Substack

Substack MCP Server

Official remote Model Context Protocol server that connects a Substack publication to an MCP-capable AI assistant (Claude, ChatGPT, Cursor). Read-only: it serves publication dashboard metrics, subscriber counts, revenue, post performance, traffic sources, retention and publication settings. It cannot publish posts, send Notes or modify the account, and cannot read profile or Notes activity. Authorization is OAuth 2.1 authorization-code with PKCE S256 against https://substack.com, scope mcp:read, with RFC 9728 protected resource metadata advertised in the endpoint's own 401 challenge. Connecting requires Admin role on a Bestseller publication.

GitHub

Documentation

📖
Documentation
https://support.substack.com/hc/en-us/articles/50834026608916-How-to-connect-Substack-to-your-AI-Assistant
📖
GettingStarted
https://support.substack.com/hc/en-us/articles/50834026608916-How-to-connect-Substack-to-your-AI-Assistant
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/substack/refs/heads/main/authentication/substack-authentication.yml

Other Resources

🔗
MCPServer
https://raw.githubusercontent.com/api-evangelist/substack/refs/heads/main/mcp/substack-mcp.yml
🔗
OAuthScopes
https://raw.githubusercontent.com/api-evangelist/substack/refs/heads/main/scopes/substack-scopes.yml

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Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

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API entry from apis.yml

apis.yml Raw ↑ 
name: Substack MCP Server
description: 'Official remote Model Context Protocol server that connects a Substack publication to an
  MCP-capable AI assistant (Claude, ChatGPT, Cursor). Read-only: it serves publication dashboard metrics,
  subscriber counts, revenue, post performance, traffic sources, retention and publication settings. It
  cannot publish posts, send Notes or modify the account, and cannot read profile or Notes activity. Authorization
  is OAuth 2.1 authorization-code with PKCE S256 against https://substack.com, scope mcp:read, with RFC
  9728 protected resource metadata advertised in the endpoint''s own 401 challenge. Connecting requires
  Admin role on a Bestseller publication.'
humanURL: https://support.substack.com/hc/en-us/articles/50834026608916-How-to-connect-Substack-to-your-AI-Assistant
baseURL: https://mcp.substack.com/api/v1/mcp
tags:
- MCP
- Agents
- Analytics
- Read Only
- Authentication
tags_raw:
- MCP
- Agents
- Analytics
- Read-Only
- OAuth
properties:
- type: MCPServer
  url: mcp/substack-mcp.yml
- type: Documentation
  url: https://support.substack.com/hc/en-us/articles/50834026608916-How-to-connect-Substack-to-your-AI-Assistant
- type: GettingStarted
  url: https://support.substack.com/hc/en-us/articles/50834026608916-How-to-connect-Substack-to-your-AI-Assistant
- type: Authentication
  url: authentication/substack-authentication.yml
- type: OAuthScopes
  url: scopes/substack-scopes.yml