Visualize
openclaw/openclaw
Create inline visuals for code and explanations, or author persistent OpenClaw dashboard widgets with showwidget.
The Art window — the playing track's cover, its star rating, and 30 Core Image GPU effects (VIS) that transform the cover with the audio.
Custom licenceAuto-check passed
Install Album Art Visualizer
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ad-repo/nullplayer album-art-visualizer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/album-art-visualizer .claude/skills/album-art-visualizer && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .claude/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ad-repo/nullplayer album-art-visualizer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/album-art-visualizer .agents/skills/album-art-visualizer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .agents/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ad-repo/nullplayer album-art-visualizer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/album-art-visualizer .cursor/skills/album-art-visualizer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .cursor/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ad-repo/nullplayer.git --path skills/album-art-visualizer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ad-repo/nullplayer album-art-visualizer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/album-art-visualizer .gemini/skills/album-art-visualizer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .gemini/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ad-repo/nullplayer album-art-visualizerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/album-art-visualizer .github/skills/album-art-visualizer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .github/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ad-repo/nullplayer --skill album-art-visualizer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ad-repo/nullplayer album-art-visualizer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ad-repo/nullplayer.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/album-art-visualizer .opencode/skills/album-art-visualizer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "album-art-visualizer" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/album-art-visualizer into .opencode/skills/album-art-visualizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "album-art-visualizer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
album-art-visualizer- GitHub stars
- 158
- Token cost
- ~1.6k tokens
- SKILL.md length
- 810 words
- Files
- 1
- Skills in repo
- 40
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
The Art window — the playing track's cover, its star rating, and 30 Core Image GPU effects (VIS) that transform the cover with the audio.
- Changing the Art window
- SKILL.md covers Opening it, Using it, Effects (30) and How it works, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Its place in the window stack and skin families
What it does
Album Art Visualizer is an agent skill from ad-repo/nullplayer. The Art window — the playing track's cover, its star rating, and 30 Core Image GPU effects (VIS) that transform the cover with the audio. Use when changing the Art window, its effects, intensity, keys, menu, rating, artwork source, sizing, or its place in the window stack and skin families.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: nullPlayer is a free open source macOS media player with some unique features.
When your agent uses it
- Changing the Art window
- Its place in the window stack and skin families
Example prompts
- “/album-art-visualizer”
What it can do on your machine
Read from SKILL.md and the folder at commit 3d87ce1. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Album Art Visualizer loads about 1.6k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 810 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 810 words (~1,638 tokens).
“A sub-window that follows the playing track: its cover, a star rating, and the VIS effects. It replaced the Library Browser's ART mode (M10, 2026-10). The browsers have no art view and no ART button any more.”
- name
- album-art-visualizer
Files
Just SKILL.md in skills/album-art-visualizer of ad-repo/nullplayer.
Open the folder on GitHubat commit 3d87ce1
Compare with similar skills
Album Art Visualizer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Album Art Visualizer this skillad-repo/nullplayer | 158 | — | ~1.6k | Automated safety check: Pass | Custom licence | |
| Visualizeopenclaw/openclaw | 392k | — | ~2.4k | Automated safety check: Pass | MIT | |
| Visual Stylecalesthio/OpenMontage | 66k | — | ~1.5k | Automated safety check: Pass | AGPL-3.0 | |
| D3 Visualizationnexu-io/open-design | 100k | — | ~523 | Automated safety check: Pass | Apache-2.0 | |
| Algorithmic Artnexu-io/open-design | 100k | — | ~351 | Automated safety check: Pass | Apache-2.0 | |
| Art BibleDonchitos/Claude-Code-Game-Studios | 26k | — | ~6k | Automated safety check: Pass | MIT |
Similar skills
Visual Style
calesthio/OpenMontage
Create, extract, and apply portable visual design systems via visual-style.md files.
D3 Visualization
nexu-io/open-design
Teaches the agent to produce D3 charts and interactive data visualizations.
Algorithmic Art
nexu-io/open-design
Create generative art using p5.js with seeded randomness so every render is reproducible.
Art Bible
Donchitos/Claude-Code-Game-Studios
Author the Art Bible — visual identity gating asset production.
- Official
Algorithmic Art with p5.js
anthropics/skills
Creates original generative art in two steps: a written algorithmic philosophy, then a p5.js sketch with seeded randomness and an interactive viewer for exploring parameters.
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Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls…
App Control
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Launch, configure, drive, screenshot and measure the running NullPlayer app.
Chromecast Casting
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Google Cast Protocol v2, message framing, debugging, and test scripts.
Emby Integration
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Emby API, authentication flow, rating scale, streaming, scrobbling, and video playback.
Live UI Testing
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Questions about Album Art Visualizer
What does Album Art Visualizer do?
The Art window — the playing track's cover, its star rating, and 30 Core Image GPU effects (VIS) that transform the cover with the audio. Album Art Visualizer is an agent skill from ad-repo/nullplayer. The Art window — the playing track's cover, its star rating, and 30 Core Image GPU effects (VIS) that transform the cover with the audio.
When should I use Album Art Visualizer?
Album Art Visualizer fits situations like: changing the Art window; its place in the window stack and skin families.
How do I install Album Art Visualizer in Claude Code?
Run `npx skills add ad-repo/nullplayer --skill album-art-visualizer -a claude-code`. Or copy the skill folder (skills/album-art-visualizer in ad-repo/nullplayer) into .claude/skills/album-art-visualizer in your project. Claude Code loads it when a task matches its description.
How do I install Album Art Visualizer in Codex?
Run `npx skills add ad-repo/nullplayer --skill album-art-visualizer -a codex`. Or copy the skill folder (skills/album-art-visualizer in ad-repo/nullplayer) into .agents/skills/album-art-visualizer in your project. Codex loads it when a task matches its description.
Can I use Album Art Visualizer in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ad-repo/nullplayer --skill album-art-visualizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/album-art-visualizer, .gemini/skills/album-art-visualizer, .github/skills/album-art-visualizer and .opencode/skills/album-art-visualizer in your project.
What does Album Art Visualizer need to run?
SKILL.md names no scripts, command-line tools or credentials: Album Art Visualizer is instructions for the agent only.
Does Album Art Visualizer access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Album Art Visualizer safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Album Art Visualizer use?
Album Art Visualizer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Album Art Visualizer use?
About 1.6k tokens (SKILL.md is roughly 6.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Album Art Visualizer?
Skills that share tags, products or a category with Album Art Visualizer: Visualize (openclaw/openclaw, 392k stars), Visual Style (calesthio/OpenMontage, 66k stars), D3 Visualization (nexu-io/open-design, 100k stars) and Algorithmic Art (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Album Art Visualizer?
ad-repo (a GitHub user) maintains it in ad-repo/nullplayer, which has 158 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 10, 2026.
Source: ad-repo/nullplayer on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.