LinkedIn Carousel — Part-2 Workflow Implementation Guide

Purpose: Reference notes for enhancing the OmniPost Part-2 n8n workflow to support LinkedIn carousel PDF posts.
Last Updated: 2026-04-17

Architecture Overview

Part-1 (n8n automation)
  └─ Node 5 (LinkedIn Content Generation)
       └─ Outputs:
           ├─ formatted_markdown (text caption for the post)
           ├─ content_format: "text" | "carousel"
           ├─ carousel_data.slide_outlines (structured slide content)
           └─ carousel_data.carousel_generation_prompt (AI image generation prompt)

Manual Step (Aman via Claude Desktop)
  └─ Take carousel_generation_prompt → Claude Desktop Project (with brand kit)
  └─ Generate carousel slide images
  └─ Export as PDF
  └─ Upload to Google Drive (same folder as other images)

Part-2 (n8n posting automation)
  └─ Reads content_format field
  └─ IF "carousel" → post with PDF document attachment from Drive
  └─ IF "text" → post with single image (existing flow)

Notion Schema Additions Required

Add the following fields to the Social Content Queue database:

Part-1 Changes (Already Handled by V4.1 Delta Upgrade)

Node 5 (LinkedIn prompt) now outputs:

{
  "formatted_markdown": "...",
  "structured_data": {
    "posts": [...],
    "content_format": "text | image | carousel",
    "carousel_data": {
      "recommended": true,
      "slide_count": 7,
      "slide_outlines": [
        {
          "slide_number": 1,
          "headline": "Hook statement",
          "body_points": ["point 1", "point 2"],
          "visual_note": "Bold text on dark gradient background"
        }
      ],
      "carousel_generation_prompt": "Create a 7-slide LinkedIn carousel with my brand colors (dark navy #0A1628, accent blue #3B82F6, white text). Slide 1: ..."
    },
    "metadata": {...}
  }
}

What Part-1 n8n Workflow Needs to Store in Notion

After Node 5 runs, the Notion update node should map:

Part-2 Implementation Notes

Decision Router

Add a Switch node after reading the Notion entry:

IF LinkedIn_Content_Format == "carousel"
  → Carousel posting branch (API Document post)
ELSE IF LinkedIn_Content_Format == "image"
  → Standard image posting branch (API Image post)
ELSE
  → Standard text-only posting branch (API Text post)

Carousel Posting Branch

1. Read Drive Folder: Use the existing Google Drive connection to find the carousel PDF in the entry's Drive folder
2. Download PDF: Download the file as binary data
3. LinkedIn API Post with Document:
   • LinkedIn's API supports document posts (PDF uploads) via the ugcPosts endpoint
   • The formatted_markdown text becomes the post caption
   • The PDF is uploaded as a document attachment
   • Reference: LinkedIn Document Share API

Manual Workflow (Interim)

Until Part-2 carousel automation is built:

1. Check Notion for entries where LinkedIn_Content_Format = carousel
2. Copy the LinkedIn_Carousel_Prompt
3. Paste into Claude Desktop (with your brand project active)
4. Generate slide images, compile into PDF
5. Upload PDF to the entry's Google Drive folder
6. Update LinkedIn_Carousel_PDF_URL in Notion
7. Post manually or trigger Part-2

Brand Project Setup (Claude Desktop)

Create a Claude Desktop Project called "OmniPost LinkedIn Carousels" with these persistent instructions:

You are a LinkedIn carousel designer for Aman Suryavanshi.

Brand tokens:
- Primary: #0A1628 (dark navy background)
- Accent: #3B82F6 (electric blue for highlights)
- Text: #FFFFFF (white) and #94A3B8 (muted gray for secondary)
- Font: Inter or equivalent clean sans-serif
- Logo/Avatar: Include on Slide 1 and Final Slide

Design rules:
- Each slide is 1080x1080px (square format for LinkedIn)
- Slide 1: Hook headline, large bold text, Aman's name + title
- Slides 2-N: One insight per slide, headline + 2-3 bullet points max
- Final Slide: CTA + LinkedIn profile URL + "Follow for more AI automation insights"
- Keep text large enough to read on mobile (min 24px equivalent)
- Use visual hierarchy: headline in white/accent, body in lighter weight
- Include slide numbers (e.g., "3/7") in bottom corner

Verification Checklist

Before considering Part-2 carousel support complete:

• Notion schema has all 4 new fields added
• Part-1 n8n workflow maps Node 5 carousel fields to Notion correctly
• Claude Desktop brand project is configured with design tokens
• Test: Run Part-1 on a source with 4+ technical points, verify content_format: carousel is output
• Test: Take carousel_generation_prompt, generate slides in Claude Desktop, verify quality
• Part-2 IF/Switch node routes carousel entries correctly
• Part-2 can post PDF documents via LinkedIn API (or manual posting is documented)