InkVoice — XRechnung & E Invoicing vs ToughTongue AI

In-depth architectural comparison of the InkVoice — XRechnung & E Invoicing and ToughTongue AI 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?

I

Choose InkVoice — XRechnung & E Invoicing 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 InkVoice — XRechnung & E Invoicing Details

Choose ToughTongue AI 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 ToughTongue AI Details

Feature & Specification Comparison

Specification	I InkVoice — XRechnung & E Invoicing Developer Tools	ToughTongue AI Developer Tools
Summary	Create and validate XRechnung (EN 16931), check Leitweg-IDs, calculate German VAT.	Create voice-agent scenarios, pull session analytics, place SIP calls, schedule meeting bots.
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": {
    "inkvoice-xrechnung-e-invoicing-2": {
      "url": "https://inkvoice.net/mcp"
    }
  }
}

{
  "mcpServers": {
    "toughtongue-ai": {
      "command": "npx",
      "args": [
        "-y",
        "plugins"
      ]
    }
  }
}

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