Recaf

概要

Recaf is a plugin designed to integrate Recaf 4.x, a powerful Java bytecode analysis and editing application, with AI assistants via the Model Context Protocol (MCP). It employs a dual-process architecture: a Recaf plugin acts as an HTTP bridge server, exposing Recaf's services, while a standalone MCP server communicates with AI clients using STDIO JSON-RPC. This setup allows AI workflows to seamlessly perform complex bytecode operations such as decompilation, search, analysis, editing, compilation, and assembly, enabling advanced automation for tasks typically requiring manual interaction with a decompiler.

主な機能

• Extensive bytecode analysis capabilities including decompilation, searching, call graphs, and inheritance hierarchies
• Comprehensive workspace management to open, close, list, and switch between multiple JARs or workspaces
• Direct bytecode modification and editing for renaming symbols, adding/removing methods/fields, and applying patches
• Integrated Java compilation and JASM assembly/disassembly functionality
• Flexible export options for modified JARs, decompiled source code, and rename mappings
• 2 GitHub stars

ユースケース

• Reverse engineering and deobfuscating JAR files to understand application logic
• Comparing different versions of JARs or classes for changes and updates
• Editing and patching bytecode to modify application behavior or fix issues