Skills（SKILL.md）は、AIエージェント（Claude Code、Cursor、Codexなど）に特定の能力を追加するための設定ファイルです。
詳しく見る →Set up autonomous coding agent projects with long-running harnesses using Archon MCP for state management. Creates complete project scaffolds with initializer/coding agent prompts, feature tracking, session handoffs, security configuration, and browser testing integration. Based on Anthropic's effective harnesses guide. Use when building autonomous coding agents, long-running AI workflows, or multi-session development projects.
Execute a single phase from roadmap to working code autonomously
Autonomous UI inspection using a dual channel: (1) visual screenshots via Playwright MCP tools, (2) numeric layout metrics via Puppeteer scripts. Includes server --check standardization so agents can start/stop reliably.
Skill for adding feature gating and usage tracking using Autumn.
Skill for integrating Autumn - the billing and entitlements layer over Stripe.
Skill for setting up Autumn billing integration and creating customers.
Avalonia UI development - XAML, MVVM, styling, and patterns
Use when building Avo admin interfaces. Creates resources, actions, filters, and dashboards following Avo conventions. Fetches latest docs dynamically.
Avoid angle-bracket type assertions (<Type>) and use 'as Type' syntax instead
Teaches when and how to use unknown instead of any type in TypeScript. Use when working with TypeScript code that has any types, needs type safety, handling external data, or when designing APIs. Critical for preventing type safety violations.
Expert guidance for creating GitHub Copilot customizations including custom agents, prompts, instructions, and collections. Based on the awesome-copilot community toolkit with 200+ agents, 180+ prompts, and 150+ instructions. Use when customizing GitHub Copilot, creating specialized AI agents, writing coding standards, or building developer productivity tools.
Build AI applications on AWS using Bedrock, SageMaker, and AI/ML services with best practices for enterprise deployment
AWS cost optimization - EC2 Reserved Instances, Savings Plans, Spot, Lambda optimization, Cost Explorer, Trusted Advisor.
Deploys AWS infrastructure with research-first approach. Uses AWS MCP tools for documentation, regional availability, and resource management. ALWAYS searches AWS documentation before writing code, explains services and abbreviations, considers alternatives, maintains organized aws/ folder, and CRITICALLY offers to destroy resources after testing. Use PROACTIVELY for any AWS deployment, Terraform, ECS, Fargate, Lambda, S3, RDS, or cloud infrastructure tasks. MUST BE USED for prototype/learning projects to avoid unexpected costs. (project)
AWS infrastructure as code with Terraform and CDK, including VPC design, EKS cluster setup, S3 bucket configuration, RDS databases, DynamoDB tables, Lambda functions, API Gateway, CloudWatch monitoring, IAM policies, security groups, cost optimization, multi-account strategies, CI/CD with CodePipeline, infrastructure testing, disaster recovery, compliance automation, and cloud-native best practices for production workloads.
Amazon Bedrock patterns using AWS SDK for Java 2.x. Use when working with foundation models (listing, invoking), text generation, image generation, embeddings, streaming responses, or integrating generative AI with Spring Boot applications.
Authenticate to AWS using Single Sign-On (SSO). Use when AWS CLI operations require SSO authentication or when SSO session has expired.
Deep integration with axe-core for automated accessibility testing. Execute accessibility scans, interpret WCAG violations, generate compliance reports, and integrate with Playwright/Cypress for comprehensive a11y testing.
Reference for App Store Connect crash analysis, TestFlight feedback, metrics dashboards, and data export workflows
Use when needing synchronous actor access in tests, legacy delegate callbacks, or performance-critical code. Covers MainActor.assumeIsolated, @preconcurrency protocol conformances, crash behavior, Task vs assumeIsolated.
Audit Axiom logs to identify and prioritize errors and warnings, research probable causes, and flag log smells. Use when user asks to check Axiom logs, analyze production errors, investigate log issues, or audit logging patterns.
Use when profiling async/await performance, diagnosing actor contention, or investigating thread pool exhaustion. Covers Swift Concurrency Instruments template, task visualization, actor contention analysis, thread pool debugging.
