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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+.

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Skill Claude CodeCodex

Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.

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Skill Claude CodeCodex

Create stunning, animation-rich HTML presentations from scratch or by converting PowerPoint files. Use when the user wants to build a presentation, convert a PPT/PPTX to web, or create slides for a talk/pitch. Helps non-designers discover their aesthetic through visual exploration rather than abstract choices.

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Skill Claude CodeCodex

Idiomatic Go patterns, best practices, and conventions for building robust, efficient, and maintainable Go applications.

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Skill Claude CodeCodex

Go testing patterns including table-driven tests, subtests, benchmarks, fuzzing, and test coverage. Follows TDD methodology with idiomatic Go practices.

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Skill Claude CodeCodex

Create and update pitch decks, one-pagers, investor memos, accelerator applications, financial models, and fundraising materials. Use when the user needs investor-facing documents, projections, use-of-funds tables, milestone plans, or materials that must stay internally consistent across multiple fundraising assets.

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Skill Claude CodeCodex

Draft cold emails, warm intro blurbs, follow-ups, update emails, and investor communications for fundraising. Use when the user wants outreach to angels, VCs, strategic investors, or accelerators and needs concise, personalized, investor-facing messaging.

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Skill Claude CodeCodex

Pattern for progressively refining context retrieval to solve the subagent context problem.

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Skill Claude CodeCodex

JPA/Hibernate patterns for entity design, relationships, query optimization, transactions, auditing, indexing, pagination, and pooling in Spring Boot.

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Skill Claude CodeCodex

Patterns for implementing Apple's Liquid Glass — a dynamic material that blurs content behind it, reflects color and light from surrounding content, and reacts to touch and pointer interactions. Covers SwiftUI, UIKit, and WidgetKit integration.

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Skill Claude CodeCodex

Conduct market research, competitive analysis, investor due diligence, and industry intelligence with source attribution and decision-oriented summaries. Use when the user wants market sizing, competitor comparisons, fund research, technology scans, or research that informs business decisions.