.NET Skills

561 skills · showing 61–120 · open in filtered browse

Update Agent DocsAssess whether task-relevant agent documentation needs changes in the Roslyn repo. Run at the end of every task that modifies code, adds files, changes public APIs or diagnostics, or establishes new patterns. Keeps .github/memory/ fresh and reliable.dotnet/roslyn20,707
Validate SdkInstall and validate a .NET SDK from an Azure DevOps internal build. Use this when asked to install, validate, or set up a .NET SDK from a dnceng/internal Azure DevOps build link or build ID.dotnet/roslyn20,707
Vmr Codeflow StatusAnalyze VMR codeflow PR status for dotnet repositories. Use when investigating stale codeflow PRs, checking if fixes have flowed through the VMR pipeline, debugging dependency update issues in PRs authored by dotnet-maestro[bot], checking overall flow status for a repo, or diagnosing why backflow PRs are missing or blocked.dotnet/roslyn20,707
Add New Jit Ee ApiAdd a new API to the JIT-VM (aka JIT-EE) interface in the codebase.dotnet/runtime18,303
Api ProposalCreate prototype-backed API proposals for dotnet/runtime. Use when asked to draft an API proposal, write an api-suggestion issue, refine a vague API idea into a complete proposal, or improve a proposal marked api-needs-work. Covers the full pipeline from research through prototyping, ref source generation, and publishing. DO NOT USE FOR bug fixes, code review, performance benchmarking, or internal API changes that don't affect public surface area.dotnet/runtime18,303
Aspnet BenchmarkRun the TechEmpower ASP.NET Core benchmarks against a locally-built dotnet/runtime, either locally with an SDK overlay or on external infrastructure using Crank, to validate the end-to-end impact of a runtime change (e.g. sockets, io_uring, GC, JIT) under realistic HTTP load. Use this when asked to benchmark, load-test, or profile an ASP.NET Core / Kestrel scenario, or to compare an env-var-gated feature (e.g. `DOTNET_USE_IO_URING`) end-to-end.dotnet/runtime18,303
Breaking Change DocGenerate breaking change documentation for merged dotnet/runtime PRs. USE FOR: creating breaking change docs, "document this breaking change", "write breaking change issue for PR #NNNNN", processing PRs labeled needs-breaking-change-doc-created. DO NOT USE FOR: general code review (use code-review skill), bug fixes, API proposals (use api-proposal skill).dotnet/runtime18,303
Build And TestBuild and test dotnet/runtime locally. Covers the mandatory baseline build, per-component build and test commands, Windows/PowerShell equivalents, running individual tests, and troubleshooting. USE FOR: any build or test invocation in this repo, and before making code changes under CCA. DO NOT USE FOR: CI pipeline triage (use ci-pipeline-monitor) or benchmarking (use microbenchmark for method/API-level measurements or aspnet-benchmark for end-to-end ASP.NET Core/HTTP load testing).dotnet/runtime18,303
Ci Pipeline MonitorMonitors .NET runtime CI test pipelines on Azure DevOps. Use this skill when asked to monitor CI pipeline test results, triage CI test failures across ADO pipelines, or generate CI test monitoring reports.dotnet/runtime18,303
Code ReviewReview code changes in dotnet/runtime for correctness, performance, and consistency with project conventions. Use when reviewing PRs or code changes.dotnet/runtime18,303
Create KbeCreate or update a Known Build Error issue in dotnet/runtime from a concrete CI failure. Use when a failure is actionable, a Build Analysis result is not yet known, or a workflow needs a repo-specific KBE issue for an outer-loop or PR-targeted failure.dotnet/runtime18,303
Extensions ReviewGuidance for writing and modifying Microsoft.Extensions.* and System.IO.Compression code in dotnet/runtime. Covers DI lifetime management, configuration binding, options validation, logging provider patterns, caching semantics, compression format compliance, and host lifecycle. For full code review, delegates to the @extensions-reviewer agent. Trigger words: Microsoft.Extensions, IServiceCollection, IConfiguration, ILogger, IHost, IMemoryCache, IOptions, ZipArchive, HttpClientFactory, IFileProvidotnet/runtime18,303
