# Price Monitor (`unicentrocucuta/product-price-watch`) Actor

Price monitor for public HTML product pages. Emits a row when price or availability changes. $0.05 per start.

- **URL**: https://apify.com/unicentrocucuta/product-price-watch.md
- **Developed by:** [daniel vera](https://apify.com/unicentrocucuta) (community)
- **Categories:** E-commerce, Automation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $0.05 / actor start

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Product Price Tracker

**Product price tracker** and **price monitor** for public product pages. Each run extracts price, stock / availability, and seller (when the HTML exposes them) and emits a row when that **offer** changes — not when the whole page HTML twitches.

Use this price tracker for public HTML product URLs. It does **not** log into Amazon, Noon, or Home Depot and does not beat anti-bot walls. If the URL returns public HTML with a price, the product price scraper works.

Pay-per-event: **$0.05 per Actor start** + **$0.002 per result**.

### Price monitor — input

| Field | Required | Notes |
|---|---|---|
| `urls` | yes | 1–30 `https://` product or pricing URLs |

```json
{
  "urls": [
    "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"
  ]
}
```

### Output example

```json
{
  "url": "https://example.com/p/sku",
  "change": "changed",
  "price": "19.99",
  "currency": "USD",
  "availability": "InStock",
  "seller": null,
  "observed_at": "2026-08-13T15:00:00Z"
}
```

`change` is `baseline` (first seen), `changed`, or `unchanged`.

### How to run this product price tracker

Schedules → every 30–120 minutes. First run is baseline. Later runs are the product.

### Pricing

**$0.05** when the Actor starts + **$0.002** per dataset item.

### Limits

- Public HTTPS HTML only. Login walls, 403, and heavy JS stores will fail — that is expected.
- Price is parsed from JSON-LD / meta / visible currency amounts. Garbled pages → null price + still tracks availability text when present.
- Not affiliated with Amazon, Noon, Shopify, or any marketplace.

### Related monitors

- [Website Change Monitor](https://apify.com/unicentrocucuta/url-change-watch)
- [App Store Reviews Scraper](https://apify.com/unicentrocucuta/appstore-watch)
- [RSS Feed Scraper — New Items](https://apify.com/unicentrocucuta/rss-new-item-watch)
- [GitHub Issues and PR Monitor](https://apify.com/unicentrocucuta/pr-watch-feed)
- [Greenhouse Jobs Scraper](https://apify.com/unicentrocucuta/greenhouse-job-watch)
- [URL Snapshot Archive](https://apify.com/unicentrocucuta/public-source-archive-tick)

Brand: **TemporalOps**.

# Actor input Schema

## `urls` (type: `array`):

Public HTTPS product or pricing pages (max 30). Works best when the page includes JSON-LD price or visible $ / € / AED.

## Actor input object example

```json
{
  "urls": [
    "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"
  ]
}
```

# Actor output Schema

## `url` (type: `string`):

No description

## `change` (type: `string`):

No description

## `price` (type: `string`):

No description

## `currency` (type: `string`):

No description

## `availability` (type: `string`):

No description

## `seller` (type: `string`):

No description

## `name` (type: `string`):

No description

## `observed_at` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "urls": [
        "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("unicentrocucuta/product-price-watch").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "urls": ["https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"] }

# Run the Actor and wait for it to finish
run = client.actor("unicentrocucuta/product-price-watch").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "urls": [
    "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"
  ]
}' |
apify call unicentrocucuta/product-price-watch --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,unicentrocucuta/product-price-watch"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/KLQAY3gYImbTZZg62/builds/8MoJBTm0F9cTqofYG/openapi.json