Unit Testing

Use when segmenting time-series into regimes, detecting structural breaks, or constructing context sets for few-shot learning. Covers GP-CPD algorithms, Matérn kernels, likelihood ratio tests, regime identification, market state transitions, volatility regime changes, and trend reversals in financial markets.

Guide developers through mutation testing to assess and improve test suite quality

Use when encountering bugs, test failures, unexpected behavior, errors, or performance problems - dispatches systematic-debugging-agent that enforces 4-phase process (root cause investigation, pattern analysis, hypothesis testing, implementation) to prevent quick-fix attempts and ensure proper debugging

Expert deployment automation for cloud platforms. Handles CI/CD pipelines, container orchestration, infrastructure setup, and production deployments with battle-tested configurations. Specializes in GitHub Actions, Docker, HuggingFace Spaces, and GitHub Pages.

Document placement rules, visibility protocols, and timeline test (before-code vs after-code). Defines where documentation belongs (dev/docs/ vs coordination/), documentation-first PR protocol, and phase artifact placement. Critical for documentation organization and visibility.

Orquestrador de tarefas que coordena agentes especializados. Ativado automaticamente quando um plano de tarefa é aprovado pelo usuário ou quando o usuário fala "orquestre a tarefa", "orquestrar tarefa", "inicie a orquestração". NÃO ativar no modo plano. Delega para dev-executor-senior-enterprise (implementação), playwright-manual-tester (testes manuais) e qa-architect-senior (testes em escala). NUNCA executa tarefas diretamente - apenas orquestra.

Ensure quality through testing, documentation, and security audits. Use when asked to add tests, improve test coverage, update documentation, write docs, security audit, review safety rules, or verify protected paths are not touched.

Evaluate skills by executing them across sonnet, opus, and haiku models using sub-agents. Use when testing if a skill works correctly, comparing model performance, or finding the cheapest compatible model. Returns numeric scores (0-100) to differentiate model capabilities.

Use when editing ANY zellij configuration including layouts, swap layouts, keybindings, or zjstatus plugin. Provides rules for powerline characters, VHS testing, and verification.

Rev - Senior Full-Stack Code Reviewer with 12+ years experience in Java/Kotlin and TypeScript/React. Use when reviewing code quality, checking security vulnerabilities, validating style compliance, running static analysis tools, or ensuring test coverage. Also responds to 'Rev' or /rev command.

Automatically generate and execute Python test scripts from OpenAPI specifications

Implement test-driven development (TDD) practices. Write tests first, then implementation.

Hypothesis-driven debugging through observe, hypothesize, test, narrow. Use when something is wrong and you need to find why.

Expert iOS App Store submission and approval system. 9 specialized agents providing senior App Review Team-level expertise across compliance, design, privacy, monetization, metadata, technical requirements, timing, rejection recovery, and learning. Triggers on keywords like app store, iOS submission, apple review, app rejection, aso, privacy manifest, privacy labels, ATT, iap, in-app purchase, subscription, storekit, review guidelines, HIG, testflight, app store connect.

Write comprehensive unit tests for Visual Layout Builder using Vitest. Use when creating tests for lib/ functions, schema validation, canvas utilities, or any business logic. Follows AAA pattern and project testing conventions.

Schedule recurring background tasks in rwsdk/Cloudflare Workers - cron syntax, setup, local testing, and patterns for cleanup, metrics, billing, and maintenance

Expert Golang senior/lead developer dengan 20+ tahun pengalaman. Gunakan skill ini ketika bekerja dengan Go/Golang projects untuk membuat kode clean, maintainable, scalable, struktur folder production-grade, Docker containerization, debugging, mendeteksi celah crash/bug/race condition, code review standar senior engineer, testing strategies, performance optimization, dan library selection battle-tested. Trigger keywords include golang, go, docker, microservice, api, backend, clean code, refactor, debugging.

Agent SDK development utilities for creating, testing, and managing AI agents with comprehensive tooling and debugging capabilities.

Guide experienced developers through RED phase of TDD cycle - writing failing tests

Data quality testing with dbt tests, Great Expectations, and monitoring.