Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter

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1. Workflow Overview

Quick Overview This workflow triggers on new ImageKit uploads, downloads the image, uses OpenRouter (OpenAI GPT 4o) vision to run an NSFW check, and automatically unpublishes flagged assets in Imag...

Best for

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

Tools used

n8n-nodes-base.stickynote, @imagekit/n8n-nodes-imagekit.imagekittrigger, n8n-nodes-base.httprequest, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenrouter, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.if, @imagekit/n8n-nodes-imagekit.imagekit

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter
Workflow name: Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter

Quick Overview

This workflow triggers on new ImageKit uploads, downloads the image, uses OpenRouter (OpenAI GPT-4o) vision to run an NSFW check, and automatically unpublishes flagged assets in ImageKit so they are not served via your CDN.

How it works

Triggers when ImageKit emits a file.created event for a newly uploaded asset.
Downloads the uploaded image from the ImageKit URL as binary data.
Sends the image to OpenRouter using the OpenAI GPT-4o model to return a structured JSON verdict (is_nsfw, confidence, and reason).
Checks the model verdict and, when is_nsfw is true, updates the ImageKit file to set it as unpublished.
Ends without taking action when the image is not flagged.

Setup

Add ImageKit credentials for both the ImageKit trigger (webhook) and the ImageKit API operation used to unpublish files.
Create an OpenRouter credential with access to the openai/gpt-4o model.
In ImageKit, register the n8n webhook URL for file.created events and ensure new uploads default to published if you want this workflow to act as the gatekeeper.

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 - Section 1

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

Block 3 - Section 2

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

Block 4 - Section 3

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

Block 5 - Confidence Threshold Note

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

Block 6 - New File Upload

Type / Role: @imagekit/n8n-nodes-imagekit.imagekitTrigger - imagekitTrigger
Config choices: Version 1

Block 7 - Download Image

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 8 - GPT-4o Vision

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

Block 9 - OpenRouter Chat Model

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

Block 10 - Structured Output Parser

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

Block 11 - Is NSFW?

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

Block 12 - Unpublish File

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

3. Summary Table

Workflow	Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter
Complexity	intermediate
Nodes	12
Categories	Document Extraction, AI Summarization
Author	ImageKit Developer
Published	16 Jun 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/16400/16400.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 Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter 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.

ImageKit Developer

1 workflow

Nodes

n8n-nodes-base.stickynote @imagekit/n8n-nodes-imagekit.imagekittrigger n8n-nodes-base.httprequest @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenrouter @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.if @imagekit/n8n-nodes-imagekit.imagekit

Complexity

intermediate

Published 16 Jun 2026

Likes 0

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Install path: /data/workflows/16400/16400.json

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Unpublish NSFW ImageKit uploads with GPT-4o Vision via OpenRouter

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Quick Overview

How it works

Setup

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Overview

Block 2 - Section 1

Block 3 - Section 2

Block 4 - Section 3

Block 5 - Confidence Threshold Note

Block 6 - New File Upload

Block 7 - Download Image

Block 8 - GPT-4o Vision

Block 9 - OpenRouter Chat Model

Block 10 - Structured Output Parser

Block 11 - Is NSFW?

Block 12 - Unpublish File

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