Skill Claude CodeCodex
REST and GraphQL API design principles — resource modeling, HTTP semantics, pagination, error handling, HATEOAS, schema design, and DataLoader patterns. Use when designing new APIs, reviewing specs, or establishing team API standards.
Skill Claude CodeCodex
Meta-skill that orchestrates the full API development lifecycle — from design through documentation — by coordinating specialized skills, agents, and commands into a seamless build workflow.
Skill Claude CodeCodex
API versioning strategies — URL path, header, query param, content negotiation — with breaking change classification, deprecation timelines, migration patterns, and multi-version support. Use when evolving APIs, planning breaking changes, or managing version lifecycles.
Skill Claude CodeCodex
Authentication and authorization patterns — JWT, OAuth 2.0, sessions, RBAC/ABAC, password security, MFA, and vulnerability prevention. Use when implementing login flows, protecting routes, managing tokens, or auditing auth security.
Skill Claude CodeCodex
Caching strategies, invalidation, eviction policies, HTTP caching, distributed caching, and anti-patterns. Use when designing cache layers, choosing eviction policies, debugging stale data, or optimizing read-heavy workloads.
Skill Claude CodeCodex
Safe, zero-downtime database migration strategies — schema evolution, rollback planning, data migration, tooling, and anti-pattern avoidance for production systems. Use when planning schema changes, writing migrations, or reviewing migration safety.
Skill Claude CodeCodex
Error handling patterns across languages and layers — operational vs programmer errors, retry strategies, circuit breakers, error boundaries, HTTP responses, graceful degradation, and structured logging. Use when designing error strategies, building resilient APIs, or reviewing error management.
Skill Claude CodeCodex
Rate limiting algorithms, implementation strategies, HTTP conventions, tiered limits, distributed patterns, and client-side handling. Use when protecting APIs from abuse, implementing usage tiers, or configuring gateway-level throttling.
Skill Claude CodeCodex
Design intuitive, scalable REST and GraphQL APIs that developers love. Covers resource modeling, HTTP semantics, pagination, error handling, versioning, and GraphQL schema patterns.
Skill Claude CodeCodex
Lightweight documentation capturing the context, decision, and consequences of significant technical choices. ADRs become the institutional memory of why things are built the way they are.
Skill Claude CodeCodex
Backend architecture patterns for building maintainable, testable systems: Clean Architecture, Hexagonal Architecture, and Domain-Driven Design.
Skill Claude CodeCodex
Design and implement event stores for event-sourced systems. Use when building event sourcing infrastructure, implementing event persistence, projections, snapshotting, or CQRS patterns.
Skill Claude CodeCodex
Production Go concurrency patterns — goroutines, channels, sync primitives, context, worker pools, pipelines, and graceful shutdown. Use when building concurrent Go applications or debugging race conditions.
Skill Claude CodeCodex
Patterns for building distributed systems: service decomposition, inter-service communication, data management, and resilience. Helps you avoid the "distributed monolith" anti-pattern.
Skill Claude CodeCodex
Build and manage monorepos with Turborepo, Nx, and pnpm workspaces — covering workspace structure, dependency management, task orchestration, caching, CI/CD, and publishing. Use when setting up monorepos, optimizing builds, or managing shared packages.
Skill Claude CodeCodex
WHAT: Production-ready Node.js backend patterns - Express/Fastify setup, layered architecture, middleware, error handling, validation, database integration, authentication, and caching. WHEN: User is building REST APIs, setting up Node.js servers, implementing authentication, integrating databases, adding…
Skill Claude CodeCodex
PostgreSQL-based job queue with priority scheduling, batch claiming, and progress tracking. Use when building job queues without external dependencies. Triggers on PostgreSQL job queue, background jobs, task queue, priority queue, SKIP LOCKED.
Skill Claude CodeCodex
Controller-service-query layered API architecture with data enrichment and parallel fetching. Use when building REST APIs or GraphQL resolvers with clean separation of concerns. Triggers on API architecture, service layer, controller pattern, data enrichment, REST API.
Skill Claude CodeCodex
Postgres performance optimization and best practices from Supabase — covering indexing, connection management, RLS security, schema design, locking, data access patterns, and monitoring. Use when writing SQL, designing schemas, optimizing queries, or configuring Postgres.
Skill Claude CodeCodex
Patterns for animating financial numbers with spring physics, formatting, and visual feedback. Covers animated counters, price tickers, percentage changes, and value flash effects. Use when building financial dashboards or trading UIs. Triggers on animated number, price animation, financial display, number formatting…
Skill Claude CodeCodex
Patterns for building design system components using Surface primitives, CVA variants, and consistent styling. Use when building reusable UI components that follow design token architecture. Triggers on Surface component, CVA, class-variance-authority, component variants, design tokens.
Skill Claude CodeCodex
Foundational design system architecture — token hierarchies, theming infrastructure, token pipelines, and governance. Use when creating design tokens, implementing theme switching, setting up Style Dictionary, or establishing multi-brand theming. Triggers on design tokens, theme provider, Style Dictionary, token…
Skill Claude CodeCodex
Patterns for creating design systems with personality and distinctive aesthetics. Covers aesthetic documentation, color token architecture, typography systems, layered surfaces, and motion. Use when building design systems that go beyond generic templates. Triggers on design system, design tokens, aesthetic, color…
Skill Claude CodeCodex
Patterns for building dark-themed financial charts and data visualizations. Covers chart theming, color scales for gains/losses, and real-time data display. Use when building trading dashboards or financial analytics. Triggers on chart theme, data visualization, financial chart, dark theme, gains losses, trading UI.
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: