JaDX
A Pure-Java MCP Server for JaDX Android Reverse Engineering Tool
What is JaDX?
JaDX is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to pure-java mcp server for jadx android reverse engineering tool
A Pure-Java MCP Server for JaDX Android Reverse Engineering Tool
This server falls under the Security category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A Pure-Java MCP Server for JaDX Android Reverse Engineering
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx jadxConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use JaDX
The JADX MCP Server is a pure-Java MCP server that exposes the decompilation and analysis capabilities of the JADX Android reverse engineering tool to AI assistants. It allows you to load APK files and query their contents — decompiling classes to Java source, extracting Smali bytecode, listing exported Android components, reading the manifest, and searching methods — entirely through natural-language prompts. Security researchers and penetration testers use it to accelerate APK audits, enabling Claude or other AI agents to investigate Android application code without manual decompilation steps.
Prerequisites
- Java 11 or higher installed, with JAVA_HOME set correctly
- Maven 3.6+ for building the server JAR from source
- An MCP-compatible client such as Claude Desktop or Claude Code
- An APK file to analyze (no API keys or external accounts required)
Clone the repository
Clone the jadx-mcp-server repository to your local machine.
git clone https://github.com/Qtty/jadx-mcp-server.git
cd jadx-mcp-serverBuild the server JAR
Use the provided build script or run Maven directly. The build produces a fat JAR in the `target/` directory.
# Using the build script
chmod +x build.sh && ./build.sh
# Or manually with Maven
mvn clean packageNote the JAR path for configuration
After building, the JAR will be at `target/jadx-mcp-server-1.0.0.jar`. Copy the absolute path — you will need it in the MCP client configuration.
ls target/jadx-mcp-server-*.jarAdd the server to Claude Desktop configuration
Add the JADX server to `claude_desktop_config.json`. The server is launched via the `java` command with the stdio flag and the path to the built JAR.
{
"mcpServers": {
"jadx-analyzer": {
"command": "java",
"args": [
"-Dspring.ai.mcp.server.stdio=true",
"-jar",
"/absolute/path/to/jadx-mcp-server/target/jadx-mcp-server-1.0.0.jar"
]
}
}
}Restart Claude Desktop and verify tools
Restart Claude Desktop. Tools like `load_apk`, `get_all_classes`, and `get_class_source` should now be available. Run the test suite optionally to validate your setup.
chmod +x test.sh
./test.sh /path/to/your/app.apk suiteJaDX Examples
Client configuration
Claude Desktop configuration for the JADX MCP server using the Java stdio transport.
{
"mcpServers": {
"jadx-analyzer": {
"command": "java",
"args": [
"-Dspring.ai.mcp.server.stdio=true",
"-jar",
"/path/to/jadx-mcp-server/target/jadx-mcp-server-1.0.0.jar"
]
}
}
}Prompts to try
Example prompts for Android APK security analysis using the exposed JADX tools.
- "Load the APK at /home/user/targets/com.example.app.apk and give me an overview"
- "List all classes in the loaded APK and identify any that reference crypto or encryption"
- "Get the full source code for the MainActivity class"
- "Show me all exported components in the manifest — are any exploitable?"
- "Get the Smali bytecode for the login method in the AuthManager class"
- "Search for any methods named 'verify' or 'checkLicense' and show their source"Troubleshooting JaDX
java command not found or wrong Java version
Ensure Java 11+ is installed and JAVA_HOME points to the correct JDK. Run `java -version` to verify. On Mac, install via `brew install openjdk@17` and follow the symlink instructions homebrew provides.
Maven build fails with dependency resolution errors
Ensure Maven 3.6+ is installed (`mvn --version`) and you have internet access during the build to download dependencies from Maven Central. Behind a corporate proxy, set `MAVEN_OPTS` with your proxy settings.
load_apk tool returns an error or fails silently
Use an absolute path to the APK file. Relative paths may not resolve correctly depending on the working directory when the Java process is spawned by the MCP client. Also ensure the APK is not corrupted by verifying its size is non-zero.
Frequently Asked Questions about JaDX
What is JaDX?
JaDX is a Model Context Protocol (MCP) server that pure-java mcp server for jadx android reverse engineering tool It connects AI assistants to external tools and data sources through a standardized interface.
How do I install JaDX?
Follow the installation instructions on the JaDX GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with JaDX?
JaDX works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is JaDX free to use?
Yes, JaDX is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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