Publish brand-compliant Instagram posts with OpenAI, Google Sheets and S3

by Tricore Infotech Pvt Ltd ✓ · 90 views · created 2026-05-26 · Social Media, Multimodal AI

What this workflow does

This AI workflow has 29 nodes and runs on a schedule (every day) (plus 1 other trigger). Along the way it connects Google Sheets, Facebook Graph API, AWS S3 and OpenAI.

How it runs

Trigger: On a schedule (every day) (plus 1 other trigger).

1. Set Workflow Config (Edit Fields (Set)): sets or maps fields
2. Format Error Alert (Edit Fields (Set)): sets 1 field: alertMessage
3. Fetch Logo Image (HTTP Request): calls an HTTP API
4. Resize Logo Image (Edit Image): resize
5. Fetch Brand Context (HTTP Request): calls an HTTP API
6. If: checks a condition and branches into true / false
7. Read Instagram Posts (Google Sheets): uses Google Sheets
8. Handle Missing Context (Edit Fields (Set)): sets 1 field: error
9. If: checks a condition and branches into true / false
10. Sort: sorts the items

…plus 17 more steps. See the full node list below.

Services it uses

Google SheetsFacebook Graph APIAWS S3OpenAI

Before you upgrade to n8n 3.0

Nodes used (14)

• Schedule Triggern8n-nodes-base.scheduleTrigger
• HTTP Requestn8n-nodes-base.httpRequest
• Ifn8n-nodes-base.if
• Edit Imagen8n-nodes-base.editImage
• Google Sheetsn8n-nodes-base.googleSheets
• Sortn8n-nodes-base.sort
• Loop Over Items (Split in Batches)n8n-nodes-base.splitInBatches
• Waitn8n-nodes-base.wait
• Coden8n-nodes-base.code
• Facebook Graph APIn8n-nodes-base.facebookGraphApi
• AWS S3n8n-nodes-base.awsS3
• Edit Fields (Set)n8n-nodes-base.set
• Error Triggern8n-nodes-base.errorTrigger
• OpenAI@n8n/n8n-nodes-langchain.openAi

From the author

Quick overview This workflow runs daily to read a Google Sheets content calendar, use OpenAI to generate brand-compliant Instagram captions and images from a master brand context file, watermark each image with your logo, publish posts via the Facebook Graph…

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