Use when needing thread-safe primitives for performance-critical code. Covers Mutex (iOS 18+), OSAllocatedUnfairLock (iOS 16+), Atomic types, when to use locks vs actors, deadlock prevention with Swift Concurrency.

Use when ANY beta tester reports a crash, ANY crash appears in Organizer or App Store Connect, crash logs need symbolication, app was killed without crash report, or you need to triage TestFlight feedback

Use when testing async code with Swift Testing. Covers confirmation for callbacks, @MainActor tests, async/await patterns, timeout control, XCTest migration, parallel test execution.

TextKit 2 complete reference (architecture, migration, Writing Tools, SwiftUI TextEditor) through iOS 26

Guide to Xcode 26's Recording UI Automation feature for creating UI tests through user interaction recording.

Use when writing UI tests, recording interactions, tests have race conditions, timing dependencies, inconsistent pass/fail behavior, or XCTest UI tests are flaky - covers Recording UI Automation (WWDC 2025), condition-based waiting, network conditioning, multi-factor testing, crash debugging, and accessibility-first testing patterns

Use when CAAnimation completion handler doesn't fire, spring physics look wrong on device, animation duration mismatches actual time, gesture + animation interaction causes jank, or timing differs between simulator and real hardware - systematic CAAnimation diagnosis with CATransaction patterns, frame rate awareness, and device-specific behavior

subject not detected, hand pose missing landmarks, low confidence observations, Vision performance, coordinate conversion, VisionKit errors, observation nil, text not recognized, barcode not detected, DataScannerViewController not working, document scan issues

Check build environment BEFORE debugging code. **Core principle** 80% of "mysterious" Xcode issues are environment problems (stale Derived Data, stuck simulators, zombie processes), not code bugs.

Use when writing, running, or debugging XCUITests. Covers element queries, waiting strategies, accessibility identifiers, test plans, and CI/CD test execution patterns.

Use when automating Instruments profiling, running headless performance analysis, or integrating profiling into CI/CD - comprehensive xctrace CLI reference with record/export patterns

Expert guidance for fine-tuning LLMs with Axolotl - YAML configs, 100+ models, LoRA/QLoRA, DPO/KTO/ORPO/GRPO, multimodal support

Rust Axum API with Diesel ORM and DDD architecture.

Production patterns for Axum 0.8.x HTTP services with Tower middleware, type-safe routing, state management with FromRef, extractors, and error handling. Use when building REST APIs, HTTP services, web applications, or adding middleware to Axum routers.

Azure AKS Agentic CLI - AI-powered troubleshooting and insights tool for Azure Kubernetes Service. Use when diagnosing AKS cluster issues, getting cluster health insights, troubleshooting networking/storage/security problems, or analyzing cluster configuration with natural language queries.

This skill should be used when working with Azure DevOps from the command line. Trigger when user mentions az devops, az repos, az pipelines, az boards, or asks about managing PRs, work items, pipelines, or repositories in Azure DevOps. Also trigger for questions about Azure DevOps CLI setup, authentication, or querying work items.

Use az CLI for Azure cloud resource management, Azure DevOps operations, VMs, storage, networking, AKS, and Key Vault with comprehensive authentication and output control.

azure-ai-evaluation-py

Build AI applications on Azure using Azure OpenAI, Cognitive Services, and ML services with enterprise patterns

Managed Kubernetes with Azure Kubernetes Service. Configure node pools, networking, identity, monitoring, and scaling. Use for container orchestration, microservices deployment, and Kubernetes workloads on Azure.

Azure cloud services, resource management, and Azure CLI patterns. Use when working with Azure resources, resource groups, ARM templates, az commands (az vm, az network, az storage, az aks), Azure naming conventions, RBAC policies, networking (VNet, NSG, Application Gateway), or implementing Azure best practices for resource organization, cost management, and security.

Manage Azure Boards work items including user stories, tasks, and bugs with WIQL queries. Use when managing Azure Boards work items or creating sprint backlogs.

Provides comprehensive Microsoft Azure guidance including Azure Virtual Machines, Azure Storage (Blob, Files, Disks), Azure SQL Database, Azure App Service, Azure Functions, AKS (Azure Kubernetes Service), Azure DevOps, ARM templates, Bicep, Terraform for Azure, Azure Active Directory, Azure Key Vault, Azure Monitor, cost optimization, and multi-region deployment. Produces infrastructure as code (Terraform/Bicep/ARM), deployment scripts, security configurations, and architecture designs. Use when deploying to Azure, designing Azure infrastructure, migrating to Microsoft Azure, configuring VMs, setting up Azure Storage, managing Azure SQL, working with AKS, or when users mention Azure, Microsoft Cloud, Azure Portal, ARM templates, Bicep, Azure Functions, App Service, or Azure DevOps.

