Skill Claude CodeCodex
Best practices for dataset preparation and PEFT/LoRA fine-tuning.
Skill Claude CodeCodex
Best practices for dataset preparation and PEFT/LoRA fine-tuning.
Skill Claude CodeCodex
PostgreSQL is an advanced, enterprise-class open-source relational database. Understanding its internals is crucial for high-performance tuning.
Skill Claude CodeCodex
As data grows beyond the capacity of a single machine, databases must scale.
Skill Claude CodeCodex
DDD is a software engineering approach that centers the design around the business domain, bridging the gap between technical and business teams.
Skill Claude CodeCodex
Designing resilient microservices requires managing distributed state, failures, and complex communication networks.
Skill Claude CodeCodex
Use when the user asks about strategic roadmapping, technology roadmapping, product roadmap creation, prioritization frameworks (RICE, WSJF, MoSCoW), OKR alignment, stakeholder alignment, timeline planning, or roadmap communication. Do NOT use for: project management task tracking, sprint planning, or technical…
Skill Claude CodeCodex
Enforce bulk data import patterns including CSV/Excel parsing, file upload handling, validation pipeline, progress tracking, batch processing, error reporting, rollback on failure, deduplication, and background processing. NOT for real-time data ingestion or streaming pipelines.
Skill Claude CodeCodex
Use this skill when building with Bun runtime — Bun APIs, testing, package management, shell scripting, hot reload, SQLite, file I/O. This skill enforces: built-in APIs over npm equivalents, Bun test runner, bun install speed optimization, Bun.shell for scripts. Do NOT use for: Node.js-specific APIs…
Skill Claude CodeCodex
Redis caching patterns including Cache-Aside, Write-Through, and invalidation.
Skill Claude CodeCodex
Use this skill when building with Deno — TypeScript runtime, Deno Deploy, Fresh framework, Deno std library. This skill enforces: permission-based security, URL import system, std lib usage over npm, Fresh island architecture. Do NOT use for: Node.js projects, Bun projects, browser-only TypeScript.
Skill Claude CodeCodex
Use this skill when building Oak backend applications — Deno native HTTP framework, middleware context, composable middleware. This skill enforces: middleware composition, proper context usage, Deno permissions, type-safe routing. Do NOT use for: Node.js Express projects, Hono on Deno, traditional Node.js backends.
Skill Claude CodeCodex
Use this skill when structuring .NET applications — clean architecture, vertical slices, CQRS, MediatR, dependency injection, and project organization. This skill enforces: solution structure conventions, dependency flow direction, DI registration patterns, and architecture testing. Requires .NET SDK (dotnet new). Do…
Skill Claude CodeCodex
Use this skill when implementing .NET patterns — MediatR pipelines, CQRS, Result pattern, EF Core patterns, pipeline behaviors, and event sourcing. This skill enforces: MediatR for CQRS, FluentValidation for validation, Result type for error handling, EF Core conventions. Requires .NET SDK (dotnet new). Do NOT use…
Skill Claude CodeCodex
Use this skill when building with Elixir — Phoenix framework, OTP, BEAM, LiveView, Ecto, supervision trees. This skill enforces: OTP design principles, Phoenix context boundaries, LiveView state management, Ecto schema conventions, supervision tree structure. Do NOT use for: non-Elixir projects, frontend JavaScript…
Skill Claude CodeCodex
Best practices for Kafka/RabbitMQ message brokering and event sourcing.
Skill Claude CodeCodex
Techniques to solve the N+1 problem using Dataloader.
Skill Claude CodeCodex
Use this skill when building Micronaut applications — compile-time DI, reactive HTTP server, AOT optimization, GraalVM native image. This skill enforces: annotation-based configuration, compile-time DI (no reflection), reactive programming with Project Reactor, declarative HTTP clients, and AOT compilation. Requires…
Skill Claude CodeCodex
Use this skill when building Quarkus backend applications — supersonic Java, Dev UI, GraalVM native, reactive messaging, Panache ORM. This skill enforces: compile-time metadata processing, live reload, continuous testing, container-first design. Do NOT use for: Spring Boot projects, Micronaut applications, standard…
Skill Claude CodeCodex
Use this skill when working with Drizzle ORM — schema definition, SQL-like queries, migrations, relations, and edge deployment. This skill enforces: schema-first design, explicit SQL patterns, drizzle-kit for migrations, relational query builder, and connection management. Requires drizzle-orm and drizzle-kit. Do NOT…
Skill Claude CodeCodex
Use this skill when building Express.js apps — app setup, middleware chain, routing, error handling, validation. This skill enforces: proper middleware ordering, global error handler, Zod/Joi validation, module-based routing, environment config. Do NOT use for: database schema design, frontend, DevOps, non-Express…
Skill Claude CodeCodex
Use this skill when building Fastify applications — schema validation, plugin system, hooks, serialization. This skill enforces: JSON Schema validation, plugin encapsulation, schema serializers, Fastify lifecycle hooks. Do NOT use for: Express.js apps, database schema, frontend, or non-Fastify Node backends.
Skill Claude CodeCodex
Use this skill when building Hono applications — lightweight web framework, edge-ready, Zod validation, RPC client. This skill enforces: Hono app factory pattern, Zod validation middleware, RPC type-safe client, middleware composition, edge deployment readiness. Do NOT use for: Express.js apps, NestJS projects, or…
Skill Claude CodeCodex
Use this skill when working with Prisma ORM — schema modeling, migrations, queries, relations, middleware, and deployment. This skill enforces: data model normalization, relation conventions, Prisma Client best practices, migration safety, and performance optimization. Requires @prisma/client. Do NOT use for…
Skill Claude CodeCodex
Use this skill when building Laravel applications — MVC structure, Eloquent ORM, service layer, validation, queues, and testing. This skill enforces: thin controllers, service layer for business logic, Eloquent best practices with eager loading, form request validation, and queue job structure. Requires Laravel 10+ or…