Use Performance Studio when an agent needs structured SQL Server execution-plan analysis as part of a repeatable diagnostics workflow, especially for parsing .sqlplan files, surfacing warnings, inspecting expensive operators, and generating evidence-backed tuning guidance. Invoke it instead of using the desktop GUI alone when the real job is agent-assisted plan review through its built-in MCP server or CLI, not manual point-and-click inspection. The scope boundary is clear and skill-shaped: this is specifically about execution-plan analysis and explanation for SQL Server performance troubleshooting, not a generic database platform listing, SQL IDE card, or broad database administration product page.