Testing
Unit tests, integration tests, test automation
popup-cro
by VladimirBrejcha
When the user wants to create or optimize popups, modals, overlays, slide-ins, or banners for conversion purposes. Also use when the user mentions "exit intent," "popup conversions," "modal optimization," "lead capture popup," "email popup," "announcement banner," or "overlay." For forms outside of popups, see form-cro. For general page conversion optimization, see page-cro.
page-cro
by VladimirBrejcha
When the user wants to optimize, improve, or increase conversions on any marketing page — including homepage, landing pages, pricing pages, feature pages, or blog posts. Also use when the user says "CRO," "conversion rate optimization," "this page isn't converting," "improve conversions," or "why isn't this page working." For signup/registration flows, see signup-flow-cro. For post-signup activation, see onboarding-cro. For forms outside of signup, see form-cro. For popups/modals, see popup-cro.
swiftui-simulator-ui
by VladimirBrejcha
Run SwiftUI apps in iOS Simulator and capture screenshots for visual verification. Use when building UI, reviewing layouts, validating designs, or when you need to see what SwiftUI code looks like. Essential for any UI work requiring visual feedback.
growth-experimenter
by daffy0208
Run systematic growth experiments to increase acquisition, activation, retention, and revenue. Use when optimizing conversion funnels, running A/B tests, improving metrics, or when users mention growth, experimentation, optimization, or scaling user acquisition.
quality-auditor
by daffy0208
Comprehensive quality auditing and evaluation of tools, frameworks, and systems against industry best practices with detailed scoring across 12 critical dimensions
Quality Assurance
by daffy0208
Comprehensive quality assurance combining testing strategy, code quality enforcement, and validation gates. Consolidated from testing-strategist, code-quality-enforcer, and validation-gate-checker.
Prototype Designer
by daffy0208
Create interactive prototypes, design user flows, implement prototype testing strategies, and manage handoff to development. Validate ideas before building.
plugin-creator
by kdoronin
Comprehensive plugin development skill for Claude Code. Analyzes business requirements and creates complete plugins including MCP servers, skills, slash commands, or combinations thereof. Supports TypeScript, Python, and any other language. Provides architecture guidance, templates, and end-to-end implementation.
webapp-testing
by AutumnsGrove
"Professional web application testing and automation using Playwright with support for multiple browsers, mobile emulation, screenshot capture, network interception, and comprehensive test assertions. Use for: (1) E2E testing across browsers, (2) UI automation, (3) Form testing and validation, (4) Visual regression testing, (5) API mocking and interception, (6) Mobile responsive testing"
code-reviewer
by AutumnsGrove
"Automated code review with security scanning, quality metrics, and best practices analysis. Use when reviewing code for: (1) Security vulnerabilities and common attack vectors, (2) Code quality issues and maintainability concerns, (3) Performance bottlenecks and optimization opportunities, (4) Best practices and design patterns, (5) Test coverage and testing strategies, (6) Documentation quality and completeness"
prompt-engineering
by sebnow
"Use when writing or improving any LLM prompts. Applies TDD methodology and research-backed practices (Meincke 2025): test don't assume, measure baseline, iterate rigorously. Prevents assuming universal techniques work. Includes persuasion principles for compliance. Triggers: 'write a prompt', 'improve prompt', 'prompt not working', general prompting, application development."
systematic-debugging
by sebnow
"Required for any bug, error, test failure, or unexpected behavior. Enforces root cause investigation before fixes through 4-phase framework. Prevents random fix attempts and ensures evidence-based debugging. Auto-invokes on: test failures, errors, crashes, 'not working', performance issues."
fractal-tree-file-structure
by kachkaev
"Guides file and folder organization using fractal tree structure: self-similar directories, encapsulation, shared/ folders, mini-library pattern, and kebab-case naming. Use when creating, moving, or renaming files, extracting modules into subdirectories, deciding where shared code belongs, or checking import boundaries."
verification-before-completion
by sebnow
"MUST load after making code changes and before claiming done. Run the project build/test command and confirm exit 0 before any completion claim, commit, or push. If verification fails, use the diagnostic output to fix the problem and re-verify. Triggers: editing source files, writing code, modifying config, making changes, implementing features, fixing bugs."
method-transfer-engine
by Data-Wise
Six-phase protocol for adapting methods across research domains
identification-theory
by Data-Wise
DAG and potential outcomes frameworks for causal mediation identification
asymptotic-theory
by Data-Wise
M-estimation, influence functions, and semiparametric efficiency theory for causal inference
simulation-architect
by Data-Wise
Design and implementation of comprehensive simulation studies
gadget-best-practices
by gadget-inc
Best practices for building with Gadget. Use when developers need guidance on models, actions, routes, access control, Shopify/BigCommerce integrations, frontend patterns, API usage, permissions, or framework decisions. Triggers "model", "action", "route", "permission", "access control", "multi-tenancy", "Shopify", "BigCommerce", "frontend", "API client", "filter", "pagination", "webhook", "background job"
spec-driven
by adeonir
Specification-driven development with structured phases: Initialize, Plan, Tasks, Implement+Validate. Creates structured feature specs with traceability to requirements. Use when: starting projects, planning features, implementing with verification, or tracking decisions across sessions. Triggers on "map codebase", "initialize", "initialize project", "create feature", "plan", "tasks", "implement", "validate", "archive".
json-utils
by dozybot001
Validate, format, and structure JSON output. Use when task output format is JSON, or when producing structured data (lists, configs, API responses). Ensures valid JSON and correct schema. Essential for FormatTask output spec format: JSON.
monorepo-ci-optimizer
by patricio0312rev
Optimizes CI pipelines for monorepos by detecting affected packages/apps and running only necessary builds and tests. Includes Turborepo/Nx strategies, caching, and parallel execution. Use for "monorepo CI", "affected detection", "incremental builds", or "workspace optimization".
prompt-regression-tester
by patricio0312rev
Compares old vs new prompts across test cases with diff summaries, stability metrics, breakage analysis, and fix suggestions. Use for "prompt testing", "A/B testing prompts", "prompt versioning", or "quality regression".
argocd-helm
by mujez
ArgoCD and Helm expert skill. Use when deploying applications with ArgoCD, creating or reviewing Helm charts, designing GitOps workflows, managing ApplicationSets, multi-cluster deployments, progressive delivery with Argo Rollouts, troubleshooting sync issues, secrets management (SOPS, External Secrets Operator), and Kubernetes manifest management. Covers ArgoCD 3.x and Helm 3.x best practices.