Research

Design and analyze A/B tests, calculate statistical significance, and determine sample sizes for conversion optimization and experiment validation

Create comprehensive API reference documentation with OpenAPI/Swagger specs, REST endpoints, authentication, examples, and SDKs. Use when documenting REST APIs, GraphQL APIs, endpoint documentation, or OpenAPI specifications.

Four-phase debugging framework - root cause investigation, pattern analysis, hypothesis testing, implementation. Ensures understanding before attempting fixes.

Conduct statistical tests including t-tests, chi-square, ANOVA, and p-value analysis for statistical significance, hypothesis validation, and A/B testing

Gate 0 research phase for pre-dev workflow. Dispatches 3 parallel research agents to gather codebase patterns, external best practices, and framework documentation BEFORE creating PRD/TRD. Outputs research.md with file:line references.

Multi-model AI consultation and research. Supports CONSULTATION MODE (ask single expert), RESEARCH MODE (parallel multi-agent), or DELIBERATION MODE (agents debate and refine). USE WHEN user says 'ask gemini', 'consult codex' (consultation), 'do research' (research), or 'deliberate on' (deliberation).

Patterns and structure for writing API reference documentation including endpoint descriptions, request/response schemas, and error documentation.

Discover patterns, distributions, and relationships in data through visualization, summary statistics, and hypothesis generation for exploratory data analysis, data profiling, and initial insights

Create detailed user personas based on research and data. Develop realistic representations of target users to guide product decisions and ensure user-centered design.

Proactive requirements gathering - systematically interviews the user to uncover ambiguities, preferences, and constraints BEFORE implementation begins.

Technical writing specialists for functional and API documentation. Dispatch when you need to create guides, conceptual docs, or API references following established documentation standards.

Analyze user research data to uncover insights, identify patterns, and inform design decisions. Synthesize qualitative and quantitative research into actionable recommendations.

10 pre-dev workflow skills + 3 research agents organized into Small Track (4 gates, <2 days) and Large Track (9 gates, 2+ days) for systematic feature planning with research-first approach.

Generate LaTeX documents and compile them to PDF for publication-quality reports. Use when creating academic papers, scientific reports, mathematical documents, or professionally typeset PDF reports with equations and references.

Create static visualizations including bar charts, line plots, pie charts, and more. Use when generating charts for reports, creating data visualizations, producing publication-quality figures, or embedding plots in PDF/HTML reports.

Matplotlib library for creating financial visualizations. Use for plotting time series, creating multi-panel figures, stacked bar charts, and generating publication-quality charts.

Use BWA for aligning sequencing reads to a reference genome for variant calling pipelines. Use when mapping short-read Illumina data to reference genomes for variant calling pipelines.

Advanced scientific computing for portfolio optimization, statistical testing, and numerical methods. Use when minimizing portfolio variance, fitting distributions to returns data, performing correlation analysis, running hypothesis tests, or solving constrained optimization problems. Provides optimization algorithms (BFGS, SLSQP) and statistical distributions essential for risk modeling.

Comprehensive testing guidelines for Vitest and React Testing Library. Covers quality standards, AAA pattern, naming conventions, branch coverage, and best practices. Reference this skill when creating or updating test code during Phase 2 (Testing & Stories).

Generate PDF documents programmatically with precise layout control using ReportLab. Use when creating PDF reports with custom layouts, generating invoices, producing PDF forms, or building PDFs with charts and tables without LaTeX.