# Website Change Monitor (`vedder1980/website-change-monitor`) Actor

Monitor critical web pages for meaningful changes and generate a clean change log for alerts, competitor tracking, and content watchlists.

- **URL**: https://apify.com/vedder1980/website-change-monitor.md
- **Developed by:** [Daniel Ferreira de Almeida](https://apify.com/vedder1980) (community)
- **Categories:** Lead generation, Automation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.50 / 1,000 results

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

## Website Change Monitor

Stop missing important page changes.

Website Change Monitor tracks critical pages and returns a clean change log whenever content, title, or status changes.

### Best for

- competitor tracking
- pricing page monitoring
- policy / terms / compliance pages
- content freshness checks
- lead workflow watchlists

### What you get

- URL and final URL
- HTTP status code
- title
- change status: `new`, `unchanged`, `changed`, `error`
- changed fields
- content hash
- text preview
- optional raw HTML and snapshot data

### How it works

1. Send one or more URLs.
2. The Actor fetches each page.
3. It compares the current state with the previous snapshot.
4. It stores a deterministic result for the next run.

### Why buyers choose it

- narrow and easy to understand
- low-cost recurring runs
- deterministic output
- minimal maintenance
- good fit for monitoring workflows

### Example input

```json
{
  "urls": ["https://example.com"],
  "includeSnapshot": true,
  "maxTextChars": 3000,
  "timeoutSecs": 30
}
```

### Notes

This Actor is intentionally lightweight, predictable, and cheap enough to run regularly.
It is designed for recurring monitoring, alerting, and simple downstream automation.

# Actor input Schema

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

Pages to monitor.

## `includeSnapshot` (type: `boolean`):

Include the current snapshot object in the output.

## `includeRawHtml` (type: `boolean`):

Store the raw HTML snapshot in the output.

## `maxTextChars` (type: `integer`):

Maximum number of characters stored in the text preview.

## `timeoutSecs` (type: `integer`):

Maximum time allowed per page request.

## `webhookUrl` (type: `string`):

Optional webhook endpoint to receive alert payloads.

## `runLabel` (type: `string`):

Optional label for tracking your monitor runs.

## Actor input object example

```json
{
  "urls": [
    "https://example.com"
  ],
  "includeSnapshot": false,
  "includeRawHtml": false,
  "maxTextChars": 3000,
  "timeoutSecs": 30
}
```

# Actor output Schema

## `dataset` (type: `string`):

Change records stored in the default dataset.

# 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://example.com"
    ],
    "includeSnapshot": false,
    "includeRawHtml": false,
    "maxTextChars": 3000
};

// Run the Actor and wait for it to finish
const run = await client.actor("vedder1980/website-change-monitor").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://example.com"],
    "includeSnapshot": False,
    "includeRawHtml": False,
    "maxTextChars": 3000,
}

# Run the Actor and wait for it to finish
run = client.actor("vedder1980/website-change-monitor").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).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://example.com"
  ],
  "includeSnapshot": false,
  "includeRawHtml": false,
  "maxTextChars": 3000
}' |
apify call vedder1980/website-change-monitor --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=vedder1980/website-change-monitor",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/acts/yte8PYL71vQH7uKxr/builds/OJ7Yx9lfNpRM1fySK/openapi.json