Fetch a public URL once, right now, and evaluate a condition against it (keyword, CSS sele
Fetch a public URL once, right now, and evaluate a condition against it (keyword, CSS selector, JSON path, price threshold, content hash, or HTTP status). Returns matched:true/false with the extracted value and a short evidence excerpt. Synchronous; typical response under 3 seconds. $0.01 per check.
10000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-03
updated
Provider
stumble.vimabrosta.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xd63e74bCB00757C8fDb1817F1558ed8b97C608b6",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 120
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "8c9r8kxtkcsv7wARq3wBy2csm1ySRQQmdy6hrPnga4qs",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "10000",
"maxTimeoutSeconds": 120
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "8c9r8kxtkcsv7wARq3wBy2csm1ySRQQmdy6hrPnga4qs",
"asset": "So11111111111111111111111111111111111111112",
"amount": "100740",
"maxTimeoutSeconds": 120
}
]Output schema
{
"bazaar": {
"discoverable": true,
"info": {
"input": {
"body": {
"condition": {
"keyword": "sold out",
"type": "keyword",
"when": "disappears"
},
"url": "https://shop.example/product"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"evidence": {
"checked_at": 1790000000,
"excerpt": "...",
"http_status": 200
},
"matched": false,
"receipt": {
"price": "$0.01",
"product": "check"
},
"value": "present"
},
"type": "json"
}
},
"name": "Stumble",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"condition": {
"properties": {
"type": {
"enum": [
"keyword",
"selector",
"json_path",
"price",
"content_change",
"status"
],
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
},
"url": {
"format": "uri",
"type": "string"
}
},
"required": [
"url",
"condition"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"monitoring",
"watch",
"webhook",
"wake",
"scheduler",
"inbox",
"callbacks",
"alerts"
]
}
}Use it
curl
curl "https://stumble.vimabrosta.com/v1/checks" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://stumble.vimabrosta.com/v1/checks");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://stumble.vimabrosta.com/v1/checks")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/13594.json, and this resource appears in /discovery/resources and /discovery/search.