audiocpp-diarize

audiocpp-diarize is a skill for Claude Code, Codex from Elumenotion/GuideAnts. It costs 81 tokens per session (884 once invoked), scanned A, original, Apache-2.0.

A tool for speaker diarization, the process of identifying who spoke when in an audio recording, and producing a transcript labeled by speaker.

In plain words
What is it for?
Use it to process meeting or call recordings, label each speaker's turns, and save the resulting transcript locally.
Why use it?
It separates speakers in recordings when an ordinary transcript would mix their words together.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to process meeting or call recordings, label each speaker's turns, and save the resulting transcript locally.

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Install with agentmods
npx agentmods add skills/elumenotion/guideants/audiocpp-diarize
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 Elumenotion/GuideAnts --skill audiocpp-diarize
Clone the repo
git clone --depth 1 https://github.com/Elumenotion/GuideAnts

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 audiocpp-diarize

README.md
[![agentmods](https://agentmods.dev/badge/skills/elumenotion/guideants/audiocpp-diarize/github.svg)](https://agentmods.dev/skills/elumenotion/guideants/audiocpp-diarize)
Your own site
<a href="https://agentmods.dev/skills/elumenotion/guideants/audiocpp-diarize"><img src="https://agentmods.dev/badge/skills/elumenotion/guideants/audiocpp-diarize/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 audiocpp-diarize

Your own site · 80×15
<a href="https://agentmods.dev/skills/elumenotion/guideants/audiocpp-diarize"><img src="https://agentmods.dev/badge/skills/elumenotion/guideants/audiocpp-diarize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 884 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00081 $0.00884
Opus 5 $0.00041 $0.00442
Sonnet 5 $0.00016 $0.00177
Haiku 4.5 $0.00008 $0.00088

Measured 5d ago against content hash a588fb57c6ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

audiocpp-diarize 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 5d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/diarize.py, scripts/fetch_model.py, scripts/preflight.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

samples/guides/Audiocpp/Skills/audiocpp-diarize/SKILL.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

audio.cpp speaker diarization (experimental)

GuideAnts has no local diarization (only its Azure cloud transcription provider does it), but the container's audiocpp_server binary ships the sortformer_diar loader and a generic /v1/tasks/run route. This skill downloads the model once, spawns a private engine, and turns any recording into a speaker-labeled transcript. Deliverables land in Output/; the live voice path is untouched. E2E-verified in this stack (2026-07-15).

Preflight

python3 Skills/audiocpp-diarize/scripts/preflight.py --for diarize

Trust its verdict over this document. It also tells you whether the model is already on disk (skip the download) and whether ASR labeling is available.

The recipe

# 1. Download the model — skip if preflight says modelAlreadyDownloaded
python3 Skills/audiocpp-diarize/scripts/fetch_model.py nvidia/diar_sortformer_4spk-v1 \
  --dest /models-local/asr/diar_sortformer_4spk-v1 --exclude diar_sortformer_4spk-v1.nemo

# 2. Spawn the private engine (loads in seconds; ~494 MB weights, fits next to
#    the wrappers' models without an unload)
python3 Skills/audiocpp-diarize/scripts/spawn_engine.py start \
  --path /models-local/asr/diar_sortformer_4spk-v1 --family sortformer_diar --task diar

# 3. Diarize (any ffmpeg-decodable input)
python3 Skills/audiocpp-diarize/scripts/diarize.py meeting.mp3 -o meeting

# 4. Always stop the engine when done
python3 Skills/audiocpp-diarize/scripts/spawn_engine.py stop

diarize.py converts the input to the 16 kHz mono WAV the engine requires (the raw engine does not resample), fetches speaker turns, merges/filters them, and — when the GuideAnts ASR engine is up — transcribes each turn. Outputs: <base>.transcript.txt (speaker-labeled, timestamped) and <base>.diarization.json (structured turns with confidences).

Options that matter

  • --turns-only — skip ASR labeling (or it degrades to this automatically, with a note, when no ASR model is loaded).
  • --language <hint> — passed to the ASR engine per turn.
  • --merge-gap-seconds / --min-turn-seconds — shape the output without touching the engine.
  • Engine-side tuning needs a re-spawn with e.g. --option speaker_threshold=0.4 (also: speaker_min_frames, speaker_pad_frames, session_len_sec).

Read the full file on GitHub · 78 lines

Files

What ships with it

4 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.

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. 5d ago Changed a588fb57c6ff
  2. 9d ago First seen · 78 lines · 81 tokens per session scan A 861902882154

Subscribe to this mod's changes

audiocpp-diarize is a skill published in the GitHub repository Elumenotion/GuideAnts (57 stars, last pushed today), licensed Apache-2.0. It adds 81 tokens to every session and 884 once invoked, about $0.0004 per session on Opus 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.

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