skills

Malaysia Waktu Solat (prayer times) API integration for coding agents. Teaches the correct base URL, OpenAPI endpoints, JAKIM zone codes, GPS zone resolution, V1 vs V2 response shapes, and PDF timetable downloads via api.waktusolat.app. Use when fetching or integrating prayer times, resolving Selangor/KL/Johor/Sabah zone codes, calling /v2/solat or /zones, building solat widgets, or fixing wrong Waktu Solat API paths. Trigger on "waktu solat", "prayer times Malaysia", "JAKIM zone", "SGR01", "api.waktusolat", or "e-solat".

General-purpose A/B testing (split testing) for any project built or maintained by coding agents: websites, web apps, mobile apps, dashboards, and edge/serverless stacks. Covers hypothesis design, sample-size math, stack-aware variant implementation, event tracking, low-traffic alternatives, pre-flight review, honest analysis, and ship-or-no-ship decisions. Use whenever the user wants to test a UI/UX change, compare two versions of a page, feature, button, headline, onboarding flow, pricing display, or copy; run an experiment or split test; do conversion rate optimization; or asks "which version performs better" or "should I change this" — even without saying A/B test. Also covers agent-specific advantages: reading the actual codebase to produce mergeable variants, persona pre-flight before spending traffic, wiring bucketing logic, and writing statistical analysis when results arrive. Works across Next.js, React, Vue, Workers, React Native, and greenfield repos with no prior experiment setup.

Designs and implements conversion tracking for agent-built projects — websites, web apps, mobile apps, and edge stacks. Detects existing analytics vendors, maps funnels, designs event taxonomy, wires stack-aware tracking, verifies events fire correctly, and establishes baseline rates for experiments. Use when setting up analytics, conversion tracking, funnel events, goal tracking, event naming, PostHog/GA4/Plausible/Mixpanel instrumentation, or preparing metrics before A/B tests. Trigger on "track conversions," "set up analytics events," "event taxonomy," "funnel tracking," "baseline conversion rate," or "wire tracking for experiments."