JADX-MCP-SERVER

JADX-MCP-SERVER (Part of Zin's Reverse Engineering MCP Suite)

⚡ Fully automated MCP server built to communicate with JADX-AI-MCP Plugin to analyze Android APKs using LLMs like Claude — uncover vulnerabilities, parse manifests, and reverse engineer effortlessly.

Download now: https://github.com/zinja-coder/jadx-ai-mcp/releases

🤖 What is JADX-MCP-SERVER?

JADX MCP Server is a standalone Python server that interacts with a modified version of jadx-gui (see: jadx-ai-mcp) via MCP (Model Context Protocol). It lets LLMs communicate with the decompiled Android app context live.

🤖 What is JADX-AI-MCP?

JADX-AI-MCP is a plugin for the JADX decompiler that integrates directly with Model Context Protocol (MCP) to provide live reverse engineering support with LLMs like Claude.

Think: "Decompile → Context-Aware Code Review → AI Recommendations" — all in real time.

Watch the demo!

https://github.com/user-attachments/assets/b65c3041-fde3-4803-8d99-45ca77dbe30a

https://github.com/user-attachments/assets/c184afae-3713-4bc0-a1d0-546c1f4eb57f

https://github.com/user-attachments/assets/6342ea0f-fa8f-44e6-9b3a-4ceb8919a5b0

It is combination of two tools:

JADX-AI-MCP
JADX MCP SERVER

Zin MCP Suie

Current MCP Tools

The following MCP tools are available:

fetch_current_class() — Get the class name and full source of selected class
get_selected_text() — Get currently selected text
get_all_classes() — List all classes in the project
get_class_source() — Get full source of a given class
get_method_by_name() — Fetch a method’s source
search_method_by_name() — Search method across classes
get_methods_of_class() — List methods in a class
get_fields_of_class() — List fields in a class
get_smali_of_class() — Fetch smali of class
get_main_activity_class() — Fetch main activity from jadx mentioned in AndroidManifest.xml file.
get_main_application_classes_code() — Fetch all the main application classes' code based on the package name defined in the AndroidManifest.xml.
get_main_application_classes_names() — Fetch all the main application classes' names based on the package name defined in the AndroidManifest.xml.
get_android_manifest() — Retrieve and return the AndroidManifest.xml content.
get_strings() : Fetches the strings.xml file
get_all_resource_file_names() : Retrieve all resource files names that exists in application
get_resource_file() : Retrieve resource file content

Note: Tested on Claude Desktop. Support for other LLMs might be tested in future.

🗒️ Sample Prompts

🔍 Basic Code Understanding

"Explain what this class does in one paragraph."

"Summarize the responsibilities of this method."

"Is there any obfuscation in this class?"

"List all Android permissions this class might require."

🛡️ Vulnerability Detection

"Are there any insecure API usages in this method?"

"Check this class for hardcoded secrets or credentials."

"Does this method sanitize user input before using it?"

"What security vulnerabilities might be introduced by this code?"

🛠️ Reverse Engineering Helpers

"Deobfuscate and rename the classes and methods to something readable."

"Can you infer the original purpose of this smali method?"

"What libraries or SDKs does this class appear to be part of?"

📦 Static Analysis

"List all network-related API calls in this class."

"Identify file I/O operations and their potential risks."

"Does this method leak device info or PII?"

🤖 AI Code Modification

"Refactor this method to improve readability."

"Add comments to this code explaining each step."

"Rewrite this Java method in Python for analysis."

📄 Documentation & Metadata

"Generate Javadoc-style comments for all methods."

"What package or app component does this class likely belong to?"

"Can you identify the Android component type (Activity, Service, etc.)?"

🛠️ Getting Started

READ HERE

Running on Local LLM Using Ollama and Zin MCP Client - Recommended

⚡ Lightweight, Fast, Simple, CLI-Based MCP Client for STDIO MCP Servers, to fill the gap and provide bridge between your local LLMs running Ollama and MCP Servers.

Check Now: https://github.com/zinja-coder/zin-mcp-client

Demo: Perform Code Review to Find Vulnerabilities locally

https://github.com/user-attachments/assets/4cd26715-b5e6-4b4b-95e4-054de6789f42

🛣️ Future Roadmap

Add Support for apktool
Add support for hermes code (ReactNative Application)
Add more useful MCP Tools
Make LLM be able to modify code on JADX
Add prompts templates, give llm access to Android APK Files as Resources
Build MCP Client to support Local LLM
END-GOAL : Make all android reverse engineering and APK modification tools Connect with single MCP server to make reverse engineering apk files as easy as possible purely from vibes.

NOTE For Contributors

The files related to JADX-AI-MCP can be found here
The files related to jadx-mcp-server can be found in this repository only.

🙏 Credits

This project is a plugin for JADX, an amazing open-source Android decompiler created and maintained by @skylot. All core decompilation logic belongs to them. I have only extended it to support my MCP server with AI capabilities.

📎 Original README (JADX)

The original README.md from jadx is included here in this repository for reference and credit.

This MCP server is made possible by the extensibility of JADX-GUI and the amazing Android reverse engineering community.

Also huge thanks to @aaddrick for developing Claude desktop for Debian based linux.

And in last thanks to @anthropics for developing the Model Context Protocol and @FastMCP team

And all opensource maintainers and contributors that makes libraries and dependencies which allows project like this possible.

Audited and Received Assessment Badge

Thank you Mseep.net for auditing and providing Assessment Badge.

📄 License

This plugin inherits the Apache 2.0 License from the original JADX repository.

⚖️ Legal Warning

Disclaimer

The tools jadx-ai-mcp and jadx_mcp_server are intended strictly for educational, research, and ethical security assessment purposes. They are provided "as-is" without any warranties, expressed or implied. Users are solely responsible for ensuring that their use of these tools complies with all applicable laws, regulations, and ethical guidelines.

By using jadx-ai-mcp or jadx_mcp_server, you agree to use them only in environments you are authorized to test, such as applications you own or have explicit permission to analyze. Any misuse of these tools for unauthorized reverse engineering, infringement of intellectual property rights, or malicious activity is strictly prohibited.

The developers of jadx-ai-mcp and jadx_mcp_server shall not be held liable for any damage, data loss, legal consequences, or other consequences resulting from the use or misuse of these tools. Users assume full responsibility for their actions and any impact caused by their usage.

Use responsibly. Respect intellectual property. Follow ethical hacking practices.

🙌 Contribute or Support

Found it useful? Give it a ⭐️
Got ideas? Open an issue or submit a PR
Built something on top? DM me or mention me — I’ll add it to the README!

Built with ❤️ for the reverse engineering and AI communities.

JADX-MCP-SERVER

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