On GitHub. All I did was search "Substack scraping" and it cam right up. Creators need to demand protection.

To scrape a specific number of posts:

python substack_scraper.py --url https://example.substack.com --directory /path/to/save/posts --number 5

Viewing Markdown Files in Browser

To read the Markdown files in your browser, install the Markdown Viewer browser extension. But note, we also save the files as HTML for easy viewing, just set the toggle to HTML on the author homepage.

About

Script to scrape free and premium Substack posts, saving them as Markdown files. Also generates HTML interfaces to allow you to browse and sort the markdown files for each author.