⚙️ HelioConvert Autonomous Content Engine

An intelligent, fully automated n8n workflow designed to transform raw technical concepts into highly opinionated, zero-fluff LinkedIn posts. It features algorithmic angle rotation, strict AI copywriting constraints, and dynamically generated branded graphics—allowing for continuous publishing without human intervention.

This "Content Generator Brain" runs on a schedule to fetch raw concepts from an Airtable Knowledge Vault. It uses Google Gemini to draft technical, anti-buzzword content, evaluates the text to determine the optimal visual format, and generates a custom HTML/CSS graphic on the fly. The final payload is automatically published to LinkedIn and logged back into Airtable.

• Knowledge Vault Extraction: Pulls topics, pillars, core contexts, and key takeaways directly from a structured Airtable database.
• Dynamic Angle Rotation: Randomly assigns one of five distinct writing angles (Architectural Breakdown, Bottleneck & Cost of Inaction, Contrarian / Unpopular Take, Client Transformation Story, or Quick Strategic Tip) to keep the feed unpredictable.
• Opinionated AI Copywriting: Utilizes Google Gemini with strict negative prompting (banning AI buzzwords like "delve" or "landscape," forbidding generic hooks, and enforcing a blunt, technical tone).
• Algorithmic Visual Routing: A secondary AI router analyzes the draft and classifies it into a visual archetype (flowchart, metric_dashboard, split_compare, tech_stack, or text_only).
• On-the-Fly Image Generation: Injects extracted copy into dynamic HTML/CSS templates (featuring Slate, Glows, and Glassmorphism styling) and converts them to high-quality images via the HTML2Img API.
• Automated Distribution & Logging: Publishes text or image posts directly to LinkedIn and updates the Airtable Content Queue with the final AI draft and "Published" status.

• Orchestration: n8n
• Database: Airtable
• LLM / AI: Google Gemini (via Langchain nodes)
• Image Generation: HTML/CSS/JS + HTML2Img API
• Distribution: LinkedIn API

1. Schedule Trigger: Initiates the workflow three times daily (05:47, 08:22, 12:13).
2. Data Fetching: Searches the Helio Convert Publishing Engine Airtable base.
3. Angle Selection (JS Code): Randomizes the content approach.
4. Draft Generation (Gemini): Authors the post based on strict technical constraints.
5. Visual Routing (Gemini): Parses the generated draft and outputs a JSON config dictating the visual structure and UI copywriting.
6. Conditional Formatting (If Node):
   • If Image: Generates a custom HTML template, renders it into a 1080x1080 image, downloads the file, posts to LinkedIn, and creates a published record in Airtable.
   • If Text-Only: Bypasses image generation, posts the raw text to LinkedIn, and updates the Airtable queue.

1. Import the provided JSON workflow file into your n8n instance.
2. Configure your credentials for:
   • Airtable API
   • Google Gemini (PaLM) API
   • LinkedIn OAuth2 API
3. Update the HTTP Request node with your active HTML2Img API key.
4. Ensure your Airtable base matches the table structure (Topic/system name, Pillar, Core Context & Metrics, Key Takeaway/Lesson).
5. Activate the workflow!

Author: Ginger-Eke Chienyegom
B2B Digital Systems Architect & Founder, HelioConvert