Competitor Price & Page Change Monitor

Watch competitor product, pricing and landing pages. Each run captures price, title and main text, stores a snapshot in a named key-value store, and outputs exactly what changed since the last run: price, title and added/removed text.

Why this Actor

• Pay only for results: $0.005 per page checked. No start fee, no monthly rental. Set a max charge per run and it stops there.
• Fast and reliable: public, documented sources and plain HTTP. No headless browser, no login, no personal data.
• Clean output: one consistent row format, ready for Sheets, Clay, Zapier, Make or the Apify API.

How to use

Example use cases

1. Ecommerce pricing: check competitor product pages daily and get only the price/stock changes.
2. Marketing teams: watch rival pricing, features and landing pages for messaging changes.
3. Compliance & legal: monitor terms, policy or disclosure pages and keep a diff history.

Steps: 1) Click Try for free — the form is pre-filled with the example below. 2) Press Start. 3) Download results as JSON, CSV or Excel, or connect them to Sheets, Zapier, Make or Slack. Schedule it to run daily/weekly.

Example input (the prefilled form):

{"urls": ["https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"], "maxDiffLines": 10, "maxTextLines": 50}

Sample output (first row of a real run on 2026-10-15, long fields trimmed):

{
 "url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html",
 "checkedAt": "2026-10-15T21:52:29+00:00",
 "status": 200,
 "title": "A Light in the Attic | Books to Scrape - Sandbox",
 "price": 51.77,
 "currency": "GBP",
 "changed": false,
 "changeType": "first-snapshot",
 "previousCheckAt": null,
 "textLines": 19,
 "textPreview": "A Light in the Attic | £51.77 | In stock (22 available) | 0 customer reviews | --> | Write a review | --> |..."
}

Pricing: pay per event — $0.005 per page checked. No monthly rental; you only pay for results. Set a max charge per run to cap spend.

Input example

{"urls":["https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html","https://www.scrapingcourse.com/ecommerce/product/abominable-hoodie/"],"storeName":"my-competitors","outputOnlyChanges":false}

Output example

[
  {
    "url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html",
    "checkedAt": "2026-10-15T00:31:15+00:00",
    "status": 200,
    "title": "A Light in the Attic | Books to Scrape - Sandbox",
    "price": 51.77,
    "currency": "GBP",
    "changed": false,
    "changeType": "none",
    "previousCheckAt": "2026-10-15T00:31:14+00:00",
    "previousTitle": null,
    "previousPrice": 51.77,
    "priceChange": null,
    "priceChangePct": null,
    "addedLines": [],
    "removedLines": [],
    "addedCount": 0,
    "removedCount": 0,
    "textSimilarity": 1.0
  },
  {
    "url": "https://www.scrapingcourse.com/ecommerce/product/abominable-hoodie/",
    "checkedAt": "2026-10-15T00:31:15+00:00",
    "status": 200,
    "title": "Abominable Hoodie \u2013 Ecommerce Test Site to Learn Web Scraping",
    "price": 69.0,
    "currency": "USD",
    "changed": true,
    "changeType": "text",
    "previousCheckAt": "2026-10-15T00:31:14+00:00",
    "previousTitle": null,
    "previousPrice": 69.0,
    "priceChange": null,
    "priceChangePct": null,
    "addedLines": [
      "Stark Fundamental Hoodie",
      "$ 42.00",
      "Ajax Full-Zip Sweatshirt"
    ],
    "removedLines": [
      "Hero Hoodie",
      "$ 54.00",
      "Teton Pullover Hoodie",
      "$ 70.00"
    ],
    "addedCount": 3,
    "removedCount": 4,
    "textSimilarity": 0.966
  }
]

Pricing

Event	Price
Page checked (page-checked)	$0.005

Example: 1,000 results cost $5.0.

Notes

Uses only publicly available data and official public endpoints. Please respect each source's terms of use. Questions or feature requests: open an issue on the Actor page.

Use it from AI agents (MCP)

This Actor works as a tool for AI agents. Add it to Claude, ChatGPT, Cursor or n8n through Apify's MCP server at https://mcp.apify.com (tool name: intuitive_ytterbium/competitor-page-watcher), or call it from LangChain / LlamaIndex / OpenAI Agents via the Apify integration. For several public-data tools in one MCP server, see Public Data MCP by the same author.

AI keywords: MCP tool, AI agent tool, Model Context Protocol, LLM function calling, Claude tool, ChatGPT tool.