Symptom-first runtime diagnostics for JVM applications using JDK tools: jcmd, jstack, jmap, jstat, JFR, GC logs, async-profiler, Native Memory Tracking, and Eclipse MAT. Use when a Java app has high CPU, memory leaks or OutOfMemoryError, slow startup, deadlocks or thread starvation, long GC pauses, native memory growth, or slow requests. Includes permission tiers for safe use.
Install
npx skills add github/awesome-copilot --skill java-diagnosticsnpx skills add github/awesome-copilot --skill java-diagnostics -a claude-code -gnpx skills add github/awesome-copilot --skill java-diagnostics -a codex -ggemini skills install https://github.com/github/awesome-copilot.git --path skills/java-diagnosticsgh skill install github/awesome-copilot java-diagnosticsgit clone --depth 1 https://github.com/github/awesome-copilot /tmp/github__awesome-copilot
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/github__awesome-copilot/skills/java-diagnostics ~/.claude/skills/java-diagnostics # Claude Code
cp -R /tmp/github__awesome-copilot/skills/java-diagnostics ~/.agents/skills/java-diagnostics # Codex, Cursor, Gemini CLI, Copilot, OpenCode