The Posting Substack API
The posting API for Substack authors. Draft, publish, and schedule posts via Python SDK, CLI, or MCP, without the browser editor.
Quick answer
What is The Posting Substack API?
At a glance
- Category
- Hosting & Devtools
- Pricing
- Not disclosed
- Starting price
- Not disclosed
- Free tier
- No
- Platforms
- Not disclosed
- Launched
- Not disclosed
- Company
- Not disclosed
About The Posting Substack API
The posting API for Substack authors. Draft, publish, and schedule posts via Python SDK, CLI, or MCP, without the browser editor. All agents supported Works with Claude, Codex, Cursor, and OpenCode . If you write and publish a newsletter, this is for you. Connect your publication, authenticate with your session, and post without living in the browser editor. Optional link attachment is created first, then the note is posted.\n\nPython: create_note()\nCLI: create-note\nMCP: create_note\nRate limit: 1 request per second\n\n# Create note, Request\nPublish a Substack Note (feed comment).
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