Validate Android UI behavior with Compose UI tests, Espresso-style checks, screenshot assertions, and accessibility verification.

Profile and improve Compose recomposition, layout, scrolling, startup, and rendering performance in Android apps.

Profile and improve Compose recomposition, layout, scrolling, startup, and rendering performance in Android apps.

Analyze a GitHub pull request including diff, comments, related issues, and local code context

Analyze and optimize Python code performance in critical paths

Triage, plan, and implement a fix or feature for a GitHub issue end-to-end

Loops's UI design system. Use when building interfaces inspired by Loops's aesthetic - light mode, Inter font, 4px grid.

GitHub's UI design system. Use when building interfaces inspired by GitHub's aesthetic - dark mode, Inter font, 4px grid.

External API integration and webhook handling including HTTP endpoint routing, request/response handling, authentication, CORS configuration, and webhook signature validation

Expert in D-Bus IPC (Inter-Process Communication) on Linux systems. Specializes in secure service communication, method calls, signal handling, and system integration. HIGH-RISK skill due to system service access and privileged operations.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.

Create, edit, build, and review a custom WordPress Gutenberg block plugin inside a Studio-backed site.

Create, edit, build, and review a custom WordPress Gutenberg block plugin inside a Studio-backed site.

Create, edit, build, and review a custom WordPress Gutenberg block plugin inside a Studio-backed site.

Design a product-led growth strategy for your product — classify your PLG motion, define activation and monetization architecture, choose distribution channels, plan the PLG-to-sales bridge, and build defensibility. Incorporates AI-era shifts in distribution, pricing, and user expectations. Use when building or overhauling a growth strategy.

Write a weekly stakeholder update on a core pillar or initiative — metrics, bets in progress, customer quotes, and highlights. Use when you need to keep leadership and cross-functional partners informed on what's shipping and what's moving.

Summarize experiment results, call a winner, and draft a stakeholder-ready recommendation. Use when an A/B test is complete and you need to communicate results.

Define a North Star Metric and its input metrics. Classify the game your product plays, evaluate candidates against quality criteria, and build a connected metric system. Use when choosing a North Star, evaluating an existing one, or setting up a metrics framework.

Decompose a top-line metric into a quantified metric tree with mathematical relationships, size each node, and identify where the real leverage is. Use when a PM needs to understand what drives a metric, where to focus, or where NOT to focus.

React/TypeScript frontend development rules including type safety, component design, state management, and error handling. Use when implementing React components, TypeScript code, or frontend features.