Substack Write API
Prepare a reviewed newsletter edition without assuming an undocumented publishing interface.
This topic concerns an editorial workflow for a Substack publication you manage. It does not claim that WriteAPI.com operates Substack products or provides a supported remote publishing endpoint. Confirm the options available to your own publication before choosing an automated integration or an editor-led transfer.
Build a portable edition
Keep a subject or title, opening, article sections, references, and review notes in a format that can be inspected independently. Decide which version is the canonical article and whether the edition is an excerpt, adaptation, or complete republication.
Use a deliberate publishing handoff
Transfer only approved content through a supported route. Review formatting, media, references, and distribution choices in the destination. Do not invent API paths or imply that a draft transfer authorizes sending it to subscribers.
The preview matches the approved version and the publication owner has confirmed the intended release action. Keep reader data out of unrelated content-generation tools and use the destination’s established audience controls.
Take the next step
For a worked editorial approach, read RSS feed publishing: stable links, full articles, happy readers. Then explore Newsletter Write API for the connected part of the workflow.