Fuzzlyn TriageTriage Fuzzlyn CI runs.dotnet/runtime18,303
Issue TriageTriage a dotnet/runtime GitHub issue with duplicate search, label check, reproduction, and ecosystem research, then recommend KEEP/CLOSE/NEEDS INFO. Use when asked to triage, evaluate, assess, or check a specific GitHub issue. Also use when asked "is this a duplicate", "should we close this", "check this issue", "what do you think about this issue", or when given a dotnet/runtime issue URL or number and asked for an opinion. Handles bug reports, API proposals, enhancements, performance regressiodotnet/runtime18,303
Jit Regression TestExtract a standalone JIT regression test case from a given GitHub issue and save it under a JIT regression runner folder. USE FOR: creating JIT regression tests, extracting repro code from dotnet/runtime issues, "write a test for this JIT bug", "create a regression test for issue #NNNNN", converting issue repro to xunit test. DO NOT USE FOR: non-JIT tests (use standard test patterns), debugging JIT issues without a known repro, performance benchmarks (use microbenchmark skill).dotnet/runtime18,303
MicrobenchmarkGenerate and run ad hoc BenchmarkDotNet microbenchmarks to validate the performance impact of a code change. Use this when asked to benchmark, profile, or validate the performance impact of a code change in dotnet/runtime at the method/API level. For end-to-end ASP.NET Core / HTTP server load testing, use the aspnet-benchmark skill instead.dotnet/runtime18,303
Mobile PlatformsDomain knowledge for triaging and fixing .NET failures on Apple mobile (iOS, tvOS, MacCatalyst) and Android. Use when runtime-extra-platforms or mobile CI is failing, when investigating iOS, tvOS, MacCatalyst, iossimulator, tvossimulator, or Android build/test failures, or when a change touches mobile pipeline YAML, AppleAppBuilder/AndroidAppBuilder, code signing, provisioning, simulator/emulator startup, platform conditionals, or NativeAOT-on-mobile behavior. Covers failure triage (infrastructudotnet/runtime18,303
Pr Failure ScanAnalyze a dotnet/runtime PR's CI failures, skip failures already known to Build Analysis, find matching Known Build Errors, and create or draft new KBEs for the remaining failures. Supports dry-run output to local markdown files instead of creating GitHub issues.dotnet/runtime18,303
Standalone Test ReproGenerate a standalone console application under artifacts/tmp from a managed test under src/tests so it can be run directly with corerun. USE FOR: "create a standalone repro for this runtime test", converting a CoreCLR test wrapper path such as JIT/.../TestName.cmd into a console app, or extracting a fully qualified xUnit test method from a merged test assembly, including when a CI scenario such as jitstress1 is specified. DO NOT USE FOR: adding a regression test to src/tests, library tests undedotnet/runtime18,303
Standalone Test Repro CmdResolve a CoreCLR runtime test from a generated .cmd or .sh wrapper path for the standalone-test-repro workflow. Use when the requested test is identified by a CI or Helix wrapper path, with or without a named test scenario. Continue with the parent standalone-test-repro skill after resolution.dotnet/runtime18,303
Standalone Test Repro MethodResolve a CoreCLR runtime test from a fully qualified method name for the standalone-test-repro workflow. Use for xUnit display names and methods in merged or multi-test assemblies, with or without a named test scenario. Continue with the parent standalone-test-repro skill after resolution.dotnet/runtime18,303
System Net ReviewGuidance for writing and modifying System.Net networking code in dotnet/runtime. Covers resource lifecycle, connection pooling, cross-platform interop, protocol compliance, async patterns, and security posture. For full code review, delegates to the @system-net-review agent. Trigger words: system.net, networking, http client, sockets, ssl, tls, quic, http2, http3, socketshttphandler, sslstream, connection pool.dotnet/runtime18,303
