Generate viral Facebook posts with Gemini 2.0 & AI image generation

Needs changes

by Charles ✓ · 4,420 views · created 2025-09-19 · Social Media, Multimodal AI

Needs changes. This template uses 1 thing(s) that n8n 3.0 removes: Function (legacy). 1 breaking item(s) found. Static check, last run 2026-10-19.

What this workflow does

This AI workflow has 18 nodes and runs when someone submits an n8n form (“Input the post idea”). Along the way it connects Facebook Graph API, Google Sheets, Google Gemini Chat Model and Gmail. It also calls router.huggingface.co over HTTP.

How it runs

Trigger: When someone submits an n8n form (“Input the post idea”).

Append row in sheet (Google Sheets): append
If: checks a condition and branches into true / false
Basic LLM Chain: sends a prompt to an LLM, with model: Google Gemini Chat Model
Code: runs custom JavaScript code
If: checks a condition and branches into true / false
Basic LLM Chain: sends a prompt to an LLM, with model: Google Gemini Chat Model
HTTP Request: calls router.huggingface.co (POST)
save content (Google Sheets): append
Convert to File code (Code): runs custom JavaScript code
Format Content (Function): runs custom JavaScript (legacy Function node)

…plus 5 more steps. See the full node list below.

Services it uses

Facebook Graph API Google Sheets Google Gemini Chat Model Gmail

HTTP calls to: router.huggingface.co

Before you upgrade to n8n 3.0

1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:

Function (legacy) in Format Content: replace with Code node, mode 'Run Once for All Items'.

Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).

Removed in 3.0	Replace with
Function (legacy) Format Content	Code node, mode 'Run Once for All Items'

Nodes used (11)

Ifn8n-nodes-base.if
Mergen8n-nodes-base.merge
Facebook Graph APIn8n-nodes-base.facebookGraphApi
Functionn8n-nodes-base.function
Google Sheetsn8n-nodes-base.googleSheets
Basic LLM Chain@n8n/n8n-nodes-langchain.chainLlm
Coden8n-nodes-base.code
Google Gemini Chat Model@n8n/n8n-nodes-langchain.lmChatGoogleGemini
HTTP Requestn8n-nodes-base.httpRequest
n8n Form Triggern8n-nodes-base.formTrigger
Gmailn8n-nodes-base.gmail

From the author

🚀 AI Facebook Post Generator - Complete Setup Guide > Transform your content ideas into viral Facebook posts with AI-powered automation in just 30 minutes! --- 📋 Prerequisites Checklist What you'll need before we start: - ✅ n8n instance (cloud or…
Excerpt from Charles's description on n8n.io.

View the original on n8n.io → Check your own copy

Generate viral Facebook posts with Gemini 2.0 & AI image generation

What this workflow does

How it runs

Services it uses

Before you upgrade to n8n 3.0

Nodes used (11)

From the author

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