Surfaces every unstated belief a strategy or business case depends on, grades the evidence behind each one, and stress-tests the ones that would break the plan if wrong — using a load-bearing-assumption framework, not a generic risk brainstorm. Use before any…
Run an independent, read-only review of uncommitted changes, the current branch, or a pull request when asked for a cold or second-opinion review. Use Claude only when explicitly requested as the reviewer; otherwise use a fresh subagent or the main agent…
Pre-PR code review for branch changes. Use when user wants to review changes before opening a PR, asks to check their branch for issues, or mentions code review. Analyzes diff against base branch for code quality, bugs, security vulnerabilities, logical…
Create temporary public CodeSandbox browser sandboxes from small frontend examples through the Define API, then verify the rendered preview. Use when the user asks to create, open, or share a CodeSandbox demo. Do not use for CodeSandbox VM SDK or private…
Run an independent, read-only review of uncommitted changes, the current branch, or a pull request when asked for a cold, second-opinion, or Codex review. Use Codex only when explicitly requested as the reviewer; otherwise use a fresh subagent or the main…
Sets or tests pricing using willingness-to-pay research (Van Westendorp) and price elasticity revenue/margin modeling, both run through a bundled calculator, instead of cost-plus guessing or copying a competitor's price. Use whenever the user wants to set,…
Create, review, clarify, execute, or verify concise Product Requirements Prompts (PRPs) and staged PRP roadmaps. Use when the user explicitly asks for a PRP or roadmap, when a feature needs a durable implementation contract before coding, or when existing PRP…
Manage application state with the @virtuoso.dev/reactive-engine-* package family. Use this skill when (1) defining reactive state with Cell, Stream, Trigger, or Resource nodes, (2) wiring React components through EngineProvider, useCellValue, useCellValues,…