What problem does it solve? Slow .NET builds are hard to debug without visibility into where time is spent. This Skill analyzes MSBuild binary logs to pinpoint the exact targets, tasks, and processes consuming build time, turning vague "builds are slow" complaints into actionable findings. ## Core Features & Use Cases - Binlog Performance Analysis: Generate and replay binary logs with performance summaries to identify expensive targets and tasks, using the binlog MCP server or text-log replay as a fallback. - Seven Bottleneck Categories: Detects RAR slowness (>5s), Roslyn analyzer overhead (>30% of Csc time), serialization bottlenecks, excessive Copy tasks, evaluation overhead, redundant NuGet restores, and poor project graph shape. - Impact-Prioritized Reporting: Categorizes findings as high impact (>10% of build time), medium impact (2-10%), or quick wins (property flag changes). - Use Case: A team's solution build takes 8 minutes. Use this Skill to replay the binlog, discover that ResolveAssemblyReference takes 20s per project due to excessive transitive references, and apply targeted MSBuild property fixes. ## Quick Start Analyze my build.binlog file and tell me which targets and tasks are making my .NET build slow.