Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase

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Important notice

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

1. Workflow Overview

How it works This workflow creates a complete AI powered restaurant ordering system through WhatsApp. It receives customer messages, processes multimedia content (text, voice, images, PDFs, locatio...

Best for

Support Chatbot automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.memorypostgreschat, n8n-nodes-base.wait, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.whatsapp, n8n-nodes-base.set, n8n-nodes-base.stickynote

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase
Workflow name: Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase

How it works

This workflow creates a complete AI-powered restaurant ordering system through WhatsApp. It receives customer messages, processes multimedia content (text, voice, images, PDFs, location), uses GPT-4 to understand customer intent and manage conversations, handles the complete ordering flow from menu selection to payment verification, and sends formatted orders to restaurant staff. The system maintains conversation memory, verifies payment receipts using OCR, and provides automated responses in multiple languages.

Who's it for

Restaurant owners, food delivery services, and hospitality businesses looking to automate customer service and order management through WhatsApp without hiring additional staff.

Requirements

WhatsApp Business API account
OpenAI API key (GPT-4/GPT-4o access recommended)
Supabase account (for conversation memory and vector storage)
Google Drive account (for menu images and QR codes)
Google Maps API key (for location services)
Gemini API key (for PDF processing)

How to set up

Configure credentials - Add your WhatsApp Business API, OpenAI, Supabase, Google Drive, and Gemini API credentials to n8n
Update phone numbers - Replace [PHONE_NUMBER] placeholders with your actual restaurant and staff phone numbers
Customize restaurant details - Replace [RESTAURANT_NAME], [RESTAURANT_OWNER_NAME], and [BANK_ACCOUNT_NUMBER] with your information
Upload menu images - Add your menu images to Google Drive and update the file IDs
Set up Supabase - Create tables for chat memory and upload your menu/restaurant information to the vector database
Configure AI prompts - Update the restaurant information in the AI agent system messages
Test the workflow - Send test messages to verify all integrations work

How to customize the workflow

Menu management: Update Google Drive file IDs to display your current menu images
Payment verification: Modify the receipt analysis logic to match your bank's receipt format
Order formatting: Customize the order confirmation template sent to kitchen staff
AI personality: Adjust the restaurant agent's tone and responses in the system prompts
Languages: The AI supports multiple languages - customize welcome messages for your target market
Business hours: Add time-based logic to handle orders outside operating hours
Delivery zones: Integrate with your delivery area logic using the location processing features

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 - OpenAI Chat Model2

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 2 - Postgres Chat Memory1

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

Block 3 - Wait

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

Block 4 - Google Maps

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

Block 5 - Code

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

Block 6 - WhatsApp Business Cloud2

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

Block 7 - Download Image

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

Block 8 - Get Image Url

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

Block 9 - Image

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

Block 10 - Sticky Note

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

Block 11 - Sticky Note3

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

Block 12 - Download Audio

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

Block 13 - Transcribe Audio

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 14 - Audio

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

Block 15 - Get Audio Url

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

Block 16 - Text

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

Block 17 - Location

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

Block 18 - Download File

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

Block 19 - Get File Url

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

Block 20 - File

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

Block 21 - Sticky Note5

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

Block 22 - Sticky Note6

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

Block 23 - Sticky Note7

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

Block 24 - Sticky Note8

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

Showing the first 24 of 55 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase
Complexity	advanced
Nodes	55
Categories	Support Chatbot, Multimodal AI
Author	Rodrigo
Published	12 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7298/7298.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 Support Chatbot workflows Multimodal AI workflows

Frequently asked questions

What does Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase 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 Support Chatbot, Multimodal AI use case.

Rodrigo

1 workflow

Nodes

@n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.memorypostgreschat n8n-nodes-base.wait n8n-nodes-base.httprequest n8n-nodes-base.code n8n-nodes-base.whatsapp n8n-nodes-base.set n8n-nodes-base.stickynote

Complexity

advanced

Published 12 Aug 2025

Likes 0

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Install path: /data/workflows/7298/7298.json

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Restaurant order & delivery system for WhatsApp with GPT-4o and Supabase

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Who's it for

Requirements

How to set up

How to customize the workflow

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - OpenAI Chat Model2

Block 2 - Postgres Chat Memory1

Block 3 - Wait

Block 4 - Google Maps

Block 5 - Code

Block 6 - WhatsApp Business Cloud2

Block 7 - Download Image

Block 8 - Get Image Url

Block 9 - Image

Block 10 - Sticky Note

Block 11 - Sticky Note3

Block 12 - Download Audio

Block 13 - Transcribe Audio

Block 14 - Audio

Block 15 - Get Audio Url

Block 16 - Text

Block 17 - Location

Block 18 - Download File

Block 19 - Get File Url

Block 20 - File

Block 21 - Sticky Note5

Block 22 - Sticky Note6

Block 23 - Sticky Note7

Block 24 - Sticky Note8

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