MCP Server

Attestwire MCP Server

Name: Attestwire MCP Server
Author: com.attestwire

com.attestwire/en16931

Registry

What is the Attestwire MCP server?

EN 16931: validate invoice data or a UBL/CII file, emit UBL or CII XML. XRechnung, Peppol. Not PDF.

How to install Attestwire

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ATTESTWIRE_API_KEY
secret
Optional. An Attestwire API key. Five of the nine tools work without it; validate_invoice, validate_invoice_xml, generate_invoice and get_upgrade_link require one. The issue_api_key tool mints a free key (100 documents/month, no card), but minting does not authenticate a live connection: save the key, configure it here, and reconnect.
ATTESTWIRE_MCP_URL
Optional endpoint override. Defaults to https://api.attestwire.com/mcp.
Authorization
secret
Optional. `Bearer <your Attestwire API key>`. Five of the nine tools work without it; validate_invoice, validate_invoice_xml, generate_invoice and get_upgrade_link require one. The issue_api_key tool mints a free key (100 documents/month, no card), but minting does not authenticate a live connection: save the key, configure it here, and reconnect.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "en16931": {
      "command": "npx",
      "args": [
        "-y",
        "@attestwire/mcp"
      ],
      "env": {
        "ATTESTWIRE_API_KEY": "<YOUR_ATTESTWIRE_API_KEY>",
        "ATTESTWIRE_MCP_URL": "<YOUR_ATTESTWIRE_MCP_URL>",
        "Authorization": "<YOUR_AUTHORIZATION>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "en16931": {
      "command": "npx",
      "args": [
        "-y",
        "@attestwire/mcp"
      ],
      "env": {
        "ATTESTWIRE_API_KEY": "<YOUR_ATTESTWIRE_API_KEY>",
        "ATTESTWIRE_MCP_URL": "<YOUR_ATTESTWIRE_MCP_URL>",
        "Authorization": "<YOUR_AUTHORIZATION>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "en16931": {
      "command": "npx",
      "args": [
        "-y",
        "@attestwire/mcp"
      ],
      "env": {
        "ATTESTWIRE_API_KEY": "<YOUR_ATTESTWIRE_API_KEY>",
        "ATTESTWIRE_MCP_URL": "<YOUR_ATTESTWIRE_MCP_URL>",
        "Authorization": "<YOUR_AUTHORIZATION>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "en16931": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@attestwire/mcp"
      ],
      "env": {
        "ATTESTWIRE_API_KEY": "<YOUR_ATTESTWIRE_API_KEY>",
        "ATTESTWIRE_MCP_URL": "<YOUR_ATTESTWIRE_MCP_URL>",
        "Authorization": "<YOUR_AUTHORIZATION>"
      }
    }
  }
}

Claude Code

claude mcp add en16931 --env ATTESTWIRE_API_KEY=<YOUR_ATTESTWIRE_API_KEY> --env ATTESTWIRE_MCP_URL=<YOUR_ATTESTWIRE_MCP_URL> --env Authorization=<YOUR_AUTHORIZATION> -- npx -y @attestwire/mcp