Heuristic calls-vs-unique-payers pattern score for the top x402 resources in the
Heuristic calls-vs-unique-payers pattern score for the top x402 resources in the CDP Bazaar and PayAI catalogs: per resource price_usdc, unique_payers, calls, wash_risk (low/medium/high) and a reason. No input. A heuristic signal for due diligence before spending, not a finding about any seller. Cached 15 minutes.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
170 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://x402-niche-briefs.fly.dev/v1/listing-quality
| Category | Everything else |
|---|---|
| Provider host | x402-niche-briefs.fly.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.01 | 170 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"as_of": {
"type": "string"
},
"items": {
"items": {
"properties": {
"calls": {},
"note": {
"type": "string"
},
"price_usdc": {},
"resource": {
"type": "string"
},
"unique_payers": {},
"wash_risk": {
"type": "string"
}
},
"required": [
"resource",
"price_usdc",
"unique_payers",
"calls",
"wash_risk",
"note"
],
"type": "object"
},
"type": "array"
},
"source": {
"type": "string"
}
},
"required": [
"as_of",
"source",
"items"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}