Monitor website uptime and diagnose errors with Gemini and Slack alerts

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1. Workflow Overview

Who is this for DevOps engineers, site reliability teams, and business owners who need to know the moment their website goes down — and want AI powered diagnostics instead of just a ping alert. Wha...

Best for

DevOps automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.scheduletrigger, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.if, @n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.googlesheets

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Oka Hironobu.

Original n8n.io source

1.1 Workflow description

Title: Monitor website uptime and diagnose errors with Gemini and Slack alerts
Workflow name: Monitor website uptime and diagnose errors with Gemini and Slack alerts

Who is this for

DevOps engineers, site reliability teams, and business owners who need to know the moment their website goes down — and want AI-powered diagnostics instead of just a ping alert.

What this workflow does

A Schedule Trigger checks your website every 5 minutes by sending an HTTP Request to your target URL. A Code node evaluates the response status code and response time against your thresholds. When the site is down or degraded, Google Gemini analyzes the error pattern and provides a probable root cause diagnosis with recommended actions. Every health check is logged to Google Sheets for uptime history tracking. Downtime events trigger an immediate Slack alert that includes the AI diagnosis. A daily summary email is sent via Gmail so you have a record even when nothing goes wrong.

How to set up

Replace https://example.com in the "Check Website" node with your actual URL
Add your free Google Gemini API key from Google AI Studio
Create a Google Sheet called "Uptime Log" and connect it
Connect Slack and select your monitoring channel
Connect Gmail and set the recipient email address

Requirements

Google Gemini API key (free tier)
Google Sheets account
Slack workspace
Gmail account
n8n instance (self-hosted or cloud)

How to customize

Change the check interval in the "Check Every 5 Minutes" trigger node
Adjust the response time threshold in the "Evaluate Response" Code node (default: 3000ms)
Monitor multiple URLs by duplicating the HTTP Request and Code nodes

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Overview

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 2 - Note - Health Check

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 3 - Note - AI Diagnosis

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 4 - Note - Notifications

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Check Every 5 Minutes

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 6 - Check Website

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 7 - Evaluate Response

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 8 - Site Down?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2

Block 9 - Diagnose Error

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.4

Block 10 - Gemini Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 11 - Log to Uptime Sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 12 - Alert Slack

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.2

Block 13 - Send Daily Report

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

3. Summary Table

Workflow	Monitor website uptime and diagnose errors with Gemini and Slack alerts
Complexity	intermediate
Nodes	13
Categories	DevOps, AI Summarization
Author	Oka Hironobu
Published	24 Feb 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13672/13672.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source DevOps workflows AI Summarization workflows

Frequently asked questions

What does Monitor website uptime and diagnose errors with Gemini and Slack alerts do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your DevOps, AI Summarization use case.

Oka Hironobu

30 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.scheduletrigger n8n-nodes-base.httprequest n8n-nodes-base.code n8n-nodes-base.if @n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.googlesheets

Complexity

intermediate

Published 24 Feb 2026

Likes 0

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Install path: /data/workflows/13672/13672.json

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Monitor website uptime and diagnose errors with Gemini and Slack alerts

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who is this for

What this workflow does

How to set up

Requirements

How to customize

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Overview

Block 2 - Note - Health Check

Block 3 - Note - AI Diagnosis

Block 4 - Note - Notifications

Block 5 - Check Every 5 Minutes

Block 6 - Check Website

Block 7 - Evaluate Response

Block 8 - Site Down?

Block 9 - Diagnose Error

Block 10 - Gemini Chat Model

Block 11 - Log to Uptime Sheet

Block 12 - Alert Slack

Block 13 - Send Daily Report

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions