claude-skills

Expert guide for prompting ByteDance's Seedance 2.0 AI video model (text-to-video, image-to-video, first/last-frame, multi-reference, and multi-shot generation with native synchronized audio). Use when the user wants to write, improve, or debug a Seedance 2.0 prompt; plan a shot; work with reference images/videos/audio; animate a start frame or interpolate first-and-last frames; direct camera moves, motion, and cinematic style; generate dialogue, sound effects, or music; keep a character consistent across shots; or understand Seedance 2.0's capabilities, specs, API model IDs, limits, and access routes (Dreamina, Volcano Ark, BytePlus, fal.ai, Replicate). Triggers on "Seedance", "Seedance 2.0", "ByteDance video model", "Dreamina video", "seedance prompt", "reference-to-video", "first and last frame video".

Use Hermes Tweet with Hermes Agent for X/Twitter endpoint discovery, public reads, private action-gated reads, audience analysis, thread planning, and guarded publishing. Use when a project needs Hermes-native social research or publishing workflows.

Improve any existing Claude Code skill, CLAUDE.md, subagent definition, slash-command, or prompt markdown file by combining web-researched best-practice rewrites with autonomous Karpathy-style binary eval loops. Use when the user wants to "auto-research", "self-improve", "auto-improve", "optimize", "modernize", or "research-improve" any existing SKILL.md, CLAUDE.md, agent file under .claude/agents/, slash-command file under .claude/commands/, or any prompt markdown file. Triggers on phrases like "use auto-research to improve skill X", "auto-improve this CLAUDE.md", "research best practices and rewrite Y", or "self-research and optimize this agent". Researches authoritative sources (Anthropic docs, anthropic.com engineering blog, anthropics/skills GitHub) in parallel sub-agents, proposes a cited rewrite, runs an autonomous binary-assertion eval loop with git commit and reset bookkeeping for testable artifacts, and asks the user to confirm only at the end with a before-and-after score and full source list.

Generate images using Google Gemini via Chrome browser automation. This skill should be used when the user wants to create, generate, or produce images with Gemini, Google AI, or Imagen. Supports resolution control (0.5K, 1K, 2K, 4K), aspect ratios, up to 14 reference images, style transfer, text rendering, image editing, and inpainting. Automatically downloads generated images and moves them to the desired location. Triggers on requests like "generate an image", "create a picture with Gemini", "make me a 4K image", or "use Gemini to create artwork".

Synthesize and render MIDI/MusicXML files to audio (WAV/MP3) and generate Strudel live-coding patterns for creative music manipulation. Uses analysis data (tempo, key, chords, dynamics) from audio-to-midi for intelligent ghost-note removal and accurate reproduction. Two workflows: (1) Convert MIDI/MusicXML to Strudel/TidalCycles code with note durations for interactive tweaking in the browser at strudel.cc, (2) Render MIDI/MusicXML to WAV/MP3 with FluidSynth or built-in synthesis, with controls for tempo, transposition, instrument override, and ghost-note cleaning. Trigger when the user wants to: play a MIDI file, render MIDI to audio, synthesize MIDI, convert MIDI to Strudel code, create live-coding patterns from MIDI, change instruments, transpose or tempo-shift, clean ghost notes, or any MIDI playback/synthesis task.

Programmatically generate Unreal Engine 5.x Blueprint and Widget Blueprint .uasset files from C++. Use when building a content generator for Fab/Marketplace samples, Quick-Start kits, tutorial assets, or editor utilities that mass-produce Blueprints, Widget Blueprints with UMG animations, or domain assets (dialogue, quest, ability data). Covers UBlueprint creation with full event-graph authoring (UK2Node_*, FBlueprintEditorUtils), UWidgetBlueprint hierarchies, UWidgetAnimation with MovieScene tracks and keyframes, two-pass compile, and the K2Node spawn idiom. Triggers on "create a Blueprint generator", "generate WBP from C++", "programmatically author event graph", "build dialogue/quest assets from code", "editor utility to generate marketplace samples", or any task involving FKismetEditorUtilities::CreateBlueprint, UWidgetBlueprintFactory, FBlueprintEditorUtils::AddMemberVariable, or UMovieScene2DTransformTrack.

Download videos from Instagram, YouTube, TikTok, Twitter/X, Facebook, and 1000+ other platforms as MP4 files using yt-dlp. Auto-recovers from YouTube bot detection ("Sign in to confirm you're not a bot", LOGIN_REQUIRED) by rotating through browser cookies and cookie files without manual intervention. Use this skill when the user wants to download, save, or grab one or more videos from any social media or video platform URL. Supports single videos or full playlists, configurable resolution, and saving to a specified target folder.

Downloads videos from URLs and generates a Markdown summary for each one using the Gemini API. Supports custom prompts to extract specific information instead of the default summary. Each video is saved in its own subfolder containing the MP4 file and a summary.md. Use this skill when the user provides video URLs directly, or a file (Markdown, TXT, or any text file) containing video URLs, and wants both the video downloaded and summarized. Triggers on requests like "download and summarize these videos", "fetch these links and summarize", "process this list of video links", "extract X from these videos", or when given a file with URLs and asked for summaries. Supports Instagram, YouTube, TikTok, Twitter/X, Facebook, and 1000+ other platforms. Requires GEMINI_API_KEY environment variable.

Analyzes local MP4 video files using the Gemini API and generates structured Markdown summaries. Supports custom prompts to extract specific information instead of the default summary. Use when the user wants to summarize, analyze, or extract key points from video files in bulk. Triggers on requests like "summarize my videos", "create markdown summaries for the videos", "analyze videos with Gemini", "generate video summaries", or "extract X from my videos". Requires GEMINI_API_KEY environment variable set in the system.

Generate 2D pixel art game assets using Google Gemini via Chrome browser automation. Triggers when the user wants to create pixel art, game sprites, tilesets, game assets, or edit existing game art. Supports reference image uploads for style consistency, model selection (Flash/Pro), resolution control, automatic background removal (chroma key, ML-based via BiRefNet, or Adobe Express), and rasterization to exact pixel dimensions. Use for requests like "create a pixel art sword", "generate a 32x32 character sprite", "make a tileset", or "edit this sprite".

Extracts any Anthropic Academy (Skilljar) course into a structured markdown folder. Triggers when the user provides an anthropic.skilljar.com URL and asks to extract, research, download, or convert a course to markdown. Produces one markdown file per lesson organized into section folders, with course diagrams downloaded and described. Use when user says things like "extract this course", "convert to markdown", "deep research this skilljar link", or provides any anthropic.skilljar.com URL.

Convert MP3/WAV/FLAC audio files to MIDI (.mid) and MusicXML (.musicxml) with full music analysis. Two engines: Basic Pitch (general-purpose polyphonic) and Piano Model (high-accuracy piano, 96.7% F1). Optional Demucs stem separation. Use --engine piano for piano/keyboard music for best results. Trigger when the user wants to: transcribe audio to MIDI, convert music to sheet music/notes, extract notes from audio, get MusicXML from a recording, analyze tempo/key/chords of a song, separate stems (vocals/drums/bass) and transcribe each, or any audio-to-notation task. Also triggers for requests like "convert this MP3 to MIDI", "get the notes from this song", "what key is this song in", "transcribe this audio", "separate and transcribe stems".

Generate speech, podcasts, voiceovers, and multi-speaker dialogue with Google AI Studio's Gemini Flash TTS by driving the live web app in Chrome via the claude-in-chrome MCP server. Use whenever the user asks to (1) create a podcast, audiobook chapter, narration, audio drama, or voiceover with Gemini / Google AI Studio TTS; (2) turn a script into multi-speaker audio (e.g. "two-host podcast", "Speaker 1 / Speaker 2 dialogue", "Puck and Zephyr"); (3) tweak a TTS prompt with Scene, Sample Context, Director's note (Style/Pace/Accent), Audio Profile, voice picker, or Temperature; or (4) render audio with inline tags like [enthusiastic], [whispers], [laughs]. Triggers on phrases like "use AI Studio TTS", "generate this podcast in AI Studio", "render with gemini-3.1-flash-tts-preview", "speak this with Aoede/Puck/Zephyr", or any request for browser-driven Gemini speech generation.

Invoke OpenCode CLI as a sub-agent to leverage alternative AI models (GPT-5.x, Codex, local models) for code implementation, review, debugging, research, and second opinions. Use when the user asks to "use opencode", "get a second opinion from GPT/Codex", "implement with opencode", "review with opencode", "let opencode handle this", "use a different model", or wants cross-model validation. Also triggers when the user explicitly names an OpenCode model (e.g., "use gpt-5.4", "use codex") or wants to delegate a task to a non-Claude AI system. Supports all providers configured in the user's OpenCode installation (OpenAI, GitHub Copilot, local models via Ollama/LM Studio, and OpenCode's own free-tier models).

