N8n to Substack: Automated publishing solutions needed

Hi everyone,

I’m developing an AI-generated daily newsletter using n8n to aggregate content from various RSS feeds into an HTML format for Substack publication. However, I’ve encountered a challenge: Substack currently doesn’t provide an API for automated posting.

I’ve set up n8n workflows to handle the RSS aggregation and HTML generation, but I’m stuck at the final step. I need a way to programmatically publish these AI-generated newsletters to Substack. I’m wondering if anyone knows of third-party tools or alternative approaches that could help bridge this gap?

The core n8n automation is working well for content collection and processing, but the automation of the final publishing step to Substack is where I’m blocked.

Any suggestions or workarounds would be greatly appreciated!

Thanks in advance!

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:

Welcome to the community @Eloise_Chou !

Tip for sharing information

Pasting your n8n workflow


Ensure to copy your n8n workflow and paste it in the code block, that is in between the pairs of triple backticks, which also could be achieved by clicking </> (preformatted text) in the editor and pasting in your workflow.

```
<your workflow>
```

That implies to any JSON output you would like to share with us.

Make sure that you have removed any sensitive information from your workflow and include dummy or pinned data with it!


I found this Python based app claiming it has implemented posting to Substack, GitHub - ma2za/python-substack: Substack API python implementation. Hopefully it is of some help to you. Though, integrating it with n8n is yet another challenge of its own.

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