What is the key difference between Posteverywhere MCP and Substack MCP?

Posteverywhere MCP belongs to the Social Media category with local stdio execution, while Substack MCP belongs to the Social Media category with local stdio execution.

How do I install Posteverywhere MCP or Substack MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Posteverywhere MCP and Substack MCP free or paid?

Posteverywhere MCP operates under a Freemium model (API Key required). Substack MCP operates under a Free / Open Source model (other).

Which MCP server has more tools and community activity?

Posteverywhere MCP lists 15 tools with 3 views and 3 GitHub stars. Substack MCP lists 14 tools with 4 views and 35 GitHub stars.

Can I use both Posteverywhere MCP and Substack MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Posteverywhere MCP vs Substack MCP

In-depth architectural comparison of the Posteverywhere MCP and Substack MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Posteverywhere MCP

Social Media · Local stdio

Quality: 64/100 (Good) | Auth: API Key required

Substack MCP

Social Media · Local stdio

Quality: 68/100 (Great) | Auth: other

Verdict Summary: Choose Posteverywhere MCP if you need specialized Social Media tools running via a local process. Choose Substack MCP if your workspace requires Social Media integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Posteverywhere MCP when:

You need dedicated capabilities in the Social Media domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Freemium).
You have access to required keys: POSTEVERYWHERE_API_KEY.
Primary tools included: list_accounts, get_account, list_posts.

Explore Posteverywhere MCP Details

Choose Substack MCP when:

You need dedicated capabilities in the Social Media domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Free / Open Source).
You have access to required keys: SUBSTACK_PUBLICATION_URL, SUBSTACK_SESSION_TOKEN, SUBSTACK_USER_ID, SUBSTACK_MCP_HOME.
Primary tools included: .

Feature & Specification Comparison

Specification	Posteverywhere MCP posteverywhere Social Media	Substack MCP conorbronsdon Social Media
Summary	Hosted MCP server to schedule and publish across 11 social platforms (Instagram, LinkedIn, TikTok, X, YouTube, Facebook, Threads, Pinterest, Bluesky, Discord, Telegram). 32 tools covering posts, campaigns, bulk operations, media, analytics, webhooks, and AI captions. Connect with one URL, or run locally via npx -y @posteverywhere/mcp.	MCP server for Substack — read posts, manage drafts, publish Notes, get comments, and upload images. Safe by design: cannot publish or delete posts.
Category & Scope

Tools & Capabilities Breakdown

Posteverywhere MCP Tools (15)

list_accounts

list all connected social accounts and their health status

get_account

get details for a specific account (token expiry, can-post status)

list_posts

list posts filtered by status (`scheduled`, `published`, `failed`, `draft`) or platform. Drafts include their target accounts + per-platform content so you can review them before publishing.

get_post

get full details for a single post including all destinations (for drafts, the saved accounts + per-platform content)

create_post

publish now, schedule for later, **or save as a draft for human review** (`draft: true`)

schedule_post

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Posteverywhere MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "posteverywhere-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@posteverywhere/mcp"
      ],
      "env": {
        "POSTEVERYWHERE_API_KEY": "YOUR_POSTEVERYWHERE_API_KEY_HERE"
      }
    }
  }
}

Substack MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "conorbronsdon-substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@conorbronsdon/substack-mcp"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "YOUR_SUBSTACK_PUBLICATION_URL_HERE",
        "SUBSTACK_SESSION_TOKEN": "YOUR_SUBSTACK_SESSION_TOKEN_HERE",
        "SUBSTACK_USER_ID": "YOUR_SUBSTACK_USER_ID_HERE",
        "SUBSTACK_MCP_HOME": "YOUR_SUBSTACK_MCP_HOME_HERE"
      }
    }
  }
}

Frequently Asked Questions

Posteverywhere MCP is categorized under Social Media and uses a local stdio subprocess. In contrast, Substack MCP belongs to Social Media using local stdio subprocess. Select Posteverywhere MCP when you need capabilities focused on social media and Substack MCP when you require tools for social media.

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