Test QuarantineNarrowly quarantine failing dotnet/runtime tests while preserving unaffected coverage. USE FOR: disable a failing test, skip a test against an issue, add ActiveIssue, quarantine a flaky configuration, split failing theory data, suppress a runtime-test failure, or handle a failure in a merged runner. DO NOT USE FOR: fixing the underlying product bug, deleting low-value tests, or broadly disabling a CI lane.dotnet/runtime18,303
Test Scenario EnvGenerate a CoreRun-compatible .env file for a named CoreCLR test scenario defined by src/tests/Common/testenvironment.proj. Optionally merge the effective common and target-specific environment items from a specific src/tests project. USE FOR: "create an env file for jitstress1", "show the environment for this test under gcstress0xc", or scenario-aware standalone test repro generation. DO NOT USE FOR: library test scenarios, arbitrary user-defined environment files, or mobile, browser, WASI, Mondotnet/runtime18,303
Update Os CoverageUpdate OS version references in Helix queue definitions to add new versions, replace EOL versions, or audit coverage against the supported-os matrix. USE FOR: adding new OS versions to Helix queues, replacing EOL OS versions, upgrading "oldest" or "latest" version references, auditing Helix coverage. DO NOT USE FOR: creating new container images (that's dotnet-buildtools-prereqs-docker), updating supported-os.json (that's the update-supported-os skill in dotnet/core).dotnet/runtime18,303
VectorizationGuidance for writing and reviewing SIMD / hardware-intrinsics code in dotnet/runtime. USE FOR: vectorizing a scalar algorithm, writing or reviewing code that uses Vector128/Vector256/Vector512, Vector<T>, or the platform intrinsics in System.Runtime.Intrinsics.X86/Arm/Wasm, and validating remainder handling, load/store safety, and hardware-acceleration fallbacks. DO NOT USE FOR: general performance work unrelated to SIMD (use microbenchmark), or non-vectorized code review (use code-review).dotnet/runtime18,303
Performance BenchmarkGenerate and run ad hoc performance benchmarks to validate code changes. Use this when asked to benchmark, profile, or validate the performance impact of a code change in dotnet/runtime.dotnet/runtime18,285
Change TrackingImplementation details for EF Core change tracking. Use when changing InternalEntityEntry, ChangeDetector, SnapshotFactoryFactory, or related entity state, snapshot, or property accessor code.dotnet/efcore14,793
Cosmos ProviderImplementation details for the EF Core Azure Cosmos DB provider. Use when changing Cosmos-specific code.dotnet/efcore14,793
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/efcore14,793
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/efcore14,793
Make InstructionsCreate and evaluate VS Code file-based instructions (.instructions.md files). Use when asked to create, scaffold, or add file-based instructions for Copilot. Generates scoped instructions and a paired Vally harness eval.dotnet/efcore14,793
Make SkillCreate and evaluate new Agent Skills for GitHub Copilot. Use when asked to create, scaffold, or add a skill. Generates SKILL.md, optional resources, and a paired Vally harness eval.dotnet/efcore14,793
MigrationsImplementation details for EF Core migrations. Use when changing MigrationsSqlGenerator, model diffing, migration operations, HistoryRepository, the Migrator or related classes.dotnet/efcore14,793
Model BuildingImplementation details for EF Core model building. Use when changing ConventionSet, ModelBuilder, IConvention implementations, ModelRuntimeInitializer, RuntimeModel, or related classes.dotnet/efcore14,793
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/efcore14,793
Run ApichiefRun ApiChief in the EF Core repo to emit baselines, summaries, deltas, review files, or breaking-change checks. Use when refreshing `*.baseline.json`, preparing API review artifacts, or validating API changes.dotnet/efcore14,793
