Posting automatically on social media with n8n and an API

Tips & Tricks
1

The Goal

I wanted to bridge the gap between my content ideas and actual social media publishing without manually logging into five different platforms. I’ve built a workflow that takes any trigger (Google Sheets, RSS, or Typeform) and uses the SchedPilot API to handle the AI caption generation and multi-platform scheduling automatically.

They also come with an API documentation

The Workflow

  1. Trigger: A new row in Google Sheets (topic & link).

  2. Logic: Format the data for the API.

  3. Action: Call the SchedPilot API via the HTTP Request node.

  4. Outcome: The post is AI-optimized and queued for LinkedIn, X (Twitter), and Instagram instantly.

How to set it up

To make this work, you’ll need a SchedPilot account (where you get your API key) and a standard n8n instance.

1. The HTTP Request Node Settings:

  • Method: POST

  • URL: https://api.schedpilot.com/v1/publish (or your specific endpoint)

  • Headers: Authorization: Bearer YOUR_API_KEY

  • Body: ```json { “content”: “{{$node[“Google Sheets”].json[“Topic”]}}”, “platforms”: [“linkedin”, “twitter”], “schedule_type”: “ai_optimized” }

4

calling one endpoint that fans out to linkedin, twitter, and instagram at once is convenient until one of those three fails and you’re not sure which without digging into the response. worth checking whether schedpilot’s response tells you per-platform status or just a single success/fail for the whole call, that distinction matters a lot once you’re running this daily and something inevitably breaks on just one network.

the ai-optimized caption step is worth spot-checking manually for a while too, not because it’s unreliable, just because linkedin and twitter want pretty different caption lengths and tones and a single generation pass sometimes doesn’t adjust enough between the two.

i ended up on blotato for a similar setup mostly for the per-platform status piece, it’s a postSubmissionId you poll after each publish call, create post returns the id, then a separate status check tells you scheduled vs published vs failed per platform instead of trusting one shared response, so a twitter failure doesn’t leave me guessing whether linkedin went through too. not saying swap what you’ve built, just something to check for, if schedpilot’s collapsing the per-platform result into one status that’s the actual gap worth chasing down.