aaronontheweb
- 41 skills
- 0 followers
- 11 hours ago last updated
- ▌ Meetup MCP · aarononthewebUse this skill when working with the Meetup MCP server to manage a Meetup group — drafting events, searching events, editing details, managing venues, and uploading photos. Covers the full tool set, auth flow, safety model, and common workflows.
- ▌ Simplify · aaronontheweb bundleIdentify and prioritize technical debt, competing mechanisms, and safe code simplifications using architecture evidence, metrics, and history. Use when asked to assess debt or reduce system complexity; findings do not authorize automatic refactoring.
- ▌ Architecture Assessment · aaronontheweb bundleReconstruct a software system's current architecture from code, runtime wiring, tests, and history. Use for architecture discovery, a legacy-system assessment, or preparing a simplification effort; ordinary feature work does not require a whole-system assessment.
- ▌ Architectural Principles · aaronontheweb bundleGuide design, implementation, and review decisions about new constructs, feature organization, state, contracts, and extension points. Apply maintainability and reversibility defaults within the requested change; not a whole-system assessment or a delivery-planning workflow.
- ▌ API Design · aarononthewebDesign stable, compatible public APIs using extend-only design principles. Manage API compatibility, wire compatibility, and versioning for NuGet packages and distributed systems.
- ▌ R3 Reactive Extensions · aaronontheweb bundleBuild reactive/event-driven C# with R3 (Cysharp's modern reimplementation of Reactive Extensions). Covers the Observable<T>/Observer<T> model, the OnErrorResume error contract, async dispatch with AwaitOperation, Task/IAsyncEnumerable integration, TimeProvider/FrameProvider scheduling, the concurrency contract, and how R3 differs from System.Reactive (Rx.NET).
- ▌ Csharp Nullable Reference Types · aaronontheweb bundleGuidelines for introducing and using nullable reference types (NRT) and System.Diagnostics.CodeAnalysis nullable attributes in C# / .NET codebases. Covers the nullability model, flow analysis, the null-forgiving operator, API design rules, the full attribute catalog (AllowNull, DisallowNull, MaybeNull, NotNull, NotNullWhen, MaybeNullWhen, NotNullIfNotNull, MemberNotNull, MemberNotNullWhen, DoesNotReturn, DoesNotReturnIf), the C# 14 field keyword, incremental migration of legacy codebases, and a code-generation checklist.
- ▌ Opentelemetry Net Instrumentation · aaronontheweb bundleProvides guidance for implementing OpenTelemetry instrumentation in .NET codebases, covering tracing (Activities/Spans), metrics, logs, naming conventions, error handling, performance, SDK setup, resources, context propagation, and API design best practices.
- ▌ API Design 2 · aarononthewebDesign stable, compatible public APIs using extend-only design principles. Manage API compatibility, wire compatibility, and versioning for NuGet packages and distributed systems.
- ▌ Dependency Injection Patterns · aarononthewebOrganize DI registrations using IServiceCollection extension methods. Group related services into composable Add* methods for clean Program.cs and reusable configuration in tests.
- ▌ Microsoft Extensions Configuration · aarononthewebMicrosoft.Extensions.Options patterns including IValidateOptions, strongly-typed settings, validation on startup, and the Options pattern for clean configuration management.
- ▌ Akka Hosting Actor Patterns · aarononthewebPatterns for building entity actors with Akka.Hosting - GenericChildPerEntityParent, message extractors, cluster sharding abstraction, akka-reminders, and ITimeProvider. Supports both local testing and clustered production modes.
- ▌ Csharp Concurrency Patterns · aarononthewebChoosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary.
- ▌ Type Design Performance · aarononthewebDesign .NET types for performance. Seal classes, use readonly structs, prefer static pure functions, avoid premature enumeration, and choose the right collection types.
- ▌ Aspire Integration Testing · aarononthewebWrite integration tests using .NET Aspire's testing facilities with xUnit. Covers test fixtures, distributed application setup, endpoint discovery, and patterns for testing ASP.NET Core apps with real dependencies.
- ▌ Mailpit Integration · aarononthewebTest email sending locally using Mailpit with .NET Aspire. Captures all outgoing emails without sending them. View rendered HTML, inspect headers, and verify delivery in integration tests.
- ▌ Akka Net Aspire Configuration · aarononthewebConfigure Akka.NET with .NET Aspire for local development and production deployments. Covers actor system setup, clustering, persistence, Akka.Management integration, and Aspire orchestration patterns.
- ▌ Aspire Service Defaults · aarononthewebCreate a shared ServiceDefaults project for Aspire applications. Centralizes OpenTelemetry, health checks, resilience, and service discovery configuration across all services.
- ▌ Modern Csharp Coding Standards · aarononthewebWrite modern, high-performance C# code using records, pattern matching, value objects, async/await, Span<T>/Memory<T>, and best-practice API design patterns. Emphasizes functional-style programming with C# 12+ features.
