Development

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Codex needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas

Automatically builds and tests code changes. Use whenever code is modified, tests fail, before creating pull requests, or when verifying code quality.

Select appropriate Segoe MDL2 Assets icons for WinUI Windows applications. Use when the user needs an icon for their WinUI app UI, asks for icon recommendations, needs a glyph for a button or control, or wants to find icons by visual appearance or use case. Provides Unicode points and icon names with visual descriptions and creative alternatives.

Store project-specific insights and context into file-based memory. Use after completing tasks that reveal important details about THIS codebase. Use when user says "--project-store" or "--learn" (you decide which scope, may use both) or after discovering project-specific patterns. Skip for universal patterns (use coder-memory-store) or routine work.

Frappe server-side Python patterns for controllers, document events, whitelisted APIs, background jobs, and database operations. Use when writing controller logic, creating APIs, handling document events, or processing data on the server.

Develop Clojure applications using deps.edn, tools.deps, and functional patterns. Activate when working with .clj/.cljc/.cljs files, deps.edn, or user mentions Clojure, REPL, spec, transducers, reducers, or functional programming.

Expert knowledge for writing cutting-edge, idiomatic Rust code with Rust Edition 2024, strict clippy compliance, and functional-but-pragmatic philosophy. Use when writing any Rust code, fixing clippy warnings, structuring modules or crates, reviewing or refactoring Rust code, or questions about Rust 2024 features, async patterns, documentation standards, or performance optimization.

Build production-ready Next.js 16 + Supabase authentication and role-based access control systems with 4-tier user roles (admin, main_user, vip_user, user). Use this skill when implementing authentication, user management, role-based permissions, or RLS policies in Next.js projects.

This skill should be used when the user asks to "create a Next.js app", "build a page", "add routing", "implement server components", "add caching", "create API routes", "use server actions", "add metadata", "set up layouts", or discusses Next.js architecture, App Router, data fetching, or rendering strategies. Always use the latest Next.js version and modern patterns.

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui)

VioletConnect core features - merchant onboarding application architecture

Systematic approach to gathering book research including source evaluation, citation formatting, fact-checking, and research organization. Use when conducting research, evaluating sources, or managing citations.

Build modular CLI applications with Cobra framework. Use when structuring CLI commands, implementing modular command architecture, handling flags and arguments, or when user mentions Cobra, CLI modularity, command registration, or spf13/cobra.

Determines project type from context to configure analysis thresholds.Checks prompt, scans documents, or asks user if type cannot be inferred.Outputs project_type for use by python-plan-optimization skill.

Executes database migrations using the postgres MCP server. Use when applying schema changes, running migrations, or updating database structure.

Alfred SuperAgent의 필수 규칙을 정의합니다. November 2025 enterprise standard 기반. 3-Layer architecture, 4-Step workflow, Agent-first paradigm, Skill invocation rules, AskUserQuestion patterns, TRUST 5 quality gates, TAG chain integrity, commit message standards. 사용: 워크플로우 규칙 검증, 품질 게이트 확인, MoAI-ADK 표준 준수, 아키텍처 규칙 검증.

Prevent request timeouts in Claude Code sessions by chunking long operations, implementing progress checkpoints, using background processes, and optimizing tool usage patterns. Use when performing bulk operations, processing large datasets, running long-running commands, downloading multiple files, or executing tasks that exceed 2-minute timeout limits. Implements strategies like task decomposition, incremental processing, parallel execution, checkpoint-resume patterns, and efficient resource management to ensure reliable completion of complex workflows.

Sets up comprehensive GitHub Actions CI/CD workflows for modern web applications. This skill should be used when configuring automated lint, test, build, and deploy pipelines, adding preview URL comments on pull requests, or optimizing workflow caching. Use when setting up continuous integration, deployment automation, GitHub Actions, CI/CD pipeline, preview deployments, or workflow optimization.

Load when creating tutorials, explaining technical concepts, writing documentation,or any content that involves code, data, or technical procedures. Containsguidelines for clear, effective technical communication based on Google'stechnical writing principles.

Use when designing animations for travel booking, hospitality apps, tourism platforms, or vacation planning experiences