← All skills

jeffrey-traces-core

95 / 100 · Low risk

Fine to try.

By petrbouda/jeffrey (GitHub) · data · 81 stars · scanned at commit b7fcdb7

Core concepts and rules for instrumenting any JVM application with Jeffrey JFR events and Jeffrey Traces — the trace/span data model (AbstractTracedEvent, TraceSpanEvent, SpanContext), the emit rules that make events land correctly in Jeffrey's profile database, the Tracer API (run/call/inSpanOf/stamp/fork/continueIn/openSpanOf/reenter), JFR recording configuration, and verification. Read this FIRST before any technology-specific Jeffrey instrumentation skill (jeffrey-traces-spring-rest-server,…

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/'jeffrey-traces-core' ] || [ -L ~/.agents/skills/'jeffrey-traces-core' ]; then echo 'A skill folder named jeffrey-traces-core already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/petrbouda/jeffrey' "$d" && git -C "$d" checkout --quiet 'b7fcdb7b36f8f188c3d9642fd8aabc46dc882b20' -- 'utilities/jeffrey-tracing-parent/skills/jeffrey-traces-core' && mkdir -p ~/.agents/skills && cp -R "$d"/'utilities/jeffrey-tracing-parent/skills/jeffrey-traces-core' ~/.agents/skills/'jeffrey-traces-core' && 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/'jeffrey-traces-core' ~/.claude/skills/'jeffrey-traces-core' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for petrbouda/jeffrey shows the score of its lowest-scoring skill.

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/petrbouda/jeffrey.svg)](https://zalavijaysinh.github.io/skilltrust/repos/petrbouda/jeffrey/)

Score history