# Landing Page Change Monitor — Track Competitor Pages (`nexgendata/landing-page-change-monitor`) Actor Monitor competitor landing & pricing pages for content changes — scheduled diffs with added/removed lines. No login. Alert-ready for n8n/Slack. - **URL**: https://apify.com/nexgendata/landing-page-change-monitor.md - **Developed by:** [NexGenData](https://apify.com/nexgendata) (community) - **Categories:** Business, Automation, Developer tools - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $60.00 / 1,000 page checkeds 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 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 ## 🔍 Landing Page Change Monitor Watch any list of public pages — competitor landing pages, pricing pages, product pages — and get told what changed between runs. Pure scheduled monitoring; pairs perfectly with n8n/Slack alerts. ### ⚡ What you get | Field | Description | |---|---| | `url` | Page checked | | `changed` | Did visible content change since last run | | `firstSeen` | First time this page was seen | | `previousHash` / `currentHash` | Content fingerprints | | `diff` | Added/removed lines (when changed) | | `checkedAt` / `textLength` | Run metadata | ### 🎯 Use cases 1. Competitive intel — track rival pricing & messaging changes 2. Sales/GTM — get alerted when a target changes positioning 3. Brand/compliance — monitor your own pages for unexpected edits 4. Product — watch partner/integration docs for changes ### 🚀 Sample inputs ```json { "urls": ["https://competitor.com/pricing","https://rival.io/features"] } ```` ```json { "urls": ["https://example.com/"], "selector": "main" } ``` ### 📦 Sample output ```json { "url": "https://competitor.com/pricing", "changed": true, "firstSeen": false, "diff": { "added": ["New: Team plan $99/mo"], "removed": ["Team plan $79/mo"] }, "checkedAt": "2026-06-04T..." } ``` ### 📊 Sample Output ![Sample output](https://api.apify.com/v2/key-value-stores/8gLgXMBveEI1tTz1z/records/landing-page-change-monitor-output.png) ### 🛠 How it works 1. **Fetch** — pulls each page with an identified User-Agent. 2. **Extract** — strips scripts/styles; optional CSS selector to focus a section. 3. **Compare** — hashes visible text and diffs against the previous run (snapshots persist in a named key-value store). 4. **Report** — one row per page with `changed` + added/removed lines. 5. **Schedule** — run hourly/daily; wire `changed==true` to Slack/email via n8n. ### 🔗 Related Actors - [Tech Stack Detector](https://apify.com/nexgendata/wappalyzer-replacement?fpr=2ayu9b) - [Page Speed Analyzer](https://apify.com/nexgendata/page-speed-analyzer?fpr=2ayu9b) - [Google Search Scraper](https://apify.com/nexgendata/google-cse-replacement?fpr=2ayu9b) - [Website Content Crawler](https://apify.com/nexgendata/website-content-crawler?fpr=2ayu9b) ### 💰 Pricing Example Pay-per-event: **$0.005 per run + $0.06 per page checked** (`page-check`). | Pages | Cost | |---|---| | 10 | ~$0.60 | | 50 | ~$3.00 | | 200 | ~$12.01 | Apify's **$5 free credit** covers ~83 pages. [Start free →](https://apify.com/?fpr=2ayu9b) ### ⚖️ Legal & data sources Fetches publicly-accessible pages with an identified User-Agent, one request per URL. Respect each site's terms and robots posture for your use case. ### ❓ FAQ **How does it know what changed?** It stores a snapshot per URL and diffs visible text on the next run. **JS-heavy pages?** Static fetch today; focus with a `selector` for reliability. **Can I watch one section?** Yes — pass a CSS `selector`. **Does the first run show changes?** No — it records a baseline (`firstSeen: true`). **Alerting?** Filter `changed==true` in n8n/Make and route to Slack/email. **State retention?** Snapshots persist in a named key-value store across runs. ### 🆘 Troubleshooting - **Always "changed"** — the page has dynamic/randomized content; narrow with a `selector`. - **Never "changed"** — content is JS-rendered and not in the static HTML. - **Blocked/empty** — some sites block bots; use sparingly and respect terms. - **Too much diff noise** — target a stable section via `selector`. ### 🏷️ About NexGenData Structured public-data tools for analysts, developers, and operators. [thenextgennexus.com](https://thenextgennexus.com/actors-by-workflow/). # Actor input Schema ## `urls` (type: `array`): Pages to watch for content changes. ## `selector` (type: `string`): Limit comparison to a section, e.g. 'main' or '.pricing-table'. Blank = whole page. ## Actor input object example ```json { "urls": [ "https://www.apify.com/pricing", "https://openai.com/pricing" ] } ``` # 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 = { "urls": [ "https://www.apify.com/pricing", "https://openai.com/pricing" ], "selector": "" }; // Run the Actor and wait for it to finish const run = await client.actor("nexgendata/landing-page-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 = { "urls": [ "https://www.apify.com/pricing", "https://openai.com/pricing", ], "selector": "", } # Run the Actor and wait for it to finish run = client.actor("nexgendata/landing-page-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://www.apify.com/pricing", "https://openai.com/pricing" ], "selector": "" }' | apify call nexgendata/landing-page-change-monitor --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=nexgendata/landing-page-change-monitor", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Landing Page Change Monitor — Track Competitor Pages", "description": "Monitor competitor landing & pricing pages for content changes — scheduled diffs with added/removed lines. No login. Alert-ready for n8n/Slack.", "version": "0.0", "x-build-id": "GolW0xYzoSd7ef4aG" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/nexgendata~landing-page-change-monitor/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-nexgendata-landing-page-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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/nexgendata~landing-page-change-monitor/runs": { "post": { "operationId": "runs-sync-nexgendata-landing-page-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/nexgendata~landing-page-change-monitor/run-sync": { "post": { "operationId": "run-sync-nexgendata-landing-page-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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 to monitor", "type": "array", "description": "Pages to watch for content changes.", "items": { "type": "string" } }, "selector": { "title": "CSS selector (optional)", "type": "string", "description": "Limit comparison to a section, e.g. 'main' or '.pricing-table'. Blank = whole page." } } }, "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 } } } } } } } } } } ```