Census of automated x402 monitors and index crawlers observed polling a Bazaar l
Census of automated x402 monitors and index crawlers observed polling a Bazaar listing on Base mainnet: user-agent prefix, operator URL, stated purpose, class (monitor or crawler), quotes served in the observation week. Updated weekly from live terminal logs.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
1498 msmedian answer time
$0.25listed price per call
$0.25price 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://store-production-8add.up.railway.app/v1/probers
| Category | Commerce and shopping |
|---|---|
| Provider host | store-production-8add.up.railway.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.25 | 1498 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$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": {
"properties": {
"count": {
"description": "Number of distinct named probers",
"type": "integer"
},
"observedFrom": {
"description": "First day of the observation window, ISO date",
"type": "string"
},
"observedTo": {
"description": "Last day of the observation window, ISO date",
"type": "string"
},
"probers": {
"items": {
"properties": {
"class": {
"description": "monitor (reads the price, never pays) or crawler (index or search)",
"type": "string"
},
"days": {
"description": "Distinct days seen in the window",
"type": "integer"
},
"match": {
"description": "User-agent prefix that identifies the prober",
"type": "string"
},
"name": {
"type": "string"
},
"operator": {
"description": "Operator URL from the user-agent string, if given",
"type": [
"string",
"null"
]
},
"purpose": {
"description": "What the user-agent string says about itself",
"type": [
"string",
"null"
]
},
"quotes": {
"description": "402s served to this prober in the window",
"type": "integer"
}
},
"type": "object"
},
"type": "array"
}
},
"required": [
"observedFrom",
"observedTo",
"count",
"probers"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}