By Jeffallan

Designs REST and GraphQL APIs from resource modeling to an OpenAPI 3.1 contract, with versioning, pagination and RFC 7807 error handling.

Jeffallan/claude-skills

Walks through designing, building and polishing a command-line tool: user workflow and command hierarchy, implementation in commander, click, typer or cobra, completions and cross-platform testing.

Jeffallan/claude-skills

Creates and checks Kubernetes manifests, Helm charts, RBAC and network policies, and helps debug pod problems, with kubectl checks and rollback steps.

Jeffallan/claude-skills

Builds Laravel 10+ applications with Eloquent models, Sanctum authentication, Horizon queues, API resources and Livewire components, tested with Pest or PHPUnit.

Jeffallan/claude-skills

Handles pandas DataFrame work: cleaning, merging, groupby aggregation, pivots, time-series resampling and memory tuning, with checks on dtypes, shapes and nulls.

Jeffallan/claude-skills

Guides writing and tuning Apache Spark jobs: DataFrame and RDD code, Spark SQL, partitioning, caching, shuffle tuning and structured streaming.

Jeffallan/claude-skills

Designs advanced TypeScript types: generics, conditional and mapped types, branded types, discriminated unions and type guards, with tsc checks and tRPC type safety.

Jeffallan/claude-skills

Builds Angular 17+ features with standalone components, signals, NgRx state, RxJS patterns and lazy-loaded routing, then checks bundle size and test coverage.

Jeffallan/claude-skills

Guides system architecture design end to end: gathering requirements, matching them to a pattern, documenting trade-offs with ADRs, and reviewing.

Jeffallan/claude-skills

Queries and edits Jira issues and Confluence pages through an MCP server, covering JQL and CQL queries, server setup, authentication and sprint or backlog workflows.

Jeffallan/claude-skills

Designs chaos experiments, failure injection and game days for distributed systems, with blast radius limits, rollback plans and written learnings.

Jeffallan/claude-skills

Designs cloud architectures, migration plans, cost optimization recommendations and disaster recovery strategies across AWS, Azure and GCP.

Jeffallan/claude-skills

Generates and validates docstrings, OpenAPI specs, JSDoc annotations and user guides, running every code example through a real compiler or linter before reporting coverage.

Jeffallan/claude-skills

Guides C# work on .NET 8+: ASP.NET Core APIs, Entity Framework Core data access, Blazor apps and CQRS with MediatR, following a five-step build workflow.

Jeffallan/claude-skills

Tunes PostgreSQL and MySQL performance by analyzing slow queries and execution plans, designing indexes, rewriting queries and adjusting configuration, one validated change at a time.

Jeffallan/claude-skills

Builds Django apps and Django REST Framework APIs: models with indexes, ORM query optimization, serializers, viewsets and JWT authentication, with tests.

Jeffallan/claude-skills

Sets up Django 4.2+ to keep static and media files on AWS S3 through django-storages, with public and private backends, presigned URLs and CloudFront.

Jeffallan/claude-skills

Guides building .NET 8 services with minimal APIs, clean architecture, Entity Framework Core, MediatR CQRS and JWT authentication, with build and test checks.

Jeffallan/claude-skills

Directs firmware work for microcontrollers: RTOS tasks, interrupts, peripheral drivers, communication buses and power and memory limits, with hardware-level checks.

Jeffallan/claude-skills

Builds async Python APIs with FastAPI and Pydantic V2, covering endpoints, JWT authentication, async SQLAlchemy, WebSockets and pytest checks against the OpenAPI docs.

Jeffallan/claude-skills

Runs a structured requirements interview to produce a feature specification with EARS requirements, acceptance criteria and an implementation checklist.

Jeffallan/claude-skills

Guides LLM fine-tuning with LoRA and QLoRA through Hugging Face PEFT, from dataset validation and training checks to adapter merging, quantization and deployment.

Jeffallan/claude-skills

Plans and builds full-stack features with frontend, backend and security handled together, including a written design and a security checklist before any code.

Jeffallan/claude-skills

Covers game programming in Unity and Unreal Engine: ECS design, physics, multiplayer networking, shaders and profiling toward a 60 FPS target.

Jeffallan/claude-skills

Designs GraphQL schemas and Apollo Federation graphs, with DataLoader resolvers, subscriptions, query complexity limits and caching.

