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.
npx agentmods add skills/coroboros/agent-skills/audio-loopnpx skills add coroboros/agent-skills --skill audio-loopgit clone --depth 1 https://github.com/coroboros/agent-skillsWrote 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.
[](https://agentmods.dev/skills/coroboros/agent-skills/audio-loop)<a href="https://agentmods.dev/skills/coroboros/agent-skills/audio-loop"><img src="https://agentmods.dev/badge/skills/coroboros/agent-skills/audio-loop.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00215 | $0.02803 |
| Opus 5 | $0.00108 | $0.01401 |
| Sonnet 5 | $0.00043 | $0.00561 |
| Haiku 4.5 | $0.00021 | $0.00280 |
Grade B, and why
audio-loop scanned grade B with 2 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 4d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
`command -v ffmpeg ffprobe`. Missing → stop and ask the user to install (macOS: `! brew install ffmpeg`, Debian/Ubuntu: `! sudo apt install ffmpeg`). Never auto-install. Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
bufferPromise = fetch(AUDIO_URL) How it starts
The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Audio Loop
Produce a web-ready seamless audio loop from any source clip: auto-correct stereo balance, normalize loudness, encode lossless FLAC so AudioBufferSourceNode{loop:true} plays it sample-accurate and gapless, emit a drop-in Web Audio snippet that unlocks playback on the first user gesture.
All ffmpeg work happens in scripts/audio-loop.sh — this skill validates the source, orchestrates the pipeline, and turns the script's summary into a report plus a ready-to-paste JS snippet.
Parameters
| Flag | Default | Description |
|---|---|---|
-t <LUFS> |
-28 |
Integrated loudness target (ambient web default) |
-v <0..1> |
0.6 |
Target volume baked into the emitted JS snippet |
-o <dir> |
input dir | Output directory |
-s |
off | Save to ~/.agents/output/{project}/audio-loop/{slug}/ |
-S |
off | Force no-save |
-B |
off | Disable stereo balance auto-correction |
Where each flag is handled. -t, -o, and -B pass through to scripts/audio-loop.sh. -v is skill-only — the agent reads it from $ARGUMENTS and interpolates it into the TARGET constant of the emitted JS snippet; the script never sees it. -s / -S follow the repo save-mode convention — the agent translates -s into an -o <save_path> passed to the script, where <save_path> is ~/.agents/output/{project}/audio-loop/{slug}/ ({project} = kebab-cased basename of the git toplevel, else cwd; create it $HOME-expanded, report the fully-expanded absolute path — no tilde, no magic).
Deliberately no crossfade flag. If the source WAV has a real sample-level discontinuity at the loop boundary, that's source editing — outside this skill's scope. If the user is hearing a bump with FLAC + Web Audio, see Diagnostic by negative result below.
Workflow
1. Validate tools
command -v ffmpeg ffprobe. Missing → stop and ask the user to install (macOS: ! brew install ffmpeg, Debian/Ubuntu: ! sudo apt install ffmpeg). Never auto-install.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 170 lines · 215 tokens per session scan B 27b2316a3267
audio-loop is a skill published in the GitHub repository coroboros/agent-skills (4 stars, last pushed 2d ago), licensed MIT. It adds 215 tokens to every session and 2,803 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
optimize-threejs-games
Profile, diagnose, and improve Three.js or WebGL game performance without regressing gameplay. Use for frame-time drops, CPU/GPU pressure, draw calls, texture and geometry budgets, animation loops, adaptive quality, mobile performance, and browser performance verification.
staggered-word-reveal
Create subtle editorial word-by-word text reveal animations where each word fades and rises into place once it enters the viewport. Use for premium portfolio headlines, hero copy, section intros, and short marketing text that needs a cinematic staggered reveal with IntersectionObserver or in-view detection.
pexo-agent
AI video generation skill with auto model selection across Seedance 2, Kling 3.0, HappyHorse, and 10+ models. Produces finished multi-shot videos (5–120s) from text, images, URLs, scripts, or audio — including AI music, lip sync, and multi-shot sequencing. Calls Pexo's external API, manages project status and billing…
acquiring-skills
Discover and install skills from Hermes, ClawHub, GitHub, and other registries. Load this skill whenever a user asks for a capability you don't already have — image generation, social media, email, calendar, finance, DevOps, search, browser automation, etc.
ai-voice-bots
Builds production voice bots and IVR with Python STT/TTS pipelines. Use when designing telephony, streaming audio, latency budgets, or voice quality monitoring.
performance-budget-lab
Use for website performance planning, Lighthouse/web-vitals checks, bundle/media/font budgets, Core Web Vitals triage, image/video optimization, animation performance, deployment readiness, and premium-site speed audits.