Windows Desktop E2E
affaan-m/ECC
E2E testing for Windows native desktop apps (WPF, WinForms, Win32/MFC, Qt) using pywinauto and Windows UI Automation.
The PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI.
$ npx skills add ad-repo/nullplayer --skill peppymeter -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ad-repo/nullplayer peppymeter --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/peppymeter .claude/skills/peppymeter && 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 "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .claude/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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/peppymeterType 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 peppymeter -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ad-repo/nullplayer peppymeter --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/peppymeter .agents/skills/peppymeter && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .agents/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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 peppymeter -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ad-repo/nullplayer peppymeter --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/peppymeter .cursor/skills/peppymeter && 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 "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .cursor/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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/peppymeter--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 peppymeter -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ad-repo/nullplayer peppymeter --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/peppymeter .gemini/skills/peppymeter && 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 "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .gemini/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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 peppymeterInstalls 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 peppymeter -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/peppymeter .github/skills/peppymeter && 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 "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .github/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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 peppymeter -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 peppymeter --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/peppymeter .opencode/skills/peppymeter && 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 "peppymeter" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/peppymeter into .opencode/skills/peppymeter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "peppymeter", 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.
peppymeterThe PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI.
Peppymeter is an agent skill from ad-repo/nullplayer. The PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI. Covers the meters.txt geometry, the CoreGraphics compositor (needle rotation + linear masks), the stereo-tap level model, meter selection/random, bundled GPL assets, and WindowManager integration. Use when modifying the PeppyMeter window, its renderer, meter templates, or level plumbing.
Its SKILL.md is about 2.9k 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.
Links to these hosts (documentation or services it may open):
github.comFrom 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.
Peppymeter loads about 2.9k tokens when it runs. Until then it costs about 107 tokens; SKILL.md has 1,210 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 1,210 words (~2,852 tokens).
“A skinnable analog VU meter window — a native Swift port of project-owner/PeppyMeter. It renders left/right audio levels on classic analog needle (circular) and bar (linear) meters composited from bundled image templates. Two implementations (classic/modern UI) share one mode-neutral engine…”
Just SKILL.md in skills/peppymeter of ad-repo/nullplayer.
Open the folder on GitHubat commit 3d87ce1
Peppymeter 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 |
|---|---|---|---|---|---|---|
| Peppymeter this skillad-repo/nullplayer | 158 | — | ~2.9k | Automated safety check: Pass | Custom licence | |
| Windows Desktop E2Eaffaan-m/ECC | 276k | 1 repos | ~7.6k | Automated safety check: Pass | MIT | |
| Windows Desktop E2Eaffaan-m/ECC | 276k | — | ~5.5k | Automated safety check: Pass | MIT | |
| Needle AutomationComposioHQ/awesome-claude-skills | 77k | 3 repos | ~727 | Automated safety check: Pass | None | |
| Windows Hardeningsickn33/agentic-awesome-skills | 47k | 2 repos | ~4.4k | Automated safety check: Pass | MIT | |
| Windows Serversickn33/agentic-awesome-skills | 47k | 2 repos | ~2.9k | Automated safety check: Pass | MIT |
affaan-m/ECC
E2E testing for Windows native desktop apps (WPF, WinForms, Win32/MFC, Qt) using pywinauto and Windows UI Automation.
affaan-m/ECC
E2E testing for Windows native desktop apps (WPF, WinForms, Win32/MFC, Qt) using pywinauto and Windows UI Automation.
ComposioHQ/awesome-claude-skills
Automate Needle tasks via Rube MCP (Composio). An agent skill from ComposioHQ/awesome-claude-skills.
sickn33/agentic-awesome-skills
Harden Windows servers per security baselines and CIS benchmarks.
sickn33/agentic-awesome-skills
Administer Windows Server systems. An agent skill from sickn33/agentic-awesome-skills.
davila7/claude-code-templates
How to use a Win32 build of BusyBox to run many of the standard UNIX command line tools on Windows.
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 PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI. Peppymeter is an agent skill from ad-repo/nullplayer. The PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI.
Peppymeter fits situations like: modifying the PeppyMeter window; meter templates.
Run `npx skills add ad-repo/nullplayer --skill peppymeter -a claude-code`. Or copy the skill folder (skills/peppymeter in ad-repo/nullplayer) into .claude/skills/peppymeter in your project. Claude Code loads it when a task matches its description.
Run `npx skills add ad-repo/nullplayer --skill peppymeter -a codex`. Or copy the skill folder (skills/peppymeter in ad-repo/nullplayer) into .agents/skills/peppymeter 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 peppymeter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/peppymeter, .gemini/skills/peppymeter, .github/skills/peppymeter and .opencode/skills/peppymeter in your project.
SKILL.md names no scripts, command-line tools or credentials: Peppymeter is instructions for the agent only.
SKILL.md names 1 domain. As links in the text: github.com. 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.
Peppymeter has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
About 2.9k tokens (SKILL.md is roughly 11k 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 Peppymeter: Windows Desktop E2E (affaan-m/ECC, 276k stars), Windows Desktop E2E (affaan-m/ECC, 276k stars), Needle Automation (ComposioHQ/awesome-claude-skills, 77k stars) and Windows Hardening (sickn33/agentic-awesome-skills, 47k 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.