Automate Instagram Posts with Google Drive, AI Captions & Facebook API

This n8n workflow automates the entire Instagram content posting process. It starts by reading a Google Sheet with image filenames, captions, and URLs from Google Drive. The workflow fetches images or videos from the specified Drive folder, uses OpenAI to generate engaging, context-aware captions (or uses custom ones if provided), and then posts directly to your Instagram Business or Creator account via the Facebook Graph API. A scheduler triggers runs at set intervals, with built-in error handling and conditional logic for custom vs. AI captions.

Benefits include massive time savings for marketers, consistent posting schedules without manual effort, enhanced content quality through AI-generated captions tailored to image content, and seamless integration across tools. It supports various formats like 1:1 images, 4:5 stories, or 16:9 reels, reducing the risk of posting errors and ensuring compliance with Instagram's API requirements.

Ideal use cases: Social media managers automating daily posts for brands, influencers scheduling content in advance, e-commerce businesses promoting products with AI descriptions, or agencies handling multiple client accounts. Prerequisites include Google Drive/Sheets access, OpenAI API key, and Instagram Business linked to Facebook Page.

Setup is straightforward: configure credentials for each service, set your Drive folder and Sheet columns (Filename, Caption, URL), adjust OpenAI parameters for caption creativity, and define posting schedules. Error notifications keep you informed of issues, making it reliable for production use.