jfr-sql

92 / 100 · Low risk

Fine to try. Some of what it can do is expected: a data skill usually connects to databases or online services with your credentials.

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

Load before the first jfr_executeQuery or jfr_queryEvents call, whichever skill is driving the analysis: the schema of a Jeffrey profile's JFR database (events, event_types, threads, stacktraces, frames), the field names per event type, and the traps that return a wrong answer without an error — events_raw's truncated fields, ->> binding tighter than casts, root-first stacks, the row cap. Use for what no flamegraph, trace, heap or jvm dashboard tool answers: how many distinct values a field tak…

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. It runs automatically when the plugin is installed.

Found in 1 place.

jeffrey-agent-plugin/hooks/hooks.json, line 8"command": "sh -c 'root=\"$CLAUDE_PLUGIN_ROOT\"; [ -n \"$root\" ] || root=\"${extensionPath}\"; script=\"$root/hooks/jeffrey-status.sh\"; [ -x \"$script\" ] ||

Connects to the internet

The author does not mention this. It runs automatically when the plugin is installed. Expected for a data skill.

Found in 1 place.

jeffrey-agent-plugin/hooks/jeffrey-status.sh, line 118status=$(curl "$@" 2>/dev/null)

Install

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

if [ -e ~/.agents/skills/'jfr-sql' ] || [ -L ~/.agents/skills/'jfr-sql' ]; then echo 'A skill folder named jfr-sql 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 "$d" checkout --quiet 'b7fcdb7b36f8f188c3d9642fd8aabc46dc882b20' -- 'jeffrey-agent-plugin/skills/jfr-sql' && mkdir -p ~/.agents/skills && cp -R "$d"/'jeffrey-agent-plugin/skills/jfr-sql' ~/.agents/skills/'jfr-sql' && 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/'jfr-sql' ~/.claude/skills/'jfr-sql' (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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Score history

Date	Version	Score
2026-11-13	`b7fcdb7`	92
2026-11-07	`ec4a6fc`	92