Automate YouTube Shorts creation with Ssemble AI Clipping MCP Server + n8n

Built with n8n
1

Hey n8n community :waving_hand:

I wanted to share how you can use n8n’s built-in MCP Client Tool to connect to the Ssemble AI Clipping MCP server and automate short-form video creation from YouTube videos — no custom nodes needed.

:rocket: What is Ssemble AI Clipping?

Ssemble is a video processing platform that takes YouTube videos and automatically creates TikTok/Reels/Shorts-style clips with:

  • AI-selected highlight moments with viral scoring
  • 9+ caption templates (Karaoke, Bold, Minimal, etc.)
  • 45+ background music tracks
  • 30+ gameplay overlays (Minecraft, GTA, Subway Surfer, etc.)
  • 159+ meme hook clips (2–5 second attention grabbers)
  • AI-generated titles, descriptions, and hashtags

We recently published an MCP server that exposes all of this as 9 tools any MCP client can use.

:electric_plug: How to connect it in n8n

Since n8n has native MCP support via the MCP Client Tool node, setup is straightforward:

Step 1 — Prerequisites

  • Self-hosted n8n (v1.88.0+)
  • Set environment variable:
    N8N_COMMUNITY_PACKAGES_ALLOW_TOOL_USAGE=true
  • Get a Ssemble API key from: https://app.ssemble.com (Settings → API Keys)

Step 2 — Add MCP Client Tool node

  • Add MCP Client Tool node

  • Transport: SSE

  • URL: https://mcp.ssemble.com/mcp

  • Authentication: Header Auth

    • Header Name: X-Ssemble-API-Key
    • Header Value: sk_ssemble_your_key_here

  • Tools: All (or select specific)

Step 3 — Connect to AI Agent

  • Add an AI Agent node (Claude, OpenAI, etc.)
  • Connect MCP Client Tool as a tool input
  • The agent now has access to all Ssemble tools

:toolbox: Available tools (9 total)

Tool Description
create_short Submit YouTube URL for clipping (returns request ID)
get_status Check progress (0–100%)
get_shorts Get clips + download URLs + viral scores
list_requests List all requests
delete_request Delete a request
list_templates Browse caption styles
list_music Browse music tracks
list_game_videos Browse gameplay overlays
list_meme_hooks Browse meme clips

:light_bulb: Example workflows

1. Content repurposing pipeline

RSS → detect new YouTube video → create_short → wait/poll → get_shorts → post to Slack/Discord

2. Batch processing

Google Sheet (URLs) → loop → create_short → collect request IDs → poll → save results back

3. AI-powered automation

Webhook → user input (“make it funny with gaming overlay”) → AI Agent chooses tools → generate clips → return results

:hourglass_not_done: Important: Async processing pattern

Video processing takes 5–30 minutes, so:

  1. create_short → returns requestId instantly
  2. get_status → check progress
  3. get_shorts → fetch results

:backhand_index_pointing_right: Tip: Add a Wait node (5–10 min) or loop with polling until completed.

:link: Links

Would love to see what you build with this :rocket:
Happy to answer any questions!

5

Hey friend!

Cool setup — this is a great use case for n8n.

For anyone looking for an alternative that works with both MCP and direct HTTP Request nodes, I’ve been using WayinVideo API (https://wayin.ai/api) for the same kind of workflow.

A few things that work well for me:

  • AI Clipping — automatically picks the best viral moments, adds captions, reframes to 9:16 — all in one API call

  • Find Moments — you can describe what you want in plain English like “product demo” or “funny reaction” and it finds those exact clips

  • No MCP required — works directly with n8n’s HTTP Request node, so it runs on both Cloud and self-hosted without any extra setup

  • Processing time is around 90 seconds for most videos — much faster than 5–30 minutes

The flow is simple:

Form Trigger / Webhook → POST video URL to WayinVideo API → Wait 90s → GET clips → each clip has download link, viral score, title, tags

Also supports YouTube, Zoom, TikTok, Vimeo, and more — just paste the URL.

Docs here if anyone wants to check it out: https://wayin.ai/api-docs/ai-clipping/

Happy to share the n8n workflow JSON too!

1 Like
6

Hey ssemble!

Nice guide — the webhook callback tip from Benjamin is a good catch, polling with Wait nodes does eat up execution slots fast.

Been using a similar setup for YouTube Shorts creation but without the MCP layer. The one thing that bugged me about MCP-based tools is they only work on self-hosted n8n with that environment variable set — which cuts out anyone on n8n Cloud.

What I switched to uses plain HTTP Request nodes so it runs anywhere — Cloud or self-hosted, no extra config needed. You just POST the YouTube URL, get back clips ranked by viral score with titles, timestamps, and download links. It also does 9:16 auto-reframe and animated captions in the same call, so no separate editing step.

The big difference I noticed is processing time — most videos come back in around 90 seconds instead of 5–30 minutes, which makes the polling pattern much simpler to manage.

Also has a Find Moments feature where you describe what you want in plain English — like “product demo” or “audience laughing” — and it pulls exactly those clips. Useful when you don’t just want the top viral moments but something specific.

Docs here if anyone wants to compare: https://wayin.ai/api-docs/ai-clipping/

Happy to share the workflow JSON!

7

Thanks for sharing. This guide really helps me.