AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate)

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Important notice

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

1. Workflow Overview

A fully automated content engine that researches, writes, scores, and visualizes LinkedIn posts — built with n8n, OpenAI, Perplexity, and Replicate. What it does: Researches any topic using real ...

Best for

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

Tools used

@n8n/n8n-nodes-langchain.openai, n8n-nodes-base.code, n8n-nodes-base.httprequest, n8n-nodes-base.googlesheets, n8n-nodes-base.perplexity, n8n-nodes-base.webhook

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate)
Workflow name: AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate)

A fully automated content engine that researches, writes, scores, and visualizes LinkedIn posts — built with n8n, OpenAI, Perplexity, and Replicate.

What it does: ✅ Researches any topic using real-time data ✅ Writes a personalized post in your voice ✅ Refines tone and structure ✅ Generates abstract, high-quality visual assets ✅ Scores the output and saves it to Google Sheets

How it works:

Triggered when you change a row status in Google Sheets
Uses Perplexity to research
GPT-4o (OpenAI) to create and polish content
Replicate (FLUX Pro) to generate images
Scores the post using heuristics
Appends everything back to your sheet

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 - ✍️ Content Creator - OpenAI

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

Block 2 - 🎨 Voice Refiner - OpenAI

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

Block 3 - 📊 Content Scorer

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

Block 4 - 🖼️ Image Prompt Generator

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

Block 5 - 🎨 Image Generator

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

Block 6 - 💾 Save Results

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

Block 7 - 🔍 Research & Trends

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

Block 8 - Code

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

Block 9 - Webhook

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

3. Summary Table

Workflow	AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate)
Complexity	intermediate
Nodes	9
Categories	Content Creation, Multimodal AI
Author	Mariano Kostelec
Published	23 Jun 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/5162/5162.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 AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate) 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.

Mariano Kostelec

1 workflow

Nodes

@n8n/n8n-nodes-langchain.openai n8n-nodes-base.code n8n-nodes-base.httprequest n8n-nodes-base.googlesheets n8n-nodes-base.perplexity n8n-nodes-base.webhook

Complexity

intermediate

Published 23 Jun 2025

Likes 0

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Install path: /data/workflows/5162/5162.json

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AI-powered LinkedIn content engine (n8n + OpenAI + Perplexity + Replicate)

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - ✍️ Content Creator - OpenAI

Block 2 - 🎨 Voice Refiner - OpenAI

Block 3 - 📊 Content Scorer

Block 4 - 🖼️ Image Prompt Generator

Block 5 - 🎨 Image Generator

Block 6 - 💾 Save Results

Block 7 - 🔍 Research & Trends

Block 8 - Code

Block 9 - Webhook

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