- ▌ Marketplace Publishing · aarononthewebWorkflow for publishing skills and agents to the dotnet-skills Claude Code marketplace. Covers adding new content, updating plugin.json, validation, and release tagging.
- ▌ Verify Email Snapshots · aarononthewebSnapshot test email templates using Verify to catch regressions. Validates rendered HTML output matches approved baseline. Works with MJML templates and any email renderer.
- ▌ Aspire Configuration · aarononthewebConfigure Aspire AppHost to emit explicit app config via environment variables; keep app code free of Aspire clients and service discovery.
- ▌ Database Performance · aarononthewebDatabase access patterns for performance. Separate read/write models, avoid N+1 queries, use AsNoTracking, apply row limits, and never do application-side joins. Works with EF Core and Dapper.
- ▌ Dotnet Devcert Trust · aarononthewebDiagnose and fix .NET HTTPS dev certificate trust issues on Linux. Covers the full certificate lifecycle from generation to system CA bundle inclusion, with distro-specific guidance for Ubuntu, Fedora, Arch, and WSL2.
- ▌ Mjml Email Templates · aarononthewebBuild responsive email templates using MJML markup language. Compiles to cross-client HTML that works in Outlook, Gmail, and Apple Mail. Includes template renderer, layout patterns, and variable substitution.
- ▌ Akka Net Testing Patterns · aarononthewebWrite unit and integration tests for Akka.NET actors using modern Akka.Hosting.TestKit patterns. Covers dependency injection, TestProbes, persistence testing, and actor interaction verification. Includes guidance on when to use traditional TestKit.
- ▌ Playwright CI Caching · aarononthewebCache Playwright browser binaries in CI/CD pipelines (GitHub Actions, Azure DevOps) to avoid 1-2 minute download overhead on every build.
- ▌ Skills Index Snippets · aarononthewebCreate and maintain AGENTS.md / CLAUDE.md snippet indexes that route tasks to the correct dotnet-skills skills and agents (including compressed Vercel-style indexes).
- ▌ Akka Net Best Practices · aarononthewebCritical Akka.NET best practices including EventStream vs DistributedPubSub, supervision strategies, error handling, Props vs DependencyResolver, work distribution patterns, and cluster/local mode abstractions for testability.
- ▌ Playwright Blazor Testing · aarononthewebWrite UI tests for Blazor applications (Server or WebAssembly) using Playwright. Covers navigation, interaction, authentication, selectors, and common Blazor-specific patterns.
- ▌ Dotnet Project Structure · aarononthewebModern .NET project structure including .slnx solution format, Directory.Build.props, central package management, SourceLink, version management with RELEASE_NOTES.md, and SDK pinning with global.json.
- ▌ Package Management · aarononthewebManage NuGet packages using Central Package Management (CPM) and dotnet CLI commands. Never edit XML directly - use dotnet add/remove/list commands. Use shared version variables for related packages.
- ▌ Snapshot Testing · aarononthewebUse Verify for snapshot testing in .NET. Approve API surfaces, HTTP responses, rendered emails, and serialized outputs. Detect unintended changes through human-reviewed baseline files.
- ▌ Testcontainers Integration Tests · aarononthewebWrite integration tests using TestContainers for .NET with xUnit. Covers infrastructure testing with real databases, message queues, and caches in Docker containers instead of mocks.
- ▌ Akka Net Management · aarononthewebAkka.Management for cluster bootstrapping, service discovery (Kubernetes, Azure, Config), health checks, and dynamic cluster formation without static seed nodes.
- ▌ Efcore Patterns · aarononthewebEntity Framework Core best practices including NoTracking by default, query splitting for navigation collections, migration management, dedicated migration services, and common pitfalls to avoid.
- ▌ Ilspy Decompile · aarononthewebUnderstand implementation details of .NET code by decompiling assemblies. Use when you want to see how a .NET API works internally, inspect NuGet package source, view framework implementation, or understand compiled .NET binaries.
- ▌ Dotnet Local Tools · aarononthewebManaging local .NET tools with dotnet-tools.json for consistent tooling across development environments and CI/CD pipelines.
- ▌ Crap Analysis · aarononthewebAnalyze code coverage and CRAP (Change Risk Anti-Patterns) scores to identify high-risk code. Use OpenCover format with ReportGenerator for Risk Hotspots showing cyclomatic complexity and untested code paths.
- ▌ Serialization · aarononthewebChoose the right serialization format for .NET applications. Prefer schema-based formats (Protobuf, MessagePack) over reflection-based (Newtonsoft.Json). Use System.Text.Json with AOT source generators for JSON scenarios.
- ▌ Dotnet Slopwatch · aarononthewebUse Slopwatch to detect LLM reward hacking in .NET code changes. Run after every code modification to catch disabled tests, suppressed warnings, empty catch blocks, and other shortcuts that mask real problems.