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cron-doctor

95 / 100 · Low risk

Fine to try.

By boisenoise/skills-collections (GitHub) · other · 12 stars · scanned at commit 419c39f

Diagnose and validate cron expressions before they ship. Catches the five silent death-traps: impossible dates that never fire, OR-semantics that fire too often, midnight spikes, uneven step drift, and leap-year February 29.

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/'cron-doctor' ] || [ -L ~/.agents/skills/'cron-doctor' ]; then echo 'A skill folder named cron-doctor already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/boisenoise/skills-collections' "$d" && git -C "$d" checkout --quiet '419c39fde874b8baecbb36a397b967e0190a2ece' -- 'skills/antigravity-cron-doctor' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/antigravity-cron-doctor' ~/.agents/skills/'cron-doctor' && 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/'cron-doctor' ~/.claude/skills/'cron-doctor' (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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