docx
Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks
pptx
Presentation creation, editing, and analysis. When Claude needs to work with presentations (.pptx files) for: (1) Creating new presentations, (2) Modifying or editing content, (3) Working with layouts, (4) Adding comments or speaker notes, or any other presentation tasks
xlsx
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude 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
repomix
Package entire code repositories into single AI-friendly files using Repomix. Capabilities include pack codebases with customizable include/exclude patterns, generate multiple output formats (XML, Markdown, plain text), preserve file structure and context, optimize for AI consumption with token counting, filter by file types and directories, add custom headers and summaries. Use when packaging codebases for AI analysis, creating repository snapshots for LLM context, analyzing third-party libraries, preparing for security audits, generating documentation context, or evaluating unfamiliar codebases.
shopify
Build Shopify applications, extensions, and themes using GraphQL/REST APIs, Shopify CLI, Polaris UI components, and Liquid templating. Capabilities include app development with OAuth authentication, checkout UI extensions for customizing checkout flow, admin UI extensions for dashboard integration, POS extensions for retail, theme development with Liquid, webhook management, billing API integration, product/order/customer management. Use when building Shopify apps, implementing checkout customizations, creating admin interfaces, developing themes, integrating payment processing, managing store data via APIs, or extending Shopify functionality.
media-processing
Process multimedia files with FFmpeg (video/audio encoding, conversion, streaming, filtering, hardware acceleration) and ImageMagick (image manipulation, format conversion, batch processing, effects, composition). Use when converting media formats, encoding videos with specific codecs (H.264, H.265, VP9), resizing/cropping images, extracting audio from video, applying filters and effects, optimizing file sizes, creating streaming manifests (HLS/DASH), generating thumbnails, batch processing images, creating composite images, or implementing media processing pipelines. Supports 100+ formats, hardware acceleration (NVENC, QSV), and complex filtergraphs.
effect-best-practices
Enforces Effect-TS patterns for services, errors, layers, and atoms. Use when writing code with Effect.Service, Schema.TaggedError, Layer composition, or effect-atom React components.
tdd-workflow
Use this skill when writing new features, fixing bugs, or refactoring code. Enforces test-driven development with 80%+ coverage including unit, integration, and E2E tests.
domain-driven-design
This skill should be used whenever domain modeling is taking place. It provides specialized guidance for type-driven and data-driven design based on Rich Hickey and Scott Wlaschin's principles. The skill helps contextualize current modeling within the existing domain model, identifies inconsistencies, builds ubiquitous language, and creates visualizations (Mermaid, Graphviz/DOT, ASCII diagrams) to communicate domain concepts clearly. Use this skill when designing types, modeling business domains, refactoring domain logic, or ensuring domain consistency across a codebase.
guitar-fretboard
Create interactive guitar fretboard visualizations for scales, chords, CAGED system, triads, intervals, and note positions. Use this skill when users ask to build guitar learning tools, visualize scales/modes/pentatonics on the fretboard, show chord shapes, display CAGED patterns, create interval diagrams, or build any guitar theory visualization as React artifacts. Supports standard tuning, custom tunings, and comprehensive music theory for guitar.
frontend-performance-reviewer
Use when reviewing React/frontend code for performance issues, before optimization work, when page load is slow (>3s), when users report UI lag, or when preparing production deployments requiring performance validation
game-design-theory
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game-feel
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godot
This skill should be used when working on Godot Engine projects. It provides specialized knowledge of Godot's file formats (.gd, .tscn, .tres), architecture patterns (component-based, signal-driven, resource-based), common pitfalls, validation tools, code templates, and CLI workflows. The `godot` command is available for running the game, validating scripts, importing resources, and exporting builds. Use this skill for tasks involving Godot game development, debugging scene/resource files, implementing game systems, or creating new Godot components.
guitar-fretboard-mastery
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level-design
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threejs-scene-builder
Comprehensive Three.js and React Three Fiber skill for creating 3D scenes, characters, NPCs, procedural generation, animation retargeting, and interactive experiences. Use when user asks to "create Three.js scene", "setup React Three Fiber", "add 3D character", "create NPC AI", "procedural 3D generation", "retarget animation", "setup avatar system", or "create 3D game".
solito
This skill should be used when working on Solito projects (Expo + Next.js with shared navigation). It provides specialized knowledge for cross-platform navigation, monorepo structure, shared component patterns, platform-specific code handling, and common pitfalls. Use this skill when building universal apps, implementing navigation, creating shared UI components, or debugging cross-platform issues.
valdi
This skill should be used when working on Valdi framework projects. Valdi is Snapchat's cross-platform UI framework that compiles TypeScript/TSX components into native views for iOS, Android, and macOS. It provides specialized knowledge for component architecture, Bazel build system, native bindings, TSX elements, and cross-platform development. Use this skill when implementing Valdi components, debugging build issues, or creating new Valdi projects.
visual-debugger
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security-review
Use this skill when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features. Provides comprehensive security checklist and patterns.
bevy
This skill should be used when working on Bevy game engine projects. It provides specialized knowledge for Bevy's Entity Component System (ECS) architecture, component-driven design patterns, system ordering, UI development, build strategies, and common pitfalls. Use this skill when implementing game features, debugging Bevy code, designing component architectures, or working with Bevy's UI system.
flutter-tester
Use when creating, writing, fixing, or reviewing tests in a Flutter project. Covers unit tests, widget tests, integration tests, Riverpod provider testing, and Mockito mocking. Provides Given-When-Then patterns, layer isolation strategies, and test setup for GetIt, SharedPreferences, and FakeDatabase.
