agent-builder
Build a specialist AI agent from an approved plan. Produces a ready-to-deploy agent file (marketplace skill, system prompt, project instruction, or custom GPT) from a plan created by agent-planner. Use when the user wants to generate or build an agent from a plan, even if they don't explicitly say "skill" or "SKILL.md". Invoked via "/agent-builder plans/<name>.md" or naturally via phrases like "build the agent", "generate the agent file", "turn the plan into an agent", "write the skill from the plan".