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wshaddix

@wshaddix seed · attribution · source repo

0 followers · 165 skills

1. ▌
   Fly Io · wshaddix bundle

   Deploy, configure, and manage applications on the Fly.io platform using flyctl CLI, fly.toml configuration, Fly Machines, Fly Volumes, private networking, secrets, health checks, autoscaling, and GitHub Actions CI/CD. Use when deploying any application to Fly.io, writing or modifying fly.toml configuration, managing Fly Machines or Volumes, configuring networking (public services, private 6PN, Flycast, custom domains, TLS), setting secrets, configuring health checks, setting up autostop/autostart or metrics-based autoscaling, deploying with GitHub Actions, managing Fly Postgres databases, or preparing an app for production on Fly.io.
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   Slopwatch · wshaddix

   Patterns for detecting and managing code smells and technical debt in .NET applications. Run Slopwatch CLI to detect LLM reward hacking, disabled tests, suppressed warnings, empty catches, and other shortcuts. Use when identifying code smells, running quality gates in CI/CD, or validating LLM-generated code changes.
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   Dotnet Grpc · wshaddix

   Building gRPC services. Proto definition, code-gen, ASP.NET Core host, streaming, auth.
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   Dotnet Msix · wshaddix

   Packaging MSIX apps. Creation, signing, Store submission, App Installer sideload, auto-update.
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   Local Tools · wshaddix

   Best practices for working with .NET local tools, including manifest management, tool installation, and versioning. Use when setting up dotnet-tools.json for a project, installing or updating local tools, or managing tool versions across team members.
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6. ▌
   Dotnet Winui · wshaddix

   Building WinUI 3 apps. Windows App SDK setup, XAML patterns, MSIX/unpackaged deploy, UWP migration.
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   Dotnet Xunit · wshaddix

   Writing xUnit tests. v3 Fact/Theory, fixtures, parallelism, IAsyncLifetime, v2 compatibility.
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8. ▌
   Bootstrap5 UI · wshaddix bundle

   Production-grade Bootstrap 5.3 patterns for building modern, responsive web UIs in HTML and ASP.NET Core Razor Pages/Views. Use when creating or styling web pages, layouts, navigation, forms, cards, modals, tables, or any UI component with Bootstrap 5. Covers the grid system, responsive breakpoints, utility classes, color modes (dark/light), accessibility, and integration with ASP.NET Core tag helpers and Razor syntax. Trigger on any task involving Bootstrap CSS classes, responsive HTML layouts, Razor Page UI design, or front-end styling for .NET web applications.
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9. ▌
   Crap Analysis · wshaddix

   Analyze 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. Use when evaluating code quality and test coverage before changes, identifying high-risk code that needs refactoring or testing, setting up coverage collection for a .NET project, or establishing coverage thresholds for CI/CD pipelines.
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10. ▌
    Dotnet Add CI · wshaddix

    Adding CI/CD to a .NET project. GitHub Actions vs Azure DevOps detection, workflow templates.
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11. ▌
    Feature Flags · wshaddix

    Microsoft.FeatureManagement patterns for feature toggles, gradual rollouts, and A/B testing in ASP.NET Core Razor Pages applications. Use when implementing feature toggles in ASP.NET Core applications, setting up gradual feature rollouts, or configuring A/B testing scenarios with feature flags.
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12. ▌
    File Handling · wshaddix

    File uploads, streaming, storage abstractions, and secure file handling patterns for ASP.NET Core Razor Pages applications. Use when implementing secure file uploads in Razor Pages, streaming large files, or creating storage abstractions for file operations.
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13. ▌
    Rate Limiting · wshaddix

    Rate limiting patterns for ASP.NET Core Razor Pages applications. Covers fixed window, sliding window, token bucket algorithms, and distributed rate limiting with Redis. Use when implementing rate limiting in ASP.NET Core applications, choosing between different rate limiting algorithms, or setting up distributed rate limiting with Redis.
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14. ▌
    Serialization · wshaddix

    JSON and binary serialization patterns for .NET applications, including System.Text.Json source generators, Protocol Buffers, MessagePack, and AOT-compatible best practices. Use when configuring JSON serialization, choosing between formats, implementing Protocol Buffers for high-performance scenarios, or working with Native AOT.
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15. ▌
    Skill Creator · wshaddix bundle

    Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends OpenCode's capabilities with specialized knowledge, workflows, or tool integrations.
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16. ▌
    Csharp Scripts · wshaddix

    Run single-file C# programs as scripts for quick experimentation, prototyping, and concept testing. Use when the user wants to write and execute a small C# program without creating a full project.
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17. ▌
    Dotnet Advisor · wshaddix