owasp-mobile-security-checker
Use when performing security audits, vulnerability assessments, or compliance checks on Flutter or mobile applications. Covers OWASP Mobile Top 10 (2024) — hardcoded secrets (M1), insecure storage (M9), weak cryptography (M10), network issues (M5), and 6 more categories with automated scanners and remediation guidance.
changelog
Write changelog entries for Hugging Face Hub features. Use when asked to write a changelog, create a changelog entry, or document a new feature/PR for hf.co/changelog. Triggers on "write changelog", "changelog entry", "document this PR/feature for changelog".
mcp-cli
Interface for MCP (Model Context Protocol) servers via CLI. Use when you need to interact with external tools, APIs, or data sources through MCP servers.
gentleman-bubbletea
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gentleman-e2e
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gentleman-installer
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gentleman-system
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gentleman-trainer
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go-testing
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bgproc
Manage background processes like dev servers. Use when you need to start, stop, or check status of long-running processes.
skills-scout
Use when a user wants you to discover and optionally install new agent skills for a task, and you must get explicit consent before any global install into Codex.
gemini-embeddings
Generate text embeddings using Gemini Embedding API via scripts/. Use for creating vector representations of text, semantic search, similarity matching, clustering, and RAG applications. Triggers on "embeddings", "semantic search", "vector search", "text similarity", "RAG", "retrieval".
gemini-files
Upload and manage files using Google Gemini File API via scripts/. Use for uploading images, audio, video, PDFs, and other files for use with Gemini models. Supports file upload, status checking, and file management. Triggers on "upload file", "file API", "upload image", "upload PDF", "upload video", "file management".
gemini-image
Generate images using Google Gemini and Imagen models via scripts/. Use for AI image generation, text-to-image, creating visuals from prompts, generating multiple images, custom aspect ratios, and high-resolution output up to 4K. Triggers on "generate image", "create image", "imagen", "text to image", "AI art", "nano banana".
gemini-text
Generate text content using Google Gemini models via scripts/. Use for text generation, multimodal prompts with images, thinking mode for complex reasoning, JSON-formatted outputs, and Google Search grounding for real-time information. Triggers on "generate with gemini", "use gemini for text", "AI text generation", "multimodal prompt", "gemini thinking mode", "grounded response".
gemini-tts
Generate speech from text using Google Gemini TTS models via scripts/. Use for text-to-speech, audio generation, voice synthesis, multi-speaker conversations, and creating audio content. Supports multiple voices and streaming. Triggers on "text to speech", "TTS", "generate audio", "voice synthesis", "speak this text".
gemini-batch
Process large volumes of requests using Gemini Batch API via scripts/. Use for batch processing, bulk text generation, processing JSONL files, async job execution, and cost-efficient high-volume AI tasks. Triggers on "batch processing", "bulk requests", "JSONL", "async job", "batch job".
ai-engineering-gauntlet
Evidence-driven AI coding practices inspired by Robert C. Martin's specification-first, TDD, architecture, metrics, mutation testing, and adversarial verification workflow. Use when planning, implementing, reviewing, or refactoring software with AI agents, especially when correctness must be demonstrated rather than assumed. Also use to create implementation-ready documentation for a feature, bug fix, refactor, integration, or migration: behavioral contract, PRD, stories, acceptance criteria, sprint backlog, test plan, Definition of Done, and code-review checklist.
design-system-spec
Author, validate, export, and apply DESIGN.md files — a self-contained, plain-text representation of a design system. Use to create or refine a design system document, convert tokens to/from tokens.json, Figma variables, or Tailwind theme configs, or produce a DESIGN.md. Also use to enforce an existing docs/design/DESIGN.md when creating, editing, reviewing, or refactoring frontend code (layout, styling, themes, tokens, components, responsive behavior, visual states).
product-ui-engineer
Design and implement distinctive, production-grade frontends with Next.js, React, Tailwind CSS, shadcn/ui, and Lucide. Use for pages, dashboards, SaaS apps, landing pages, admin panels, product interfaces, component systems, redesigns, and UI polishing where strong visual quality, mobile-first UX, accessibility, responsive behavior, and a non-generic human-designed feel are required.
ux-cognitive-laws
Audita e implementa melhorias de UX em frontends usando as leis de Fitts, Hick, Jakob e Miller e os efeitos Zeigarnik, Goal-Gradient e Von Restorff. Use para melhorar usabilidade, fluxos, formulários, onboarding, navegação, CTAs, dashboards e conversão em React, Next.js, Vue, Nuxt, Angular, Svelte ou HTML/CSS. Não use para tarefas exclusivamente de backend ou mudanças sem interface.
running-marketing-campaigns
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crossmint-knowledge
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openrouter
Use this skill when the user wants to call different LLM models through OpenRouter's unified API, compare model responses, track costs and response times, or find the best model for a task. Triggers include requests to test models, benchmark performance, use specific providers (OpenAI, Anthropic, Google, etc.), or optimize for speed/cost.
writing-skills
Use when creating new skills, editing existing skills, or verifying skills work before deployment
dispatching-parallel-agents
Dispatches one subagent per independent domain to parallelize investigation/fixes. Use when you have 2+ unrelated failures (e.g., separate failing test files, subsystems, bugs) with no shared state or ordering dependencies.
executing-plans
Disciplined plan execution for implementation tasks. Use when executing a saved implementation plan, following step-by-step instructions from a plan document.
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