'Performs comprehensive preflight validation of Bicep deployments to Azure, including template syntax validation, what-if analysis, and permission checks. Use this skill before any deployment to Azure to preview changes, identify potential issues, and ensure the deployment will succeed. Activate when users mention deploying to Azure, validating Bicep files, checking deployment permissions, previewing infrastructure changes, running what-if, or preparing for azd provision.'

Plan and execute Azure DevOps migrations between organizations or projects. Use when migrating Azure DevOps resources or consolidating projects.

Build Azure DevOps YAML pipelines for CI/CD, manage releases, artifacts, and deployment environments. Create build and release pipelines, configure triggers, templates, and integrate with Azure services. Use when automating builds, tests, and deployments in Azure DevOps. (project)

Guide for working with Azure DevOps REST APIs and OpenAPI specifications. Use this skill when implementing new Azure DevOps API integrations, exploring API capabilities, understanding request/response formats, or referencing the official OpenAPI specifications from the vsts-rest-api-specs repository.

Comprehensive Azure DevOps REST API skill for work items, pipelines, repos, test plans, wikis, and search operations via MCP tools and direct API calls

Azure DevOps Wiki management skill. Use when working with Azure DevOps wikis for: (1) Creating and organizing wiki pages - provisioned or code-as-wiki, (2) Markdown formatting - TOC, Mermaid diagrams, YAML metadata, code blocks, (3) Wiki structure - .order files, subpages, attachments, (4) Best practices - naming conventions, navigation, searchability, (5) CLI operations - az devops wiki commands, (6) Git-based wiki workflows - clone, edit offline, push changes. Supports both provisioned wikis and published code wikis.

Create or update Azure infrastructure Bicep under infra/ for this project (Cosmos DB account/database/containers, Managed Identity, Container Apps for backend_api) using region japaneast, env dev, and Free Tier enabled. Use when asked to provision Azure infra or write Bicep templates.

Configure Azure services as DAPR components with best practices. Supports Azure Cosmos DB, Service Bus, Key Vault, Blob Storage, Event Grid, and Container Apps. Automatically generates component YAML with managed identity support. Use when integrating Azure services or deploying to Azure.

Azure OpenAI Service 2025 models including GPT-5, GPT-4.1, reasoning models, and Azure AI Foundry integration

Generate Azure Pipelines YAML for CI/CD with multi-stage builds and deployments. Use when creating Azure DevOps pipelines or automating builds.

Query Azure RBAC role assignments and definitions (read-only)

Manage Azure Repos including branches, pull requests, and code reviews. Use when working with Azure Repos or managing repository operations.

Query Azure resources and configurations (read-only)

Research and generate Azure deployment guide with EasyAuth (Google + Facebook) and CosmosDB. This skill searches for current documentation and screenshots to produce an up-to-date setup guide at .docs/azure-setup-guide.md.

azure-sql-optimization

Create and manage Azure Test Plans including test cases, suites, and execution. Use when setting up test plans or managing QA processes.

Troubleshoot Azure using tool-first access, falling back to Azure CLI when necessary. Focus on Virtual Machines, AKS, Azure Container Registry, Storage Accounts, and Log Analytics.

Generate and manage Azure DevOps Wiki pages with markdown content. Use when creating project documentation or wiki pages.

Microsoft Azure architecture patterns and best practices. Use when designing, deploying, or reviewing Azure infrastructure including AKS, App Service, Functions, CosmosDB, and Entra ID.

Searches across your Notion workspace, synthesizes findings from multiple pages, and creates comprehensive research documentation saved as new Notion pages. Turns scattered information into structured reports with proper citations and actionable insights.

View and debug B2C CLI configuration and understand where credentials come from. Use when authentication fails, connection errors occur, wrong instance is used, or you need to verify dw.json settings, environment variables (SFCC_*), or OAuth credentials are loaded correctly.

Implement custom caching with CacheMgr in B2C Commerce. Use when adding application-level caching, cache invalidation, or optimizing performance with custom cache regions. Covers cache definition JSON, CacheMgr API, and cache entry lifecycle.

Create forms with validation in SFRA patterns for B2C Commerce. Use when building checkout forms, account forms, or any form with field definitions, validation rules, and error handling. Covers form XML definitions, server-side validation, and template rendering.

Work with ISML templates in B2C Commerce. Use when writing storefront templates, using isprint/isset/isloop tags, understanding ISML expressions (${...}), or creating custom template modules. Covers tag syntax, expression language, and template includes.

Localize templates, forms, and content in B2C Commerce. Use when adding translations, working with resource bundles (*.properties files), using Resource.msg, or implementing multi-locale support. Covers locale folders, string externalization, and date/currency formatting.