Data Science

Perform statistical hypothesis testing, regression analysis, ANOVA, and t-tests with plain-English interpretations and visualizations.

Component skill for systematic SQL query development in DataPeeker analysis sessions

Create an autonomous agent reasoning from a specific persona's perspective. Use when: (1) asked to spawn agent with specific expertise, (2) work requires multi-step analysis from one perspective, (3) parallel analysis from different perspectives needed, (4) persona judgment needed throughout complex process.

Comprehensive performance analysis and optimization for Justice Companion: React rendering, SQLite query performance, bundle size analysis, memory leak detection. Use when debugging slow UI, optimizing database queries, or reducing app footprint.

Core Dump Analysis skill for the ikigai project

Thermodynamic foundations for distributed systems design. Use when analyzing energy flows, EROEI calculations, autopoietic closure, or validating economic models against physical constraints. Triggers: energy economics, thermodynamic analysis, EROEI, autopoiesis, Energy Seneca, heterotroph/autotroph analysis, network energy costs, Fourth Transition concepts.

Production-grade C++ testing expertise including unit testing, mocking, TDD, BDD, fuzzing, benchmark testing, coverage analysis, and CI integration.

Analyze control flow, concurrency models, and event architectures in agent frameworks. Use when (1) understanding async vs sync execution patterns, (2) classifying execution topology (DAG/FSM/Linear), (3) mapping event emission and observability hooks, (4) evaluating scalability characteristics, or (5) comparing execution models across frameworks.

Use when facing 3+ independent tasks that can be completed without shared state or dependencies - dispatches multiple agents to work concurrently on summarization, investigation, implementation, or analysis

Master Excel for data analysis with pivot tables, formulas, Power Query, and advanced Excel techniques.

Perform fine-grained semantic relationship analysis; use when asked to compare meaning, resolve ambiguity, or map concepts.

Analyze datasets, generate charts, and create summary reports. Use when the user needs to work with CSV, Excel, or other tabular data formats for analysis or visualization.

Extract and analyze metadata from NetCDF files. Use this skill when working with NetCDF (.nc) or CDL (.cdl) files to extract variable information, dimensions, attributes, and data types to CSV format for documentation and analysis.

Component skill for creating effective visualizations (terminal-based and image-based) in DataPeeker analysis sessions

Gracefully change direction when new information emerges or initial thinking proves inadequate, modeling productive revision as intellectual honesty. Use when: (1) asked to revise thinking when presented with contradicting information, (2) analysis contradicts earlier reasoning or new information contradicts assumptions, (3) implementation requires increasingly complex workarounds revealing design flaws, (4) arguments shift from investigating truth to justifying positions.

This skill should be used when analyzing weekly price charts for stocks, stock indices, cryptocurrencies, or forex pairs. Use this skill when the user provides chart images and requests technical analysis, trend identification, support/resistance levels, scenario planning, or probability assessments based purely on chart data without consideration of news or fundamental factors.

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes - four-phase framework (root cause investigation with quantitative tracking, pattern analysis, hypothesis testing, implementation) that ensures understanding before attempting solutions

PostgreSQL database optimization combining institutional knowledge with live analysis

Rapid task execution without hesitation or deterrence. Expert in overcoming blockers, making quick decisions, and maintaining forward momentum. Use for urgent tasks, breaking through impediments, decisive action. Activates on 'swift', 'execute quickly', 'undeterred', 'overcome blocker', 'just do it'. NOT for strategic planning, careful analysis, or research tasks.

Complete PRD (Product Requirements Document) creation workflow that guides users from initial idea to implementation-ready specification using the integrated toolset in this repository. Handles everything from brainstorming and market analysis to technical requirements and team coordination.