Skill Claude CodeCodex
Use when reviewing code for architectural boundary violations, dependency direction errors, or layer coupling issues — covers 10 architectural patterns with invariants, violation signals, and dependency diagrams.
Skill Claude CodeCodex
Use when reviewing or implementing authentication and authorization — covers OAuth2 grant flows (Authorization Code + PKCE, Client Credentials, Device Flow), OpenID Connect (OIDC) and ID tokens, JWT best practices, RBAC and ABAC policy design, service-to-service authentication (mTLS, workload identity, API keys)…
Skill Claude CodeCodex
Use when designing or reviewing batch processing systems — covers distributed locking for exclusive job execution, idempotent checkpoint/resume, heartbeat-based dead job detection, job scheduling strategies, graceful shutdown, retry and DLQ for failed items, batch size optimization, and common anti-patterns across…
Skill Claude CodeCodex
Use when designing or reviewing caching layers — covers cache-aside/read-through/write-through/write-behind patterns, cache stampede and thundering herd prevention, CDN caching with Cache-Control headers, eviction policies (LRU/LFU/TTL/adaptive), multi-layer cache architecture, cache invalidation strategies, and…
Skill Claude CodeCodex
Use when designing or reviewing CI/CD pipelines — covers pipeline design (stages, jobs, parallelism), GitOps and IaC patterns, build optimization (caching, incremental builds, artifact management), deployment strategies (blue-green, canary, rolling update, recreate), security in pipelines (SLSA, SBOM, supply chain…
Skill Claude CodeCodex
Use when writing or reviewing documentation — covers Architecture Decision Records (ADR), API documentation (OpenAPI/AsyncAPI/JSDoc/docstrings), README and runbook standards, inline comments, technical debt registers, and documentation anti-patterns with concrete examples and red flags across TypeScript, Python, Java…
Skill Claude CodeCodex
Use when reviewing code for concurrency correctness — covers Race Conditions, Deadlocks, Thread Safety, Immutable Data, Producer-Consumer, Actor Model, Thread Pool, Async/Await pitfalls, Read-Write Locks, and Compare-and-Swap with red flags and fix strategies across TypeScript, Java, Go, and Python.
Skill Claude CodeCodex
Use when designing, reviewing, or debugging Kubernetes workloads — covers health probe design, resource requests vs limits, autoscaling (HPA/KEDA/VPA), PodDisruptionBudget and graceful shutdown, workload RBAC isolation, configuration injection, and container anti-patterns (CrashLoopBackOff, OOMKilled, Pending, fat…
Skill Claude CodeCodex
Use when reviewing C++ code — covers memory management and RAII, undefined behavior traps, template pitfalls, const correctness, move semantics, and common anti-patterns. C++ demands a specialized review lens because manual memory, implicit conversions, and template metaprogramming create failure modes invisible to…
Skill Claude CodeCodex
Universal code review patterns that apply across all languages. Use this skill when reviewing code regardless of the implementation language — covers naming clarity, complexity thresholds, dependency direction, test quality, error handling, and documentation. Load alongside a language-specific skill…
Skill Claude CodeCodex
Use when reviewing or designing data pipelines — covers ETL vs ELT, batch vs streaming vs micro-batch selection, idempotency, exactly-once delivery, watermarking, checkpointing, dead letter queues, backpressure, schema evolution, data contracts, pipeline orchestration and DAG design, with anti-patterns and red flags…
Skill Claude CodeCodex
Use when reviewing code for data validation correctness — covers validation boundary principle, TypeScript (Zod, Joi, io-ts), Python (Pydantic v2, marshmallow, dataclasses), Go (go-playground/validator), Java (Bean Validation / Hibernate Validator), schema evolution and compatibility, coercion vs strict parsing…
Skill Claude CodeCodex
Use when reviewing a PR that touches database queries, ORM usage, schema migrations, or data access layers, or when diagnosing slow queries, data integrity failures, or connection issues in production.
Skill Claude CodeCodex
Use when reviewing code for dependency coupling problems or module organisation issues — covers 6 DI patterns (Constructor, Property, Method, Interface, Service Locator, DI Container), Composition Root, Module/Package organisation, and a catalogue of DI anti-patterns with multi-language examples.
Skill Claude CodeCodex
Use when reviewing code for communication and responsibility problems between objects — covers all 11 GoF Behavioral patterns with intent, red flags, and refactoring cross-references.
Skill Claude CodeCodex
Use when reviewing code for object creation problems or structural composition issues — covers all 12 GoF Creational (5) and Structural (7) patterns with intent, red flags, and refactoring cross-references.
Skill Claude CodeCodex
Use when reviewing code for quality issues, when code feels hard to change or understand, when preparing for refactoring, or when a module has grown unwieldy.
Skill Claude CodeCodex
Use when designing or reviewing developer tooling, monorepo structure, dev environments, onboarding flows, or internal platforms — covers Monorepo tooling (Nx/Turborepo), dev containers, golden path / platform engineering, local-prod parity, fast feedback loops, DX-first API design, developer onboarding, and DX…
Skill Claude CodeCodex
Use when instrumenting distributed systems or reviewing tracing code — covers OpenTelemetry auto and manual instrumentation, span design, context propagation (W3C TraceContext, B3), sampling strategies (head, tail, probabilistic, rate-limiting), trace-based testing, exemplars, and anti-patterns (over-instrumentation…
Skill Claude CodeCodex
Use when designing or reviewing domain models — covers Bounded Contexts, Context Mapping, Aggregate Root, Value Objects vs Entities, Domain Events, Ubiquitous Language, Repository pattern, Domain vs Application Services, and DDD anti-patterns (anemic domain model, feature envy) with examples in TypeScript, Java, Go…
Skill Claude CodeCodex
Use when reviewing code for error handling correctness — covers Result/Either types, Exception hierarchies, Error propagation, Retry with backoff, Circuit breaker, Fail-fast, Graceful degradation, Error boundaries, Null Object/Optional, and Dead Letter Queue with red flags and fix strategies across TypeScript, Go…
Skill Claude CodeCodex
Use when designing or reviewing systems that store state as an immutable sequence of events — covers Event Sourcing fundamentals, CQRS, projections and read models, snapshot strategy, aggregate replay, event schema evolution and upcasting, eventual consistency, idempotency, and anti-patterns across TypeScript, Java…
Skill Claude CodeCodex
Use when designing or reviewing feature flag systems, progressive delivery pipelines, A/B testing infrastructure, or rollout strategies — covers feature toggles, canary/blue-green/ring deployments, percentage rollouts, kill switches, flag lifecycle, targeting rules, user segments, experiment design, and anti-patterns…
Skill Claude CodeCodex
Use when designing or reviewing file upload and media processing systems — covers presigned URL direct-to-storage uploads, resumable uploads (tus/S3 multipart), upload security pipeline (MIME magic bytes, virus scanning, quarantine), async media processing (thumbnails, transcoding, webhooks), image optimization…