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Automated gold price threshold alerts via LINE with web scraping

lin@davoy.techlin@davoy.tech
1088 views
2/3/2026
Text ProcessingWebhookData SplittingBatch ProcessingAPI Integration
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Gold Price Alert

This workflow template, "Gold Price Alert," is designed to monitor gold prices at regular intervals and send real-time notifications via LINE when the price exceeds a specified threshold. By leveraging the power of web scraping and automated alerts, this template ensures you stay informed about significant changes in gold prices without manual intervention.

Whether you're an investor, trader, or simply someone interested in tracking gold prices, this workflow provides a reliable and customizable solution for staying updated.

Who Is This Template For?

  • Investors & Traders: Who want to monitor gold prices and receive alerts when the price reaches a specific threshold.
  • Financial Analysts: Looking for automated tools to track commodity prices. Businesses: Operating in industries where gold prices impact operations or profitability.
  • Automation Enthusiasts: Seeking to build workflows that combine web scraping, data processing, and messaging platforms.

What Problem Does This Workflow Solve?

Tracking gold prices manually can be time-consuming and prone to oversight, especially if you’re monitoring multiple sources or need alerts for specific thresholds.

This workflow solves that problem by:

  • Automatically checking gold prices every 6 hours using a schedule trigger.
  • Extracting the latest price from a trusted source (e.g., Gold Traders Association ).
  • Sending instant notifications via LINE when the price exceeds a predefined threshold (e.g., 52,300 THB).
  • Reducing the need for constant manual checks while ensuring timely updates.

What This Workflow Does

  1. Scheduled Trigger: The workflow is triggered every 6 hours to check the current gold price.
  2. Fetch Webpage Content: It retrieves the HTML content of the webpage displaying the latest gold prices.
  3. Extract Price Data: Using CSS selectors, the workflow extracts the relevant price data (e.g., buying price) from the HTML content.
  4. Filter Prices: The extracted price is converted into a numeric format and compared against a predefined threshold (e.g., 52,300 THB). Alerts are only sent if the price exceeds this value.
  5. Send Notification via LINE: If the condition is met, the workflow sends a notification to your LINE account with the current gold price.

Setup Guide

Pre-Requisites

  • Access to the LINE Developers Console to configure your API Access Token
  • Basic knowledge of HTML and CSS selectors for extracting data from webpages.
  • Familiarity with n8n workflows and JSON formatting.

Step-by-Step Setup

  1. Configure the Schedule Trigger: Set the interval to 6 hours or adjust it based on your preference.
  2. Set Up Webpage Fetching: Update the URL in the HTTP Request node to point to the webpage containing the gold price data.
  3. Extract Price Data: Use the HTML Extractor node to specify the CSS selector for the price element (e.g., #DetailPlace_uc_goldprices1_lblBLBuy).
  4. Set Price Threshold: Modify the threshold value in the If node to match your desired alert level (e.g., 52,300 THB).
  5. Configure LINE Push API: Replace the placeholder to field in the Send Line Message node with your LINE user ID to ensure notifications are sent to the correct account.

Test the Workflow:

  • Run the workflow manually to verify that it fetches the price, evaluates the condition, and sends notifications correctly.

How to Customize This Workflow to Your Needs

  • Change the Interval: Adjust the schedule trigger to check prices more or less frequently (e.g., hourly or daily).
  • Monitor Multiple Prices: Extend the workflow to extract and compare additional price points (e.g., selling price, international rates).
  • Integrate Other Platforms: Replace the LINE notification with integrations for Telegram, email, or SMS.
  • Expand Use Cases: Adapt the workflow to track other commodities or financial indicators by modifying the webpage URL and CSS selectors.

Why Use This Template?

  • Real-Time Alerts: Stay informed about significant changes in gold prices without manual intervention.
  • Customizable Thresholds: Set your own price thresholds to receive alerts tailored to your needs.
  • Easy Integration: Seamlessly integrates with LINE for quick setup and minimal maintenance.
  • Scalable: Easily extend the workflow to monitor multiple data points or integrate with other platforms.

Automated Gold Price Threshold Alerts via LINE with Web Scraping

This n8n workflow automates the process of monitoring gold prices from a web source and sending alerts to a LINE messaging channel if the price falls below a predefined threshold. It's designed to keep you informed about significant price movements without manual checking.

What it does

This workflow performs the following steps:

  1. Schedules Execution: The workflow runs automatically at regular intervals (e.g., every hour, daily) as configured by the Schedule Trigger node.
  2. Fetches Gold Price Data: It makes an HTTP request to a specified URL (likely a gold price tracking website or API) to retrieve the latest gold price information.
  3. Parses HTML Content: The retrieved HTML content is then processed to extract the relevant gold price data using the HTML node. This typically involves using CSS selectors to pinpoint the exact element containing the price.
  4. Evaluates Price Threshold: An If node checks if the extracted gold price is below a certain predefined threshold.
  5. Sends LINE Alert (Conditional): If the gold price is indeed below the threshold, the workflow would typically proceed to send a notification to a LINE messaging channel. (Note: The provided JSON does not include a LINE node, but based on the directory name, this would be the logical next step in a complete implementation.)

Prerequisites/Requirements

To fully utilize this workflow, you will need:

  • n8n Instance: A running instance of n8n (self-hosted or cloud).
  • Web Scraping Target: A publicly accessible website or API that provides current gold prices. You will need to identify the specific URL and the CSS selector for the gold price element.
  • LINE Account & Channel (Implied): If you intend to send alerts to LINE, you will need a LINE Developers account, a LINE Messaging API channel, and the necessary channel access token and user ID(s) or group ID(s). (This part is inferred from the directory name as the provided JSON does not contain a LINE node).

Setup/Usage

  1. Import the Workflow:
    • Download the provided JSON content.
    • In your n8n instance, go to "Workflows" and click "New".
    • Click the "Import from JSON" button and paste the workflow JSON.
  2. Configure the Schedule Trigger:
    • Open the "Schedule Trigger" node.
    • Set your desired interval for the workflow to run (e.g., every 1 hour, every day at a specific time).
  3. Configure the HTTP Request Node:
    • Open the "HTTP Request" node.
    • Set the URL to the gold price website or API you want to scrape.
    • Ensure the request method is appropriate (usually GET).
  4. Configure the HTML Node:
    • Open the "HTML" node.
    • You will need to configure the CSS Selector to accurately extract the gold price from the HTML response of the HTTP Request. This is crucial for the workflow to function correctly.
    • Test the node with sample data to ensure it extracts the price as expected.
  5. Configure the If Node:
    • Open the "If" node.
    • Set the condition to compare the extracted gold price (from the HTML node's output) against your desired threshold. For example, {{ $json.goldPrice < 1800 }} if your threshold is $1800.
  6. Add LINE Notification Node (Recommended):
    • Connect the "True" output of the "If" node to a new LINE node (or a similar messaging node like Slack, Telegram, Email, etc., depending on your preference).
    • Configure the LINE node with your LINE Channel Access Token and the recipient ID(s) to send the alert message.
    • Craft the message content to include the current gold price and the alert reason.
  7. Activate the Workflow: Once all configurations are complete, activate the workflow in n8n.

The workflow will now automatically check the gold price at your specified intervals and send an alert if it drops below your set threshold.

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