Arc42

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Arc42 to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "arc42": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-arc42"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Facilitate AI-assisted software architecture documentation using the arc42 template with tools for initialization, generation, updates, and status tracking.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Arc42

Arc42 is an MCP (Model Context Protocol) server designed to facilitate AI-assisted software architecture documentation. It helps you create, update, and manage comprehensive architecture documentation based on the industry-proven arc42 template, making it easier to maintain consistent and high-quality docs.

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