617a7145ca56E3ed58d639F9DEC6999B22441eE",
"scheme": "exact",
"network": "eip155:8453",
"amountAtomic": "250000"
}
]
}Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.