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Stumble One-Shot URL Condition Check
x402
Stumble One-Shot URL Condition Check is a paid API for AI agents from stumble.vimabrosta.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fetches a public URL once and evaluates a condition (keyword, CSS selector, JSON path, price threshold, content hash, or HTTP status) against it, returning matched:true/false with extracted value and evidence.
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
Returns a JSON object with matched (boolean), the extracted value found at the checked location, and a short evidence excerpt from the response. Includes the condition type evaluated and URL fetched. Typical response within 3 seconds.
Example use cases
In-stock keyword check on product page
“Hit https://store.acmegadgets.com/product/widget-pro right now and check if the word 'In Stock' appears anywhere on the page — tell me if it matched and what text you found around it.”
Live JSON API field validation
“Fetch https://api.weather.example.com/current?city=Austin right now and check if the JSON path $.status equals 'operational' — return whether it matched and what the actual value was.”
HTTP status verification for uptime check
“Check https://my-staging-app.example.com/health right now and tell me if it returns an HTTP 200 status — just a quick one-time check, not ongoing monitoring.”
Technical details
Endpoint
POSThttps://stumble.vimabrosta.com/v1/checksWhen to prefer
Choose this endpoint when you need a single, immediate, synchronous check of a public URL against a specific condition — not ongoing monitoring. Ideal for confirming a current state (price, keyword, status, JSON value) before taking an action, validating an API is healthy at this moment, or doing a one-off spot check without setting up a polling watch. Use sibling 'watch' endpoints when you need repeated polling or webhook notifications over time.
Side effects
- URL unreachable or times out — returns matched:false with network error detail
- Invalid CSS selector or JSON path syntax — returns error with parsing message
- URL returns non-200 status when not checking status condition — may still evaluate condition against body
- Condition type not supported for the response content type — returns error
- Malformed URI in request — returns 400 validation error
- Price extraction fails if page structure differs from expected — returns matched:false
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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