Get code reviews, plan evaluations, and second opinions using OpenAI Codex CLI (GPT-5.5). Use for reviewing code changes, evaluating implementation plans, getting alternative perspectives, or validating approaches with another AI model.
Web search, URL analysis, and multi-source synthesis using the Antigravity CLI (agy). Use for online research, fetching and analyzing web pages, combining web search with local files, and synthesizing information from multiple sources.
Maintain a per-repo napkin file that tracks mistakes, corrections, and what works. Activates EVERY session, unconditionally. Read the napkin before doing anything. Write to it continuously as you work — not just at session boundaries. Log your own mistakes, not just user corrections. The napkin lives in the repo at `.claude/napkin.md`.
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation. Also use when user says 'ask me questions', 'interview me', or needs help clarifying requirements.
Use when returning to a project after time away, starting a work session, or recovering from interruption - provides comprehensive project context and recent activity summary
Clean survey data with missing value handling, variable recoding, and Stata label conversion to R factors. Use when processing raw survey/health study data, handling coded missing values (91/92/97/98), or converting Stata labels in R.
Use when starting work with a new data file, before any analysis or visualization. Also use when encountering parsing errors, unexpected values, or when the user says "check this data" or "what's in this file".
Sync local repository with Harvard Dataverse archive using the API. Use when uploading, replacing, or deleting files in a Dataverse dataset.