.NET Skills

414 skills · showing 241–300 · open in filtered browse

Validate Static Web Asset ChangeUse this skill when you are implementing a change on src\StaticWebAssetsSdk and want to test the behavior locally to validate it works as expected.dotnet/sdk3,161
Generate Release NotesGenerate release notes for a new stable release of the C# extension by gathering prerelease CHANGELOG entries and writing them in VS Code release notes style. Use this when asked to generate, draft, or write release notes.dotnet/vscode-csharp3,056
Update Roslyn VersionGuide for updating the Roslyn language server version in the vscode-csharp repository. Use this when asked to update Roslyn, bump the Roslyn version, or upgrade the language server version.dotnet/vscode-csharp3,056
Agentic WorkflowsRoute gh-aw workflow design/create/debug/upgrade requests to the right prompts.dotnet/macios2,875
Fix Random Ci Test FailureInvestigate and fix flaky/random CI test failures in dotnet/macios. Trigger on GitHub issues describing intermittent test failures, CI postmortem issues, or when asked to fix a flaky test. Analyzes test code, identifies root causes (shared state, environment dependencies, race conditions), and applies fixes.dotnet/macios2,875
Macios Binding CreatorCreate C# bindings for Apple frameworks in dotnet/macios. USE FOR: binding new APIs, implementing .todo file entries, creating Xcode SDK bindings, binding AVFoundation/UIKit/AppKit or any Apple framework, "bind this framework", "implement these APIs". DO NOT USE FOR: Xcode beta version bumps (use macios-xcode-beta-update skill), CI failure investigation (use macios-ci-failure-inspector skill).dotnet/macios2,875
Macios Ci Failure InspectorInvestigate and triage CI failures for dotnet/macios from Azure DevOps build URLs. Use this skill whenever the user shares a DevOps build link, asks about CI failures, wants to understand why a build failed, or asks to investigate test failures on any platform (iOS, tvOS, macOS, Mac Catalyst). Also use when the user says things like "CI is red", "tests are failing", "build broke", or "what happened in CI".dotnet/macios2,875
Macios Ci PostmortemPost-mortem analysis of CI failures across recent PRs in dotnet/macios. Identifies flaky tests, infrastructure issues, and shared regressions by analyzing builds from the last week. Files or updates GitHub issues for failures unrelated to any specific PR. Use when asked to "find flaky tests", "CI post-mortem", "what's been failing in CI", or "file issues for flaky failures".dotnet/macios2,875
Macios ReviewerReview dotnet/macios PRs against established rules. Trigger on "review this PR", a GitHub PR URL, or code review requests. Checks bindings, MSBuild, nullable, formatting, performance, testing, native runtime code, and Apple platform patterns.dotnet/macios2,875
Macios Xcode Beta UpdateUpdate dotnet/macios to a new Xcode beta and validate it end-to-end. Use this skill when a user asks to bump Xcode beta versions, update macios SDK/version constants, run xtro-sharpie sanitization, and run introspection tests for iOS/tvOS/macOS/Mac Catalyst.dotnet/macios2,875
Update Expected App SizeDownload updated expected app size files from Azure DevOps CI artifacts for the current branch. Use when app size tests fail in CI and the user wants to update the expected files locally. Trigger on "update app size", "download expected files", "fix app size test", or "update expected app size files".dotnet/macios2,875
Agentic WorkflowsRoute gh-aw workflow design/create/debug/upgrade requests to the right prompts.dotnet/android2,121
Android ReviewerReview dotnet/android PRs against established rules. Trigger on "review this PR", a GitHub PR URL, or code review requests. Checks MSBuild, nullable, async, security, error handling, formatting, performance, native code, JNI interop, generator codegen, and trimmer/AOT compatibility.dotnet/android2,121
Azdo Build InvestigatorInvestigate Azure DevOps (AZDO) pipeline build failures by fetching logs, downloading artifacts, and analyzing .binlog files to find the root cause of errors. Use this when users share an AZDO build URL, a GitHub PR URL, or ask about a failing pipeline, build errors, or CI failures.dotnet/android2,121
Ci StatusCheck CI build status and investigate failures for dotnet/android PRs. ALWAYS use this skill when the user asks "check CI", "CI status", "why is CI failing", "is CI green", "why is my PR blocked", or anything about build status on a PR. Auto-detects the current PR from the git branch when no PR number is given. Covers GitHub checks and the public Azure DevOps pipeline (dnceng-public). DO NOT USE FOR: GitHub Actions workflow authoring, non-dotnet/android repos.dotnet/android2,121