    Working with .NET, C#, ASP.NET Core, or related frameworks. Routes to specialist skills.
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18. ▌
    Dotnet File Io · wshaddix

    Doing file I/O. FileStream, RandomAccess, FileSystemWatcher, MemoryMappedFile, paths.
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19. ▌
    Dotnet Openapi · wshaddix

    Generating OpenAPI docs. MS.AspNetCore.OpenApi (.NET 9+), Swashbuckle migration, NSwag.
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20. ▌
    Dotnet Uno MCP · wshaddix

    Using Uno MCP server. Tool detection, search-then-fetch workflow, init rules, fallback, citation.
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21. ▌
    Testcontainers · wshaddix bundle

    Patterns for using Testcontainers in .NET integration tests to spin up real dependencies like databases and message queues. Use when writing integration tests that require real databases, testing with message brokers like RabbitMQ or Kafka, or isolating test dependencies with Docker containers.
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22. ▌
    Data Protection · wshaddix

    ASP.NET Core Data Protection API patterns for encryption, key management, and secure data handling in web applications. Use when protecting sensitive data at rest or in transit, managing encryption keys in ASP.NET Core applications, or implementing secure token generation and validation.
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23. ▌
    Dotnet Aot Wasm · wshaddix

    AOT-compiling for WebAssembly. Blazor/Uno WASM AOT, size vs speed, lazy loading, Brotli.
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24. ▌
    Dotnet API Docs · wshaddix

    Generating API documentation. DocFX setup, OpenAPI-as-docs, doc-code sync, versioned docs.
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25. ▌
    Dotnet Channels · wshaddix

    Using producer/consumer queues. Channel<T>, bounded/unbounded, backpressure, drain patterns
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26. ▌
    Dotnet Maui Aot · wshaddix

    Optimizing MAUI for iOS/Catalyst. Native AOT pipeline, size/startup gains, library gaps, trimming.
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27. ▌
    Dotnet Trimming · wshaddix

    Making apps/libraries trim-safe. Annotations, ILLink descriptors, IL2xxx warnings, IsTrimmable.
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28. ▌
    Dotnet XML Docs · wshaddix

    Writing XML doc comments. Tags, inheritdoc, GenerateDocumentationFile, warning suppression.
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29. ▌
    Efcore Patterns · wshaddix

    Entity Framework Core best practices including NoTracking by default, query splitting for navigation collections, migration management, dedicated migration services, interceptors, compiled queries, and connection resiliency. Use when setting up EF Core in a new project, optimizing query performance, managing database migrations, integrating EF Core with .NET Aspire, or debugging change tracking issues.
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30. ▌
    Dotnet Gc Memory · wshaddix

    Tuning GC and memory. GC modes, LOH/POH, Gen0/1/2, Span/Memory deep patterns, ArrayPool, profiling.
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31. ▌
    Dotnet Modernize · wshaddix

    Analyzing .NET code for modernization. Outdated TFMs, deprecated packages, superseded patterns.
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32. ▌
    Dotnet Profiling · wshaddix

    Diagnosing .NET performance issues. dotnet-counters, dotnet-trace, dotnet-dump, flame graphs.
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33. ▌
    Security Headers · wshaddix

    Security headers configuration and best practices for ASP.NET Core Razor Pages applications. Covers CSP, HSTS, X-Frame-Options, and comprehensive security middleware setup. Use when configuring security headers in ASP.NET Core applications, implementing Content Security Policy (CSP), or setting up HSTS and other security-related HTTP headers.
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34. ▌
    Snapshot Testing · wshaddix

    Patterns for snapshot testing in .NET applications using Verify. Covers API responses, scrubbing non-deterministic values, custom converters, HTTP response testing, email templates, and CI/CD integration. Use when implementing snapshot tests for API responses, verifying UI component renders, detecting unintended changes in serialization output, or approving public API surfaces.
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35. ▌
    API Design · wshaddix

    Design stable, compatible public APIs using extend-only design principles. Manage API compatibility, wire compatibility, versioning, naming conventions, parameter ordering, and return types for NuGet packages and distributed systems. Use when designing public APIs for NuGet packages or libraries, making changes to existing public APIs, planning wire format changes for distributed systems, or reviewing pull requests for breaking changes.
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36. ▌
    Dotnet Ado Unique · wshaddix

    Using ADO-exclusive features. Environments, approvals, service connections, classic releases.
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37. ▌
    Dotnet Containers · wshaddix

