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Stumble Fast Watch
x402
Stumble Fast Watch is a paid API for AI agents from stumble.vimabrosta.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).
Polls a public URL every 60 seconds for up to 7 days and notifies via webhook or poll when a specified condition (keyword, selector, JSON path, price, content change, or HTTP status) becomes true
Price / call$0.5
Success—
StatusUnknown
How this service works
Create a fast watch: Stumble polls a public URL every 60 seconds for up to 7 days and notifies your webhook (or lets you poll for free) the moment a condition becomes true (keyword, selector, JSON path, price, content change, HTTP status). One-time $0.50, no account needed. Ideal for restocks and appointment slots.
Output
Returns a watch ID and confirmation that the fast-polling watch has been created. Stumble then polls the target URL every 60 seconds and, when the specified condition becomes true, either calls your webhook URL with a JSON/Slack/Discord payload or makes the result available for you to poll, depending on the notification mode selected.
Example use cases
Sneaker restock alert
“Monitor https://shop.nike.com/product/air-max-limited every 60 seconds for 5 days and fire a webhook to https://hooks.myapp.com/notify in JSON format the moment the keyword 'In Stock' shows up on the page.”
Doctor appointment slot detection
“Watch https://booking.clinic.com/appointments every minute for 2 days — use a CSS selector like '.slot-available' and POST to my webhook at https://myserver.io/appt-alert in JSON format the instant a slot appears.”
Price drop monitoring
“Poll https://api.retailer.com/products/123/price every 60 seconds for up to 7 days and hit my webhook at https://hooks.me/price in JSON format as soon as the price condition is triggered.”
Technical details
Endpoint
POSThttps://stumble.vimabrosta.com/v1/watches/fastWhen to prefer
Choose this endpoint over the standard watch (15-min polling) when you need near-real-time detection — such as limited-quantity restocks, appointment slots that fill within minutes, or rapid status changes. The 60-second polling interval costs $0.50 USDC flat with no account required. If you need even faster detection (10-second polling) use the sniper watch; if 15-minute polling is sufficient, the standard watch is more economical.
Side effects
- Target URL is unreachable or returns non-200 status consistently — watch may never trigger
- Condition type misconfigured (e.g. wrong JSON path syntax) — condition never matches
- Webhook URL is unreachable when condition fires — notification is lost
- Duration exceeds 7-day maximum — request rejected
- URL is not a public endpoint — polling fails with connection errors
- Payment of $0.50 USDC not received — watch not created
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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