Read Assembly StoreRead and inspect .NET assembly stores from Android APK, AAB, or raw store files. Use this when users want to inspect, examine, or list assemblies in an APK, AAB, assembly store, or manifest file.dotnet/android2,121
Update TpnAudit and update the THIRD-PARTY-NOTICES.TXT file. Use when the user asks to "update TPNs", "audit third-party notices", "check third-party licenses", or after adding/removing a dependency. Scans submodules, vendored code, NuGet packages, and native libraries to ensure the TPN file is complete and accurate.dotnet/android2,121
Generate EF DocumentationCreate documentation PRs in the EF documentation site when new features are implemented in EF Core.dotnet/EntityFramework.Docs1,734
Bundle Dependency PrsFix broken dependency update PRs and aggregate the ones that work into one PR.dotnet/Nerdbank.GitVersioning1,571
Update Library TemplateMerges the latest Library.Template into this repo (at position of HEAD) and resolves conflicts.dotnet/Nerdbank.GitVersioning1,571
Release NotesGenerate release notes for the dotnet/diagnostics repository. Use when asked to generate release notes, a release summary, or a changelog.dotnet/diagnostics1,319
Assessing Breaking ChangesGuides assessment of backward compatibility for MSBuild changes. Consult when modifying behavior, adding warnings or errors, changing defaults, altering target ordering, removing or deprecating features, deciding whether a change needs a ChangeWave, reviewing blast radius of behavioral changes, or when a PR introduces user-visible output differences.dotnet/dotnet1,172
Authoring Errors And WarningsGuides authoring of MSBuild errors, warnings, and diagnostic messages. Consult when adding new MSBxxxx codes, writing or modifying user-facing diagnostic text, deciding between error/warning/message severity, working with Strings.resx resource files, formatting paths in error output, or evaluating whether a new warning could break WarnAsError builds.dotnet/dotnet1,172
Binlog AnalysisTriage a build / compile / restore / WarnAsError failure from its MSBuild binary log. Fetches the binlog (a local build's, or a failed dotnet/fsharp Azure DevOps PR build's published artifact) and analyzes it live via the `binlog-mcp` MCP server — structured errors, root-cause diagnosis, and an MSBuild perf X-ray. NOT for test failures or CheckCodeFormatting: a build binlog has no errors there.dotnet/dotnet1,172
Change TrackingImplementation details for EF Core change tracking. Use when changing InternalEntityEntry, ChangeDetector, SnapshotFactoryFactory, or related entity state, snapshot, or property accessor code.dotnet/dotnet1,172
ChangewavesManage MSBuild Change Waves: create new waves, condition features behind opt-out flags, write tests for wave-gated features, document change waves in ChangeWaves.md, and retire expired waves. Use when adding changes that need an opt-out or rotating out old change waves. Changes that introduce a user-visible behavior change should consider whether to use a changewave.dotnet/dotnet1,172
Cosmos ProviderImplementation details for the EF Core Azure Cosmos DB provider. Use when changing Cosmos-specific code.dotnet/dotnet1,172
Create PrCreate a pull request using the NuGet.Client PR template. Use when asked to: create PR, open PR, push and create PR, submit PR, open pull request, send changes for review.dotnet/dotnet1,172
Creating SkillsCreate custom agent capabilities when discovering novel tools, receiving task-agnostic tips from reviewers, or after researching specialized workflows not covered in existing instructions. Teaches structure, YAML optimization for LLM discoverability, and token efficiency.dotnet/dotnet1,172
Cswin32 ComGuides struct-based COM interop in MSBuild using CsWin32 patterns. Consult when working with ComScope<T>, ComClassFactory, IComIID, IID.Get<T>(), delegate* unmanaged vtables, CoCreateInstance, or manually defining COM interfaces not in Win32 metadata (e.g. WMI IWbemLocator, IWbemServices).dotnet/dotnet1,172
Cswin32 InteropGuides CsWin32 P/Invoke interop in MSBuild. Consult when working with the PInvoke class, Windows.Win32 namespaces, FEATURE_WINDOWSINTEROP, HANDLE/HMODULE/HRESULT types, BufferScope<T>, replacing [DllImport] with CsWin32, or conditioning Windows-only code for source builds.dotnet/dotnet1,172
