後端開發

SQLiteにおけるインデックス設計戦略の専門知識。 B-Treeインデックス、部分インデックス、式インデックス、カバリングインデックスの特性と選択基準を提供。 Turso + Drizzle ORM環境での実装を前提とする。 Anchors: • Designing Data-Intensive Applications (Martin Kleppmann) / 適用: データモデリング・インデックス設計原則 / 目的: 体系的なインデックス戦略の確立 • SQLite Documentation / 適用: B-Tree実装・クエリプランナー挙動 / 目的: SQLite特有の最適化技法の適用 • Drizzle ORM / 適用: index()構文・マイグレーション / 目的: 型安全なスキーマ定義 Trigger: Use when designing database indexes, analyzing query performance, optimizing read operations, evaluating index candidates, or implementing Drizzle ORM index migrations. Keywords: index, indexing, B-Tree, query performance, SQLite, Drizzle, cardinality, selectivity, covering index, partial index, expression index.

Implement gRPC services in Rails for high-performance microservices. Use when building inter-service communication, streaming APIs, or efficient binary protocol endpoints.

This skill enables Claude to monitor and analyze application error rates to improve reliability. It is used when the user needs to track and understand errors occurring in their application, including HTTP errors, application exceptions, database errors, external API errors, background job errors, and client-side errors. Use this skill when the user asks to "monitor errors", "analyze error rates", "track application errors", or requests help with "error monitoring". It sets up comprehensive error tracking and alerting based on defined thresholds.

Use when creating or updating technical documentation, API documentation, or inline code documentation.

GitHub Actionsワークフローでの安全な秘密情報管理を実現する。 リポジトリ/環境/組織/Dependabotの4種類のシークレット使い分け、OIDCによるクラウド認証、ローテーション、監査を包括的に提供する。 Anchors: • Web Application Security (Andrew Hoffman) / 適用: 脅威モデリング・セキュア設計 / 目的: シークレット管理戦略の基盤 • GitHub Actions Secrets API / 適用: シークレット設定・アクセス制御 / 目的: 各タイプの正確な使い分け • OpenID Connect (OIDC) Specification / 適用: クラウドプロバイダー認証 / 目的: 長期認証情報の排除 Trigger: Use when configuring GitHub Actions secrets, implementing cloud OIDC authentication, rotating secrets, or auditing secret access patterns. GitHub secrets, OIDC, secret rotation, environment secrets, organization secrets, cloud authentication

Restart Claude Code session to reload new skills, manage context, or start fresh. Use this skill when skills have been added/modified, when needing to compact/clear context, or to reload configuration changes.

Node.jsプロセスのライフサイクル管理を専門とするスキル。 Linuxカーネルのプロセス管理思想に基づき、プロセスの生成、実行、 監視、終了までの完全な制御と、シグナル処理、ゾンビプロセス回避を設計します。 Anchors: • The Pragmatic Programmer（Andrew Hunt, David Thomas）/ 適用: プロセス管理 / 目的: 実践的改善と品質維持 Trigger: process lifecycle management, application startup and shutdown control, graceful shutdown implementation, signal handler design, PM2 process management configuration

Your approach to handling backend deployment. Use this skill when working on files where backend deployment comes into play.

Generate comprehensive API endpoint documentation from Bruno (.bru) files by mapping requests to a Django4Lyfe/Diversio-style backend implementation (Django REST Framework or Django Ninja), including auth/permissions, multi-tenant filtering, request/response schemas, and line-numbered code references. Use for single endpoints, directory scans of .bru files, or when writing docs to a specific output path.

Hono/Bun patterns and backend best practices for this project. Use when implementing API endpoints, WebSocket handlers, services, or server-side logic in packages/server.

Domain specialist for API routing, route discovery, middleware analysis, and parameter validation. Scope: route discovery patterns, automatic route detection, route mapping, middleware analysis, URL patterns, parameter validation, URL injection prevention. Excludes: backend business logic, database queries, security operations beyond URL injection, frontend routing. Triggers: "routing", "route", "URL pattern", "middleware", "parameter validation", "route discovery", "endpoint", "path", "slug".

This skill automates the setup of machine learning experiment tracking using tools like MLflow or Weights & Biases (W&B). It is triggered when the user requests to "track experiments", "setup experiment tracking", "initialize MLflow", or "integrate W&B". The skill configures the necessary environment, initializes the tracking server (if needed), and provides code snippets for logging experiment parameters, metrics, and artifacts. It helps ensure reproducibility and simplifies the comparison of different model runs.

Use when you need to test Nix expressions, validate Nix configuration syntax before applying, debug Nix code or understand evaluation results, inspect derivation attributes, or evaluate flake outputs and inputs

MCPサーバーと外部システム間の統合パターン設計。同期・非同期通信、イベント駆動アーキテクチャ、データ同期パターンの設計指針を提供します。 Anchors: • Enterprise Integration Patterns (Hohpe/Woolf) / 適用: パターン選択・設計 / 目的: スケーラブルな連携設計 • Designing Data-Intensive Applications (Kleppmann) / 適用: 非同期・イベント駆動 / 目的: 分散システムの信頼性 • The Pragmatic Programmer / 適用: 実装品質 / 目的: 実践的な改善 Trigger: Use when designing system integration, API connectivity, service communication, async processing, or event-driven architecture. integration patterns, mcp server, async communication, event-driven, message queue, api integration

Automatically save and restore development context to minimize cognitive load when resuming work. Use when switching tasks, taking breaks, or returning after interruptions. Captures mental state, file locations, and next steps. Designed for ADHD developers with high context-switching costs.

This skill helps you scan your codebase for exposed secrets and credentials. It uses pattern matching and entropy analysis to identify potential security vulnerabilities such as API keys, passwords, and private keys. Use this skill when you want to proactively identify and remediate exposed secrets before they are committed to version control or deployed to production. It is triggered by phrases like "scan for secrets", "check for exposed credentials", "find API keys", or "run secret scanner".

Use when creating or modifying domain entities with static expressions, computed properties, field tracking, and validation.

Backend standards for modern TypeScript applications covering Convex, Supabase, Drizzle ORM, Stripe, tRPC, and API design patterns. Load when implementing server-side code, database schemas, or API endpoints.

This skill helps you scan your codebase for exposed secrets and credentials. It uses pattern matching and entropy analysis to identify potential security vulnerabilities such as API keys, passwords, and private keys. Use this skill when you want to proactively identify and remediate exposed secrets before they are committed to version control or deployed to production. It is triggered by phrases like "scan for secrets", "check for exposed credentials", "find API keys", or "run secret scanner".

This skill helps you scan your codebase for exposed secrets and credentials. It uses pattern matching and entropy analysis to identify potential security vulnerabilities such as API keys, passwords, and private keys. Use this skill when you want to proactively identify and remediate exposed secrets before they are committed to version control or deployed to production. It is triggered by phrases like "scan for secrets", "check for exposed credentials", "find API keys", or "run secret scanner".