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Substack Gateway

Read and manage Substack profiles, posts, notes, and drafts through Substack Gateway

Actions12

Notes → Create

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Summary

Publish a Substack note using Markdown content, with an optional attachment URL or identifier. The operation sends the content to the configured Substack Gateway and returns the created note’s ID.

Inputs

  • Content (required) — Markdown content to publish as the note; must not be empty.
  • Attachment — Optional attachment URL or identifier. Blank values are omitted from the request.

Output shape

A single record containing the new note’s numeric id.

The Gateway response is validated and reduced to {"id": number}; the operation does not return the note body.

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