Triage workflow incidents and monitor n8n health with Slack, Gmail, OpenAI and Google Sheets

by Rahul Joshi ✓ · 4 views · created 2026-10-12 · DevOps, AI Summarization

What this workflow does

This AI workflow has 28 nodes and runs on a schedule (every hour) (plus 1 other trigger). Along the way it connects Google Sheets, OpenAI, Slack and Gmail.

How it runs

Trigger: On a schedule (every hour) (plus 1 other trigger).

1. Set Guard Mode (1h Window) (Edit Fields (Set)): sets 2 fields: mode, window_hours
2. Set Digest Mode (7-Day Window) (Edit Fields (Set)): sets 2 fields: mode, window_hours
3. Set Monitor Config (Edit Fields (Set)): sets 12 fields: n8n_base_url, max_exec_per_hour, min_failures_for_runaway…
4. Fetch Active Workflows (HTTP Request): calls an HTTP API
5. Build Workflow Index (Code): runs custom JavaScript code
6. Fetch Executions per Workflow (HTTP Request): calls an HTTP API
7. Compute Health & Cost Metrics (Code): runs custom JavaScript code
8. Route by Mode (Switch): routes items into 2 branches
9. Read Guard Log Sheet (Google Sheets): uses Google Sheets
10. Read Metrics History Sheet (Google Sheets): uses Google Sheets

…plus 16 more steps. See the full node list below.

Services it uses

Google SheetsOpenAISlackGmail

Before you upgrade to n8n 3.0

Nodes used (10)

• Schedule Triggern8n-nodes-base.scheduleTrigger
• Edit Fields (Set)n8n-nodes-base.set
• HTTP Requestn8n-nodes-base.httpRequest
• Coden8n-nodes-base.code
• Switchn8n-nodes-base.switch
• Google Sheetsn8n-nodes-base.googleSheets
• Ifn8n-nodes-base.if
• OpenAI@n8n/n8n-nodes-langchain.openAi
• Slackn8n-nodes-base.slack
• Gmailn8n-nodes-base.gmail

From the author

Quick overview This workflow monitors your n8n instance hourly and weekly by querying the n8n API for active workflows and recent executions, estimating error rates, performance, and OpenAI token spend, then auto-disabling runaway workflows and sending…

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