If you're working with Java dependencies or investigating third-party JARs, this server gives Claude nine tools to navigate and reverse-engineer them. The discovery tools browse packages and resources, hunting tools search for classes and string literals in bytecode, and analysis tools extract metadata via ASM or decompile classes using CFR, Vineflower, or Procyon. It's particularly handy when you need to understand how a library works internally, track down where a specific error message originates, or verify what's actually bundled in a JAR. The server itself is Java-based but ships as an npm package that downloads and caches the JAR on first run, so setup is just npx with Node 18+ and Java 17+.
claude mcp add --transport stdio io.github.huynhkhanh1402-dejared uvx dejared