Design a goal-oriented agent loop or review one for failure modes: spinning, Goodhart-gaming the verifier, or running a wrong answer to completion. Covers machine-decidable goals, loop types, plan/build/judge skeletons, and runaway prevention; mechanism wiring lives in autonomous-loops. Use when designing, writing, or checking an agent loop.
Install
npx skills add affaan-m/ECC --skill loop-design-checknpx skills add affaan-m/ECC --skill loop-design-check -a claude-code -gnpx skills add affaan-m/ECC --skill loop-design-check -a codex -ggemini skills install https://github.com/affaan-m/ECC.git --path skills/loop-design-checkgh skill install affaan-m/ECC loop-design-checkgit clone --depth 1 https://github.com/affaan-m/ECC /tmp/affaan-m__ECC
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/affaan-m__ECC/skills/loop-design-check ~/.claude/skills/loop-design-check # Claude Code
cp -R /tmp/affaan-m__ECC/skills/loop-design-check ~/.agents/skills/loop-design-check # Codex, Cursor, Gemini CLI, Copilot, OpenCode