Check before calling a tool - is it needed at all, is it the right one, how large is the output, what is the risk class. Use before Bash with destructive potential, before bulk edits, before database queries, and whenever a tool's output could turn out to be enormous.
Install
npx skills add sergvss/agents-best-teams --skill tool-checklistnpx skills add sergvss/agents-best-teams --skill tool-checklist -a claude-code -gnpx skills add sergvss/agents-best-teams --skill tool-checklist -a codex -ggemini skills install https://github.com/sergvss/agents-best-teams.git --path skills/tool-checklistgh skill install sergvss/agents-best-teams tool-checklistgit clone --depth 1 https://github.com/sergvss/agents-best-teams /tmp/sergvss__agents-best-teams
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/sergvss__agents-best-teams/skills/tool-checklist ~/.claude/skills/tool-checklist # Claude Code
cp -R /tmp/sergvss__agents-best-teams/skills/tool-checklist ~/.agents/skills/tool-checklist # Codex, Cursor, Gemini CLI, Copilot, OpenCode