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Skill Claude CodeCodex

REST API design patterns including resource naming, status codes, pagination, filtering, error responses, versioning, and rate limiting for production APIs.

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Skill Claude CodeCodex

Write articles, guides, blog posts, tutorials, newsletter issues, and other long-form content in a distinctive voice derived from supplied examples or brand guidance. Use when the user wants polished written content longer than a paragraph, especially when voice consistency, structure, and credibility matter.

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Skill Claude CodeCodex

Patterns and architectures for autonomous Claude Code loops — from simple sequential pipelines to RFC-driven multi-agent DAG systems.

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Skill Claude CodeCodex

Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.

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Skill Claude CodeCodex

ClickHouse database patterns, query optimization, analytics, and data engineering best practices for high-performance analytical workloads.

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Skill Claude CodeCodex

Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.

x-cmd/skill

Skill Claude CodeCodex

Interactive installer for Everything Claude Code — guides users through selecting and installing skills and rules to user-level or project-level directories, verifies paths, and optionally optimizes installed files.

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Skill Claude CodeCodex

Create platform-native content systems for X, LinkedIn, TikTok, YouTube, newsletters, and repurposed multi-platform campaigns. Use when the user wants social posts, threads, scripts, content calendars, or one source asset adapted cleanly across platforms.

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Skill Claude CodeCodex

Cache expensive file processing results using SHA-256 content hashes — path-independent, auto-invalidating, with service layer separation.

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Skill Claude CodeCodex

Instinct-based learning system that observes sessions via hooks, creates atomic instincts with confidence scoring, and evolves them into skills/commands/agents. v2.1 adds project-scoped instincts to prevent cross-project contamination.

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Skill Claude CodeCodex

Automatically extract reusable patterns from Claude Code sessions and save them as learned skills for future use.

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Skill Claude CodeCodex

Cost optimization patterns for LLM API usage — model routing by task complexity, budget tracking, retry logic, and prompt caching.

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Skill Claude CodeCodex

C++ coding standards based on the C++ Core Guidelines (isocpp.github.io). Use when writing, reviewing, or refactoring C++ code to enforce modern, safe, and idiomatic practices.

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Skill Claude CodeCodex

Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.

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Skill Claude CodeCodex

Database migration best practices for schema changes, data migrations, rollbacks, and zero-downtime deployments across PostgreSQL, MySQL, and common ORMs (Prisma, Drizzle, Django, TypeORM, golang-migrate).

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Skill Claude CodeCodex

Deployment workflows, CI/CD pipeline patterns, Docker containerization, health checks, rollback strategies, and production readiness checklists for web applications.

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Skill Claude CodeCodex

Django architecture patterns, REST API design with DRF, ORM best practices, caching, signals, middleware, and production-grade Django apps.

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Skill Claude CodeCodex

Django security best practices, authentication, authorization, CSRF protection, SQL injection prevention, XSS prevention, and secure deployment configurations.

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Skill Claude CodeCodex

Django testing strategies with pytest-django, TDD methodology, factoryboy, mocking, coverage, and testing Django REST Framework APIs.

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Skill Claude CodeCodex

Verification loop for Django projects - migrations, linting, tests with coverage, security scans, and deployment readiness checks before release or PR.

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Skill Claude CodeCodex

Docker and Docker Compose patterns for local development, container security, networking, volume strategies, and multi-service orchestration.

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Skill Claude CodeCodex

Playwright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.

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Skill Claude CodeCodex

Formal evaluation framework for Claude Code sessions implementing eval-driven development (EDD) principles.

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Skill Claude CodeCodex

Apple FoundationModels framework for on-device LLM — text generation, guided generation with @Generable, tool calling, and snapshot streaming in iOS 26+.