# Website Change Intelligence API | 💵$1/1K (`webdata_labs/website-change-intelligence-api`) Actor

\[💵 $1.00 / 1K] Monitor public pricing, product, legal, and documentation pages. Detect meaningful changes with severity, price deltas, and before/after evidence.

- **URL**: https://apify.com/webdata_labs/website-change-intelligence-api.md
- **Developed by:** [WebData Labs](https://apify.com/webdata_labs) (community)
- **Categories:** Automation, Developer tools, SEO tools
- **Features:** Limited permissions
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 1 bookmarks
- **User rating**: No ratings yet

## Pricing

from $0.60 / 1,000 monitored page results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.
Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have.

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

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
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.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## 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.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

**Turn public web pages into a change feed your team can act on.** Website Change Intelligence API watches pricing, product, legal, changelog, and documentation pages, then returns meaningful changes with severity and before/after evidence.

### 🔎 What does Website Change Intelligence API do?

Give it public URLs and it creates a persistent baseline for each page. On later runs it detects changed text, added or removed prices, and classifies the result as `PRICING`, `PRODUCT`, `LEGAL`, `DOCUMENTATION`, or general `CONTENT`.

This is a monitoring API, not a bulk archive of raw HTML. It extracts readable public page content and returns compact evidence designed for alerts and downstream automation.

### ✅ Why use this website change monitor?

- Catch competitor price and packaging changes.
- Watch terms, privacy policies, and regulatory pages.
- Detect product launches, removed features, and documentation updates.
- Schedule recurring checks directly on Apify.
- Send results to webhooks, Slack, Make, Zapier, Google Sheets, or your data warehouse.
- Download structured results through the Apify API.

Temporary source failures do not overwrite the last good baseline, so an outage cannot create a false page change.

### 📊 What data can it extract?

| Field | Type | Description |
|---|---|---|
| `status` | string | `INITIALIZED`, `CHANGED`, or `UNCHANGED` |
| `changeType` | string | Pricing, product, legal, documentation, or content classification |
| `severity` | string | High, medium, low, or none |
| `changeScore` | number | Approximate percentage of page text that changed |
| `priceChanges` | array | Added and removed price tokens |
| `addedText`, `removedText` | array | Compact before/after evidence |
| `previousCheckedAt` | datetime | Previous successful baseline timestamp |

### ⚙️ How to monitor a website for changes

1. Add one or more public page URLs.
2. Give the watchlist a stable `monitorName`.
3. Choose whether pricing, product, legal, documentation, or all changes matter.
4. Run once to create the baseline.
5. Create an Apify schedule and reuse the same input.
6. Connect a webhook or integration to receive the change feed.

### 💵 How much does website monitoring cost?

The Actor costs **$1 per 1,000 output rows** on the Free and Bronze tiers, with lower rates on larger plans. One returned page result is one billable result. Platform compute is included. Disable `includeUnchanged` when you only want billable rows for detected changes, but keep it enabled if your workflow needs a heartbeat on every check.

### 📥 Input

See the Input tab for the full configuration. A simple competitor pricing monitor looks like this:

```json
{
  "monitorName": "competitor-pricing",
  "urls": [
    "https://apify.com/pricing",
    "https://openai.com/api/pricing/"
  ],
  "focus": "pricing",
  "includeUnchanged": true
}
```

The same `monitorName` and normalized URL always resolve to the same baseline. Change the monitor name when you intentionally want a fresh baseline.

### 📤 Output

You can download the dataset in JSON, HTML, CSV, or Excel.

```json
{
  "url": "https://example.com/pricing",
  "pageTitle": "Pricing",
  "status": "CHANGED",
  "changeType": "PRICING",
  "severity": "HIGH",
  "changeScore": 4.72,
  "priceChanges": [{"removed": ["$49/month"], "added": ["$59/month"]}],
  "addedText": ["Professional plan starts at $59/month."],
  "removedText": ["Professional plan starts at $49/month."]
}
```

### 🧩 Monitoring recipes

#### Competitor pricing intelligence

Use pricing and plan URLs, set `focus` to `pricing`, and schedule daily. High-severity results include detected price additions or removals.

#### Terms and privacy policy monitoring

Use terms, privacy, cookie, and acceptable-use URLs with `focus` set to `legal`. Route changed rows to your compliance review queue.

#### Product and documentation monitoring

Watch feature pages, changelogs, API docs, and migration guides. Run hourly or daily depending on how quickly your team needs the signal.

### ⚠️ Limits and caveats

- The Actor monitors server-rendered public HTML. Pages whose useful content appears only after browser-side JavaScript may return limited text.
- A changed navigation template can affect many pages. The extractor removes common headers, navigation, footers, cookie notices, and scripts to reduce this noise.
- Price detection is evidence, not accounting advice. Currency formatting and promotional copy vary.
- Use a stable page URL. Redirects are followed, while URL fragments are ignored.
- Respect website terms, robots policies, copyright, and applicable law. Only public content is read; no login or private user data is requested.

### 🧩 Related Actors

- [PDF Text Extractor](https://apify.com/webdata_labs/pdf-text-extractor) - get clean text out of multi-column and scanned PDFs.
- [Tech Stack Detector](https://apify.com/webdata_labs/website-tech-stack-detector) - find the tools and platforms a site runs on.
- [AI Crawler Policy Audit API](https://apify.com/webdata_labs/ai-crawler-policy-audit-api) - what a site's robots rules allow AI crawlers to do.
- [HTTP Status Code Checker](https://apify.com/webdata_labs/http-status-code-checker) - bulk-check URLs for redirects and broken links before you rely on them.
- [Product Taxonomy Mapper API](https://apify.com/webdata_labs/ai-product-taxonomy-mapper-api) - map messy product titles onto a clean category tree.

### ❓ FAQ

#### Can I return only changed pages?

Yes. Disable `includeUnchanged`. The first successful run still returns an `INITIALIZED` baseline row.

#### Does it use an LLM?

No. Classification and evidence extraction are deterministic, which keeps runs fast, explainable, and inexpensive.

#### What happens when a page is temporarily down?

The run summary counts the failure and preserves the previous good baseline. Failed checks do not create billable dataset rows.

### 🛠️ Support

Use the Issues tab and include the run URL, a redacted input, the monitored URL, and the change you expected. Use the API tab for programmatic runs, schedules, datasets, and webhooks.

# Actor input Schema

## `monitorName` (type: `string`):

Stable name for this watchlist. Reuse it on scheduled runs.

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

Public HTTP or HTTPS pricing, product, legal, changelog, or documentation URLs.

## `focus` (type: `string`):

Limit alerts to one business-relevant category or detect all meaningful changes.

## `includeUnchanged` (type: `boolean`):

Keep enabled for monitoring heartbeats and a non-empty first run. Disable for change-only feeds.

## `advanced` (type: `object`):

Optional: timeoutSecs (5-60), maxTextChars (10000-200000), resetBaseline, userAgent.

## Actor input object example

```json
{
  "monitorName": "apify-product-watch",
  "urls": [
    "https://apify.com/pricing"
  ],
  "focus": "all",
  "includeUnchanged": true
}
```

# Actor output Schema

## `changes` (type: `string`):

No description

## `OUTPUT` (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 = {
    "monitorName": "apify-product-watch",
    "urls": [
        "https://apify.com/pricing"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("webdata_labs/website-change-intelligence-api").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 = {
    "monitorName": "apify-product-watch",
    "urls": ["https://apify.com/pricing"],
}

# Run the Actor and wait for it to finish
run = client.actor("webdata_labs/website-change-intelligence-api").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 '{
  "monitorName": "apify-product-watch",
  "urls": [
    "https://apify.com/pricing"
  ]
}' |
apify call webdata_labs/website-change-intelligence-api --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,webdata_labs/website-change-intelligence-api"
        }
    }
}
```

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/iNd0XOMlEcHH46tcX/builds/zcndkos1Pje6KokJh/openapi.json