    Containerizing .NET apps. Multi-stage Dockerfiles, SDK container publish (.NET 8+), rootless.
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38. ▌
    Dotnet Gha Deploy · wshaddix

    Deploying .NET from GitHub Actions. Azure Web Apps, GitHub Pages, container registries.
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39. ▌
    Dotnet Native Aot · wshaddix

    Publishing Native AOT. PublishAot, ILLink descriptors, P/Invoke, size optimization, containers.
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40. ▌
    Dotnet Playwright · wshaddix

    Automating browser tests in .NET. Playwright E2E, CI browser caching, trace viewer, codegen.
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41. ▌
    Dotnet Resilience · wshaddix

    Adding fault tolerance. Polly v8 + MS.Extensions.Http.Resilience, retry/circuit breaker/timeout.
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42. ▌
    Dotnet Tunit Test · wshaddix

    Guidelines for writing TUnit tests in .NET, including setup, assertions, async testing, and best practices. Use when writing unit tests with TUnit framework, setting up TUnit in a .NET project, or migrating from other test frameworks to TUnit.
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43. ▌
    Dotnet UI Chooser · wshaddix

    Selecting a .NET UI framework. Decision tree across Blazor, MAUI, Uno, WinUI, WPF, WinForms.
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44. ▌
    Dotnet Wpf Modern · wshaddix

    Building WPF on .NET 8+. Host builder, MVVM Toolkit, Fluent theme, performance, modern C# patterns.
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45. ▌
    Playwright Blazor · wshaddix

    End-to-end testing patterns for Blazor applications using Playwright, including component testing and page navigation. Use when writing E2E tests for Blazor applications, testing Blazor component interactions with Playwright, or setting up Playwright testing infrastructure for Blazor apps.
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46. ▌
    Project Structure · wshaddix

    Guidelines for organizing .NET projects, including solution structure, project references, folder conventions, .slnx format, centralized build properties, and central package management. Use when setting up a new .NET solution with modern best practices, configuring centralized build properties across multiple projects, implementing central package version management, or setting up SourceLink for debugging.
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47. ▌
    Caching Strategies · wshaddix

    Comprehensive caching patterns for ASP.NET Core Razor Pages applications. Covers output caching, response caching, memory caching, distributed caching with Redis, cache invalidation strategies, and HybridCache (.NET 9+). Use when implementing caching in Razor Pages applications, choosing between memory and distributed caching, or optimizing application performance with caching.
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48. ▌
    Csharp Wolverinefx · wshaddix

    Build .NET applications with WolverineFX for messaging, HTTP services, and event sourcing. Use when implementing command handlers, message handlers, HTTP endpoints with WolverineFx.HTTP, transactional outbox patterns, event sourcing with Marten, CQRS architectures, cascading messages, batch message processing, or configuring transports like RabbitMQ, Azure Service Bus, or Amazon SQS.
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49. ▌
    Dotnet Add Testing · wshaddix

    Adding test infrastructure to a .NET project. Scaffolds xUnit project, coverlet, layout.
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50. ▌
    Dotnet Ado Publish · wshaddix

    Publishing .NET artifacts from Azure DevOps. NuGet push, containers to ACR, pipeline artifacts.
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51. ▌
    Dotnet Blazor Auth · wshaddix

    Adding auth to Blazor. AuthorizeView, CascadingAuthenticationState, Identity UI, per-model flows.
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52. ▌
    Dotnet Gha Publish · wshaddix

    Publishing .NET artifacts from GitHub Actions. NuGet push, container images, signing, SBOM.
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53. ▌
    Dotnet Github Docs · wshaddix

    Creating GitHub-native docs. README badges, CONTRIBUTING, issue/PR templates, repo metadata.
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54. ▌
    Dotnet HTTP Client · wshaddix

    Consuming HTTP APIs. IHttpClientFactory, typed/named clients, resilience, DelegatingHandlers.
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55. ▌
    Dotnet Uno Targets · wshaddix

    Deploying Uno Platform apps. Per-target guidance for WASM, iOS, Android, macOS, Windows, Linux.
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56. ▌
    Dotnet Uno Testing · wshaddix

    Testing Uno Platform apps. Playwright for WASM, platform-specific patterns, runtime heads.
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57. ▌
    Exception Handling · wshaddix

    Comprehensive exception handling patterns for ASP.NET Core Razor Pages applications. Covers global exception handling, ProblemDetails API, custom error pages, exception middleware, and graceful degradation strategies. Use when implementing error handling in Razor Pages applications, configuring global exception middleware, or creating user-friendly error pages and API error responses.
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58. ▌
    Package Management · wshaddix

