Watch one field on a web page for 30 days, e.g
Watch one field on a web page for 30 days, e.g. a price, stock status or version number: it is read again every 15 to 1440 minutes and an alert goes to your webhook, Slack, Discord or Telegram when it changes, goes below or above a number, contains a text, or disappears. Returns the current value now; check status or stop it for free with the watch secret.
Answeringour last check, 2026-10-26
1 of 1checks answered this week
31 msmedian answer time
$0.1listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agent-toolbox.zafermemon87.workers.dev/v1/watch
| Category | Market data |
|---|---|
| Provider host | agent-toolbox.zafermemon87.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-26 | valid payment request | 402 | $0.1 | 31 ms |
Example input (from the provider)
{
"body": {
"description": "the price including tax",
"field": "price",
"url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html",
"value": 40,
"when": "below"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"callback_url": {
"description": "Optional https URL for alerts (a signed JSON POST); Slack and Discord incoming webhooks and https://api.telegram.org/bot<token>/sendMessage?chat_id=<id> get a readable message. Without it, poll the status.",
"type": "string"
},
"description": {
"description": "What the field is, e.g. the current price of the product",
"type": "string"
},
"every_minutes": {
"description": "How often the page is read (default 60)",
"maximum": 1440,
"minimum": 15,
"type": "integer"
},
"field": {
"description": "A short name for the field, e.g. price",
"type": "string"
},
"format": {
"description": "Detected from the callback host when left out",
"enum": [
"json",
"slack",
"discord",
"telegram"
],
"type": "string"
},
"label": {
"description": "Optional name for your own reference",
"type": "string"
},
"type": {
"description": "The field's type (number for below and above)",
"enum": [
"string",
"number",
"integer",
"boolean"
],
"type": "string"
},
"url": {
"description": "A public http(s) URL",
"type": "string"
},
"value": {
"description": "The number for below/above, or the text for contains"
},
"when": {
"description": "Default changes; below and above compare numbers; contains looks for text in the value; gone fires when the field is no longer on the page",
"enum": [
"changes",
"below",
"above",
"contains",
"gone"
],
"type": "string"
}
},
"required": [
"url",
"field"
],
"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"
}