Data Science

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.

Systematic analysis framework for articles, papers, and long-form content using 5 proven thinking models (McKinsey Communication Framework, Comprehensive Task Checklist, Critical Thinking, Inversion Thinking, Systems Thinking).

Multiagent AI system for scientific research assistance that automates research workflows from data analysis to publication. This skill should be used when generating research ideas from datasets, developing research methodologies, executing computational experiments, performing literature searches, or generating publication-ready papers in LaTeX format. Supports end-to-end research pipelines with customizable agent orchestration.

Guide parsing of Cassandra 5.0+ SSTable components (Data.db, Index.db, Statistics.db, Summary.db, TOC) with compression support (LZ4, Snappy, Deflate). Use when working with SSTable files, binary format parsing, hex dumps, compression issues, offset calculations, BTI index, partition layout, or debugging parsing errors.

WHEN: Test code generation, unit/integration/E2E test writing, component/hook/utility testsWHAT: Framework detection + Jest/Vitest/RTL/Playwright templates + Happy Path/Edge/Error case testsWHEN NOT: Coverage analysis → coverage-analyzer, Test quality review → code-reviewer

Guide for using Microsoft MarkItDown - a Python utility for converting files to Markdown. Use when converting PDF, Word, PowerPoint, Excel, images, audio, HTML, CSV, JSON, XML, ZIP, YouTube URLs, EPubs, Jupyter notebooks, RSS feeds, or Wikipedia pages to Markdown format. Also use for document processing pipelines, LLM preprocessing, or text extraction tasks.

Improve existing agent skills based on user feedback and best practices. Use when the user wants to fix, enhance, or refactor an existing skill. Gathers user feedback first, then applies technical analysis and implements improvements.

Debug bugs and errors using intel-first approach with systematic root cause analysis. Use proactively when errors occur, tests fail, or unexpected behavior appears. MUST trace from symptom to root cause with CoD^Σ reasoning.

Use when creating or updating Energize Denver compliance proposals including benchmarking, energy audits, compliance pathways, and performance target analysis. Handles proposal generation from template, cost estimation based on building size and service type, timeline planning, and compliance verification against Denver Article XIV requirements for commercial and multifamily buildings (project)

Elite debugging and error-resolution system optimized for Next.js/TypeScript/Supabase stacks. Use when encountering ANY error, bug, or unexpected behavior including API failures, database issues, build errors, runtime crashes, logic bugs, performance problems, or deployment issues. Specializes in cryptic webpack errors, Supabase RLS policies, vector database mismatches, module resolution, API cascades, and multi-error triage. Provides rapid root cause analysis + ranked solution approaches + explanatory insights. Trigger on error messages, stack traces, "why isn't this working", "something's broken", debugging requests, or troubleshooting needs.

QA best practices and test design patterns. Use when designing test cases to ensure comprehensive coverage with equivalence partitioning, boundary analysis, and accessibility testing.

Use this skill to query your Google NotebookLM notebooks directly from Claude Code for source-grounded, citation-backed answers from Gemini. Browser automation, library management, persistent auth. Drastically reduced hallucinations through document-only responses.

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

WHEN: Android Kotlin code review, Jetpack Compose patterns, Coroutines/Flow checks, ViewModel structure analysisWHAT: Compose best practices + Coroutines patterns + State management + Memory leak detection + Performance optimizationWHEN NOT: KMP shared code → kotlin-multiplatform-reviewer, Backend → kotlin-spring-reviewer

Masked arrays for robust handling of missing or invalid data, ensuring they are excluded from statistical and mathematical computations. Triggers: masked array, numpy.ma, missing data, invalid values, hard mask.

Perform SQL joins and multi-table analysis on DST data in DuckDB. Use whenresearch requires combining multiple tables on common dimensions (time, region).Provides patterns for common DST dimension joins and multi-table comparisons.

Real-time collection and analysis of Claude Skills examples from multiple sources including GitHub repositories, blog posts, documentation, and community discussions. Use this skill when the user requests to gather examples, use cases, best practices, or implementation patterns for Claude Skills. Generates comprehensive markdown reports summarizing collected examples.

Use when investigating config file discrepancies during audit. Spawns config agents in waves to compare template standards against actual files. READ-ONLY analysis - agents report findings but make no changes.

Validate feature implementations against DevPortfolio Clean Architecture standards and coding guidelines. Use when asked to review code, validate implementations, check coding standards, or assess code quality. Generates comprehensive validation reports with compliance scoring, layer-by-layer analysis, and prioritized action items.

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 | Sử dụng khi: tạo Excel, bảng tính, công thức, phân tích dữ liệu