Mandatory excellence gates for Grok+ACOS. verification-loop, santa-method, gstack-qa, plan-reviews, repo-mastery, cso, rules-distill. Never ship without evidence (gstack screenshots, metrics). Use on any build/suggest/lead task.
Sequences film and short-form narrative work and defines the finish line. Use FIRST for any film, short, series episode, trailer, or narrative video work — before writing a script, designing a shot, or generating a single frame. Also use when asked to review, certify, or ship a cut. Refuses to certify without evidence.
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…
Apple's approach to interface design and fluid, physical motion, translated for the web. Use when building or reviewing gesture-driven UI, spring animations, drag/swipe/sheet interactions, momentum and interruptible transitions, translucent materials and depth, typography (optical sizing, tracking, leading)…
Measure and hold a real performance budget on a web page — LCP, INP, CLS, bundle weight, font and image loading. Use when a change touches images, fonts, above-the-fold markup, client components, third-party scripts, or any list that can grow; when a page feels slow; or before shipping a new landing page or hero.…
This skill encodes Emil Kowalski's philosophy on UI polish, component design, animation decisions, and the invisible details that make software feel great.
Search a codebase or UI for places that don't animate but should, and reject everything that shouldn't. Read-only; it proposes motion with exact values, it does not implement it. Use when the user asks "what could be animated here?" or wants to "make this feel more alive". For fixing existing animations, use…
Elite website image-to-code skill for Codex. For visually important web tasks, it must first generate the design image(s) itself, deeply analyze them, then implement the website to match them as closely as possible. In Codex, it must prefer large, readable, section-specific images instead of tiny compressed boards…
Survey a codebase's animation and motion code as a senior motion advisor, then produce a prioritized audit and self-contained implementation plans for other agents (or cheaper models) to execute. Read-only on source code — it plans improvements, it does not apply them. Use when the user asks to "improve the…
Reviews animation and motion code against a high craft bar derived from Emil Kowalski's design engineering philosophy. Default to flagging; approval is earned.
Capture before/after screenshot evidence of a web page at real breakpoints (375, 768, 1440) in both light and dark themes, using Playwright against a local dev server or a deployed URL. Use before starting any visual change to capture the current state, and again after to prove the delta. Also use when asked to "show…
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
The sequencing contract for any website or web-design work — new page, landing page, hero, redesign, component, layout, styling, motion, or visual polish on a web surface. Use whenever a task will change what a site looks like, feels like, moves like, or how it is interacted with, including any edit to…
One or two sentences that say WHAT this skill does AND WHEN the agent should load it. Write in the third person, name concrete tasks, and include trigger keywords a user would actually say. Example: "Generate professional release notes from a git history. Use when cutting a release, drafting a changelog, or…
The operating contract for any scheduled or unattended agent session — a cron job, a Routine, a CI-triggered agent, a nightly sweep. Use when writing, reviewing, debugging or scheduling automation that runs without a human present, and whenever a scheduled job reports success but you cannot find what it produced.…
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At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: