Step-by-step SKILL.md packages an AI follows for a single kind of task.
A skill is a focused playbook - instructions, examples and constraints - that makes any model reliable at one job, from SQL reporting to changelog writing. The router fills a plan's skill slot with the best match for the request.
Deep feature planning for human+AI teams. Explores codebase, asks hard questions, designs architecture, challenges against values. Use when starting any non-trivial feature — when you need to understa