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 setup instructions are missing, stale, or spread across a…
Build or transform ecommerce websites from loose company, product, or brand briefs into unconventional, brand-specific shopping experiences with original ImageGen product imagery. Use when a user asks for a crazy, wild, experimental, unconventional, anti-template, art-directed, or highly memorable online store; wants…
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, research public discussions and business pages, identify…
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 demo, a prototype, an interactive toy, or anything "inspired…
Generate high-converting landing pages as production-ready HTML with built-in design themes, copy frameworks (PAS, AIDA, BAB), CTA strategy, SEO meta, and automated conversion/speed audits. Use whenever the user wants a landing page, campaign page, lead capture page, promo page, launch page, or single-page site — or…
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 is launch-ready, inspect positioning, calls to action…
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, amateur, or visibly AI-generated UI; redesign an existing…
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 "made real" — including phrasings like "build this", "recreate…
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 analyze how a startup can become a sustainable business; decide…
Build or transform lightweight realtime voice-chat apps with a talking character avatar from either a user-supplied photograph or a text description. Use when Codex is asked to create a talking avatar, photo avatar, character chatbot, roleplaying voice companion, mouth-sprite animation, or reusable OpenAI Realtime…
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 tests for missed behavior.
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originalMIT
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: