Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets

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1. Workflow Overview

How It Works This workflow automates legal policy governance for legal teams, policy managers, and compliance officers, eliminating manual document review, approval classification, and multi channe...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.formtrigger, n8n-nodes-base.extractfromfile, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.agenttool, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.gmailtool, n8n-nodes-base.slacktool, @n8n/n8n-nodes-langchain.agent

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets
Workflow name: Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets

How It Works

This workflow automates legal policy governance for legal teams, policy managers, and compliance officers, eliminating manual document review, approval classification, and multi-channel stakeholder distribution. Submitted policy documents are form-triggered, extracted into structured text, and passed to the Legal Governance Agent. Backed by shared memory and a governance model, it coordinates three specialist agents: Policy Analysis (content evaluation), Compliance Tracking (regulatory alignment), and Legal Summary (structured report generation). Gmail and Slack notification tools handle multi-channel alerts in parallel. Outputs are parsed and routed by approval status across four concurrent Google Sheets tracks: policy record storage with stakeholder notifications, approval preparation and tracking, compliance record preparation and tracking, and audit log generation, ensuring a complete, audit-ready governance trail for every submission.

Setup Steps

Import workflow; configure the Policy Submission Form trigger.
Add AI model credentials to the Legal Governance Agent, Policy Analysis Agent, Compliance Tracking Agent, and Legal Summary Agent.
Connect Gmail credentials to the Email Notification Tool; link Slack credentials to the Slack Notification Tool.
Link Google Sheets credentials; set sheet IDs for Policy Records, Approvals, Compliance, and Audit Trail tabs.

Prerequisites

OpenAI API key (or compatible LLM)
Gmail account with OAuth credentials
Slack workspace with bot credentials
Google Sheets with policy, approval, compliance, and audit tabs pre-created

Use Cases

Legal teams automating policy submission review and approval classification

Customisation

Extend routing logic to include partial-approval or escalation tiers for complex policies

Benefits

Eliminates manual policy triage and stakeholder notification across large submission volumes

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 - Policy Submission Form

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2.5

Block 2 - Extract Policy Document

Type / Role: n8n-nodes-base.extractFromFile - extractFromFile
Config choices: Version 1.1

Block 3 - Policy Analysis Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 4 - Policy Analysis Agent

Type / Role: @n8n/n8n-nodes-langchain.agentTool - agentTool
Config choices: Version 3

Block 5 - Compliance Tracking Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 6 - Compliance Tracking Agent

Type / Role: @n8n/n8n-nodes-langchain.agentTool - agentTool
Config choices: Version 3

Block 7 - Legal Summary Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 8 - Legal Summary Agent

Type / Role: @n8n/n8n-nodes-langchain.agentTool - agentTool
Config choices: Version 3

Block 9 - Legal Governance Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 10 - Governance Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 11 - Email Notification Tool

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

Block 12 - Slack Notification Tool

Type / Role: n8n-nodes-base.slackTool - slackTool
Config choices: Version 2.4

Block 13 - Legal Governance Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 14 - Route by Approval Status

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

Block 15 - Prepare Policy Record

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

Block 16 - Store Policy Records

Type / Role: n8n-nodes-base.dataTable - dataTable
Config choices: Version 1.1

Block 17 - Prepare Approval Record

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

Block 18 - Track Approvals

Type / Role: n8n-nodes-base.dataTable - dataTable
Config choices: Version 1.1

Block 19 - Prepare Compliance Record

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

Block 20 - Track Compliance

Type / Role: n8n-nodes-base.dataTable - dataTable
Config choices: Version 1.1

Block 21 - Prepare Audit Log

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

Block 22 - Audit Trail

Type / Role: n8n-nodes-base.dataTable - dataTable
Config choices: Version 1.1

Block 23 - Split Stakeholders

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

Block 24 - Send Stakeholder Email

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

Showing the first 24 of 33 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets
Complexity	advanced
Nodes	33
Categories	Document Extraction, AI Summarization
Author	Cheng Siong Chin
Published	29 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/14436/14436.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 Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets 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 Document Extraction, AI Summarization use case.

Cheng Siong Chin

203 workflows

Nodes

n8n-nodes-base.formtrigger n8n-nodes-base.extractfromfile @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.agenttool @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.gmailtool n8n-nodes-base.slacktool @n8n/n8n-nodes-langchain.agent

Complexity

advanced

Published 29 Mar 2026

Likes 0

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Install path: /data/workflows/14436/14436.json

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Review legal policies with GPT-4o, Gmail, Slack, and Google Sheets

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How It Works

Setup Steps

Prerequisites

Use Cases

Customisation

Benefits

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Policy Submission Form

Block 2 - Extract Policy Document

Block 3 - Policy Analysis Model

Block 4 - Policy Analysis Agent

Block 5 - Compliance Tracking Model

Block 6 - Compliance Tracking Agent

Block 7 - Legal Summary Model

Block 8 - Legal Summary Agent

Block 9 - Legal Governance Model

Block 10 - Governance Output Parser

Block 11 - Email Notification Tool

Block 12 - Slack Notification Tool

Block 13 - Legal Governance Agent

Block 14 - Route by Approval Status

Block 15 - Prepare Policy Record

Block 16 - Store Policy Records

Block 17 - Prepare Approval Record

Block 18 - Track Approvals

Block 19 - Prepare Compliance Record

Block 20 - Track Compliance

Block 21 - Prepare Audit Log

Block 22 - Audit Trail

Block 23 - Split Stakeholders

Block 24 - Send Stakeholder Email

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