CodeQL N1ght MCP Server

A Model Context Protocol (MCP) server for integrating CodeQL N1ght tool with AI assistants.

Overview

This MCP server provides a standardized interface for AI assistants to interact with the CodeQL N1ght tool, enabling automated code analysis workflows including environment setup, database creation, and security scanning.

Features

• Environment Installation: One-click setup of JDK, Ant, and CodeQL dependencies
• Database Creation: Create CodeQL databases from JAR/WAR/ZIP files with configurable decompilers
• Security Scanning: Execute security scans with customizable query packs
• Parallel Processing: Support for goroutines and multi-threading
• Flexible Configuration: Customizable paths, timeouts, and caching options

Available Tools

version

Get version or help information from the CodeQL N1ght executable.

install_environment

Install required dependencies (JDK, Ant, CodeQL) with optional custom URLs.

create_database

Create a CodeQL database from target files (JAR/WAR/ZIP) with options for:

• Decompiler selection (procyon/fernflower)
• Dependency handling (none/all)
• Parallel processing
• Cache management

scan_database

Execute security scans on CodeQL databases with configurable:

• Database and query pack paths
• Parallel processing options
• Cache control

run_codeql_n1ght

Generic interface for direct command execution with custom arguments.

Installation

1. Install dependencies:

pip install -r requirements.txt

1. Ensure the CodeQL N1ght executable is available at the configured path (default: J:\mcp\codeql-n1ght.exe)

Usage

Run the MCP server in STDIO mode:

python codeql_n1ght_mcp_server.py

Configuration

• Default Executable Path: J:\mcp\codeql-n1ght.exe
• Path Compatibility: Supports both Windows (J:\path) and Unix-style (/j:/path) path formats
• Timeouts: Configurable per operation (default: 10 minutes for general operations, 20 hours for database/scan operations)

Response Format

All tools return a standardized response format:

{
  "returncode": 0,
  "stdout": "command output",
  "stderr": "error output",
  "timeout": false
}

Error Handling

• Executable Not Found: Returns error if CodeQL N1ght executable is missing
• Invalid Parameters: Validates decompiler and dependency options
• Timeout Management: Configurable timeouts with process termination
• Path Resolution: Automatic path normalization and validation

License

This project is open source and available under the MIT License.