Trellis Session Insight
mindfold-ai/Trellis
Reach into past AI conversation history through the trellis mem CLI.
Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls…
Install Vis Classic Guide
$ npx skills add ad-repo/nullplayer --skill vis-classic-guide -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ad-repo/nullplayer vis-classic-guide --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/vis-classic-guide .claude/skills/vis-classic-guide && 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 "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .claude/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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/vis-classic-guideType 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 vis-classic-guide -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ad-repo/nullplayer vis-classic-guide --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/vis-classic-guide .agents/skills/vis-classic-guide && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .agents/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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 vis-classic-guide -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ad-repo/nullplayer vis-classic-guide --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/vis-classic-guide .cursor/skills/vis-classic-guide && 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 "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .cursor/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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/vis-classic-guide--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 vis-classic-guide -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ad-repo/nullplayer vis-classic-guide --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/vis-classic-guide .gemini/skills/vis-classic-guide && 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 "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .gemini/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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 vis-classic-guideInstalls 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 vis-classic-guide -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/vis-classic-guide .github/skills/vis-classic-guide && 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 "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .github/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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 vis-classic-guide -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 vis-classic-guide --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/vis-classic-guide .opencode/skills/vis-classic-guide && 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 "vis-classic-guide" agent skill from https://github.com/ad-repo/nullplayer/tree/main/skills/vis-classic-guide into .opencode/skills/vis-classic-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vis-classic-guide", 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
vis-classic-guide- GitHub stars
- 158
- Token cost
- ~739 tokens
- SKILL.md length
- 257 words
- Files
- 5 (incl. scripts, references)
- Skills in repo
- 40
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls…
- Works in 4 steps: Read references/implementation.md before… → Read references/profile-catalog.md when… → If profiles change, regenerate the catalog → …
- Modifying visclassic rendering behavior
- SKILL.md covers Overview, Workflow, Skin Assignment Guidance and Debugging a live defect, plus 2 more sections
- Runs Python scripts from its folder; calls python3
What it does
Vis Classic Guide is an agent skill from ad-repo/nullplayer. Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls, transparent-background behavior, persistence keys, and bundled INI profiles). Use when modifying visclassic rendering behavior, profile import/export, assigning profiles to skins, or debugging profile-specific response differences.
Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts and reference files (for example `agents/openai.yaml`, `references/implementation.md` and `references/profile-catalog.md`).
It sits in Development, covering Debugging. The repository describes itself as: nullPlayer is a free open source macOS media player with some unique features.
When your agent uses it
- Modifying visclassic rendering behavior
- Profile import/export
- Assigning profiles to skins
- Debugging profile-specific response differences
Example prompts
- “/vis-classic-guide”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Read references/implementation.md before changing vis_classic behavior.
- Read references/profile-catalog.md when selecting, comparing, or assigning profiles.
- If profiles change, regenerate the catalog
- Validate skill metadata after edits
What it can do on your machine
Read from SKILL.md and the folder at commit bd7ddac. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Vis Classic Guide loads about 739 tokens when it runs, and up to ~21k if it reads all its reference files. Until then it costs about 107 tokens; SKILL.md has 257 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); the scripts in this folder 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 257 words (~739 tokens).
“Use this skill when working on vis_classic in NullPlayer.”
- name
- vis-classic-guide
Files
SKILL.md and 4 other files (scripts, references) in skills/vis-classic-guide of ad-repo/nullplayer.
- SKILL.md
- agents/openai.yaml
- references/implementation.md
- references/profile-catalog.md
- scripts/generate_profile_catalog.py
Open the folder on GitHubat commit bd7ddac
Compare with similar skills
Vis Classic Guide 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 |
|---|---|---|---|---|---|---|
| Vis Classic Guide this skillad-repo/nullplayer | 158 | — | ~739 | Automated safety check: Pass | Custom licence | |
| Trellis Session Insightmindfold-ai/Trellis | 15k | 4 repos | ~1.7k | Automated safety check: Pass | AGPL-3.0 | |
| Native Data FetchingCherryHQ/cherry-studio-app | 4k | 6 repos | ~2.9k | Automated safety check: Notes | MIT | |
| Debugging Executionsn8n-io/n8n | 207k | — | ~2.6k | Automated safety check: Pass | Custom licence | |
| Aoti Debugpytorch/pytorch | 104k | 1 repos | ~1.7k | Automated safety check: Pass | Custom licence | |
| Herdr Throwaway Reproductionherdrdev/herdr | 43k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Vis Classic Guide
What does Vis Classic Guide do?
Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls…. Vis Classic Guide is an agent skill from ad-repo/nullplayer. Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls, transparent-background behavior, persistence keys, and bundled INI profiles).
When should I use Vis Classic Guide?
Vis Classic Guide fits situations like: modifying visclassic rendering behavior; profile import/export; assigning profiles to skins; debugging profile-specific response differences.
How do I install Vis Classic Guide in Claude Code?
Run `npx skills add ad-repo/nullplayer --skill vis-classic-guide -a claude-code`. Or copy the skill folder (skills/vis-classic-guide in ad-repo/nullplayer) into .claude/skills/vis-classic-guide in your project. Claude Code loads it when a task matches its description.
How do I install Vis Classic Guide in Codex?
Run `npx skills add ad-repo/nullplayer --skill vis-classic-guide -a codex`. Or copy the skill folder (skills/vis-classic-guide in ad-repo/nullplayer) into .agents/skills/vis-classic-guide in your project. Codex loads it when a task matches its description.
Can I use Vis Classic Guide 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 vis-classic-guide -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/vis-classic-guide, .gemini/skills/vis-classic-guide, .github/skills/vis-classic-guide and .opencode/skills/vis-classic-guide in your project.
What does Vis Classic Guide need to run?
Going by SKILL.md and its folder, Vis Classic Guide needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Vis Classic Guide 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 Vis Classic Guide 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Vis Classic Guide use?
Vis Classic Guide 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 Vis Classic Guide use?
About 739 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 20k tokens, read only when the agent opens those files.
What are the alternatives to Vis Classic Guide?
Skills that share tags, products or a category with Vis Classic Guide: Trellis Session Insight (mindfold-ai/Trellis, 15k stars), Native Data Fetching (CherryHQ/cherry-studio-app, 4k stars), Debugging Executions (n8n-io/n8n, 207k stars) and Aoti Debug (pytorch/pytorch, 104k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Vis Classic Guide?
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 11, 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.