The dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its…
$ npx skills add ad-repo/nullplayer --skill spectrum-analyzer-window -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ad-repo/nullplayer spectrum-analyzer-window --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/spectrum-analyzer-window .claude/skills/spectrum-analyzer-window && 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 "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .claude/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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/spectrum-analyzer-windowType 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 spectrum-analyzer-window -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ad-repo/nullplayer spectrum-analyzer-window --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/spectrum-analyzer-window .agents/skills/spectrum-analyzer-window && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .agents/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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 spectrum-analyzer-window -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ad-repo/nullplayer spectrum-analyzer-window --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/spectrum-analyzer-window .cursor/skills/spectrum-analyzer-window && 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 "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .cursor/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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/spectrum-analyzer-window--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 spectrum-analyzer-window -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ad-repo/nullplayer spectrum-analyzer-window --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/spectrum-analyzer-window .gemini/skills/spectrum-analyzer-window && 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 "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .gemini/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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 spectrum-analyzer-windowInstalls 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 spectrum-analyzer-window -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/spectrum-analyzer-window .github/skills/spectrum-analyzer-window && 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 "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .github/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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 spectrum-analyzer-window -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 spectrum-analyzer-window --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/spectrum-analyzer-window .opencode/skills/spectrum-analyzer-window && 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 "spectrum-analyzer-window" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/spectrum-analyzer-window into .opencode/skills/spectrum-analyzer-window/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spectrum-analyzer-window", 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.
spectrum-analyzer-windowThe dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its…
Spectrum Analyzer Window is an agent skill from ad-repo/nullplayer. The dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its waveform demand. Use when modifying the spectrum window chrome, mode list, controls, or analyzer curve.
Its SKILL.md is about 1.5k 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.
Read from SKILL.md and the folder at commit 3d87ce1. It shows what the files ask for, not the result of running them.
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.
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.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Spectrum Analyzer Window loads about 1.5k tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 684 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.
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.
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 684 words (~1,548 tokens).
“Dedicated Metal-based spectrum analyzer providing larger, more detailed view than the main window's 19-bar analyzer. Two implementations (classic/modern UI modes) both embed SpectrumAnalyzerView. For per-mode shader internals see gpu-vis-modes.”
Just SKILL.md in skills/spectrum-analyzer-window of ad-repo/nullplayer.
Open the folder on GitHubat commit 3d87ce1
Spectrum Analyzer Window 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 |
|---|---|---|---|---|---|---|
| Spectrum Analyzer Window this skillad-repo/nullplayer | 158 | — | ~1.5k | Automated safety check: Pass | Custom licence | |
| Analyzing Windows Registry For Artifactsmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | |
| Analyzing Windows Event Logs In Splunkmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Analyzing Windows Prefetch With Pythonmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Analyzing Windows Amcache Artifactsmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Analyzing Windows Lnk Files For Artifactsmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3.2k | Automated safety check: Pass | Apache-2.0 |
mukul975/Anthropic-Cybersecurity-Skills
Extract and analyze Windows Registry hives with tools like RegRipper and Registry Explorer to uncover user activity, installed software, autostart/persistence entries, and evidence of system…
mukul975/Anthropic-Cybersecurity-Skills
Analyzes Windows Security, System, and Sysmon event logs in Splunk to detect authentication attacks, privilege escalation, persistence mechanisms, and lateral movement using SPL queries mapped to…
mukul975/Anthropic-Cybersecurity-Skills
Parse Windows Prefetch (.pf) files with the windowsprefetch Python library to reconstruct application execution history, run counts, and accessed file/volume lists.
mukul975/Anthropic-Cybersecurity-Skills
Parses the Windows Amcache.hve registry hive with Eric Zimmerman's AmcacheParser and Timeline Explorer to extract evidence of program execution, application installation, and driver loading…
mukul975/Anthropic-Cybersecurity-Skills
Parse Windows LNK shortcut files to extract target paths, MAC timestamps, volume serial numbers, and machine identifiers for forensic timeline reconstruction.
mukul975/Anthropic-Cybersecurity-Skills
Reconstructs folder browsing history from Windows Shellbag registry data using SBECmd and Shellbags Explorer, even for folders that were later deleted.
ad-repo/nullplayer
Capture one centred main-window screenshot per skin across every skin system (Classic, Original, Original-Metal, Modern/.wal, Media Player/.wmz, Audion Faces) and assemble them into a fixed-duration…
ad-repo/nullplayer
Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls…
ad-repo/nullplayer
Launch, configure, drive, screenshot and measure the running NullPlayer app.
ad-repo/nullplayer
Google Cast Protocol v2, message framing, debugging, and test scripts.
ad-repo/nullplayer
Emby API, authentication flow, rating scale, streaming, scrobbling, and video playback.
ad-repo/nullplayer
How to debug a defect that only exists on screen — instrument first, drive the app yourself, and measure what is actually drawn.
The dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its…. Spectrum Analyzer Window is an agent skill from ad-repo/nullplayer. The dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its waveform demand.
Spectrum Analyzer Window fits situations like: modifying the spectrum window chrome.
Run `npx skills add ad-repo/nullplayer --skill spectrum-analyzer-window -a claude-code`. Or copy the skill folder (skills/spectrum-analyzer-window in ad-repo/nullplayer) into .claude/skills/spectrum-analyzer-window in your project. Claude Code loads it when a task matches its description.
Run `npx skills add ad-repo/nullplayer --skill spectrum-analyzer-window -a codex`. Or copy the skill folder (skills/spectrum-analyzer-window in ad-repo/nullplayer) into .agents/skills/spectrum-analyzer-window in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ad-repo/nullplayer --skill spectrum-analyzer-window -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spectrum-analyzer-window, .gemini/skills/spectrum-analyzer-window, .github/skills/spectrum-analyzer-window and .opencode/skills/spectrum-analyzer-window in your project.
SKILL.md names no scripts, command-line tools or credentials: Spectrum Analyzer Window is instructions for the agent only.
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.
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.
Spectrum Analyzer Window has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
About 1.5k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Spectrum Analyzer Window: Analyzing Windows Registry For Artifacts (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Analyzing Windows Event Logs In Splunk (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Analyzing Windows Prefetch With Python (mukul975/Anthropic-Cybersecurity-Skills, 34k stars) and Analyzing Windows Amcache Artifacts (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
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.
