> browse/registry

> gsap

Create advanced animations with GSAP. Use when building complex timelines, scroll-driven animations, SVG morphing, text animations, or high-performance web animations beyond CSS capabilities.

> spline

You are an expert in Spline, the browser-based 3D design tool that lets designers create interactive 3D scenes and export them to websites without writing code. You help teams build 3D landing pages, product showcases, animated illustrations, and interactive experiences — with Spline's visual editor for modeling, materials, animations, physics, and mouse/scroll interactions, plus export to React, vanilla JS, or embeddable iframe.

> moviepy

Edit and compose video with Python using MoviePy. Use when a user asks to programmatically edit videos, create video montages, add text overlays, build automated video pipelines, composite multiple clips, apply video effects, generate social media videos from templates, concatenate clips, extract audio, create GIFs, build slideshows, add transitions, resize and crop videos, or integrate video editing into Python applications. Covers MoviePy 2.x for compositing, effects, text, and rendering.

> tailwind-animate

Add animations to Tailwind CSS projects. Use when implementing CSS animations with Tailwind, adding entrance effects, building animated components, or creating loading spinners and skeleton screens.

> unreal-engine

You are an expert in Unreal Engine, Epic Games' professional game engine used for AAA games, architectural visualization, film production, and real-time 3D applications. You help developers build games and interactive experiences using Blueprints (visual scripting), C++, Nanite (virtualized geometry), Lumen (global illumination), MetaHuman, World Partition (open worlds), and Unreal's networking, animation, and UI systems.

> motion

You are an expert in Motion, the production-ready animation library for React (formerly Framer Motion). You help developers create fluid animations, layout transitions, scroll-linked effects, gesture interactions, shared layout animations, and exit animations — using a declarative API where animations are defined as props rather than imperative code.

> on-call-handoff-patterns

Master on-call shift handoffs with context transfer, escalation procedures, and documentation. Use when transitioning on-call responsibilities, documenting shift summaries, or improving on-call processes.

> php-language

Core PHP language standards and modern 8.x features. Use when working with PHP 8.x features like enums, fibers, readonly properties, or named arguments. (triggers: **/*.php, declare, readonly, match, constructor, promotion, types)

> axiom-scenekit-ref

SceneKit → RealityKit concept mapping, complete API cross-reference for migration, scene graph API, materials, lighting, camera, physics, animation, constraints

> product-vision

Brainstorm an inspiring, achievable, and emotional product vision that motivates teams and aligns stakeholders. Use when defining or refining a product vision, creating a vision statement, or aligning the team around a shared direction.

> common-mobile-animation

Motion design principles for mobile apps. Covers timing curves, transitions, gestures, and performance-conscious animations. (triggers: **/*_page.dart, **/*_screen.dart, **/*.swift, **/*Activity.kt, **/*Screen.tsx, Animation, AnimationController, Animated, MotionLayout, transition, gesture)

> tts-script-generator

Intelligently compress and rewrite documents into TTS-friendly scripts. Uses Claude AI to analyze content, compress to target duration, convert to spoken style with emotional language, and auto-segment. Perfect for video narration.

> visionos-immersive-media-developer

Implement immersive and spatial video experiences on Apple Vision Pro (visionOS), including RealityKit VideoPlayerComponent setup, portal/progressive/full immersive viewing modes, transitions and events, comfort mitigation, and Apple Immersive Video authoring workflows.

> manim-composer

Trigger when: (1) User wants to create an educational/explainer video, (2) User has a vague concept they want visualized, (3) User mentions "3b1b style" or "explain like 3Blue1Brown", (4) User wants to plan a Manim video or animation sequence, (5) User asks to "compose" or "plan" a math/science visualization. Transforms vague video ideas into detailed scene-by-scene plans (scenes.md). Conducts research, asks clarifying questions about audience/scope/focus, and outputs comprehensive scene specif

> axiom-uikit-animation-debugging

Use when CAAnimation completion handler doesn't fire, spring physics look wrong on device, animation duration mismatches actual time, gesture + animation interaction causes jank, or timing differs between simulator and real hardware - systematic CAAnimation diagnosis with CATransaction patterns, frame rate awareness, and device-specific behavior

> neuropixels-analysis

Neuropixels neural recording analysis. Load SpikeGLX/OpenEphys data, preprocess, motion correction, Kilosort4 spike sorting, quality metrics, Allen/IBL curation, AI-assisted visual analysis, for Neuropixels 1.0/2.0 extracellular electrophysiology. Use when working with neural recordings, spike sorting, extracellular electrophysiology, or when the user mentions Neuropixels, SpikeGLX, Open Ephys, Kilosort, quality metrics, or unit curation.

> analyzing-text-sentiment

This skill enables Claude to analyze the sentiment of text data. It identifies the emotional tone expressed in text, classifying it as positive, negative, or neutral. Use this skill when a user requests sentiment analysis, opinion mining, or emotion detection on any text, such as customer reviews, social media posts, or survey responses. Trigger words include "sentiment analysis", "analyze sentiment", "opinion mining", "emotion detection", and "polarity".

> realitykit-visionos-developer

Build, debug, and optimize RealityKit scenes for visionOS, including entity/component setup, rendering, animation, physics, audio, input, attachments, and custom systems. Use when implementing RealityKit features or troubleshooting ECS behavior on visionOS.

> slack-gif-creator

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."

> humanizer

Remove signs of AI-generated writing from text. Use when editing or reviewing text to make it sound more natural and human-written. Based on Wikipedia's comprehensive "Signs of AI writing" guide. Detects and fixes patterns including: inflated symbolism, promotional language, superficial -ing analyses, vague attributions, em dash overuse, rule of three, AI vocabulary words, negative parallelisms, and excessive conjunctive phrases. Credits: Original skill by @blader - https://github.com/blader/hu