ScaffoldingImplementation details for EF Core scaffolding (reverse engineering). Use when changing ef dbcontext scaffold pipeline implementation, database schema reading, CSharpModelGenerator, or related classes.dotnet/efcore14,793
Servicing PrCreate EF Core PRs targeting servicing release branches (release/*). Use when working on a PR that targets a release branch, backporting a fix from main, or when the user mentions servicing, patch, or release branch.dotnet/efcore14,793
Sqlite AdonetImplementation details for the Microsoft.Data.Sqlite ADO.NET provider. Use when changing files under `src/Microsoft.Data.Sqlite.Core/`.dotnet/efcore14,793
ToolingImplementation details for the EF Core dotnet-ef CLI and tooling. Use when changing dotnet-ef commands, the ef wrapper, EFCore.Tools (PMC), or EFCore.Tasks MSBuild integration.dotnet/efcore14,793
TriageUse this skill to triage an incoming issue on the EF Core repo (bug report or feature request). Sets the issue type (bug/feature), assigns EF area labels, attempts to arrive at a minimal repro reproducing the bug, checks whether it represents a regression, finds possible duplicates, etc.dotnet/efcore14,793
Update PipelineImplementation details for EF Core SaveChanges and the update pipeline. Use when changing CommandBatchPreparer, UpdateSqlGenerator, ModificationCommand, or related classes.dotnet/efcore14,793
Whats New Include Content RulesContent rules and formatting standards for ASP.NET Core What's New include files. Use when creating or editing include files in aspnetcore/release-notes/*/includes/. Covers heading levels, xref API references, link formatting, phrasing style, breaking change designations, contributor acknowledgments, file naming, and exclusions. Use for: What's New include file, release notes include, xref format, include content rules, H3 heading level, relative link Microsoft Learn, include file naming conventdotnet/AspNetCore.Docs13,133
Aspire**WORKFLOW SKILL** - Top-level router for Aspire 13.4 distributed apps. Detects the AppHost, enforces safety guardrails, and routes to the right sub-skill. USE FOR: Aspire AppHost detected, aspire CLI, distributed app, cloud-native .NET, aspire start, aspire stop, aspire resource, aspire deploy, aspire destroy, aspire publish, aspire init, aspire new, aspire add, aspire integration list/search, aspire wait, aspire describe, aspire ps, aspire dashboard run, aspire doctor, aspire update, aspire lodotnet/eShop10,936
Aspire Deployment**WORKFLOW SKILL** — Deploy Aspire apps from AppHost models to Docker Compose, Kubernetes, Azure, or AWS. WHEN: "deploy Aspire app", "publish Aspire artifacts", "deploy to Azure Container Apps", "generate Kubernetes artifacts", "tear down Aspire deployment". INVOKES: aspire CLI, Aspire docs, target cloud/container CLIs. FOR SINGLE OPERATIONS: use generic Azure, Kubernetes, Docker, or AWS tools only when no Aspire AppHost exists.dotnet/eShop10,936
Aspire Init**WORKFLOW SKILL** - First-run flow for adding Aspire to a repo. Picks `aspire new` (greenfield) or `aspire init` (existing repo), drops the AppHost skeleton, then hands off to `aspireify` for resource wiring. USE FOR: aspire init, aspire new, aspire-starter, aspire-ts-starter, aspire-py-starter, add Aspire to existing repo, scaffold Aspire app, bootstrap Aspire, no AppHost detected, install aspireify, generated .aspire/modules. DO NOT USE FOR: AppHost wiring on an existing AppHost (use aspireifdotnet/eShop10,936
Aspire Monitoring**ANALYSIS SKILL** - Observe Aspire apps: logs, traces, metrics, resource state, telemetry export, browser telemetry, and the standalone dashboard. Routes between local Aspire CLI, AKS workload diagnostics, and deployed Azure resource health. USE FOR: aspire logs, aspire otel logs, aspire otel traces, aspire otel spans, aspire describe, aspire ps, aspire export, aspire dashboard run, --include-hidden, browser logs in dashboard, WithBrowserLogs, App Insights query, AKS pod logs, container app logdotnet/eShop10,936
Aspire Orchestration**WORKFLOW SKILL** — Manage Aspire AppHost lifecycle and recover from file locks, port conflicts, and orphaned processes. WHEN: "start my Aspire app", "aspire start", "aspire stop", "aspire wait", "restart the API service", "file lock error", "MSB3491", "CS2012", "port already in use", "upgrade Aspire CLI", "aspire update --self", "proxies missing in aspire ps", "--include-hidden", "aspire integration list", "aspire integration search", "default watch", "hot reload". INVOKES: aspire CLI (start, dotnet/eShop10,936
Aspireify**WORKFLOW SKILL** - Wire an Aspire AppHost after `aspire init` drops a skeleton. Scans the repo, proposes a resource graph, edits the AppHost (C#, file-based C#, or TypeScript), wires `Aspire.ServiceDefaults` + OTel, validates with `aspire start`, then self-deactivates. USE FOR: wire AppHost, scaffold resource graph, add Postgres/Redis/Rabbit/Mongo to Aspire, connect frontend to API, after `aspire init` what next, AddNextJsApp, AddViteApp, WithBrowserLogs, file-based apphost.cs, apphost.ts, unidotnet/eShop10,936
Dotnet InspectQuery .NET APIs across NuGet packages, platform libraries, and local files. Search for types, list API surfaces, compare and diff versions, find extension methods and implementors. Use whenever you need to answer questions about .NET library contents.dotnet/eShop10,936
Playwright CliAutomate browser interactions, test web pages and work with Playwright tests.dotnet/eShop10,936
Ci ScanAnalyze recent dotnet/machinelearning MachineLearning-CI failures locally, identify stable failure signatures, deduplicate them against Known Build Error issues, and draft up to three actionable KBE issues. Use when asked to scan ML.NET CI, investigate recurring main-branch failures, or run the former ci-scan agent locally.dotnet/machinelearning9,355
Ci Scan FeedbackAudit the local dotnet/machinelearning ci-scan skill using recent ci-scan issues, maintainer feedback, and an optional local scan report, then draft targeted prompt improvements. Use when reviewing scanner quality, investigating false-positive KBEs, or improving the local ci-scan methodology.dotnet/machinelearning9,355
Code Testing AgentGenerates comprehensive, workable unit tests for any programming language using a multi-agent pipeline. Use when asked to generate tests, write unit tests, improve test coverage, add test coverage, create test files, or test a codebase. Supports C#, TypeScript, JavaScript, Python, Go, Rust, Java, and more. Orchestrates research, planning, and implementation phases to produce tests that compile, pass, and follow project conventions.dotnet/machinelearning9,355
Issue TriageTriage a dotnet/machinelearning GitHub issue locally by selecting the best repository label, adding untriaged, identifying the affected ML.NET area, and drafting a useful maintainer comment. Use when asked to triage, classify, label, or respond to an ML.NET issue.dotnet/machinelearning9,355
Repo Health CheckRun the dotnet/machinelearning repository health check locally, covering issue backlog, pull requests, GitHub Actions, and Azure DevOps pipelines, then draft a dashboard update and prioritized investigations. Use when asked for ML.NET repository health, maintenance status, stale work, or CI trends.dotnet/machinelearning9,355
Repo Health GroomGroom the dotnet/machinelearning repo-health dashboard locally by linking investigation results, marking resolved findings, archiving stale entries, and drafting conservative comment minimization. Use when asked to clean, update, or maintain the ML.NET health dashboard.dotnet/machinelearning9,355
Repo Health InvestigateInvestigate one dotnet/machinelearning repository-health finding locally, gather evidence for an issue, pull request, or pipeline problem, determine root cause confidence, and draft a dashboard report. Use when following up a repo-health finding or investigating a specific ML.NET maintenance risk.dotnet/machinelearning9,355
Agentic WorkflowsRoute gh-aw workflow design/create/debug/upgrade requests to the right prompts.dotnet/skills5,575