Convenient, ready-to-use engineering skills and best practices for your AI assistant.
This repository also configures its own agents. See what koko-contextos-agents tells them →
Skill Claude CodeCodex
Generates agent-specific configuration files from the unified ContextOS format. One internal system, multiple output formats for Claude, Gemini, Copilot, Cursor, Aider, Continue, OpenHands, and others.
Skill Claude CodeCodex
Raw mechanical interfaces fusing Swiss typographic print with military terminal aesthetics. Rigid grids, extreme type scale contrast, utilitarian color, analog degradation effects. For data-heavy dashboards, portfolios, or editorial sites that need to feel like declassified blueprints.
Skill Claude CodeCodex
Smart context selection engine. Analyzes the current task, consults the Project Graph, and returns only the documents and skills needed. Prevents context window overflow by loading minimum relevant information.
Skill Claude CodeCodex
AI Project Operating System — Context Compiler that transforms user intent into minimal, relevant context for any AI agent and any task. Manages the full lifecycle: Idea → Requirements → Architecture → Planning → Development → Review → Release.
Skill Claude CodeCodex
Database architecture, schema design, Prisma, Drizzle ORM, indexing strategies, migrations, and N+1 query resolution.
Skill Claude CodeCodex
ContextOS skill for Domain-Driven Design.
Skill Claude CodeCodex
Architecture Decision Records (ADR) management. Creates, tracks, and queries decisions so the AI agent understands WHY choices were made, not just WHAT was chosen.
Skill Claude CodeCodex
Docker containerization, multi-stage builds, non-root security, layer caching optimization, and docker-compose standards.
Skill Claude CodeCodex
Senior engineering workflow skill. Enforces spec → plan → build → test → review → ship. AI never writes code before a spec and plan are approved. Acts like a senior, not a junior. Integrated with gstack-roles for automatic role activation per phase.
Skill Claude CodeCodex
ContextOS skill for FastAPI.
Skill Claude CodeCodex
Generates project documentation from a single idea. Creates PRD, Architecture, Database, API, UI, Roadmap, Tasks, Decision Records, and Project Graph using templates. Supports incremental updates.
Skill Claude CodeCodex
Role-based AI specialist system. Defines 23 specialist roles and teaches the AI to adopt the correct role before each task phase, like a virtual engineering team.
Skill Claude CodeCodex
Visual design quality enforcement. 50 deterministic anti-pattern rules preventing AI design slop. Bans generic fonts, pure colors, nested cards, dated animations. Adapted for Tailwind CSS v4, shadcn/ui, and Framer Motion stacks.
Skill Claude CodeCodex
ContextOS skill for Microservices.
Skill Claude CodeCodex
Clean editorial-style interfaces. Warm monochrome palette, typographic contrast, flat bento grids, muted pastels. No gradients, no heavy shadows.
Skill Claude CodeCodex
ContextOS skill for NestJS.
Skill Claude CodeCodex
ContextOS skill for Next.js App Router, Server Components, Server Actions, performance optimization, and Vercel best practices.
Skill Claude CodeCodex
ContextOS skill for Node.js.
Skill Claude CodeCodex
ContextOS skill for Web Performance, Core Web Vitals, waterfall elimination, bundle size optimization, and caching strategies.
Skill Claude CodeCodex
Minimalist coding mindset. Write only what is strictly necessary for the task. 7-rung decision ladder before writing any code. Reduces output 54% while keeping all safety, validation, error handling, and security guards intact.
Skill Claude CodeCodex
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance…
Skill Claude CodeCodex
ContextOS skill for modern React (v18/v19), component architecture, state colocation, render optimization, and Vercel performance rules.
Skill Claude CodeCodex
Upgrades existing websites and apps to premium quality. Audits current design, identifies generic AI patterns, and applies high-end design standards without breaking functionality. Works with any CSS framework or vanilla CSS.
Skill Claude CodeCodex
Application and AI agent security skill. Enforces zero-trust defense-in-depth, OWASP Top 10 mitigation, prompt injection defense, and secure tool execution.
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: