@dotnet
Organization
Home of the open source .NET platform
112 skills1 repository 5.7K
Diagnose why the dotnet-msbuild binlog MCP server will not start or connect. Check the selected SDK, package sources, and launch logs, then identify a recovery that respects organizational policies and verify that the host discovers the server’s tools.
Identify repeated NuGet package restores across .NET build, test, and publish steps. Check whether earlier restores cover each later step, apply targeted changes, and validate the pipeline without removing required dependency restoration.
Assess whether tests detect the wrong behavior relevant to a specific change, PR, or commit. Link findings to exact revisions, compare faulty and correct behavior when execution is authorized, and distinguish observed results from predictions.
Use the new Process APIs in .NET 11 applications to run external commands, capture output and errors, and manage child processes. Guidance covers waiting for completion, reading output, and controlling whether processes survive their parent.
Match C# and .NET tasks to the appropriate specialist skill using the request and project evidence. Invoke available specialists, explain how to obtain missing plugins, and complete suitable tasks with standard tooling when possible.
Add, repair, and strengthen tests for existing code using the project's testing framework. Covers regression cases, boundary conditions, flaky tests, and coverage gaps, with validation that links requested behaviors to specific tests.
Create Vally evaluation specifications for skills, custom agents, and workflow packages. Design distinct test requests, prepare fixture files, define automated checks and outcome rubrics, and size comparisons to provide meaningful evidence without favoring the skill’s wording.
Write and review GitHub Actions workflows for syntax and structural correctness. Check quoting around expressions and special characters, then validate with actionlint, a workflow checker, to catch errors that ordinary YAML parsing can miss.
Diagnose why an existing skill fails evaluations or shows no clear improvement. Separate content problems from test data, execution failures, activation issues, and insufficient evaluation tasks, then apply targeted fixes and validate them.
Create the starting files for a new agent skill, including SKILL.md, metadata, and optional folders. It guides descriptions that help agents select the skill, actionable workflows, ownership entries, and validation checks.
Create VS Code custom agents for roles such as planning or code review. It builds .agent.md files with role instructions, permitted tools, and optional handoffs that let users move work to another agent.
Route GitHub Agentic Workflows requests to the appropriate task guide. It selects prompts for design, creation, updates, debugging, or upgrades, with additional guidance for specialized tasks and repository-specific instructions when available.
Prepare .NET projects for Native AOT, compilation before execution, and trimming, which removes unused code. Use build warnings to guide type annotations, reflection changes, and source-generated JSON serialization, then check all target frameworks.
Write and repair custom MSBuild targets, the steps that organize build tasks. Preserve existing build sequences, choose appropriate insertion points, distinguish returned results from rebuild checks, and register generated files for cleanup.
Create a missing .NET test project or repair references and solution registration in an existing one. Follow the repository’s framework and package conventions, then verify the build or test entry point used by CI, the automated integration process.
Upgrade MSTest v3 test projects to v4 by updating packages, adapting code to changed APIs, and checking execution behavior. It also helps resolve build errors and problems finding tests in CI after an upgrade.
Review explicitly selected tests or bounded pull request changes without running or editing code. Receive a follow-up decision for each test, A–F quality bands where assessable, evidence-based notes, and concrete suggestions for improvement.
Find source files with no matching test references by parsing code without building or running tests. Produces a source-to-test map and suggested test locations, helping plan test additions across supported programming languages.
Make C# code testable when it directly uses static services such as time, files, or processes. It introduces existing abstractions or minimal wrappers, supplies dependency registration, and demonstrates tests with controlled substitutes for real resources.
Migrate .NET tests from xUnit.net v2 to v3 while preserving the existing test runner. Update packages, project settings, and affected test code, then verify test discovery, execution, and skip behavior.
Upgrade an existing .NET 10 project to .NET 11 by updating framework targets and packages, fixing compatibility issues, reviewing runtime behavior changes, and verifying builds, tests, and deployment configuration.
Turn an existing .NET project into a reusable dotnet new template while preserving its settings and conventions. Create parameters and conditional content, test generated projects, and prepare the packaging files needed for NuGet distribution.
Set up a persistent Microsoft Testing Platform console host that applies code edits and automatically reruns tests. It covers package setup, test selection, and restarting the host when an edit cannot be applied while running.
Make specific C# behavior testable by adding a minimal way to replace time, randomness, or other external dependencies. Preserve public APIs and production behavior, then run repeatable tests without real file access or waiting.
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