Jeffallan/claude-skills

Builds Spring Boot 3.x services on Java 21 with domain-driven design, WebFlux, JPA tuning and Spring Security using OAuth2 and JWT, verified by Maven or Gradle builds.

Jeffallan/claude-skills

Writes and reviews modern JavaScript: ES2023+ syntax, async/await, ESM modules, Node.js and browser APIs, with linting, leak checks and Jest tests.

Jeffallan/claude-skills

Applies idiomatic Kotlin 1.9+ patterns for coroutines and Flow, multiplatform code, Jetpack Compose on Android and Ktor servers, checked with detekt and ktlint.

Jeffallan/claude-skills

Plans incremental migrations of aging systems with the strangler fig pattern, using dependency maps, rollback plans, characterization tests and gradual traffic shifts.

Jeffallan/claude-skills

Builds and debugs MCP servers and clients in TypeScript or Python, from tool and resource definitions to transport setup and inspector-based protocol checks.

Jeffallan/claude-skills

Designs distributed systems: bounded-context service boundaries, sync and async communication, data ownership, resilience, tracing and rollout strategy.

Jeffallan/claude-skills

Designs ML pipeline infrastructure: experiment tracking with MLflow or Weights & Biases, Kubeflow and Airflow orchestration, Feast feature stores and model validation gates.

Jeffallan/claude-skills

Sets up application monitoring: structured logs, Prometheus metrics, OpenTelemetry tracing, Grafana dashboards, alert rules and load tests with k6 or Artillery.

Jeffallan/claude-skills

Scaffolds NestJS modules, controllers, services, DTOs and guards for TypeScript backends, with validation, JWT and Passport auth, Swagger docs and unit and E2E tests.

Jeffallan/claude-skills

Builds Next.js 14+ apps on the App Router with server components, server actions, explicit caching, SEO metadata, loading and error boundaries and Vercel deployment.

Jeffallan/claude-skills

Writes strictly typed modern PHP 8.3+ for Laravel, Symfony and plain projects, with PHPStan level 9, PHPUnit or Pest tests, typed DTOs and secure defaults.

Jeffallan/claude-skills

Writes and debugs Playwright end-to-end tests with page objects, role-based locators, fixtures, API mocking, traces and CI setup.

Jeffallan/claude-skills

Tunes and administers PostgreSQL: EXPLAIN-driven query tuning, index choice, JSONB, extensions, streaming or logical replication, VACUUM and pg_stat monitoring.

Jeffallan/claude-skills

Designs, tests and refines LLM prompts: zero-shot, few-shot and chain-of-thought patterns, system prompts, structured output schemas and evaluation test suites.

Jeffallan/claude-skills

Writes type-annotated Python 3.11+ with async patterns, dataclasses and pytest suites, validated with mypy in strict mode, black and ruff.

Jeffallan/claude-skills

Designs retrieval-augmented generation systems: document chunking, embeddings, vector store setup, hybrid search, reranking and retrieval evaluation, with checks at each step.

Jeffallan/claude-skills

Builds Rails 7+ apps with Hotwire Turbo Frames and Streams, Active Record tuning, Action Cable, Sidekiq jobs and RSpec specs, with migration and N+1 checks.

Jeffallan/claude-skills

Builds React 19 components in TypeScript with Server Components, useActionState forms, custom hooks and state libraries, checked with tsc and React Testing Library.

Jeffallan/claude-skills

Builds React Native and Expo apps for iOS and Android: Expo Router navigation, FlatList tuning, platform-specific code and build error recovery.

Jeffallan/claude-skills

Writes Apex, Lightning Web Components and SOQL for the Salesforce platform, with bulkified triggers, governor-limit checks, 90% test coverage and Salesforce DX deployment.

Jeffallan/claude-skills

Guides secure implementation of authentication, authorization, input validation and security headers, with password hashing, parameterized queries and OWASP Top 10 checks.

Jeffallan/claude-skills

Audits code and infrastructure for vulnerabilities and produces a severity-rated report with locations and remediation, using SAST, dependency and secrets scans plus manual review.

Jeffallan/claude-skills

Builds Shopify themes in Liquid, custom apps, Storefront API storefronts and checkout extensions, using the Shopify CLI to lint, run locally and deploy.

Jeffallan/claude-skills