# Stumble Standard Watch

> 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.

## Facts

- Endpoint: POST https://stumble.vimabrosta.com/v1/watches/standard
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stumble-standard-watch-fcc0ce68
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bsJoDYhap3nw62MzAAHXs

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stumble-standard-watch-fcc0ce68 -d '<json body>'
```

Example prompt: Watch https://store.example.com/product/sneakers every 15 minutes for up to 7 days and hit my webhook at https://hooks.myapp.com/notify the moment the price drops below $80 — I'll pay the $0.10 to set it up.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "type": "object",
     "required": [
      "url",
      "condition"
     ],
     "properties": {
      "url": {
       "type": "string",
       "format": "uri"
      },
      "condition": {
       "type": "object",
       "required": [
        "type"
       ],
       "properties": {
        "type": {
         "type": "string",
         "enum": [
          "keyword",
          "selector",
          "json_path",
          "price",
          "content_change",
          "status",
          "sitemap",
          "feed"
         ]
        }
       }
      },
      "notify": {
       "type": "object",
       "required": [
        "mode"
       ],
       "properties": {
        "mode": {
         "type": "string",
         "enum": [
          "webhook",
          "poll"
         ]
        },
        "url": {
         "type": "string"
        },
        "format": {
         "type": "string",
         "enum": [
          "json",
          "slack",
          "discord"
         ]
        }
       }
      },
      "duration_days": {
       "type": "number",
       "maximum": 14
      }
     }
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "required": [
    "type"
   ]
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stumble-standard-watch-fcc0ce68/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stumble.vimabrosta.com](https://www.zero.xyz/host/stumble.vimabrosta.com/llms.txt)