Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts

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1. Workflow Overview

Who it's for Legal, Procurement, and Compliance teams at mid size companies. ESN and agencies selling AI powered contract review as a service. How it works Upload a contract PDF through a rich form...

Best for

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

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.formtrigger, n8n-nodes-base.manualtrigger, n8n-nodes-base.set, n8n-nodes-base.httprequest, n8n-nodes-base.if, n8n-nodes-base.form, n8n-nodes-base.extractfromfile

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts
Workflow name: Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts

Who it's for

Legal, Procurement, and Compliance teams at mid-size companies. ESN and agencies selling AI-powered contract review as a service.

How it works

Upload a contract PDF through a rich form (with metadata: contract type, counterparty, department, submitter). The workflow first checks Supabase for duplicates to avoid re-analyzing the same contract. Then it runs a two-pass AI analysis: Pass 1 classifies the contract (type, parties, dates, jurisdiction), Pass 2 performs deep risk analysis (clause-by-clause risk levels, missing clauses, obligations, negotiation points, compliance flags). Results are scored 0–100 with risk levels (CRITICAL / HIGH / MEDIUM / LOW). A structured report is generated as both Slack Block Kit (rich formatting) and HTML email. High-risk contracts trigger a Slack alert with full blocks and an email report to the submitter. Low-risk contracts get a summary Slack notification. All analyses are stored in Supabase with full metadata for audit. An Error Trigger sends admin notifications to a dedicated Slack channel.

How to set up

Run the SQL from the "Supabase Schema" sticky note in Supabase SQL Editor.
Set environment variables: SUPABASE_URL, SUPABASE_SERVICE_KEY.
Add credentials in n8n: OpenAI (Header Auth), Supabase, Slack, Gmail (optional).
Configure the Config node: RISK_THRESHOLD, SLACK_CHANNEL, ADMIN_SLACK_CHANNEL, AI_MODEL, ALERT_EMAIL, ENABLE_EMAIL, CONTRACT_LANG.
Activate the workflow and share the Form URL with your team.

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 - Supabase Schema

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

Block 3 - Step 1 Ingest

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

Block 4 - Step 2 Deduplicate

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

Block 5 - Step 3 Extract

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

Block 6 - Step 4 AI Analysis

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

Block 7 - Step 5 Report Alert

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

Block 8 - Error Handling Note

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

Block 9 - Upload Contract

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

Block 10 - Manual Test

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

Block 11 - Config

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

Block 12 - Check Duplicate

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

Block 13 - Already Exists?

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

Block 14 - Already Analyzed

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

Block 15 - Has File?

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

Block 16 - Extract PDF Text

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

Block 17 - Sample Data

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

Block 18 - Prepare Text

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

Block 19 - Parse Classification

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

Block 20 - Parse Risk Analysis

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

Block 21 - Build Report

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

Block 22 - Supabase Insert

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

Block 23 - High Risk?

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

Block 24 - Form Ending

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

Showing the first 24 of 31 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts
Complexity	advanced
Nodes	31
Categories	Document Extraction, AI Summarization
Author	ben daamer
Published	04 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13875/13875.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 Analyze contract risk from PDFs with OpenAI, Supabase 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 Document Extraction, AI Summarization use case.

ben daamer

4 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.formtrigger n8n-nodes-base.manualtrigger n8n-nodes-base.set n8n-nodes-base.httprequest n8n-nodes-base.if n8n-nodes-base.form n8n-nodes-base.extractfromfile

Complexity

advanced

Published 04 Mar 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/13875/13875.json

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Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who it's for

How it works

How to set up

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Overview

Block 2 - Supabase Schema

Block 3 - Step 1 Ingest

Block 4 - Step 2 Deduplicate

Block 5 - Step 3 Extract

Block 6 - Step 4 AI Analysis

Block 7 - Step 5 Report Alert

Block 8 - Error Handling Note

Block 9 - Upload Contract

Block 10 - Manual Test

Block 11 - Config

Block 12 - Check Duplicate

Block 13 - Already Exists?

Block 14 - Already Analyzed

Block 15 - Has File?

Block 16 - Extract PDF Text

Block 17 - Sample Data

Block 18 - Prepare Text

Block 19 - Parse Classification

Block 20 - Parse Risk Analysis

Block 21 - Build Report

Block 22 - Supabase Insert

Block 23 - High Risk?

Block 24 - Form Ending

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