Substack Plans Pricing
Substack Plans Pricing is the machine-readable pricing-plan profile for Substack on the APIs.io network, conforming to the API Commons Plans specification.
It defines 2 plans, with named plans including Publishing, Paid subscriptions.
Tagged areas include Newsletters, Publishing, Creator Economy, Subscription, and Email.
Plans
Publishing on Substack is free regardless of subscriber count. No platform fee until paid subscriptions are enabled.
Substack takes 10% of each paid-subscription transaction. Stripe's fees apply on top and are charged by Stripe, not Substack.
Work with this as data
Every plan here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for plans
4 MCP tools reach this
find_plansBrowse and filter every plan in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/plans/substack-plans-pricing"curl "https://apis.io/api/v1/plans?limit=25"Discovery needs no key. Ratings and market analysis are Pro.