AnthonyDavidAdams/substack-api-reference

Unofficial Substack API reference — 129 verified endpoints with body shapes, gathered across 14 capture rounds. Read + write side fully mapped. Includes Claude Agent SDK skill manifest and TypeScript client.

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2mo agoLast push, which is what freshness is scored on

MITLicence, which decides whether bodies are shown

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substack-api

AnthonyDavidAdams/substack-api-reference

Skill Claude CodeCodex

Use Substack's unofficial cookie-authenticated API to read posts, create drafts, publish issues, and manage publications on behalf of a logged-in Substack user. Required when the user asks to post to Substack, schedule a Substack send, mirror content to Substack, or extract data from a Substack account.

5 2mo ago A 68 tokens original MIT