LayerOne (DocX + Sign)

Overview

LayerOne (DocX + Sign) is a Model Context Protocol (MCP) server: MCP server for LayerOne DocX (documents & Factur-X) and Sign (e-signature) APIs. Because it speaks the Model Context Protocol, AI assistants can use LayerOne (DocX + Sign) as a set of callable tools instead of you copy-pasting between apps.

It runs locally: the npm package layerone-mcp speaks MCP over stdio on your machine. Configuration happens through environment variables — you'll need DOCX_API_KEY, SIGN_API_KEY. The current release is v1.0.0, with source at GOLayerone/layerone-mcp on GitHub.

On mcp.site, LayerOne (DocX + Sign) sits in the Development category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain LayerOne (DocX + Sign) for GOLayerone, claim this listing to verify ownership, earn the Verified badge, and keep the details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "layerone_docx_sign": {
      "command": "npx",
      "args": [
        "-y",
        "layerone-mcp"
      ],
      "env": {
        "DOCX_API_KEY": "<docx-api-key>",
        "SIGN_API_KEY": "<sign-api-key>"
      }
    }
  }
}

Requires DOCX_API_KEY, SIGN_API_KEY