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Monitor SSL certificate of any domain with uProc

Miquel ColomerMiquel Colomer
2944 views
2/3/2026
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Do you want to check the SSL certificate expiration dates of your customers or servers?

This workflow gets information of an SSL certificate using the uProc Get Certificate by domain tool. You can use this workflow to query SSL certificates in bulk and send alarms when any certificate has expired.

workflow-screenshot

You need to add your credentials (Email and API Key - real -) located at Integration section to n8n.

You can replace "Create Domain Item" with any integration containing a domain, like Google Sheets, MySQL, or Zabbix server.

Every "uProc" node returns the next fields per every analyzed SSL certificate:

  • issuer: Contains the issuer.
  • provider: Contains the provider.
  • valid_from: Contains the start date.
  • valid_to: Contains the end date.
  • serial_number: Contains the serial number.
  • type: Contains if supports one or multiple domains.
  • protocol: Contains the protocol.
  • valid: Contains its validity.
  • domains: Contains all domains and subdomains supported.

An "IF" node detects if the certificate is valid or not.

Finally, the workflow sends an alarm to a Telegram channel to know if the certificate has expired.

Monitor SSL Certificate of Any Domain with uProc

This n8n workflow simplifies the process of monitoring the SSL certificate expiration for any domain using uProc and sends notifications via Telegram. It's designed to help you stay on top of your domain's security by alerting you before certificates expire.

What it does

  1. Starts the Workflow: The workflow is manually triggered or scheduled to run.
  2. Checks SSL Certificate with uProc: It uses the uProc node to check the SSL certificate status of a specified domain.
  3. Processes uProc Output: A "Function Item" node processes the data received from uProc, likely extracting key information about the SSL certificate, such as expiration date or status.
  4. Conditional Check: An "If" node evaluates the processed certificate information. This node likely checks if the certificate is nearing expiration or has already expired.
  5. Sends Telegram Notification: If the condition in the "If" node is met (e.g., certificate is expiring soon or expired), a message is sent to a specified Telegram chat, alerting you to the certificate status.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • uProc Account: An account with uProc and the necessary credentials configured in n8n.
  • Telegram Account: A Telegram bot token and chat ID to send notifications.
    • You'll need to create a Telegram Bot using BotFather and get its token.
    • You'll also need the chat ID where you want to receive notifications.

Setup/Usage

  1. Import the Workflow:
    • Download the provided JSON file.
    • In your n8n instance, go to "Workflows" and click "New".
    • Click the three dots menu (...) and select "Import from JSON".
    • Paste the JSON content or upload the file.
  2. Configure Credentials:
    • uProc: Configure your uProc API credentials in the uProc node.
    • Telegram: Configure your Telegram Bot Token in the Telegram node.
  3. Customize the Workflow:
    • uProc Node: Edit the uProc node to specify the domain(s) you want to monitor. You might need to adjust the uProc "Operation" and "Resource" to specifically target SSL certificate checks.
    • Function Item Node: Review and potentially modify the JavaScript code within the "Function Item" node to parse the uProc response as needed and extract the relevant SSL certificate data (e.g., expiration date).
    • If Node: Adjust the conditions in the "If" node to define when a notification should be sent (e.g., "if expiration date is less than 30 days away").
    • Telegram Node: Set the Chat ID in the Telegram node to the ID of the chat or group where you want to receive alerts. Customize the message content to include relevant certificate details.
  4. Activate the Workflow: Toggle the workflow to "Active" in the top right corner.
  5. Schedule (Optional): If you want to monitor certificates regularly, add a "Cron" or "Schedule Trigger" node at the beginning of the workflow instead of the "Start" node to run it at a set interval (e.g., daily, weekly).

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