Joern

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Joern to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "joern-1": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-joern-1"
      ],
      "env": {}
    }
  }
}

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

Architecture & Capabilities

System Overview

Provides AI assistants with static code analysis capabilities using Joern's Code Property Graph (CPG).

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Joern

Joern (specifically joern-mcp) is a production-ready Model Context Protocol (MCP) server designed to empower AI assistants with advanced static code analysis capabilities. It leverages Joern's powerful Code Property Graph (CPG) technology to provide deep insights into codebases for improved security and quality.

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