Debug live Java Virtual Machines with deep introspection and REPL capabilities through an MCP server.
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Descartes MCP serves as a powerful server for Java, enabling deep introspection and Read-Eval-Print Loop (REPL) functionality right out of the box. It offers two distinct operating modes: a proxy mode for external debugging of JDWP-enabled JVMs without needing to restart applications, and an embedded mode for comprehensive in-process runtime tooling including JShell, profiling, and hot reload. This tool empowers developers to investigate blocked execution paths, share repeatable debugging workflows with AI-assisted agents like Claude Code and Codex, and seamlessly transition between external debugging and full runtime introspection as needed, enhancing the efficiency and depth of live JVM diagnostics.
主な機能
01Proxy mode for external JDWP debugging of JVMs
02Embedded mode for in-process runtime tooling (JShell, profiler, hot reload)
03Deep introspection and REPL out of the box
04Debugger thread and stack trace tools for investigating execution paths
05Integration with AI-assisted debugging agents like Claude Code and Codex
067 GitHub stars
ユースケース
01Debugging JDWP-enabled JVMs without restarting application code
02Investigating blocked and waiting execution paths with debugger tools
03Sharing repeatable debugging workflows with AI-assisted agent tooling
