Frontend

Build LLM-powered applications and pipelines using proven methodology - task-model fit analysis, pipeline architecture, structured outputs, file-based state, and cost estimation. Use when building AI features, data processing pipelines, agents, or any LLM-integrated system. Inspired by Karpathy's methodology and production case studies.

Specialized testing for React applications using TanStack ecosystem (Query, Router, Table, Form) with Vite and Vitest. Use when testing React + TanStack apps, mocking server state, testing router, or validating query behavior. Triggers: 'TanStack testing', 'React Query testing', 'test TanStack', 'mock query', 'router test'.

Use when completing tasks, implementing major features, or before merging to verify work meets requirements

Interactive design refinement through collaborative dialogue before implementation. USE WHEN user wants to design a feature OR plan architecture OR explore approaches OR needs help thinking through implementation before coding OR asks "how should I" build something. Asks questions one at a time, proposes alternatives, validates incrementally.

Build full-stack web applications using Rust (Axum + SQLx) with HTMX + Alpine.js frontend and Neon (serverless PostgreSQL). Use when asked to create web apps, CRUD apps, dashboards, forms, or any stateful web application. Triggers on requests like "build a todo app", "create a voting app", "make a dashboard", "build a blog", etc.

Invoke Codex CLI for complex coding tasks requiring high reasoning capabilities. This skill should be invoked when users explicitly mention "Codex", request complex implementation challenges, advanced reasoning, GPT-5.1 capabilities, or need high-reasoning model assistance. Automatically triggers on codex-related requests and supports session continuation for iterative development.

Skill to assist with how a GitHub repository is configured with GitHub integrations, including instructions for agents in markdown (AGENTS and CLAUDE), github actions for invoking agents, and specific localization procedures such as defining claude/codex skills, or claude subagents. The skill helps with both technical aspects, and with best practice for guiding agents.

Maps NIST controls to FedRAMP requirements and documents. Use when helping with control implementation, compliance mapping, security baseline alignment, or understanding control requirements.

Expert guidance on Nix, NixOS, and home-manager best practices. USE WHEN working with Nix expressions, NixOS configuration, home-manager, flakes, or Nix package development.

Create production-ready Osiris ETL components (extractors, writers, processors). Use when building new components, implementing capabilities (discover, streaming, bulkOperations), adding doctor/healthcheck methods, packaging for distribution, validating against 60-rule checklist, or ensuring E2B cloud compatibility. Supports third-party component development in isolated projects.

Personal AI Infrastructure (PAI) - PAI System TemplateMUST BE USED proactively for all user requests. USE PROACTIVELY to ensure complete context availability.=== CORE IDENTITY (Always Active) ===Your Name: [CUSTOMIZE - e.g., Kai, Nova, Atlas]Your Role: [CUSTOMIZE - e.g., User's AI assistant and future friend]Personality: [CUSTOMIZE - e.g., Friendly, professional, resilient to user frustration. Be snarky back when the mistake is user's, not yours.]Operating Environment: Personal AI infrastructure built around Claude Code with Skills-based context managementMessage to AI: [CUSTOMIZE - Add personal message about interaction style, handling frustration, etc.]=== ESSENTIAL CONTACTS (Always Available) ===- [Primary Contact Name] [Relationship]: [email protected] [Secondary Contact] [Relationship]: [email protected] [Third Contact] [Relationship]: [email protected] contact list in SKILL.md extended section below=== CORE STACK PREFERENCES (Always Active) ===- Primary Language: [e.g., TypeScri

Creates comprehensive implementation plans with bite-sized tasks before touching code. USE WHEN user wants detailed implementation plan OR has spec/requirements for multi-step task OR needs to break down complex feature OR before starting significant coding work. Documents file paths, code examples, testing, and verification steps assuming engineer has minimal codebase context.

Analyzes FedRAMP FRMR documents to extract control mappings, KSI entries, and version changes. Use when the user asks about FedRAMP requirements, control mappings, compliance data, or needs to understand FRMR document content.

Guidance for implementing neural network inference (like GPT-2) under extreme code size constraints. This skill should be used when tasks require implementing ML model inference in minimal code (code golf), parsing model checkpoints in constrained environments, or building transformer architectures in low-level languages like C with strict size limits.

Run Vitest tests for a specific component with coverage. Use when making changes to React components to ensure tests pass and coverage is maintained.

Guidance for developing CoreWars warriors that achieve target win rates against specific opponents. This skill should be used when tasks involve writing, optimizing, or debugging Redcode assembly warriors for the CoreWars programming game, particularly when win rate thresholds must be met against multiple opponents.

Guidance for identifying and fixing security vulnerabilities in code. This skill should be used when tasks involve fixing CWE-classified vulnerabilities, addressing security flaws, patching injection vulnerabilities, or responding to security-related test failures.

Guide for building metacircular evaluators in Scheme-like languages. This skill applies when implementing interpreters that can interpret themselves, handling tasks involving eval/apply loops, environment management, closure implementation, and multi-level interpretation. Use for any metacircular evaluator, Scheme interpreter, or self-interpreting language implementation task.

Guidance for creating polyglot source files that compile and run correctly as both Rust and C/C++ programs. This skill should be used when asked to create code that is valid in multiple programming languages simultaneously, particularly Rust and C/C++ polyglots.

This skill guides writing DigitalOcean infrastructure with OpenTofu/Terraform. Use when provisioning Droplets, VPCs, Managed Databases, Firewalls, or other DO resources.