How to post to Substack via API

How to post to Substack via API

Substack does not ship an official public posting API. API Substack gives authors an unofficial way to post to Substack via API.

Call our REST endpoints with your API key from any HTTP client or script.

Steps

1) Register on API Substack (required). 2) Generate your API key. 3) Connect your Substack publication. 4) post through API using that key.

You must create an account to receive an API key. Without registration, posting via API Substack will not work.