Generate custom cake images with OpenAI GPT & Replicate Flux Schnell

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Important notice

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

1. Workflow Overview

Who’s it for This template is designed for bakeries, event planners, and e commerce platforms that want to automatically generate custom cake designs . It’s also ideal for marketers or digital crea...

Best for

Content Creation automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.httprequest, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.webhook, n8n-nodes-base.respondtowebhook, 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 Nabin Bhandari.

Original n8n.io source

1.1 Workflow description

Title: Generate custom cake images with OpenAI GPT & Replicate Flux Schnell
Workflow name: Generate custom cake images with OpenAI GPT & Replicate Flux Schnell

Who’s it for

This template is designed for bakeries, event planners, and e-commerce platforms that want to automatically generate custom cake designs. It’s also ideal for marketers or digital creators who need personalized celebratory visuals for social media or email campaigns.

How it works

This workflow converts simple user input (e.g., “Sarah’s Birthday”) into a creative cake design:

Webhook: Captures user input from the Bolt frontend form.
OpenAI GPT: Generates a detailed and creative cake design prompt.
Replicate Flux Schnell: Produces a unique cake image using the AI-generated prompt.
HTTP Response: Sends the final cake image back to the frontend.

How to set up

Import this template into n8n.
Add your OpenAI API Key under n8n Credentials for the OpenAI Chat Model node.
Add your Replicate API Token as an HTTP Header Auth credential (do not hardcode it).
Update the Webhook node URL in the Bolt frontend form to send a POST request to n8n.
(Optional) Customize the OpenAI prompt in the Prompt Generator node to adjust cake style, colors, or decorations.

Requirements

n8n account (cloud or self-hosted).
OpenAI API Key for prompt generation.
Replicate API Token for AI image generation.
A Bolt frontend or any form that can call the webhook endpoint.

How to customize the workflow

Replace "cake" with any product type (e.g., mugs, greeting cards, or T-shirts).
Add a database node (Google Sheets or Supabase) to log user requests and images.
Implement input moderation by adding an OpenAI moderation node before the prompt generation. Frontend

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 Model

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

Block 2 - Generate Image

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

Block 3 - Prompt Generator

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.1

Block 4 - User Sends Request

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

Block 5 - Download Image

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

Block 6 - Respond to Requests

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1.4

Block 7 - Sticky Note1

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

Block 8 - Sticky Note

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

Block 9 - Sticky Note2

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

Block 10 - Sticky Note3

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

Block 11 - Sticky Note4

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

3. Summary Table

Workflow	Generate custom cake images with OpenAI GPT & Replicate Flux Schnell
Complexity	intermediate
Nodes	11
Categories	Content Creation, Multimodal AI
Author	Nabin Bhandari
Published	19 Jul 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/6161/6161.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 Content Creation workflows Multimodal AI workflows

Frequently asked questions

What does Generate custom cake images with OpenAI GPT & Replicate Flux Schnell 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 Content Creation, Multimodal AI use case.

Nabin Bhandari

7 workflows

Nodes

@n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.httprequest @n8n/n8n-nodes-langchain.agent n8n-nodes-base.webhook n8n-nodes-base.respondtowebhook n8n-nodes-base.stickynote

Complexity

intermediate

Published 19 Jul 2025

Likes 0

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Install path: /data/workflows/6161/6161.json

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Generate custom cake images with OpenAI GPT & Replicate Flux Schnell

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who’s it for

How it works

How to set up

Requirements

How to customize the workflow

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - OpenAI Chat Model

Block 2 - Generate Image

Block 3 - Prompt Generator

Block 4 - User Sends Request

Block 5 - Download Image

Block 6 - Respond to Requests

Block 7 - Sticky Note1

Block 8 - Sticky Note

Block 9 - Sticky Note2

Block 10 - Sticky Note3

Block 11 - Sticky Note4

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