Deploy Msbuild To VsDeploy locally-built MSBuild binaries into a Visual Studio installation for testing and debugging. Use when you need VS itself to use your local MSBuild changes, or when debugging MSBuild as invoked by VS.dotnet/dotnet1,172
Dotnet Aot CompatMake .NET projects compatible with Native AOT and trimming by systematically resolving IL trim/AOT analyzer warnings. USE FOR: making projects AOT-compatible, fixing trimming warnings, resolving IL warnings (IL2026, IL2070, IL2067, IL2072, IL3050), adding DynamicallyAccessedMembers annotations, enabling IsAotCompatible. DO NOT USE FOR: publishing native AOT binaries, optimizing binary size, replacing reflection-heavy libraries with alternatives. INVOKES: no tools — pure knowledge skill.dotnet/dotnet1,172
Flaky Test DetectorDetect flaky tests by scanning recent AzDo CI builds for test failures recurring across multiple unrelated PRs. Use when investigating intermittent failures, CI instability, deciding which tests to quarantine, or checking if RunTestCasesInSequence no-ops are causing parallel-safety issues.dotnet/dotnet1,172
Fsharp DiagnosticsAlways invoke after editing `.fs` files under `src/Compiler/`. Fast parse/typecheck without `dotnet build`, plus symbol references and inferred type hints. Use whenever the user asks about F# errors, compile errors, type inference, finding usages, or renaming a symbol in the compiler tree.dotnet/dotnet1,172
Hypothesis Driven DebuggingInvestigate compiler failures, test errors, or unexpected behavior through systematic minimal reproduction, 3-hypothesis testing, and verification. Always re-run builds and tests after changes.dotnet/dotnet1,172
Ilverify FailureFix ILVerify baseline failures when IL shape changes (codegen, new types, method signatures). Use when CI fails on ILVerify job.dotnet/dotnet1,172
Integrating Sdk And MsbuildGuides work on the SDK-MSBuild integration boundary. Consult when authoring or modifying SDK targets, working on dotnet CLI to MSBuild invocation, handling project-reference protocol, coordinating cross-repo changes with dotnet/sdk, debugging property resolution or import ordering, working on restore/build/publish/pack target chains, or dealing with Directory.Build.props/targets interaction.dotnet/dotnet1,172
Maintaining Binary Log CompatibilityGuides changes to MSBuild binary log infrastructure. Consult when modifying BinaryLogger or BinaryLogReplayEventSource, adding new BuildEventArgs types, changing event serialization/deserialization, modifying ProjectImportsCollector, adjusting message importance levels, or making changes that affect .binlog content. Also applies when verifying that behavioral changes are properly reflected in binary log output.dotnet/dotnet1,172
Make Custom AgentCreate custom GitHub Copilot agents. Use when asked to create, scaffold, or configure a custom agent, declarative agent, or @-invokable chat participant for GitHub Copilot.dotnet/dotnet1,172
Make Github Actions WorkflowCreate GitHub Actions workflows for CI, automation, or PR management. Use when asked to create, scaffold, or add a GitHub Actions workflow (.yml file under .github/workflows/).dotnet/dotnet1,172
Make InstructionsCreate VS Code file-based instructions (.instructions.md files). Use when asked to create, scaffold, or add file-based instructions for Copilot. Generates .instructions.md with YAML frontmatter and background knowledge content.dotnet/dotnet1,172
Make SkillCreate new Agent Skills for GitHub Copilot. Use when asked to create, scaffold, or add a skill. Generates SKILL.md with frontmatter, directory structure, and optional resources.dotnet/dotnet1,172
Merge Dependency UpdatesReview and merge open bot PRs: dependency updates from dotnet-maestro, codeflow from dotnet/dotnet, and OneLoc localization PRs. Produces a clickable dashboard with CI status, review state, and suspicious file flags. Use when you want to triage all open bot PRs in one pass.dotnet/dotnet1,172
MigrationsImplementation details for EF Core migrations. Use when changing MigrationsSqlGenerator, model diffing, migration operations, HistoryRepository, the Migrator or related classes.dotnet/dotnet1,172
Model BuildingImplementation details for EF Core model building. Use when changing ConventionSet, ModelBuilder, IConvention implementations, ModelRuntimeInitializer, RuntimeModel, or related classes.dotnet/dotnet1,172
Multithreaded Task MigrationGuide for migrating MSBuild tasks to multithreaded mode support, including compatibility red-team review. Use this when converting tasks to thread-safe versions, implementing IMultiThreadableTask, adding TaskEnvironment support, or auditing migrations for behavioral compatibility.dotnet/dotnet1,172
