# Uptime Transition Alert to Telegram

Source: https://openflow.run/en/templates/uptime-transition-alert-to-telegram/
Content language: en
Template revision: 9018120e802d4de0a097610157c565df858c0871

Operations

Check a website every five minutes and send a Telegram alert when its HTTP status changes between up and down.

[Use in Open Flow](https://console.openflow.run/flows?importUrl=https%3A%2F%2Fraw.githubusercontent.com%2Foomol-lab%2Fawesome-workflow-templates%2F9018120e802d4de0a097610157c565df858c0871%2Fworkflows%2Fuptime-transition-alert-to-telegram%2Ftemplates%2Fuptime-transition-alert-to-telegram.openflow.json)

*   [Open Flow JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/9018120e802d4de0a097610157c565df858c0871/workflows/uptime-transition-alert-to-telegram/templates/uptime-transition-alert-to-telegram.openflow.json)
*   [n8n JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/9018120e802d4de0a097610157c565df858c0871/workflows/uptime-transition-alert-to-telegram/templates/uptime-transition-alert-to-telegram.n8n.json)

![Uptime Transition Alert to Telegram workflow in Open Flow](https://openflow.run/_astro/preview-light.C3f5xWCt_Z1rV7LP.webp)

Check a website every five minutes and send a Telegram alert when its HTTP status changes between up and down.

## Setup

Connect Telegram and set the chat ID in **Send the Telegram alert**. In Open Flow, set the target URL in **Check the website** and add the target hostname and every possible redirect hostname to that Code node’s HTTP capability allowlist (up to 20 host patterns). In n8n, set the URL in **Chiama il sito**, connect Telegram and set the chat ID. Run one format with persistent workflow state and avoid overlapping executions.

## Behavior

Every five minutes, the workflow GETs the website, following up to 21 redirects within a ten-second total request budget. HTTP 5xx is down; other HTTP statuses are up. The first up check is silent. A transition to down sends a red alert; a subsequent transition back up sends a green alert. Repeated results send nothing. A network error or timeout stops the run without changing state or sending a status alert.

Both formats save a changed state after Telegram confirms the alert. A failed or uncertain send leaves the old state, so the next check tries the transition again. An uncertain send may have arrived and the retry can duplicate it; inspect the chat before manually retrying. Persistent state is scoped to the workflow, so use a separate workflow for each website. In Open Flow an unlisted redirect hostname or an HTTP response larger than 1 MiB stops the run without changing state.

Inspiration & credits

## Changes to the source

*   Replace the example URL and environment-variable chat ID with workflow configuration. Open Flow requires the HTTP host allowlist.
*   Configure the n8n HTTP node to return the final status for non-2xx responses; the original flat option did not apply and the response did not include statusCode. Disable n8n’s automatic Telegram footer and save the changed state after a successful alert, so failed sends can be retried on the next check.

Adapted from [Uptime Ping Alert — sai che un sito è giù prima dei tuoi utenti](https://github.com/enescingoz/awesome-n8n-templates/blob/827110332c21cbe000ab13f6d292d5adb1f1f8db/devops/uptime-ping-alert.json) in [enescingoz/awesome-n8n-templates](https://github.com/enescingoz/awesome-n8n-templates).

Source collection notice: © 2024–2026 Enes Cingoz, [CC BY 4.0](https://github.com/enescingoz/awesome-n8n-templates/blob/827110332c21cbe000ab13f6d292d5adb1f1f8db/LICENSE). The source export does not identify a separate template author or license. See [repository licensing](https://github.com/oomol-lab/awesome-workflow-templates/blob/9018120e802d4de0a097610157c565df858c0871/README.md#licensing) for the scope of OOMOL contributions and third-party material.

## Apps used

*   [**Telegram Bot**`telegram`](https://console.openflow.run/connections/telegram)

## What you’ll need

*   A monitored HTTP(S) URL and host access
*   Telegram bot connection and chat ID
*   Persistent workflow State and non-overlapping runs

*   uptime
*   monitoring
*   telegram
*   alerts

[View on GitHub](https://github.com/oomol-lab/awesome-workflow-templates/blob/9018120e802d4de0a097610157c565df858c0871/workflows/uptime-transition-alert-to-telegram/README.md)