GTM API: LinkedIn MCP Server vs Postfast MCP

In-depth architectural comparison of the GTM API: LinkedIn MCP Server and Postfast 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.

Which MCP Server Should You Choose?

Choose GTM API: LinkedIn MCP Server when:

• You need dedicated capabilities in the Social Media domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Freemium).
• You have access to required keys: GTM_API_KEY.
• Primary tools included: Three MCP discovery and execution tools, 160+ typed LinkedIn actions, OAuth and bearer-token authentication.

Explore GTM API: LinkedIn MCP Server Details

Choose Postfast MCP when:

• You need dedicated capabilities in the Social Media domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (BYOK (Pay Provider Direct)).
• You have access to required keys: POSTFAST_API_KEY, POSTFAST_API_URL.

Feature & Specification Comparison

Specification	GTM API: LinkedIn MCP Server Social Media	Postfast MCP peturgeorgievv-factory Social Media
Summary	Managed LinkedIn MCP server for AI agents: search, connect, message and enrich on accounts you own.	Schedule and manage social media posts across 10 platforms (Instagram, Facebook, TikTok, X, LinkedIn, YouTube, Threads, Pinterest, Bluesky, Telegram) from any MCP-compatible AI assistant.
Category & Scope	Social Media

Tools & Capabilities Breakdown

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).

{
  "mcpServers": {
    "gtm-api-linkedin-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@gtm-api/linkedin-mcp"
      ],
      "env": {
        "GTM_API_KEY": "YOUR_GTM_API_KEY_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "peturgeorgievv-factory-postfast-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "postfast-mcp"
      ],
      "env": {
        "POSTFAST_API_KEY": "YOUR_POSTFAST_API_KEY_HERE",
        "POSTFAST_API_URL": "YOUR_POSTFAST_API_URL_HERE"
      }
    }
  }
}

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