AI guest post generator with OpenAI & Google Sheets automation

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Important notice

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

1. Workflow Overview

About this Template This n8n template automates the process of writing SEO guest post content using OpenAI, based on rules and topics provided in a Google Sheet. The generated articles are saved ...

Best for

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

Tools used

@n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.manualtrigger, n8n-nodes-base.googlesheets, n8n-nodes-base.if, n8n-nodes-base.merge, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.gmail, 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 Juan de Dios Estrella Sáez.

Original n8n.io source

1.1 Workflow description

Title: AI guest post generator with OpenAI & Google Sheets automation
Workflow name: AI guest post generator with OpenAI & Google Sheets automation

✨ About this Template

This n8n template automates the process of writing SEO guest post content using OpenAI, based on rules and topics provided in a Google Sheet. The generated articles are saved into a separate sheet for outreach or publishing.

Use cases include:

SEO guest post generation

Content marketing automation for agencies

Outreach planning and editorial automation

💡 Good to Know

OpenAI API usage costs apply based on the selected model (e.g., GPT-4).

This automation uses Google Sheets and OpenAI; credentials are required to connect your accounts.

Status filtering ensures only content marked as “Start” is processed — making it safe to use in multi-user workflows.

⚙️ How It Works

Trigger the workflow manually (can be changed to schedule/cron or webhook).

Reads from a Google Sheet with guest post planning data.

Merges the writing prompt, brand guidelines, and posting rules.

Sends the merged data to OpenAI (via the AI Agent node) to generate a guest post in German.

Saves the result into another Google Sheet.

Updates the original row's status from “Start” to “Finished” to prevent duplicates.

▶️ How to Use

You must connect your Google Sheets and OpenAI accounts.

Customize the AI prompt, tone, or language by editing the input structure.

You can modify the filter to run only on certain months or categories.

The Gmail node is optional and only used to notify when no action was taken.

🧰 Requirements

OpenAI account (API key for GPT-4 or GPT-3.5)

Google account with access to the configured Sheets

Basic knowledge of how n8n expressions work (optional)

🛠️ Customising This Workflow

This guest post writer workflow can easily be adapted to other use cases:

Write social media content from a spreadsheet

Generate product descriptions from catalog data

Automatically translate or rewrite articles in different tones/languages

Create personalized outreach emails using AI

🎁 The workflow includes built-in explanations (sticky notes) to guide you through each part of the process.

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 - Start Manual Trigger

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

Block 3 - Read Config Sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 4 - Check if Status is Start

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

Block 5 - Read Guest Post Input

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 6 - Read Writting Rules

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 7 - Read Portfolio Requirements

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 8 - Merge All Inputs

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 9 - Generate post with AI (German)

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 10 - Save Generated Content to Outreach

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 11 - Mark Config Row as Finished

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 12 - Notify When No Action is Taken

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 13 - Sticky Note

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

Block 14 - Sticky Note1

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

Block 15 - Sticky Note2

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

Block 16 - Sticky Note3

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

Block 17 - Sticky Note4

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

Block 18 - Sticky Note5

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

3. Summary Table

Workflow	AI guest post generator with OpenAI & Google Sheets automation
Complexity	advanced
Nodes	18
Categories	Content Creation, Multimodal AI
Author	Juan de Dios Estrella Sáez
Published	20 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7666/7666.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 guest post generator with OpenAI & Google Sheets automation do?

About this Template This n8n template automates the process of writing SEO guest post content using OpenAI, based on rules and topics provided in a Google Sheet. The generated articles are saved ...

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.

Juan de Dios Estrella Sáez

1 workflow

Nodes

@n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.manualtrigger n8n-nodes-base.googlesheets n8n-nodes-base.if n8n-nodes-base.merge @n8n/n8n-nodes-langchain.agent n8n-nodes-base.gmail n8n-nodes-base.stickynote

Complexity

advanced

Published 20 Aug 2025

Likes 0

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Install path: /data/workflows/7666/7666.json

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AI guest post generator with OpenAI & Google Sheets automation

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 - OpenAI Chat Model

Block 2 - Start Manual Trigger

Block 3 - Read Config Sheet

Block 4 - Check if Status is Start

Block 5 - Read Guest Post Input

Block 6 - Read Writting Rules

Block 7 - Read Portfolio Requirements

Block 8 - Merge All Inputs

Block 9 - Generate post with AI (German)

Block 10 - Save Generated Content to Outreach

Block 11 - Mark Config Row as Finished

Block 12 - Notify When No Action is Taken

Block 13 - Sticky Note

Block 14 - Sticky Note1

Block 15 - Sticky Note2

Block 16 - Sticky Note3

Block 17 - Sticky Note4

Block 18 - Sticky Note5

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