Monitor API rate limits and alert with Slack, Gmail and Google Sheets
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 10 nodes and runs on a schedule (every minute). Along the way it connects Slack, Gmail and Google Sheets.
How it runs
Trigger: On a schedule (every minute).
- Fetch Rate Limit Status (HTTP Request): calls an HTTP API
- Parse Usage Data (Code): runs custom JavaScript code
- Score Severity (Edit Fields (Set)): sets 4 fields: severity, severityEmoji, isBreach…
- Threshold Breached (If): checks a condition and branches into true / false
- Is Critical (If): checks a condition and branches into true / false
- Slack: uses Slack
- Slack: uses Slack
- Email On-Call (Gmail): uses Gmail
- Log to Sheets (Google Sheets): append
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (8)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - HTTP Request
n8n-nodes-base.httpRequest - Code
n8n-nodes-base.code - Edit Fields (Set)
n8n-nodes-base.set - If
n8n-nodes-base.if - Slack
n8n-nodes-base.slack - Gmail
n8n-nodes-base.gmail - Google Sheets
n8n-nodes-base.googleSheets
From the author
Quick Overview This workflow runs on a recurring schedule to check an API’s rate-limit status via HTTP, calculates usage and severity, sends Slack and Gmail alerts when thresholds are breached, and logs each check to Google Sheets for tracking. How it works…