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performance-tuning

80 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By openJiuwen-ai/agent-core-java (GitHub) · coding · 49 stars · scanned at commit 1ffbfb8

Java performance tuning guide (JDK 17 baseline). Proactively apply when users are doing performance optimization, writing high-performance code, selecting JVM parameters, tuning GC collectors, running JMH benchmarks, using Profiling tools, optimizing collections/Stream/locks/reflection, tuning JIT/inlining, or optimizing AI agent frameworks (LLM calls, JSON serialization, reflection-based dynamic invocation, prompt concatenation). Covers: JVM parameter tuning (heap/stack/GC collector selection)…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'performance-tuning' ] || [ -L ~/.agents/skills/'performance-tuning' ]; then echo 'A skill folder named performance-tuning already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/openJiuwen-ai/agent-core-java' "$d" && git -C "$d" checkout --quiet '1ffbfb81aa6f8a346cdff111cf5484c1bdb3959f' -- '.claude/skills/performance-tuning' && mkdir -p ~/.agents/skills && cp -R "$d"/'.claude/skills/performance-tuning' ~/.agents/skills/'performance-tuning' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'performance-tuning' ~/.claude/skills/'performance-tuning' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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