Jebmcp
MCP server for jebmcp
What is Jebmcp?
Jebmcp is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp server for jebmcp
MCP server for jebmcp
This server falls under the Security category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- MCP server for jebmcp
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx jebmcpConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Jebmcp
jebmcp is a Python MCP server and JEB Pro plugin that exposes JEB decompiler capabilities to AI coding assistants such as Cline, Cursor, and RooCode. It starts an HTTP server inside a running JEB Pro session and lets AI tools call functions to decompile classes, retrieve methods, inspect exported Android activities, follow call graphs, and rename identifiers — enabling AI-assisted reverse engineering of APK binaries without manually copying decompiled code. Security researchers and mobile app analysts use it to automate the repetitive parts of APK analysis and vulnerability discovery.
Prerequisites
- JEB Pro installed (a commercial Android reverse engineering tool from PNFSoft)
- Python 3.11 or higher
- uv package manager (https://docs.astral.sh/uv/getting-started/installation/)
- An MCP-capable AI coding client: Cline, Cursor, or RooCode (VS Code extension)
- The APK or binary you want to analyze opened in JEB Pro
Clone the repository
Clone the jebmcp repository which contains both the JEB Python script (MCP.py) and the Python MCP server.
git clone https://github.com/flankerhqd/jebmcp.git
cd jebmcpCopy the JEB plugin script into JEB's scripts directory
Copy src/jeb_mcp/MCP.py into your JEB installation's scripts directory. The Jython file must also be present in that directory.
cp src/jeb_mcp/MCP.py $JEB_INSTALLATION_DIR/scripts/Start the plugin in JEB Pro
In JEB Pro, open File > Scripts > Scripts Selector, locate MCP.py in the list, and run it. The JEB logger window should show that the MCP server started on port 16161.
Verify the server is running
After starting the script you should see these three lines in the JEB logger output confirming the server is ready.
[MCP] Plugin loaded
[MCP] Plugin running
[MCP] Server started at http://127.0.0.1:16161Configure your MCP client (RooCode example)
Open the RooCode MCP settings in VS Code (click the RooCode icon > ... > Edit Project MCP), which creates .roo/mcp.json. Add the server configuration pointing to server.py via uv.
{
"mcpServers": {
"jeb": {
"command": "uv",
"args": ["--directory", "jeb-mcp/src/jeb_mcp", "run", "server.py"],
"timeout": 1800
}
}
}Connect and begin analysis
Ask your AI assistant to connect to JEB MCP and start analyzing the APK open in JEB Pro. The assistant can then call tools to decompile classes, trace call graphs, and rename identifiers.
Jebmcp Examples
RooCode MCP configuration with full auto-approve list
Complete .roo/mcp.json configuration including the full autoApprove list for uninterrupted analysis sessions.
{
"mcpServers": {
"jeb": {
"command": "uv",
"args": ["--directory", "jeb-mcp/src/jeb_mcp", "run", "server.py"],
"timeout": 1800,
"disabled": false,
"autoApprove": [
"ping",
"check_connection",
"get_manifest",
"get_class_decompiled_code",
"get_method_decompiled_code",
"get_method_callers",
"get_method_overrides",
"get_superclass",
"get_interfaces",
"get_class_methods",
"get_class_fields",
"rename_class_name",
"rename_method_name",
"rename_field_name"
]
}
}
}Prompts to try
Example analysis prompts modeled on the demo workflow shown in the README.
- "Connect to JEB MCP and retrieve the AndroidManifest.xml"
- "Decompile Lnet/example/MainActivity; and explain what it does"
- "List all exported activities in this APK"
- "Get all callers of the method Lnet/example/Utils;->encrypt and trace the data flow"
- "Rename all methods with names shorter than 3 characters in Lnet/example/Crypto; to descriptive names based on their logic"Troubleshooting Jebmcp
MCP server does not start — no output in JEB logger after running MCP.py
Ensure the MCP.py file is in JEB's scripts directory AND that the Jython runtime file is also present in the same directory. Restart JEB Pro after copying the files, then try running the script again from File > Scripts > Scripts Selector.
uv run server.py fails with module not found errors
Run 'uv sync' inside the jeb-mcp directory to install the Python dependencies defined in pyproject.toml before starting the server. Ensure Python 3.11+ is available on your PATH.
AI assistant connects but get_class_decompiled_code returns empty results
The server connects to JEB via localhost:16161. Ensure JEB Pro is still running with the MCP.py script active (it stops if you close the script). Also verify the class name uses JVM descriptor format: Lpackage/name/ClassName; including the trailing semicolon.
Frequently Asked Questions about Jebmcp
What is Jebmcp?
Jebmcp is a Model Context Protocol (MCP) server that mcp server for jebmcp It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Jebmcp?
Follow the installation instructions on the Jebmcp GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Jebmcp?
Jebmcp works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Jebmcp free to use?
Yes, Jebmcp is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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Set Up Jebmcp in Your Editor
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Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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