Automated Social Media Content Publishing Factory + System Prompt Composition

This n8n workflow automates the process of generating, approving, and publishing social media content across multiple platforms including Twitter, Facebook, Instagram, LinkedIn, Threads, and YouTube Shorts. It starts with receiving user prompts via webhook, then uses large language models (LLMs) and system prompts stored externally in Google Docs to craft platform-specific content. The workflow includes image generation, resizing, and storage in cloud services such as Google Drive and imgbb, followed by formatting and approval steps via Gmail. Upon approval, it automates the posting process using platform APIs, progressing from content creation to final publication, notification, and archiving. This workflow is especially useful for marketing teams aiming to streamline social media management, maintain brand consistency, and optimize engagement through personalized, automated content delivery.