    NuGet package management best practices including versioning strategies, central package management, and dependency resolution. Use when setting up Central Package Management (CPM), managing package versions across multiple projects, or resolving dependency conflicts in .NET solutions.
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59. ▌
    Background Services · wshaddix

    Hosted services, background jobs, outbox patterns, and graceful shutdown handling for ASP.NET Core applications. Includes patterns for reliable job processing, distributed systems, and lifecycle management. Use when implementing background processing in ASP.NET Core applications, handling outbox patterns for reliable message delivery, or managing graceful service shutdown.
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60. ▌
    Dotnet Ado Patterns · wshaddix

    Designing composable Azure DevOps YAML pipelines. Templates, variable groups, multi-stage, triggers.
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61. ▌
    Dotnet API Security · wshaddix

    Implementing API auth. Identity, OAuth/OIDC, JWT bearer, passkeys (WebAuthn), CORS, rate limiting.
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62. ▌
    Dotnet Cryptography · wshaddix

    Choosing crypto algorithms, hashing, encryption, or key derivation. AES-GCM, RSA, ECDSA, PQC.
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63. ▌
    Dotnet Editorconfig · wshaddix

    Authoring .editorconfig rules. IDE/CA severity, AnalysisLevel, globalconfig, code style enforcement.
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64. ▌
    Dotnet Gha Patterns · wshaddix

    Designing GitHub Actions workflows. Reusable workflows, composite actions, matrix builds, caching.
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65. ▌
    Dotnet Io Pipelines · wshaddix

    Building high-perf network I/O. PipeReader/PipeWriter, backpressure, protocol parsers, Kestrel.
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66. ▌
    Dotnet Localization · wshaddix

    Localizing .NET apps. .resx resources, IStringLocalizer, source generators, pluralization, RTL.
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67. ▌
    Dotnet Maui Testing · wshaddix

    Testing .NET MAUI apps. Appium device/emulator testing, XHarness, platform validation.
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68. ▌
    Dotnet Minimal Apis · wshaddix

    Building Minimal APIs. Route groups, endpoint filters, TypedResults, OpenAPI 3.1, organization.
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69. ▌
    Dotnet Terminal Gui · wshaddix

    Building full TUI apps. Terminal.Gui v2: views, layout (Pos/Dim), menus, dialogs, bindings, themes.
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70. ▌
    Dotnet Test Quality · wshaddix

    Measuring test effectiveness. Coverlet code coverage, Stryker.NET mutation testing, flaky detection.
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71. ▌
    Dotnet Uno Platform · wshaddix

    Building Uno Platform apps. Extensions, MVUX reactive pattern, Toolkit controls, Hot Reload.
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72. ▌
    Middleware Patterns · wshaddix

    Custom middleware patterns for ASP.NET Core applications. Covers request/response pipeline, middleware ordering, conditional middleware, IMiddleware factory pattern, IExceptionHandler (.NET 8+), and reusable middleware components. Use when creating custom middleware in ASP.NET Core applications, understanding middleware pipeline ordering, or implementing cross-cutting concerns like logging, authentication, and caching.
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73. ▌
    Signalr Integration · wshaddix

    SignalR integration patterns for real-time communication in ASP.NET Core Razor Pages applications. Use when implementing real-time features in ASP.NET Core applications, setting up SignalR hubs and clients, or managing WebSocket connections and groups.
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74. ▌
    Validation Patterns · wshaddix

    Comprehensive validation patterns for ASP.NET Core applications. Covers FluentValidation integration, DataAnnotations, IValidatableObject, IValidateOptions<T>, MediatR pipeline behavior, and client-side validation. Use when implementing validation in ASP.NET Core applications, setting up FluentValidation, creating custom validators, configuring options validation, or implementing cross-field validation.
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75. ▌
    Aspire Configuration · wshaddix

    Configure Aspire AppHost to emit explicit app config via environment variables while keeping app code free of Aspire clients and service discovery. Use when wiring AppHost resources to application configuration, ensuring production configuration is transparent and portable outside of Aspire, or avoiding Aspire client packages inside application code.
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76. ▌
    Database Performance · wshaddix

    Database 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. Use when designing data access layers, optimizing slow database queries, choosing between EF Core and Dapper, or avoiding common performance pitfalls.
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77. ▌
    Dotnet Accessibility · wshaddix

    Building accessible .NET UI. SemanticProperties, ARIA, AutomationPeer, testing tools per platform.
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78. ▌
    Dotnet Add Analyzers · wshaddix

