Show HN: The Posting Substack API

Category: devtools

Tags: substack, api-client, mcp, cli, python

Score: 3.7/10 (Innovation: 3, Technical: 4, Documentation: 6, Utility: 4)

A Python client, CLI, and MCP server for interacting with Substack's internal API, enabling programmatic posting, note creation/deletion, and draft management. It fills a niche by providing unofficial API access to Substack, but relies on reverse-engineered endpoints and session cookies.

Target audience: developers and content creators automating Substack workflows

Repository: https://apisubstack.com/

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