strudel-sound-design
The craft of synthesis for electronic music — subtractive signal flow (osc → filter → amp), waveform character and when to use each, ADSR + filter envelopes for movement, FM synthesis and harmonicity ratios, detune/unison for width, sub/body/air layering, saturation and "expensive" sound. Use when a synth sounds thin, cheap, or static; when you need to design a pad / bass / lead / pluck; when FM tones are wanted; when someone says "fatten it", "add movement", "make it breathe", or "the filter sounds dead". Complements [[strudel-effects]] (filter/reverb mechanics) and [[strudel-pro-tips]] (the shortlist of high-leverage moves).
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animation-vocabulary
emilkowalski/skills
Reverse-lookup glossary that turns a vague description of a web animation or motion effect into its exact term ("the bouncy thing when a popover opens" → Pop in; "the iOS rubber-band scroll" → Rubber-banding). Use when the user asks "what's it called when…", or describes a motion effect without knowing its name and wants the right word to prompt an AI or designer with. For naming an effect, not designing or building one.
xcode-project-setup
firebase/agent-skills
Safely modifies Xcode projects (.pbxproj) to add Swift Packages and link files. Use this skill whenever an iOS project needs dependencies installed (e.g. Firebase, Alamofire).
cross-border-ecommerce
nexscope-ai/ecommerce-skills
Cross-border e-commerce expansion advisor. Scores target markets on 8 weighted dimensions (market size, ecommerce penetration, competition, regulatory complexity, logistics infrastructure, payment ecosystem, cultural distance, IP protection), compares 5 fulfillment models with cost and transit data, provides country-by-country tax/duty compliance guides (EU VAT/IOSS, UK VAT, US sales tax, CA GST, AU GST, JP consumption tax), maps local payment preferences by market, and builds a phased expansion roadmap. No API key required.
