Find and qualify evidence-backed potential first customers, early adopters, design partners, or beta users for a startup using recent public pain and buying signals. Use when Codex needs to analyze a product URL or idea, define an ideal customer profile,…
Turn a startup, SaaS, app, developer tool, website, repository, or product idea into an evidence-backed business plan, monetization strategy, pricing architecture, editable 12-month financial model, and 90-day execution roadmap. Use when Codex needs to…
Audit a startup, SaaS, app, developer tool, landing page, or product before launch from a live URL, localhost page, repository, screenshots, or supplied copy. Use when Codex needs to determine what a startup appears to do, test whether its public experience…
Audit and revamp existing web interfaces into polished, professional, product-specific experiences while preserving behavior and working within the current frontend stack. Use for requests to improve a vibe-coded, generic, template-like, inconsistent, dated,…
Make an unfamiliar or undocumented repo easy to run. Use when someone cannot get a project running, when onboarding a new developer, or when asked to write a QUICKSTART, a setup/prerequisite check ("doctor") script, or a documented .env.example. Also use when…
Measure whether Python tests detect behavior changes through diff-scoped mutation testing. Use when Codex needs to audit the strength of a pytest suite, evaluate whether tests cover changed code, investigate surviving mutants, or propose and verify targeted…
Build a complete, polished, production-quality browser game inside a single self-contained HTML file using only vanilla HTML, CSS and JavaScript — no frameworks, no libraries, no external assets. Use this skill whenever the user asks for a game, a playable…
Recreate a UI screenshot, mockup, or design image as production-quality React + TypeScript + Tailwind code with near-pixel-perfect visual fidelity. Use this skill whenever the user shares an image of an interface and wants it built, cloned, converted, or…