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
youtube-transcript
Download YouTube video transcripts when user provides a YouTube URL or asks to download/get/fetch a transcript from YouTube. Also use when user wants to transcribe or get captions/subtitles from a YouTube video.
skill-creator
Guide for creating effective skills for AI coding agents. Use when creating a new skill or updating an existing skill that extends agent capabilities with specialized knowledge, workflows, or tool integrations.
agent-creator
Create custom Task subagents in ~/.claude/agents/. Use when defining new agents for Task tool delegation.
batch-operations
Use when performing 3+ similar operations like file edits, searches, or git operations. Triggers on repetitive tasks, "do the same for", loop-like patterns. Enables parallel tool calls and batch-editor delegation.
browser-automation
Browser automation via Puppeteer MCP for JS-rendered content
code-smell-detection
Use when reviewing code quality, before refactoring, when complexity increases, when code feels "hard to change", during code review, or when onboarding to unfamiliar code - systematic identification of code smells with specific refactoring recipes
command-creator
Create slash commands for user-initiated workflows. Use when building repeatable /name commands for Claude Code.
git-workflow
Use when starting feature work that needs isolation, or when completing work and deciding how to integrate - covers full worktree lifecycle from setup through merge/PR/discard
hook-creator
Create native Claude Code hooks in ~/.claude/hooks/. Use when adding event-triggered automation (PreToolUse, PostToolUse, Stop, etc.).
incremental-implementation
Use when building multi-day features, avoiding long-lived branches, features taking >1 day, changes touching multiple systems, or high-risk changes needing gradual rollout - break features into deployable increments that each provide value
mcp-cli
On-demand MCP server access via CLI without adding to settings.json. Use when exploring MCP server capabilities before installing, making one-off calls, testing MCP servers during development, or avoiding context pollution from rarely-used servers.
memory-management-optimization
Debug memory leaks, profile memory usage, optimize allocations. Use when heap grows unexpectedly, OOM errors occur, or profiling shows memory bottleneck. Covers C++ (Valgrind, ASAN, RAII), Python (tracemalloc, objgraph), and general patterns.
multi-llm
Route tasks to optimal LLM provider (Gemini, Codex, Copilot, Claude)
Comprehensive PDF manipulation toolkit for extracting text/tables, creating PDFs, merging/splitting, and handling forms.
receiving-code-review
Process external code review feedback systematically. Use when responding to PR comments, review feedback, or technical suggestions from reviewers.
skill-creator
Create skills that extend Claude with specialized knowledge and workflows. Use when Claude needs to learn a methodology or approach.
subagent-driven-development
Use when executing implementation plans with independent tasks in the current session or facing 3+ independent issues that can be investigated without shared state or dependencies - dispatches fresh subagent for each task with code review between tasks, enabling fast iteration with quality gates
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior (including race conditions, deadlocks, concurrency issues) - four-phase framework (root cause investigation, pattern analysis, hypothesis testing, implementation) with specialized techniques for deep call stack tracing and concurrency debugging
test-driven-development
Use when implementing any feature or bugfix, adding tests, fixing flaky tests, refactoring, or changing behavior. Default approach for new features, bug fixes. Exceptions only for throwaway prototypes or generated code. Covers TDD workflow (red-green-refactor), condition-based waiting for async tests, and testing anti-patterns to avoid.
using-tmux
Control interactive CLI tools that require a real terminal via tmux send-keys. Use for git rebase -i, git add -p, vim, nano, Python/Node REPLs, or any command that hangs waiting for terminal input.
verification-before-completion
Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidence before assertions always
ucf-hit-it-executor
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ai-code-generator
AI-powered code generation for boilerplate, tests, data, and scaffolding
api-documentor
Generates OpenAPI/Swagger/GraphQL documentation and SDKs from code
codebase-navigator
Fast repository comprehension and safer edits through structured exploration
code-formatter
Multi-language code formatting and style enforcement with automatic linting fixes
container-validator
Dockerfile best practices, Kubernetes manifest validation, container security
database-migrator
Schema version control, migration script generation, rollback management
dependency-guardian
Automated dependency management with security scanning, update orchestration, and compatibility validation
documentation-sync
Detects code/documentation drift, validates examples, generates diagrams, auto-updates documentation
finops-optimizer
Cloud cost optimization and FinOps analysis across AWS, Azure, and GCP
incident-triage
Faster on-call handoffs and better postmortems with triage SOPs
memory-hygiene
Maintains memory cleanliness with deduplication, validation, and expiration
performance-profiler
CPU/memory profiling, database query optimization, and performance analysis
pr-author-reviewer
Raise PR quality with templates, checklists, and security reviews
release-orchestrator
End-to-end release automation with semantic versioning, changelog generation, and multi-environment deployment
security-scanner
Comprehensive security scanning for SAST, secrets, OWASP vulnerabilities, container and IaC security
semantic-search
Natural language code search, pattern detection, semantic code analysis
tech-debt-tracker
Automated technical debt identification, tracking, and prioritization system
test-first-change
Reduce regressions by discovering tests, running them, then editing code
claude-code-hooks
Guide for implementing Claude Code hooks - automated scripts that execute at specific workflow points. Use when building hooks, understanding hook events, or troubleshooting hook configuration.
claude-hooks-sdk
Expert guide for building Claude Code hooks using the claude-hooks-sdk npm package. Use when implementing TypeScript hooks with HookManager, Logger, transforms, context tracking, or troubleshooting SDK features.
epistemic-cognitive-guardrails
Discipline epistemique stricte pour eliminer les derives cognitives de Claude. Activation SYSTEMATIQUE sur TOUTES les conversations. Impose: (1) Zero invention/supposition, (2) Honnetete absolue, (3) Vision holistique avec relecture du contexte, (4) Questions plutot que suppositions, (5) Remise en contexte perpetuelle avec checkpoints structures, (6) Documentation incrementielle sans doublons, (7) Vigilance workflow/CI-CD/securite, (8) TODO/plan obligatoire avant tout travail, (9) Documentation FR/EN scholar style signee Julien GELEE, (10) Zero credentials/API keys/donnees sensibles en clair. Posture ingenieur generaliste specialise IA.
security-first-methodology
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search-articles
Query articles using category filters and BM25 keyword search
article-cover
Generate professional article cover images as SVG files. Use when user wants to create cover/banner images for blog posts, technical articles, or documentation. Creates visually appealing covers with titles, diagrams, and tech-themed graphics.
codex
Execute Codex CLI for code generation, analysis, web search and web fetch. Two capabilities - (1) Code Generation with deep reasoning, (2) Web Search & Fetch for online research.
excalidraw
Generate hand-drawn style diagrams (architecture, flowcharts, system design) as .excalidraw.json files. Use when user wants diagrams, mentions Excalidraw, or needs Mermaid-to-visual conversion.
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.
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