Use this skill when working with the A2A (Agent-to-Agent) protocol - agent interoperability, multi-agent communication, agent discovery, agent cards, task lifecycle, streaming, and push notifications. Triggers on any A2A-related task including implementing A2A servers/clients, building agent cards, sending messages between agents, managing tasks, and configuring push notification webhooks.

Use this skill when working with A2UI (Agent-to-User Interface) - Google's open protocol for agent-driven declarative UIs. Triggers on tasks involving A2UI message generation, component catalogs, data binding, surface management, renderer development, custom components, or integrating A2UI with A2A Protocol, AG UI, or agent frameworks like Google ADK. Covers building agents that generate A2UI JSON, setting up client renderers (Lit, React, Angular, Flutter), creating custom catalogs, and handling client-to-server actions.

Use this skill when implementing web accessibility, adding ARIA attributes, ensuring keyboard navigation, or auditing WCAG compliance. Triggers on accessibility, a11y, ARIA roles, screen readers, keyboard navigation, focus management, color contrast, alt text, semantic HTML, and any task requiring WCAG 2.2 compliance or inclusive design.

Use this skill when managing key accounts, planning expansions, running QBRs, or mapping stakeholders. Triggers on account management, expansion playbooks, QBR preparation, stakeholder mapping, renewal strategy, upsell, cross-sell, and any task requiring strategic account planning or relationship management.

Use this skill when optimizing content for answer engines and SERP features - featured snippets (paragraph, list, table), People Also Ask (PAA) targeting, voice search optimization, knowledge panels, speakable schema, and zero-click search strategies. Triggers on winning position zero, optimizing for Google's answer boxes, voice assistant responses, or FAQ-style content optimization.

Use this skill when working with Agile and Scrum methodologies - sprint planning, retrospectives, velocity tracking, Kanban boards, story point estimation, backlog grooming, or team workflow optimization. Triggers on any task involving sprint ceremonies, agile metrics, user story writing, capacity planning, or continuous improvement processes.

Use this skill when designing AI agent architectures, implementing tool use, building multi-agent systems, or creating agent memory. Triggers on AI agents, tool calling, agent loops, ReAct pattern, multi-agent orchestration, agent memory, planning strategies, agent evaluation, and any task requiring autonomous AI agent design.

Use this skill when building dbt models, designing semantic layers, defining metrics, creating self-serve analytics, or structuring a data warehouse for analyst consumption. Triggers on dbt project setup, model layering (staging, intermediate, marts), ref() and source() usage, YAML schema definitions, metrics definitions, semantic layer configuration, dimensional modeling, slowly changing dimensions, data testing, and any task requiring analytics engineering best practices.

Use this skill when building Android applications with Kotlin. Triggers on Jetpack Compose UI, Room database, Kotlin coroutines, Play Store publishing, MVVM/MVI architecture, ViewModel, StateFlow, Hilt dependency injection, Navigation Compose, Material 3, APK/AAB builds, ProGuard, and Android app lifecycle management. Covers modern Android development with declarative UI, reactive state, structured concurrency, and production release workflows.

Use this skill when designing or implementing API monetization strategies - usage-based pricing, rate limiting, developer tier management, Stripe metering integration, or API billing systems. Triggers on tasks involving API pricing models, metered billing, per-request charging, quota enforcement, developer portal tiers, overage handling, and Stripe usage records.

Use this skill when testing REST or GraphQL APIs, implementing contract tests, setting up mock servers, or validating API behavior. Triggers on API testing, Postman, contract testing, Pact, mock servers, MSW, HTTP assertions, response validation, and any task requiring API test automation.

Use this skill when securing web applications, preventing OWASP Top 10 vulnerabilities, implementing input validation, or designing authentication. Triggers on XSS, SQL injection, CSRF, SSRF, broken authentication, security headers, input validation, output encoding, OWASP, and any task requiring application security hardening.

Use this skill when designing backend systems, databases, APIs, or services. Triggers on schema design, database migrations, indexing strategies, distributed systems architecture, microservices, caching, message queues, observability setup, logging, metrics, tracing, SLO/SLI definition, performance optimization, query tuning, security hardening, authentication, authorization, API design (REST, GraphQL, gRPC), rate limiting, pagination, and failure handling patterns. Acts as a senior backend engineering advisor for mid-level engineers leveling up.

Use this skill when designing chart of accounts, automating reconciliation, managing AP/AR processes, or streamlining month-end close. Triggers on chart of accounts, bank reconciliation, accounts payable, accounts receivable, month-end close, journal entries, accruals, and any task requiring bookkeeping process design or automation.

Use this skill when defining brand positioning, voice and tone guidelines, brand architecture, or storytelling frameworks. Triggers on brand positioning, brand voice, tone guidelines, brand architecture, brand story, messaging hierarchy, competitive positioning, and any task requiring brand strategy development or documentation.

Use this skill when building budgets, conducting variance analysis, implementing rolling forecasts, or allocating costs. Triggers on FP&A, budgeting, variance analysis, rolling forecasts, cost allocation, headcount planning, department budgets, and any task requiring financial planning or budget management.

Use this skill when implementing chaos engineering practices, designing fault injection experiments, running game days, or improving system resilience. Triggers on chaos engineering, fault injection, Chaos Monkey, Litmus, game days, resilience testing, failure modes, blast radius, and any task requiring controlled failure experimentation.

Use this skill when setting up CI/CD pipelines, configuring GitHub Actions, implementing deployment strategies, or automating build/test/deploy workflows. Triggers on GitHub Actions, CI pipeline, CD pipeline, deployment automation, blue-green deployment, canary release, rolling update, build matrix, artifacts, and any task requiring continuous integration or delivery setup.

Use this skill when designing, reviewing, or refactoring software architecture following Robert C. Martin's (Uncle Bob) Clean Architecture principles. Triggers on project structure decisions, layer design, dependency management, use case modeling, boundary crossing patterns, component organization, and separating business rules from frameworks. Covers the Dependency Rule, concentric layers, component cohesion/coupling, and boundary patterns.

Use this skill when building command-line interfaces, designing CLI argument parsers, writing help text, adding interactive prompts, managing config files, or distributing CLI tools. Triggers on argument parsing, subcommands, flags, positional arguments, stdin/stdout piping, shell completions, interactive menus, dotfile configuration, and packaging CLIs as npm/pip/cargo/go binaries.