Mastercard Developers MCP vs Substack MCP Server

In-depth architectural comparison of the Mastercard Developers MCP and Substack MCP Server 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 Mastercard Developers MCP when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Mastercard Developers MCP Details

Choose Substack MCP Server when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Substack MCP Server Details

Feature & Specification Comparison

Specification	Mastercard Developers MCP Developer Tools	Substack MCP Server Developer Tools
Summary	Access Mastercard Developers APIs, documentation, and API specifications through MCP.	Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP.
Category & Scope	Developer Tools	Developer Tools

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": {
    "mastercard-developers-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mastercard/developers-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "substack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "substack-mcp@latest"
      ]
    }
  }
}

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