Mastercard Developers MCP vs RealWorldAPIs

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

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

Explore RealWorldAPIs Details

Feature & Specification Comparison

Specification	Mastercard Developers MCP Developer Tools	RealWorldAPIs Developer Tools
Summary	Access Mastercard Developers APIs, documentation, and API specifications through MCP.	API discovery and selection for AI agents connecting to the physical world.
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": {
    "realworldapis": {
      "url": "https://mcp.realworldapis.com/mcp"
    }
  }
}

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