dotnet-add-analyzers

Add and configure .NET code analyzers to an existing project. Covers built-in Roslyn CA rules, nullable reference types enforcement, trimming/AOT compatibility analyzers, and third-party analyzer packages.

Prerequisites: Run [skill:dotnet-version-detection] first — analyzer features vary by SDK version. Run [skill:dotnet-project-analysis] to understand the current project layout.

Cross-references: [skill:dotnet-project-structure] for where build props/targets live, [skill:dotnet-scaffold-project] which includes analyzer setup in new projects, [skill:dotnet-editorconfig] for EditorConfig hierarchy/precedence, IDE* code style preferences, naming rules, and global AnalyzerConfig files.

Built-in Roslyn Analyzers

.NET SDK ships built-in analyzers controlled by AnalysisLevel. Configure in Directory.Build.props: