AI-powered code review with linting, red-marked corrections in Google Sheets & Slack

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Advanced Code Review Automation (AI + Lint + Slack) Who’s it for For software engineers, QA teams, and tech leads who want to automate intelligent code reviews with both AI driven suggestions and r...

Best for

Engineering automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.googlesheetstrigger, n8n-nodes-base.set, n8n-nodes-base.googlesheets, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.googlesheetstool, n8n-nodes-base.stickynote, n8n-nodes-base.function

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: AI-powered code review with linting, red-marked corrections in Google Sheets & Slack
Workflow name: AI-powered code review with linting, red-marked corrections in Google Sheets & Slack

Advanced Code Review Automation (AI + Lint + Slack)

Who’s it for

For software engineers, QA teams, and tech leads who want to automate intelligent code reviews with both AI-driven suggestions and rule-based linting — all managed in Google Sheets with instant Slack summaries.

How it works

This workflow performs a two-layer review system:

Lint Check: Runs a lightweight static analysis to find common issues (e.g., use of var, console.log, unbalanced braces).
AI Review: Sends valid code to Gemini AI, which provides human-like review feedback with severity classification (Critical, Major, Minor) and visual highlights (red/orange tags).
Formatter: Combines lint and AI results, calculating an overall score (0–10).
Aggregator: Summarizes results for quick comparison.
Google Sheets Writer: Appends results to your review log.
Slack Notification: Posts a concise summary (e.g., number of issues and average score) to your team’s channel.

How to set up

Connect Google Sheets and Slack credentials in n8n.
Replace placeholders (<YOUR_SPREADSHEET_ID>, <YOUR_SHEET_GID_OR_NAME>, <YOUR_SLACK_CHANNEL_ID>).
Adjust the AI review prompt or lint rules as needed.
Activate the workflow — reviews will start automatically whenever new code is added to the sheet.

Requirements

Google Sheets and Slack integrations enabled
A configured AI node (Gemini, OpenAI, or compatible)
Proper permissions to write to your target Google Sheet

How to customize

Add more linting rules (naming conventions, spacing, forbidden APIs)
Extend the AI prompt for project-specific guidelines
Customize the Slack message formatting
Export analytics to a dashboard (e.g., Notion or Data Studio)

Why it’s valuable

This workflow brings realistic, team-oriented AI-assisted code review to n8n — combining the speed of automated linting with the nuance of human-style feedback. It saves time, improves code quality, and keeps your team’s review history transparent and centralized.

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 - コード入力シート監視

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

Block 2 - レビュー結果整形

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - レビュー結果書き込み

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 4 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 5 - Google Gemini Chat Model

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

Block 6 - Get row(s) in sheet in Google Sheets

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.7

Block 7 - Sheet Trigger Note

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

Block 8 - AI Review Note

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

Block 9 - Formatting Note

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

Block 10 - Write Output Note

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

Block 11 - Lint Check

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

Block 12 - Format Review Output

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

Block 13 - Aggregate Review Stats

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

Block 14 - Post Review Summary

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 15 - Template Overview (Advanced)

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

Block 16 - Sticky Note

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

3. Summary Table

Workflow	AI-powered code review with linting, red-marked corrections in Google Sheets & Slack
Complexity	advanced
Nodes	16
Categories	Engineering, AI Summarization
Author	higashiyama
Published	22 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/10034/10034.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 Engineering workflows AI Summarization workflows

Frequently asked questions

What does AI-powered code review with linting, red-marked corrections in Google Sheets & Slack 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 Engineering, AI Summarization use case.

higashiyama

5 workflows

Nodes

n8n-nodes-base.googlesheetstrigger n8n-nodes-base.set n8n-nodes-base.googlesheets @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.googlesheetstool n8n-nodes-base.stickynote n8n-nodes-base.function

Complexity

advanced

Published 22 Oct 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/10034/10034.json

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AI-powered code review with linting, red-marked corrections in Google Sheets & Slack

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Advanced Code Review Automation (AI + Lint + Slack)

Who’s it for

How it works

How to set up

Requirements

How to customize

Why it’s valuable

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - コード入力シート監視

Block 2 - レビュー結果整形

Block 3 - レビュー結果書き込み

Block 4 - AI Agent

Block 5 - Google Gemini Chat Model

Block 6 - Get row(s) in sheet in Google Sheets

Block 7 - Sheet Trigger Note

Block 8 - AI Review Note

Block 9 - Formatting Note

Block 10 - Write Output Note

Block 11 - Lint Check

Block 12 - Format Review Output

Block 13 - Aggregate Review Stats

Block 14 - Post Review Summary

Block 15 - Template Overview (Advanced)

Block 16 - Sticky Note

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