MCP E Invoicing Core vs Loyal Spark

In-depth architectural comparison of the MCP E Invoicing Core and Loyal Spark 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 MCP E Invoicing Core 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 MCP E Invoicing Core Details

Choose Loyal Spark 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 Loyal Spark Details

Feature & Specification Comparison

Specification	MCP E Invoicing Core Developer Tools	Loyal Spark Developer Tools
Summary	Base package for European e-invoicing MCP servers with shared models, XML utils, and OAuth2 client.	Onchain loyalty MCP on Base: programs, mint, rewards, vouchers for AI agents.
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": {
    "mcp-e-invoicing-core": {
      "command": "uvx",
      "args": [
        "mcp-einvoicing-core"
      ]
    }
  }
}

{
  "mcpServers": {
    "loyal-spark": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ]
    }
  }
}

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