Substack Publish API
Substack workflows should begin with what the platform officially supports. Focus on content portability and documented import or export paths instead of assuming an automated publishing connector.
A practical starting point
Maintain an independent source archive containing titles, bodies, imagery, and publication context. Identify whether the task is a new issue, archive migration, or a summary on another channel.
Sharing source material does not make every channel identical. A newsletter is an edited issue, an RSS feed is a machine-readable publication surface, and a social post is a destination-specific adaptation. These routes focus on the editorial relationship between those outputs and the approval or delivery boundaries that must remain visible.
Keep the boundary clear
Review current documented capabilities and test a small sample. Do not treat undocumented internal endpoints as a stable contract. PublishAPI.com does not supply or operate a Substack integration.
Concepts, not a bundled service
This is an editorial guide to Substack Publish API. Evaluate the pattern against your actual destination, permissions, and operating requirements. PublishAPI.com does not provide a live connector, endpoint, or account for this topic.
Turn the idea into a reviewable plan
Name the canonical home of a story before adapting it. Decide whether each channel receives full content, a summary, or an original introduction. Inspect its actual reading surface and plan how corrections will be handled. Use the RSS guide for feeds and the Ghost newsletter guide for a coordinated website-and-issue workflow.
Continue with Publish an RSS feed readers can rely on, or compare the related routes below. Keep a record of the decisions that apply to your project rather than assuming a label guarantees a particular capability.