Coding standards, frameworks, refactoring, and code review (18.4K skills)
Spring Boot 3 patterns for configuration, DI, and web services. Trigger: When building or refactoring Spring Boot 3 applications.
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Java coding standards for Spring Boot services: naming, immutability, Optional usage, streams, exceptions, generics, and project layout.
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Refactor Spring Boot and Java code to improve maintainability, readability, and adherence to enterprise best practices. This skill transforms messy Spring Boot applications into clean, well-structured solutions following SOLID principles and Spring Boot 3.x conventions. It addresses fat controllers, improper transaction boundaries, field injection anti-patterns, and scattered configuration. Leverages Java 21+ features including record patterns, pattern matching for switch, virtual threads, and sequenced collections.
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Build production Spring Boot applications - REST APIs, Security, Data, Actuator
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Use when working with @Transactional, multi-step database operations, distributed transactions, or any code that needs atomicity guarantees. Covers propagation rules, isolation levels, read-only optimization, and common pitfalls.
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Debug Spring Boot issues systematically. Use when encountering bean errors like NoSuchBeanDefinitionException, circular dependency issues, application startup failures, JPA/Hibernate problems including LazyInitializationException and N+1 queries, security misconfigurations causing 403 Forbidden errors, property binding failures, CSRF token issues, or any Spring Boot application requiring diagnosis with Actuator endpoints and JVM debugging.
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Use when building MCP (Model Context Protocol) servers in Java/Spring Boot. Covers tool registration, resource exposure, prompt templates, and production deployment using the official MCP Java SDK. Use when user mentions MCP, AI agent integration, or tool calling.
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Run the refactor workflow — mandatory architectural justification, test verification, risk-based implementation, and scope enforcement.
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Use when the project follows API-first / OpenAPI-first approach: generating controller interfaces, DTOs, and clients from an OpenAPI spec. Use when you see openapi.yaml, openapi-generator-maven-plugin, or ApiDelegate pattern in the project.
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Use when generating REST controllers, response wrappers, DTOs, error handlers, or any HTTP-facing code. Defines response envelope, HTTP status mapping, pagination, and versioning.
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Run a structured code review — produces a Review Report with CRITICAL, WARNING, and SUGGESTION findings; CRITICAL findings block merge.
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Provides a structured framework for conducting thorough code reviews covering correctness, security, architecture alignment, performance, and technical debt.
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features.json を読み込み、pending な機能を1件ずつ tdd-guide エージェント（内部で tdd-cycle を使用）で実装するスキル。 Context anxiety（トークン上限接近による焦り）と Context rot（情報劣化）を防ぐため、 機能単位のループ・状態管理・implementation-notes.md への記録を担う。 builder エージェントが実装フェーズを開始するときは必ずこのスキルを呼ぶ。
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Build static sites with Nitro CLI - a Python static site generator using nitro-ui for programmatic HTML generation instead of templates
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Creates or adds Convex to an app. Use for new Convex projects, npm create convex@latest, frontend setup, env vars, or the first npx convex dev run.
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Combine React's official "You Might Not Need an Effect" guidance with this project's stricter no direct useEffect stance. Use when writing, reviewing, or refactoring React components that might reach for useEffect, derived state, event relays, reset logic, subscriptions, or client fetching.
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Builds reusable Convex components with isolated tables and app-facing APIs. Use for new components, reusable backend modules, integrations, or component boundary work.
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Build reactive, type-safe, production-grade backends. ALWAYS use this skill when the user asks to build, plan, design, or implement backend features, APIs, data models, server logic, database schemas, web apps, full stack apps, or mobile apps. This includes planning and architecture discussions.
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Reflection-first problem solving methodology for Convex development. Use before implementing any solution to ensure proper root cause analysis, 98% code confidence, and minimal change scope.
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Create Convex queries, mutations, and actions with proper validation, authentication, and error handling. Use when implementing new API endpoints.
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Critical Git safety rules to prevent destructive operations. Use whenever performing git operations, reverting changes, or managing commits. Prevents accidental loss of work.
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openreel-storyboardのMiniMax H3 queueをCLIで検証・生成・監視・復旧する。既存runのstatus、resume、cancelにも使う。
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Kamui MCPでのi2v生成に共通するモデル選択・逐次実行・再開・保存・検査を行う。用途別i2vスキルの実行基盤として使う。
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独立した作業をheadless Cursor CLIへ委任し、一時Sprintで実行・監視・検収する。永続PLANが必要な場合はcursor-agent-delegateを使う。
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