substack.com
Unlike Substack post
Input
url requiredFull URL of the Substack post, e.g. https://example.substack.com/p/my-post-slug
Output
url requiredliked requiredpostId requiredList Substack newsletter posts
List a Substack publication's posts from its archive, newest or top first, with optional keyword search and pagination. Returns each post's title, slug, publish date, paywall status, and reaction/comment/restack counts.
Post Substack comment
Post a comment on a Substack post as the logged-in account. The account needs a display name set up on Substack first (via any post's comment box) — the script fails loudly with instructions if it isn't.
Subscribe to Substack publication
Subscribe the logged-in account to a Substack publication's free tier.