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Skill Claude CodeCodex
Use this skill when the user says 'API versioning', 'version strategy', 'URI versioning', 'header versioning', 'content negotiation', 'accept header', 'breaking change', 'API migration', 'deprecate endpoint', 'sunset endpoint'. This skill manages API version transitions using URI, header, or content-negotiation…
Skill Claude CodeCodex needs its repo
Use when the user asks about GraphQL Federation, Apollo Federation, federated schema, subgraphs, supergraph, schema composition, @key/@requires/@external directives, or distributed GraphQL architecture. Do NOT use for: basic GraphQL schema design (backend-graphql-patterns), or single-service GraphQL APIs.
Skill Claude CodeCodex
Use when the user asks about API as product, API product management, API strategy, API monetization, developer portal, API documentation portal, API deprecation, versioning strategy, or API lifecycle management. Do NOT use for: API implementation (backend-api-design), API documentation generation (api-documentation)…
Skill Claude CodeCodex
Use this skill when the user says 'audit log', 'audit trail', 'compliance logging', 'tamper-evident log', 'immutable log', 'audit table', 'change tracking', 'who changed what', 'data provenance', 'audit events', 'reporting log'. This skill implements immutable audit trails for compliance (SOC 2, SOX, HIPAA, GDPR).…
Skill Claude CodeCodex
Use this skill when the user says 'auth', 'authentication', 'authorization', 'JWT', 'OAuth', 'RBAC', 'permissions', 'login', 'session', 'refresh token', 'guard', 'middleware auth', or when implementing or reviewing authentication and authorization. This skill enforces: JWT structure and validation, refresh token…
Skill Claude CodeCodex
Use this skill when the user says 'authorization', 'access control', 'RBAC', 'ABAC', 'ReBAC', 'permissions', 'role', 'policy', 'Casbin', 'Cerbos', 'permission delegation', 'temporary access', 'break glass', 'super admin', 'JIT elevation', 'role hierarchy', or when designing or implementing authorization for any…
Skill Claude CodeCodex
Use this skill when designing background job processing, task queues, or worker systems. This skill enforces: job idempotency, retry with exponential backoff, queue topology with dead letter, and worker concurrency controls. Applies to any backend stack with Redis/SQS/DB-backed queues. Do NOT use for: event streaming…
Skill Claude CodeCodex
Use this skill when the user says 'BFF', 'Backend for Frontend', 'API gateway', 'gateway specialization', 'frontend API', 'mobile API', 'web API', 'API composition', 'aggregation service', 'frontend gateway'. This skill designs Backend for Frontend patterns with specialized API gateways for each client type. Applies…
Skill Claude CodeCodex
Use this skill when the user says 'cache', 'Redis', 'Memcached', 'CDN', 'cache-aside', 'read-through', 'write-through', 'write-behind', 'cache invalidation', 'TTL', 'cache stampede', 'thundering herd', 'cache warming', 'LRU', 'LFU', 'cache hit ratio', 'cache strategy', or when designing a caching layer. This skill…
Skill Claude CodeCodex
Use this skill when the user asks 'where does this code go', 'what layer', 'clean architecture', 'hexagonal', 'ports and adapters', 'domain layer', 'application layer', 'infrastructure layer', 'should this be in service or repository', or when designing or reviewing backend code organization. This skill enforces…
Skill Claude CodeCodex
Deep dive into the mechanics of Threading, Goroutines, Event Loops, Race Conditions, and Memory Barriers.
Skill Claude CodeCodex
Use this skill when the user says 'contract testing', 'Pact', 'consumer-driven contracts', 'CDC', 'provider verification', 'pact test', 'pactflow', 'contract test', 'consumer test', 'provider test'. This skill implements consumer-driven contract testing using Pact to ensure microservices communicate correctly without…
Skill Claude CodeCodex
Use this skill when the user says 'CQRS', 'command query segregation', 'separate read write model', 'command model', 'query model', 'read model', 'write model', 'materialized view', 'command handler', 'query handler'. This skill enforces: strict command/query separation, write model optimized for consistency, read…
Skill Claude CodeCodex
Use this skill when the user says 'data masking', 'PII', 'personally identifiable information', 'encryption', 'anonymization', 'GDPR', 'CCPA', 'data privacy', 'field-level encryption', 'tokenization', 'redaction', 'data classification'. This skill masks, encrypts, and anonymizes sensitive data (PII) for GDPR/CCPA…
Skill Claude CodeCodex
Focus: High-throughput message processing, event streaming, Kafka, Flink, stateful processing, and exact-once semantics. Triggers: data streaming, kafka architecture, flink jobs, stream processing, exactly once.
Skill Claude CodeCodex
Use this skill when the user says 'database design', 'schema design', 'query optimization', 'slow query', 'migration', 'index', 'ORM', 'repository pattern', 'N+1 problem', 'transaction', or when designing or troubleshooting the data layer. This skill enforces schema design principles, indexing strategy, N+1 detection…
Skill Claude CodeCodex
Use this skill when selecting or reviewing any design pattern — GoF creational/structural/behavioral, enterprise, integration, concurrency, architectural, or anti-pattern avoidance. This skill enforces: pattern selection decision framework, trade-off analysis, anti-pattern rejection, explicit elimination criteria for…
Skill Claude CodeCodex
Hardcore microservice patterns including SAGA, CQRS, and Event Sourcing mechanics.
Skill Claude CodeCodex
Use this skill when the user says 'distributed lock', 'Redis lock', 'Redlock', 'ZooKeeper lock', 'advisory lock', 'PostgreSQL lock', 'pgadvisorylock', 'lease', 'distributed mutex', 'lock timeouts', 'fencing token'. This skill implements distributed locking using Redis Redlock, ZooKeeper, PostgreSQL advisory locks, or…
Skill Claude CodeCodex
Focus: Decoupling microservices, asynchronous communication, scalable systems, and message brokers (Kafka, RabbitMQ, AWS SQS/SNS). Triggers: architecture, event-driven, eda, async, pub-sub, messages, outbox-pattern.
Skill Claude CodeCodex
Use this skill when the user says 'event sourcing', 'event store', 'event stream', 'event sourced', 'rehydrate from events', 'event replay', 'projection rebuild', 'event log', 'append-only log', 'event history'. This skill enforces: events as the single source of truth, current state derived from event replay…
Skill Claude CodeCodex
Use this skill when implementing feature flags, canary releases, A/B testing, or kill switches. This skill enforces: flag ownership with removal date, cached evaluation, kill switches for critical features, safe defaults (off). Applies to LaunchDarkly, Unleash, Flagsmith, or custom flag systems. Do NOT use for…
Skill Claude CodeCodex
Use this skill when designing file upload, storage, CDN delivery, or file processing systems. This skill enforces: direct-to-storage uploads via presigned URLs, flat key design with no sensitive data, server-side validation, CDN caching with version hashes. Applies to S3, Azure Blob, GCS, or any S3-compatible storage.…
Skill Claude CodeCodex
Use this skill when working with Firebase platform — Firestore, Authentication, Cloud Storage, Cloud Functions, Hosting, Security Rules, Firebase Admin SDK, Firebase Extensions. This skill enforces: proper security rules, Firestore data modeling (no nesting >3), auth provider configuration, function cold start…
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