Use ManagedCode.Communication when a .NET application needs explicit result objects, structured errors, and predictable service or API boundaries instead of exception-driven…
.NET Router Skill
Primary router skill for broad .NET work. Classify the repo by app model and cross-cutting concern first, then switch to the narrowest matching .NET skill instead of staying at a generic layer. USE FOR: general .NET requests without a narrower framework; C# implementation, debugging, review, or refactoring; routing to framework and tooling skills. DO NOT USE FOR: unrelated stacks; tasks already covered by a narrower .NET skill. INVOKES: inspect the repository context, edit targeted files, and run relevant build, test, lint, or validation commands when changes are made.
Trigger On
- the user asks for general
.NEThelp without naming a narrower framework or tool - implementing, debugging, reviewing, or refactoring C# or
.NETcode in a repo with multiple app models or frameworks - deciding which
.NETskill should own a task before editing code - tasks that combine platform work with testing, quality, architecture, setup, or migration decisions
Workflow
- Detect the real stack first:
- target frameworks and SDK version - LangVersion - project SDKs and workload hints - hosting model and app entry points - test framework and runner - analyzers, formatters, coverage, and CI quality gates
- Route to the narrowest platform skill as soon as the stack is known:
- Web: aspnet-core, minimal-apis, web-api, blazor, signalr, grpc - Cloud and hosting: aspire, azure-functions, worker-services - Desktop and client: maui, wpf, winforms, winui - Data and distributed: entity-framework-core, entity-framework6, orleans - AI and agentic: semantic-kernel, microsoft-extensions-ai, microsoft-agent-framework, mlnet, mixed-reality - Legacy: legacy-aspnet, wcf, workflow-foundation
- Route cross-cutting work to the companion skill instead of keeping it inside generic
.NETadvice:
- project bootstrap or repo shape: project-setup, architecture - frontend asset analysis in mixed .NET plus Node repos: eslint, stylelint, htmlhint, webhint, biome, sonarjs, metalint, chous - code review: code-review - language features: modern-csharp - testing: tunit, xunit, mstest - format, analyzers, coverage, and CI: format, code-analysis, quality-ci, coverlet, reportgenerator - maintainability and architecture rules: complexity, netarchtest, archunitnet
- If more than one specialized skill applies, prefer the one closest to the user-visible behavior first, then pull in the quality or tooling skill second.
- Do not stop at this skill once a narrower match exists. This skill should classify and hand off, not become a generic dumping ground.
- After code changes, validate with the repository's actual build, test, and quality workflow instead of generic
.NETcommands.
Deliver
- the correct specialized skill choice for the task
- repo-compatible code or documentation changes that stay aligned with the detected stack
- validation evidence that matches the real project runner and quality toolchain
Validate
- the chosen downstream skill actually exists in the catalog
- platform assumptions match project SDKs, packages, and workloads
- generic guidance has been replaced by framework-specific guidance whenever possible
- runner-specific commands are not mixed incorrectly
- language or runtime features are only used when the repo supports them
Related skills
Use ManagedCode.MimeTypes when a .NET application needs consistent MIME type detection, extension mapping, and content-type decisions for uploads, downloads, or HTTP responses.
Use the Microsoft.Extensions stack correctly across Generic Host, dependency injection, configuration, logging, options, HttpClientFactory, and other shared infrastructure…
Related agents
.NET Router
Broad .NET triage agent that classifies the repo and routes work to the right skills or specialist agents.
Also works: dotnet agents install router