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Stumble Standard Watch
x402
Stumble Standard Watch is a paid API for AI agents from stumble.vimabrosta.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Polls a public URL every 15 minutes for up to 14 days and notifies your webhook or poll endpoint the moment a specified condition (keyword, CSS selector, JSON path, price threshold, content change, or HTTP status) becomes true, for a one-time $0.10 fee.
Price / call$0.1
Success—
StatusUnknown
How this service works
Create a watch: Stumble polls a public URL every 15 minutes for up to 14 days and notifies your webhook (or lets you poll for free) the moment a condition becomes true (keyword, CSS selector, JSON path, price threshold, content change, HTTP status). One-time $0.10, no account needed. Ideal for price drops and slow-moving pages.
Output
Returns a watch ID and confirmation that the polling job has been created. Once the condition becomes true during polling, Stumble either fires a POST to your webhook URL with the match details (in JSON, Slack, or Discord format) or makes the result available for you to poll, depending on the notification mode chosen.
Example use cases
Price drop alert for e-commerce
“Set up a 14-day watch on https://www.bestbuy.com/product/tv-55 and send a webhook to https://hooks.myapp.com/deals the moment the price goes below $400 — poll it every 15 minutes.”
Keyword appearance on news page
“Watch https://news.ycombinator.com for up to 5 days and notify my webhook at https://hooks.mine.io/hn when the keyword 'GPT-5' appears anywhere on the page.”
JSON API value change detection
“Monitor https://api.myservice.com/status every 15 minutes for 3 days using a JSON path condition, and ping my webhook at https://hooks.myapp.com/status-change when the 'state' field changes to 'ready'.”
Technical details
Endpoint
POSThttps://stumble.vimabrosta.com/v1/watches/standardWhen to prefer
Choose this endpoint when you need to monitor a slow-moving or infrequently updated page over days (up to 14 days) and 15-minute polling granularity is sufficient. It is the most cost-effective watch option for long-duration monitoring where near-real-time response is not critical. Prefer the sniper watch (10-second polling) for urgent or fast-changing targets, or the fast watch (60-second polling) for medium-frequency needs. Use this for price tracking, content-change detection, and keyword or JSON path watches on pages that update infrequently.
Side effects
- Target URL is not publicly accessible or returns non-200 status on creation — watch may never trigger
- Condition type misconfigured (e.g. wrong JSON path or CSS selector) — watch runs without ever matching
- Webhook URL is unreachable or returns errors — notifications silently fail
- Duration exceeds 14-day maximum — request rejected
- Payment of $0.10 USDC not completed — watch not created
- URL changes structure mid-watch, breaking selector or JSON path conditions
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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