Skill Claude CodeCodex
Copywriting for technical founders. Covers X posts, X threads, Substack editions, LinkedIn posts, product launch captions, and README headlines. Teaches AI to write with the directness of a senior operator and the specificity of an engineer. Stops AI from producing generic marketing copy that sounds like everyone else…
Skill Claude CodeCodex
Product launch playbook for indie devs and technical founders. Covers asset sequencing, timing, platform order, community posting strategy, GitHub presence, and the 48-hour launch window. For ystack, Focused AI, Lumina, and Standard Bio. launches. Stops AI from producing generic "launch day" checklists that ignore…
Skill Claude CodeCodex
The main marketing skill. Teaches AI how to produce high-quality marketing assets from scratch. Covers visual direction, motion design, copywriting, platform strategy, and brand identity. For Remotion videos, Nano Banana graphics, Substack headers, X posts, LinkedIn, and product launches. Stops the AI from producing…
Skill Claude CodeCodex
Nano Banana image generation for marketing assets. Artist-level visual direction for brand graphics, thumbnails, Substack covers, X post backgrounds, and LinkedIn headers. Covers prompt architecture, lighting direction, composition rules, style consistency, and what to never generate. Stops AI from producing generic…
Skill Claude CodeCodex
Remotion video composition for marketing. Teaches AI to write Apple-quality motion in React/TypeScript. Covers spring physics, composition architecture, frame timing, text reveal patterns, and platform-specific output. For X posts, Substack headers, LinkedIn launches, and product demos. Stops AI from writing flat…
Agent
Backend specialist. Reliable APIs, DB schemas, server logic. Zod validation, full error handling, no hardcoded secrets.
Agent
Premium UI specialist. Builds production-grade React/Next.js with taste-soft-skill — glassmorphism, spring motion, refined typography. Auto-invoked for UI changes.
Agent
Motion design specialist. Reviews Frontend output for missing springs, AnimatePresence, status glow. Always runs after frontend, before QA.
Agent
QA specialist. Tests like a user breaking things. Playwright browser automation. Happy path + sad paths + mobile.
Agent
Security and correctness auditor. Reads code assuming something is wrong.
Agent
Release engineer. Reads QA and Review output — aborts if either NOT READY. Clean conventional commits, PR to dev branch.
Instructions file CodexOpenCode
AGENTS.md instructions for Yasuui/ystack, covering agents.md — ystack ⚡, 🏗️ who you are, ⚡ core operating principles, 🦾 autonomy and 🕵️♂️ agent roster.
Instructions file Gemini CLI
Gemini CLI instructions for Yasuui/ystack, covering gemini.md — ystack ⚡, this is the primary config file for antigravity ide, agents.md remains for compatibility with other tools, identity and subagent dispatch.
Agent
You write documentation the next developer will actually read.
Agent
You create assets that look like they were made by a designer who codes. One job: make ystack look real, credible, and worth starring. No AI slop. No stock photo energy. No generic gradients. No corporate speak.
Agent
You do not touch code until you know exactly what is broken and why.