# Website Change Monitor (`mrprince90/website-change-monitor`) Actor Monitor website pages for content changes by hashing page text and storing snapshots. Great for competitor pages, pricing pages, and landing pages. - **URL**: https://apify.com/mrprince90/website-change-monitor.md - **Developed by:** [Mr Prince](https://apify.com/mrprince90) (community) - **Categories:** Automation, Developer tools, SEO tools - **Stats:** 1 total users, 0 monthly users, 0.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $0.01 / actor start This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. 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. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use 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 **Monitor any website for content changes, price updates, new pages, and structural modifications. Get alerted when your competitors update their site.** ### 🎯 Why This Matters Your competitors are constantly updating their websites — new pricing, new features, new content strategies. This Actor tracks those changes so you can react instantly. #### Questions this answers: - ✅ Did a competitor change their pricing page? - ✅ When was the last update to a key page? - ✅ What new pages did a competitor publish? - ✅ Did a product page description change? - ✅ How often does a site update its content? ### ✨ Features | Feature | Description | |---------|-------------| | **Content Fingerprinting** | Creates a fingerprint of page content and detects changes on re-run | | **Multi-URL Monitoring** | Track as many pages as you need in a single run | | **Smart Diff Detection** | Detects meaningful content changes (not just dynamic elements) | | **Persistent Storage** | Saves fingerprints in Apify Key-Value Store for historical comparison | | **Real-time Alerts** | Webhook integration for instant notifications | ### 📋 Input ```json { "startUrls": [ { "url": "https://competitor.com/pricing" }, { "url": "https://competitor.com/features" } ], "maxPagesPerCrawl": 10, "monitorMode": "detect_changes" } ```` | Field | Type | Required | Default | Description | |-------|------|----------|---------|-------------| | `startUrls` | object\[] | ✅ | — | URLs to monitor ({url: "...", label: "..."}) | | `maxPagesPerCrawl` | int | ❌ | 10 | Max pages to check per run | | `monitorMode` | string | ❌ | detect\_changes | detect\_changes, full\_crawl, or fingerprint\_only | ### 📊 Output ```json { "url": "https://competitor.com/pricing", "title": "Pricing — Competitor Inc", "fingerprint": "a1b2c3d4e5...", "previousFingerprint": "f6g7h8i9j0...", "changed": true, "changeType": "content_modified", "detectedAt": "2026-07-07T10:00:00Z", "httpStatus": 200 } ``` ### 💰 Pricing Plan (Pay-Per-Event) | Event | Price | Description | |-------|-------|-------------| | Per page check | $0.001 | Monitor a single page for changes | | Batch crawl (10 pages) | $0.008 | Full site scan for new/updated pages | | Weekly monitoring schedule | $0.005/run | Recurring competitive monitoring | ### 🚀 Use Cases - **Competitive Intelligence**: Track competitor pricing, feature pages, and content strategy - **SEO Monitoring**: Detect when important backlink pages change - **Compliance**: Monitor regulatory and legal pages for updates - **Content Theft**: Check if your content is being copied on other sites ### 🔗 Integrations - **API**: Trigger via Apify API, n8n, Make, Zapier - **Webhooks**: Get Slack/Email alerts on detected changes - **Scheduling**: Set up daily/weekly monitoring via Apify Schedules *** **Know when your competitors blink.** # Actor input Schema ## `urls` (type: `array`): Web pages to monitor ## `tag` (type: `string`): Optional label for this monitor ## `timeoutSecs` (type: `integer`): Max seconds to wait for each page ## `waitMs` (type: `integer`): Delay before reading page content (ms) ## Actor input object example ```json { "timeoutSecs": 30, "waitMs": 2000 } ``` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = {}; // Run the Actor and wait for it to finish const run = await client.actor("mrprince90/website-change-monitor").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${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 '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = {} # Run the Actor and wait for it to finish run = client.actor("mrprince90/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 '{}' | apify call mrprince90/website-change-monitor --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=mrprince90/website-change-monitor", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Website Change Monitor", "description": "Monitor website pages for content changes by hashing page text and storing snapshots. Great for competitor pages, pricing pages, and landing pages.", "version": "0.1", "x-build-id": "QeZYTNaU2GDEZfgmX" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/mrprince90~website-change-monitor/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-mrprince90-website-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/mrprince90~website-change-monitor/runs": { "post": { "operationId": "runs-sync-mrprince90-website-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/mrprince90~website-change-monitor/run-sync": { "post": { "operationId": "run-sync-mrprince90-website-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "required": [ "urls" ], "properties": { "urls": { "title": "URLs", "type": "array", "description": "Web pages to monitor", "items": { "type": "string" } }, "tag": { "title": "Tag", "type": "string", "description": "Optional label for this monitor" }, "timeoutSecs": { "title": "Timeout Seconds", "minimum": 5, "maximum": 120, "type": "integer", "description": "Max seconds to wait for each page", "default": 30 }, "waitMs": { "title": "Wait Delay (ms)", "minimum": 0, "maximum": 10000, "type": "integer", "description": "Delay before reading page content (ms)", "default": 2000 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```