    Adding analyzer packages to a project. Nullable, trimming, AOT compat analyzers, severity config.
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79. ▌
    Dotnet Agent Gotchas · wshaddix

    Generating or modifying .NET code. Common agent mistakes: async, NuGet, deprecated APIs, DI.
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80. ▌
    Dotnet CLI Packaging · wshaddix

    Publishing to package managers. Homebrew, apt/deb, winget, Scoop, Chocolatey manifests.
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81. ▌
    Dotnet Msbuild Tasks · wshaddix

    Writing custom MSBuild tasks. ITask, ToolTask, IIncrementalTask, inline tasks, UsingTask.
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82. ▌
    Dotnet Observability · wshaddix

    Adding observability. OpenTelemetry traces/metrics/logs, health checks, custom metrics.
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83. ▌
    Dotnet Wpf Migration · wshaddix

    Migrating desktop apps. WPF/WinForms to .NET 8+, WPF to WinUI or Uno, UWP to WinUI, decision matrix.
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84. ▌
    Mjml Email Templates · wshaddix

    Guidelines for creating responsive email templates using MJML framework with .NET Razor syntax integration. Use when building responsive email templates in .NET applications, integrating MJML with Razor views, or creating email layouts that work across email clients.
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85. ▌
    Razor Pages Patterns · wshaddix

    Best practices for building production-grade ASP.NET Core Razor Pages applications. Focuses on structure, lifecycle, binding, validation, security, and maintainability in web apps using Razor Pages as the primary UI framework. Use when building Razor Pages applications, designing PageModels and handlers, implementing model binding and validation, or securing Razor Pages with authentication and authorization.
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86. ▌
    Dotnet Ado Build Test · wshaddix

    Configuring .NET build/test in Azure DevOps. DotNetCoreCLI task, Artifacts, test results.
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87. ▌
    Dotnet API Versioning · wshaddix

    Versioning HTTP APIs. Asp.Versioning.Http/Mvc, URL segment, header, query string, sunset.
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88. ▌
    Dotnet Blazor Testing · wshaddix

    Testing Blazor components. bUnit rendering, events, cascading params, JS interop mocking.
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89. ▌
    Dotnet Build Analysis · wshaddix

    Interpreting MSBuild output, NuGet errors, or analyzer warnings. Error codes, CI drift fixes.
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90. ▌
    Dotnet Csproj Reading · wshaddix

    Reading or modifying .csproj files. SDK-style structure, PropertyGroup/ItemGroup, CPM, props.
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91. ▌
    Dotnet Gha Build Test · wshaddix

    Configuring .NET build/test in GitHub Actions. setup-dotnet, NuGet caching, test reporting.
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92. ▌
    Dotnet Native Interop · wshaddix

    Calling native libraries via P/Invoke. LibraryImport, marshalling, cross-platform resolution.
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93. ▌
    Dotnet Security Owasp · wshaddix

    Securing .NET code or reviewing for vulnerabilities. OWASP Top 10 mitigations, pattern warnings.
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94. ▌
    Logging Observability · wshaddix

    Production-grade logging and observability patterns for ASP.NET Core Razor Pages. Covers structured logging with Serilog, correlation IDs, health checks, request logging, OpenTelemetry integration, and diagnostic best practices. Use when setting up structured logging in ASP.NET Core applications, implementing distributed tracing with OpenTelemetry, or configuring health checks and observability.
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95. ▌
    Playwright CI Caching · wshaddix

    Optimize CI/CD pipelines by caching Playwright browser binaries and dependencies to speed up test execution. Use when setting up Playwright in CI/CD pipelines, reducing build times by caching browser binaries, or configuring GitHub Actions or Azure DevOps for Playwright tests.
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96. ▌
    Skills Index Snippets · wshaddix

    Code snippets and templates for working with the skills index and marketplace functionality. Use when creating new skills, updating skill index files, or validating skill metadata and structure.
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97. ▌
    Dotnet Aspire Patterns · wshaddix

    Using .NET Aspire. AppHost orchestration, service discovery, components, dashboard, health checks.
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98. ▌
    Dotnet Benchmarkdotnet · wshaddix

    Writing benchmarks. BenchmarkDotNet setup, memory diagnosers, baselines, result analysis.
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99. ▌
    Dotnet Blazor Patterns · wshaddix

    Building Blazor apps. Hosting models, render modes, routing, streaming rendering, prerender.
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100. ▌
     Dotnet CI Benchmarking · wshaddix

     Gating CI on perf regressions. Automated threshold alerts, baseline tracking, trend reports.
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