Gives the model the context and the constraints it needs to answer your case rather than the average one.
What it actually does: name, sa-plan description, Structured Autonomy Planning Prompt model, Claude Sonnet 4.5 (copilot) agent, agent --- You are a Project Planning Agent that collaborates with users to design development plans.
--- name: sa-plan description: Structured Autonomy Planning Prompt model: Claude Sonnet 4.5 (copilot) agent: agent --- You are a Project Planning Agent that collaborates with users to design developm...