---
title: "Certificate Expiry"
description: "Certificate Expiry is a built-in integration for Home Assistant. It has 6.6k installs sharing analytics and needs the vendor's cloud."
canonical: "https://vulpo.app/integrations/core/cert-expiry"
url: "https://vulpo.app/integrations/core/cert-expiry.md"
last-updated: "2026-10-22"
version: "1.4"
---

# Certificate Expiry

> Certificate Expiry is a built-in integration for Home Assistant. It has 6.6k installs sharing analytics and needs the vendor's cloud.

Certificate Expiry is a built-in Home Assistant integration that tracks when a server's certificate expires. It adds a sensor for the certificate expiry of a monitored server, which is defined by a host name or IP address and a port. A name can be given to the certificate when it is defined. Setup happens in the UI, and the connection settings can be reconfigured later without removing the entry. A diagnostics file can be downloaded to attach to a bug report.

Automatic summary of Home Assistant's source code. Something wrong? [Get in touch](https://vulpo.app/contact)

[Open in My Home Assistant](https://my.home-assistant.io/redirect/config_flow_start/?domain=cert_expiry)

## Supports

- **Uses the vendor's cloud**: Needs an internet connection and an account with the vendor.
- **Set up in the UI**: Add it in Settings, Devices and services. Nothing to download.
- **Change settings later**: Its connection settings can change without removing it.
- **Updated with Home Assistant**: Ships and updates with every Home Assistant release.

## Setting it up

It is added under Settings, Devices and services, with Add integration.

### Define the certificate to test

- **Host**: The hostname or IP address of the server to monitor.
- **The name of the certificate**
- **Port**: The port to connect to on the server.

### Reconfigure the certificate to test

- **Host**: The hostname or IP address of the server to monitor.
- **Port**: The port to connect to on the server.

Texts from Home Assistant's source code, [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).

## Entities

- **Sensors**: Cert expiry

## Troubleshooting

- **Diagnostics**: Downloads a diagnostics file to attach to a bug report.

## At a glance

- Kind: Built-in integration
- Category: [Computers and network](https://vulpo.app/integrations/category/computers-and-network.md), Cloud and developer tools
- Number: 6.6k installs sharing analytics
- Connection: Needs the vendor's cloud
- Upkeep: Part of Home Assistant
- Needs: Built into Home Assistant
- Domain: `cert_expiry`
- Source: <https://www.home-assistant.io/integrations/cert_expiry/>

In Vulpo: Chart card, Apple Watch

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about)

Last updated 2026-10-22. Source: https://vulpo.app/integrations/core/cert-expiry

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