Use when debugging schema migration crashes, concurrency thread-confinement errors, N+1 query performance, SwiftData to Core Data bridging, or testing migrations without data loss - systematic Core Data diagnostics with safety-first migration patterns
Use when adding debug-only deep links for testing, enabling simulator navigation to specific screens, or integrating with automated testing workflows - enables closed-loop debugging without production deep link implementation
Use when asking about 'FileProtectionType', 'file encryption iOS', 'NSFileProtection', 'data protection', 'secure file storage', 'encrypt files at rest', 'complete protection', 'file security' - comprehensive reference for iOS file encryption and data protection APIs
Reference — Comprehensive Apple Human Interface Guidelines covering colors (semantic, custom, patterns), backgrounds (material hierarchy, dynamic), typography (built-in styles, custom fonts, Dynamic Type), SF Symbols (rendering modes, color, axiom-localization), Dark Mode, accessibility, and platform-specific considerations
Use when implementing in-app purchases, StoreKit 2, subscriptions, or transaction handling - testing-first workflow with .storekit configuration, StoreManager architecture, transaction verification, subscription management, and restore purchases for consumables, non-consumables, and auto-renewable subscriptions
Use when planning comprehensive Liquid Glass adoption across an app, auditing existing interfaces for Liquid Glass compatibility, implementing app icon updates, or understanding platform-specific Liquid Glass behavior - comprehensive reference guide covering all aspects of Liquid Glass adoption from WWDC 2025
Use when debugging connection timeouts, TLS handshake failures, data not arriving, connection drops, performance issues, or proxy/VPN interference - systematic Network.framework diagnostics with production crisis defense
Use when debugging 'files disappeared', 'data missing after restart', 'backup too large', 'can't save file', 'file not found', 'storage full error', 'file inaccessible when locked' - systematic local file storage diagnostics
Use when optimizing Swift code performance, reducing memory usage, improving runtime efficiency, dealing with COW, ARC overhead, generics specialization, or collection optimization
Use when SwiftData migrations crash, fail to preserve relationships, lose data, or work in simulator but fail on device - systematic diagnostics for schema version mismatches, relationship errors, and migration testing gaps
Use when separating logic from SwiftUI views, choosing architecture patterns, refactoring view files, or asking 'where should this code go', 'how do I organize my SwiftUI app', 'MVVM vs TCA vs vanilla SwiftUI', 'how do I make SwiftUI testable' - comprehensive architecture patterns with refactoring workflows for iOS 26+
Use when testing async code with Swift Testing. Covers confirmation for callbacks, @MainActor tests, async/await patterns, timeout control, XCTest migration, parallel test execution.
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 writing, running, or debugging XCUITests. Covers element queries, waiting strategies, accessibility identifiers, test plans, and CI/CD test execution patterns.
Use az CLI for Azure cloud resource management, Azure DevOps operations, VMs, storage, networking, AKS, and Key Vault with comprehensive authentication and output control.
Build AI applications on Azure using Azure OpenAI, Cognitive Services, and ML services with enterprise patterns
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.
Azure OpenAI Service 2025 models including GPT-5, GPT-4.1, reasoning models, and Azure AI Foundry integration
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.
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.
Generates Babel configuration for JavaScript transpilation in tests. Creates babel.config.js file.
Test software in the style of James Bach, pioneer of exploratory testing and context-driven testing. Emphasizes skilled human investigation, heuristics-based test design, and adapting to context rather than following rigid scripts. Use when designing test strategies, performing exploratory testing, or building thinking testers.
Design and implement RESTful API endpoints with proper HTTP methods, status codes, and consistent naming conventions. Use this skill when creating or modifying API routes, endpoints, or server-side request handlers. When working on files in src/pages/api/, files containing API route definitions, files implementing REST endpoints, files handling HTTP requests and responses, server middleware for API requests, API authentication and authorization logic, and files defining API versioning strategies. When designing URL structures for resources, implementing query parameter handling for filtering/sorting/pagination, setting up rate limiting for API endpoints, or configuring CORS and API security headers.
Expert backend architect specializing in scalable API design,
Bootstraps complete backend with Apso, including API setup, database configuration, and testing. Triggers when user needs to create backend, setup API, or initialize server.
Expert backend development guidance covering Node.js, Python, Java, Go, API design (REST/GraphQL/gRPC), database patterns, authentication, caching, message queues, microservices, and testing. Produces production-ready, scalable, and secure backend code with industry best practices. Use when building APIs, implementing business logic, designing data models, integrating services, or when users mention backend development, server-side code, APIs, databases, or microservices.