ghostclaw: Skill for Claude Code

.claude/skills/add-voice-transcription/SKILL.md

add-voice-transcription is a skill for Claude Code from b1rdmania/ghostclaw. It costs 36 tokens per session (987 once invoked), scanned A, original, MIT.

A voice-note transcription feature for GhostClaw using the ElevenLabs Scribe service. It turns an incoming voice message into text that the agent can read and answer.

In plain words
What is it for?
Downloading voice messages, transcribing them, and delivering the transcript to the agent as text.
Why use it?
It removes the need to listen to voice notes before the agent can process them. The transcription requires an ElevenLabs API key.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths; names the AskUserQuestion tool.

This is b1rdmania/ghostclaw's own configuration. It tells Claude Code how to work on ghostclaw itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ghostclaw configures →

Reuse

Borrowing it

Nothing to install: this file belongs to b1rdmania/ghostclaw. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/b1rdmania/ghostclaw/main/.claude/skills/add-voice-transcription/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/b1rdmania/ghostclaw

Made for: Claude Code.

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 add-voice-transcription

README.md
[![agentmods](https://agentmods.dev/badge/skills/b1rdmania/ghostclaw/add-voice-transcription/github.svg)](https://agentmods.dev/skills/b1rdmania/ghostclaw/add-voice-transcription)
Your own site
<a href="https://agentmods.dev/skills/b1rdmania/ghostclaw/add-voice-transcription"><img src="https://agentmods.dev/badge/skills/b1rdmania/ghostclaw/add-voice-transcription/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 add-voice-transcription

Your own site · 80×15
<a href="https://agentmods.dev/skills/b1rdmania/ghostclaw/add-voice-transcription"><img src="https://agentmods.dev/badge/skills/b1rdmania/ghostclaw/add-voice-transcription.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 987 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 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 $0.00036 $0.00987
Opus 5 $0.00018 $0.00494
Sonnet 5 $0.00007 $0.00197
Haiku 4.5 $0.00004 $0.00099

Measured 12d ago against content hash 456bfc567890, 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.

The scan reads SKILL.md. This mod also ships 4 executable files (add/src/transcription.ts, modify/src/channels/whatsapp.test.ts, modify/src/channels/whatsapp.ts, …), 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.

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.elevenlabs.io/v1/user -H "xi-api-key: $ELEVENLABS_API_KEY" | head -c 200`
.claude/skills/add-voice-transcription/SKILL.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 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 using ElevenLabs Scribe 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

Read .ghostclaw/state.yaml. If voice-transcription is in applied_skills, 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 ElevenLabs API key?

If yes, collect it now. If no, direct them to create one at https://elevenlabs.io — sign up and get an API key from Settings > API Keys.

Phase 2: Apply Code Changes

Run the skills engine to apply this skill's code package.

Initialize skills system (if needed)

If .ghostclaw/ directory doesn't exist yet:

npx tsx scripts/apply-skill.ts --init

Apply the skill

npx tsx scripts/apply-skill.ts .claude/skills/add-voice-transcription

This deterministically:

  • Adds src/transcription.ts (voice transcription module using ElevenLabs Scribe)
  • Three-way merges voice handling into src/channels/whatsapp.ts (isVoiceMessage check, transcribeAudioMessage call)
  • Three-way merges transcription tests into src/channels/whatsapp.test.ts (mock + 3 test cases)
  • Updates .env.example with ELEVENLABS_API_KEY
  • Records the application in .ghostclaw/state.yaml

If the apply reports merge conflicts, read the intent files:

  • modify/src/channels/whatsapp.ts.intent.md — what changed and invariants for whatsapp.ts
  • modify/src/channels/whatsapp.test.ts.intent.md — what changed for whatsapp.test.ts

Validate code changes

npm test
npm run build

All tests must pass (including the 3 new voice transcription tests) and build must be clean before proceeding.

Phase 3: Configure

Get ElevenLabs API key (if needed)

If the user doesn't have an API key:

I need you to create an ElevenLabs API key:

  1. Go to https://elevenlabs.io and sign up (free tier available)
  2. Go to Settings > API Keys
  3. Click "Create API Key"
  4. Copy the key

The Scribe transcription API is included in all ElevenLabs plans.

Read the full file on GitHub · 132 lines

Files

What ships with it

7 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. 12d ago First seen · 132 lines · 36 tokens per session scan A 456bfc567890

Subscribe to this mod's changes

add-voice-transcription is a skill published in the GitHub repository b1rdmania/ghostclaw (92 stars, last pushed 4mo ago), licensed MIT. It adds 36 tokens to every session and 987 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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