Backend

Slackチャンネルにフォーマット済みメッセージを送信するSkill。「Slackに通知して」「チームに連絡して」「#channelに投稿して」などのリクエストで自動発火する。MCP連携（フルAPI）とWebhookフォールバック（送信のみ）の両方に対応。

Comprehensive Symfony 6.4 development skill for web applications, APIs, and microservices.

Install and configure Node.js, npm, and pnpm using nvm. Use when setting up a Node.js environment.

Write focused tests for core user flows and critical business logic, testing behavior rather than implementation, with clear names and fast execution. Use this skill when writing unit tests, integration tests, or end-to-end tests. When testing critical user workflows and primary application features. When creating tests that focus on what code does rather than how it does it. When mocking external dependencies like databases, APIs, or file systems. When naming tests to clearly describe the scenario and expected outcome. When keeping tests fast and independent. When completing feature implementation and adding strategic tests at logical completion points. When working with test files or test frameworks.

Use this skill when documenting significant architectural decisions. Provides ADR templates following the Nygard format with sections for context, decision, consequences, and alternatives. Helps teams maintain architectural memory and rationale for backend systems, API designs, database choices, and infrastructure decisions.

Restore a project from 99-archive, a remote git repo, or a local codebase back to the workspace root, including reconstructing missing docs, stages, and sprints. Use when the user asks to resume work on an existing project.

Clean Architecture principles for Modular Monolith with bounded contexts and minimal shared kernel. **ALWAYS use when working on backend code, ESPECIALLY when creating files, deciding file locations, or organizing contexts (auth, tax, bi, production).** Use proactively to ensure context isolation and prevent "Core Obesity Syndrome". Examples - "create entity", "add repository", "where should this file go", "modular monolith", "bounded context", "shared kernel", "context isolation", "file location", "layer organization".

Claude Code architecture advisor. Classifies knowledge and delegates to appropriate skills. Use when deciding where to put new knowledge or restructuring components.

Search and retrieve information from Graphiti Memory graph database. Coverssearch_memory_facts, search_memory_nodes, query construction, and group filtering.Use when user mentions Graphiti search, memory retrieval, finding past work,searching knowledge graph, or querying episodic memory.

Implement real-time data streaming with Server-Sent Events (SSE), WebSockets, and ReadableStream APIs. Master backpressure handling, reconnection strategies, and LLM streaming for 2025+ real-time applications.

Clone external repositories into work/ directory for examination and source code research. Use when needing to understand third-party dependency implementations, debug upstream issues, or research API usage patterns. (project)

Backend engineering with Modular Monolith, bounded contexts, and Hono. **ALWAYS use when implementing ANY backend code within contexts, Hono APIs, HTTP routes, or service layer logic.** Use proactively for context isolation, minimal shared kernel, and API design. Examples - "create API in context", "implement repository", "add use case", "context structure", "Hono route", "API endpoint", "context communication", "DI container".

Multi-perspective decision support using three AI agents (Scientist, Mother, Realist). Use when facing difficult decisions, trade-offs, comparing alternatives, choosing between options, or when unsure which approach is best. Triggers on questions like "should I", "which is better", "pros and cons", "normalize vs denormalize", "microservices vs monolith", or any technical/architectural decision with multiple valid options.

To run JavaScript in the page context, evaluate an expression on the page or a specific element for inspection or manipulation.

Scan the codebase for potential secret leaks including API keys, tokens, passwords, hardcoded project IDs, and sensitive identifiers. Use when the user says "check for secrets", "scan for leaks", "security check", or before committing sensitive changes.

Enterprise-grade browser automation using WebDriver protocol. Use when the user needs to automate web browsers, perform web scraping, test web applications, fill forms, take screenshots, monitor performance, or execute multi-step browser workflows. Supports Chrome, Firefox, and Edge with connection pooling and health management.

Write safe context expressions in Claude Code slash command files. Coversbacktick expressions, find vs ls patterns, and commands that always exit 0.Use when creating slash commands, writing context sections with backtickexpressions, or debugging command execution failures.

Define database models with clear naming, appropriate data types, proper constraints, and relationship definitions. Use this skill when creating or modifying ORM model files, database entity definitions, or data structure schemas. When defining table relationships, foreign keys, and cascade behaviors. When implementing model validation rules, timestamps, or indexes. When working with model files in frameworks like SQLAlchemy, Sequelize, ActiveRecord, SQLx, Prisma, or similar ORMs. When choosing appropriate data types for columns or establishing data integrity constraints (NOT NULL, UNIQUE, foreign keys).

GitHub Actions security and authentication for Claude Code including API keys, OIDC, AWS Bedrock, Google Vertex AI, secrets management, and permission scoping. Use when setting up authentication or discussing security for GitHub Actions workflows.

ArgoCD CLI authentication with SSO. Provides argocd login command, gRPC-Webconfiguration, and post-login operations. Use when user mentions ArgoCD login,argocd authentication, SSO auth, or accessing ArgoCD applications and clusters.