Build production-grade landing pages for software/CLI tools, developer libraries, and technical products. Uses the "Maxsim-style" design system: dark theme, blue accent glows, framer-motion animations, geometric hero grid, marquee tech stack, tabbed docs, and timeline how-it-works sections. Trigger when user says "create a landing page for my software", "build a product site", "make a landing page like maxsim-flutter", "developer landing page", or "CLI tool website". Stack: Vite + React + TypeScript + Tailwind CSS v4 + Framer Motion + Lucide React.

Guide for Unreal Engine 5.x PCG (Procedural Content Generation) Python integration. Covers the PCGPythonInterop plugin, the Execute Python Script node, PCG Python API (PCGComponent, PCGBlueprintElement, PCGSpatialData, PCGPointData), editor automation, custom PCG nodes via Python, and known limitations. Use when the user asks about PCG Python, PCGPythonInterop, Execute Python Script node, Python scripting for procedural generation, automating PCG graphs with Python, or creating custom PCG nodes with Python/Blueprint.

Guide for llama.cpp, the C/C++ LLM inference framework by ggml-org. Covers the C API (llama.h), GGUF format, quantization (Q4_K_M, Q8_0, IQ4_XS), CMake builds, GPU backends (CUDA, Vulkan, Metal, ROCm), HTTP server with OpenAI-compatible API, embeddings, grammar constraints, function calling, LoRA, speculative decoding, multimodal, and UE5 integration. Use when: llama.cpp, GGUF models, local LLM inference, llama.h, llama-server, quantizing, ggml, building/linking llama.cpp, GPU acceleration, llama.cpp embeddings, grammar/JSON output, llama.cpp in Unreal Engine, llama_* API functions, GGUF format, converting HuggingFace to GGUF, or comparing with vLLM/Ollama/TensorRT-LLM.

Comprehensive best practices guide for modern Unreal Engine 5.x development. Covers Epic's strategic direction toward modern systems (GAS, Enhanced Input, StateTree, MetaSounds, Niagara, PCG, CommonUI, World Partition, Game Feature Plugins, Gameplay Tags), the "research first" philosophy of always checking for newer UE systems before implementing, C++ vs Blueprint decision making, data-driven design, asset management, project organization, naming conventions, performance optimization, and debugging with Unreal Insights. Use when the user asks about UE best practices, modern UE5 workflows, which system to use, old vs new UE systems, recommended approaches, project setup, code organization, performance tips, Blueprint vs C++ decisions, naming conventions, or when starting a new feature and needing guidance on the right UE system to use. Also triggers when the user asks whether there is a newer/better way to do something in Unreal Engine, or when comparing legacy systems against modern replacements. Covers depre

Expert guide for Unreal Engine 5.x Gameplay Ability System (GAS) C++ development. Covers AbilitySystemComponent, GameplayAbilities, GameplayEffects, Attributes/AttributeSets, GameplayTags, GameplayCues, AbilityTasks, prediction/replication, and common patterns. Use when the user asks about GAS, gameplay abilities, gameplay effects, attribute sets, ability system component, gameplay tags in the context of GAS, gameplay cues, ability tasks, or any UAbilitySystemComponent / UGameplayAbility / UGameplayEffect / UAttributeSet related C++ code. Also triggers for questions about ability prediction, ability replication, combo systems using GAS, cooldowns, costs, stacking, or damage/healing pipelines built on GAS.

Expert guide for integrating third-party C/C++ libraries into Unreal Engine 5.x projects and plugins. Covers static linking, dynamic linking (DLL/SO/dylib), Build.cs configuration, ModuleType.External, delay loading, runtime dependency staging, wrapping patterns, cross-platform considerations (Windows/macOS/Linux), ABI compatibility, RTTI/exceptions, header inclusion with THIRD_PARTY_INCLUDES_START/END, and common pitfalls. Use when the user asks about adding external libraries, third-party code, linking .lib/.a/.dll/.so/.dylib files, Build.cs PublicAdditionalLibraries, PublicDelayLoadDLLs, RuntimeDependencies, ModuleType.External, wrapping a C++ library for UE, FPlatformProcess::GetDllHandle, cross-compiling libraries for UE on Linux, or troubleshooting linker errors / DLL load failures with third-party code.