Substack Newsletter MCP

io.github.dancerdan15Published by GitHub account dancerdan15v0.1.0Updated Oct 29, 2026

Substack newsletter, posts & podcast search

VerifiedStreamable HTTPWeb executableWeb Search & Scraping

Overview

AI-generated overview

Remote MCP server that lets an assistant search Substack newsletters, posts and podcasts.

What you can do
  • Search Substack newsletters, posts and podcast content from an assistant.
  • The manifest lists no individual tools, so the exact operations are not documented; the stated purpose is newsletter, post and podcast search.
When to use it
Useful when you want an assistant to look up Substack publications, individual posts or podcast episodes while researching a topic or tracking writers.
Requirements
Remote streamable HTTP endpoint hosted on Apify; no local package or runtime needed. OAuth authentication is required. No environment variables or headers are declared.
Before you install
Access requires OAuth sign-in, so the server is tied to your account. Only search is described; no write actions are documented. The tool list is not published, so review the tools exposed after connecting before relying on it.

Installation

In SourceWeft

  1. Open Substack Newsletter MCP in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.dancerdan15%2Fsubstack-newsletter-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "substack-newsletter": {
      "type": "http",
      "url": "https://mutualistic-housing--substack-newsletter-mcp.apify.actor/mcp"
    }
  }
}

Tools

0
This server asks for a credential such as an API key, so SourceWeft could not read its tools without one and has not indexed them.

Version history

1
  1. v0.1.0LatestOct 29, 2026

Score

67% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.