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cava

cava is a skill for Claude Code, Codex from ad-repo/nullplayer. It costs 43 tokens per session (8,102 once invoked), scanned A, original, no licence file.

A guide to Cava, a spectrum analyzer that turns audio levels into visual frequency bars, either as a separate window or embedded in the app.

In plain words
What is it for?
Use it when changing Cava's DSP or drawing code, spectrum settings, skin-based colors, UI variants, resets, or window lifecycle.
Why use it?
It helps developers maintain the audio analysis, appearance settings, resets, and window behavior in both forms of the analyzer.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 178repo +3 changed 11d ago A scan 43 tokens custom licence

Good fit Use it when changing Cava's DSP or drawing code, spectrum settings, skin-based colors, UI variants, resets, or window lifecycle.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ad-repo/nullplayer/cava
View source ↗ ad-repo/nullplayer nullplayer.fyi
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ad-repo/nullplayer --skill cava
Clone the repo
git clone --depth 1 https://github.com/ad-repo/nullplayer

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cava

README.md
[![agentmods](https://agentmods.dev/badge/skills/ad-repo/nullplayer/cava/github.svg)](https://agentmods.dev/skills/ad-repo/nullplayer/cava)
Your own site
<a href="https://agentmods.dev/skills/ad-repo/nullplayer/cava"><img src="https://agentmods.dev/badge/skills/ad-repo/nullplayer/cava/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cava

Your own site · 80×15
<a href="https://agentmods.dev/skills/ad-repo/nullplayer/cava"><img src="https://agentmods.dev/badge/skills/ad-repo/nullplayer/cava.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,102 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.08102
Opus 5.5 $0.00017 $0.03241
Sonnet 5.5 $0.00009 $0.01620
Haiku 4.5 $0.00004 $0.00810

Measured 11d ago against content hash c788430a7ed7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cava scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cava/SKILL.md · 387 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago Changed · +1 lines c788430a7ed7
  2. 20d ago Changed 76d41e41bcf9
  3. 22d ago Changed 5c0fcb92dc44
  4. 23d ago Changed · +6 lines aa1a1ff850bf
  5. 1mo ago Changed · +19 lines 2b4c752a7a33
  6. 2mo ago First seen · 361 lines · 43 tokens per session scan A f0877c8b713c

Subscribe to this mod's changes

cava is a skill published in the GitHub repository ad-repo/nullplayer (178 stars, last pushed yesterday), with no licence file. It adds 43 tokens to every session and 8,102 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Creative and media
Related

cava compared with skills from other repositories

cava next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
cavaad-repo/nullplayerSkill178yesterdaynoneA43Claude Code, Codex
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code