add-voice-transcription

add-voice-transcription is a skill for Claude Code from sliamh11/Deus. It costs 36 tokens per session (1,006 once invoked), scanned A, a copy of add-voice-transcription, MIT.

A skill that adds automatic voice-note transcription to Deus's WhatsApp channel using OpenAI's Whisper speech-to-text service. Incoming voice messages are downloaded, transcribed, and passed to the agent as text.

In plain words
What is it for?
Use it to read and respond to WhatsApp voice notes as text transcripts.
Why use it?
It lets the agent process voice messages without requiring someone to type them out. It requires WhatsApp to be installed and an OpenAI API key for transcription.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: names the AskUserQuestion tool; positional $N argument.

Good fit Use it to read and respond to WhatsApp voice notes as text transcripts.

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Install with agentmods
npx agentmods add skills/sliamh11/deus/add-voice-transcription
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 sliamh11/Deus --skill add-voice-transcription
Clone the repo
git clone --depth 1 https://github.com/sliamh11/Deus

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,006 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 88% copy Near-identical to another mod 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 $0.00036 $0.01006
Opus 5 $0.00018 $0.00503
Sonnet 5 $0.00007 $0.00201
Haiku 4.5 $0.00004 $0.00101

Measured 12d ago against content hash 7edc90e4d9d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

add-voice-transcription scanned grade A with 1 finding 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 12d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

2. Verify key works: `curl -s https://api.openai.com/v1/models -H "Authorization: Bearer $OPENAI_API_KEY" | head -c 200`
Origin

This is a copy

88% identical to add-voice-transcription — 42 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/add-voice-transcription/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add Voice Transcription

This skill adds automatic voice message transcription to Deus's WhatsApp channel using OpenAI's Whisper API. When a voice note arrives, it is downloaded, transcribed, and delivered to the agent as [Voice: <transcript>].

Phase 1: Pre-flight

Check if already applied

Check if src/transcription.ts exists. If it does, skip to Phase 3 (Configure). The code changes are already in place.

Ask the user

Use AskUserQuestion to collect information:

AskUserQuestion: Do you have an OpenAI API key for Whisper transcription?

If yes, collect it now. If no, direct them to create one at https://platform.openai.com/api-keys.

Phase 2: Apply Code Changes

Prerequisite: WhatsApp must be installed first (via /add-whatsapp). This skill modifies WhatsApp channel files.

Voice transcription is part of the WhatsApp MCP package in packages/. Check if the transcription module already exists:

test -f src/transcription.ts && echo "Already present" || echo "Not present"

If not present, the WhatsApp MCP package should include voice transcription support. Ensure the WhatsApp channel is installed and up to date by running /add-whatsapp.

The following files are involved:

  • src/transcription.ts (voice transcription module using OpenAI Whisper)
  • Voice handling in src/channels/whatsapp.ts (isVoiceMessage check, transcribeAudioMessage call)
  • Transcription tests in src/channels/whatsapp.test.ts
  • openai npm dependency in package.json
  • OPENAI_API_KEY in .env.example

Validate code changes

npm install --legacy-peer-deps
npm run build
npx vitest run src/channels/whatsapp.test.ts

All tests must pass and build must be clean before proceeding.

Phase 3: Configure

Get OpenAI API key (if needed)

If the user doesn't have an API key:

I need you to create an OpenAI API key:

  1. Go to https://platform.openai.com/api-keys
  2. Click "Create new secret key"
  3. Give it a name (e.g., "Deus Transcription")
  4. Copy the key (starts with sk-)

Cost: $0.006 per minute of audio ($0.003 per typical 30-second voice note)

Read the full file on GitHub · 133 lines

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. 12d ago First seen · 133 lines · 36 tokens per session scan A 7edc90e4d9d1

Subscribe to this mod's changes

add-voice-transcription is a skill published in the GitHub repository sliamh11/Deus (51 stars, last pushed yesterday), licensed MIT. It adds 36 tokens to every session and 1,006 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 88% identical to add-voice-transcription, differing in 42 lines, and is treated as a copy.