Nuget Restore Repro TriageAssists with reproducing and triaging NuGet restore issues. Given a GitHub issue from NuGet/Home, analyzes the issue, extracts repro-relevant data, and writes C# tests in the NuGet.Client repo that reproduce the described scenario. Use for NuGet restore bugs, error code investigations, and test authoring tasks.dotnet/dotnet1,172
Nullable EnablementEnable C# nullable reference types on files that still have `#nullable disable` in the NuGet.Client codebase. Use this skill whenever the user asks to enable nullable, migrate nullable, remove `#nullable disable`, annotate nullability, or fix nullable warnings for any NuGet project or file. Also trigger when the user mentions a GitHub issue about nullable enablement, references PublicAPI.Shipped.txt annotation updates, or says things like "let's do nullable on X" or "enable nullable for these fidotnet/dotnet1,172
Optimizing Msbuild PerformanceGuides performance optimization for MSBuild engine code. Consult when working on hot paths in evaluation or execution, reducing allocations, choosing collection types, handling strings efficiently, modifying Expander.cs or Evaluator.cs, using Span<T>/stackalloc, caching values, or profiling build performance. Also applies when reviewing PRs for performance regression.dotnet/dotnet1,172
Pipelines Health CheckCheck health of MSBuild CI pipelines, VS repo PR insertion statuses, and VMR codeflow PRs. Use when asked about pipeline health, build failures, infrastructure issues, CI status, insertion PR status, VMR codeflow status, or for periodic health monitoring.dotnet/dotnet1,172
PostmortemWrite a postmortem for a regression that escaped to production, broke real users, and traces back to a design flaw worth documenting for future implementors. Only invoke after confirming no existing postmortem or doc covers the same root cause.dotnet/dotnet1,172
Pr Build StatusRetrieve and analyze Azure DevOps build failures for GitHub PRs. Use when CI fails. CRITICAL: Collect ALL errors from ALL platforms FIRST, write hypotheses to file, then fix systematically.dotnet/dotnet1,172
Pr DescriptionUse when drafting, proposing, creating, or editing prose for a dotnet/fsharp GitHub PR or issue — body, title, comment, review summary, edits — including bare asks like "open a PR", "ship this", "write up what I did", "summarise the change", "reply on the PR", "edit the issue body", "gh pr create", "gh pr comment", "gh pr edit --body", "gh issue comment", "gh pr review --body". Primary use case is PR descriptions; same rules apply to PR/issue comments and review summaries. Not for labels, reviewdotnet/dotnet1,172
Project ManagementGitHub issue and project-board management for the dotnet/msbuild repo. Use when asked to file/triage/update issues, post comments, amend issue bodies, move sprints, bulk-update project board fields, or audit items by sprint/status/assignee.dotnet/dotnet1,172
Query PipelineImplementation details for EF Core LINQ query translation, SQL generation, and bulk operations (ExecuteUpdate/ExecuteDelete). Use when changing expression visitors, SqlExpressions, QuerySqlGenerator, ShaperProcessingExpressionVisitor, UpdateExpression, DeleteExpression, or related classes.dotnet/dotnet1,172
Realsig CodegenDebug and fix --realsig+ (RealInternalSignature) codegen bugs in IlxGen — MethodAccessException / FieldAccessException / TypeAccessException at runtime, IL `private` vs `assembly` visibility, closure and TLR-lift placement (cloc / NestedTypeRefForCompLoc / effectiveCloc / moduleCloc). Use when a program compiles cleanly but crashes only under --realsig+, when IL accessibility differs between realsig modes, or when reasoning about where compiler-synthesized closures/state-machines/quotation helpedotnet/dotnet1,172
ReleaseOrchestrate an MSBuild release: create the tracking issue, branch, configure DARC channels and subscriptions, bump version in main, final-brand the release branch, insert into VS, and publish post-GA. Covers the full monthly release lifecycle aligned with VS shipping cadence.dotnet/dotnet1,172
Release NotesGenerate release notes for the dotnet/diagnostics repository. Use when asked to generate release notes, a release summary, or a changelog.dotnet/dotnet1,172
Release NotesWrite release notes for completed changes. Use when PR modifies tracked paths and needs release notes entry.dotnet/dotnet1,172