Deep read-only reconnaissance before a change is designed. Fans out parallel investigators when a question spans several subsystems, compares options, needs cross-file tracing, or changes what a shared value means, then synthesizes one picture and, in an autonomous run, writes a durable brief.
Install
npx skills add renzrollon/shippable-skills --skill explore-shippable-skillsnpx skills add renzrollon/shippable-skills --skill explore-shippable-skills -a claude-code -gnpx skills add renzrollon/shippable-skills --skill explore-shippable-skills -a codex -ggemini skills install https://github.com/renzrollon/shippable-skills.git --path skills/engineering/exploregh skill install renzrollon/shippable-skills explore-shippable-skillsgit clone --depth 1 https://github.com/renzrollon/shippable-skills /tmp/renzrollon__shippable-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/renzrollon__shippable-skills/skills/engineering/explore ~/.claude/skills/explore-shippable-skills # Claude Code
cp -R /tmp/renzrollon__shippable-skills/skills/engineering/explore ~/.agents/skills/explore-shippable-skills # Codex, Cursor, Gemini CLI, Copilot, OpenCode