Voice.ai Voices

High-quality voice synthesis with 9 personas, 11 languages, and streaming using Voice.ai API.

Security Scan

The skill's code, runtime instructions, and required credential align with a Node.js CLI/SDK for Voice.ai TTS and do not request unrelated credentials or privileged system access.

Purpose & Capability

The skill name/description (Voice.ai TTS) matches the bundled Node.js CLI and SDK and the single required environment variable (VOICE_AI_API_KEY). One minor oddity: the documentation repeatedly refers to https://dev.voice.ai as the "official production API domain" — unusual naming but self-consistent within the package.

Instruction Scope

SKILL.md instructs the agent to set VOICE_AI_API_KEY, run the CLI, reads voices.json, and write output files. The runtime instructions and code only perform those actions and make HTTPS requests to the declared API domain.

Install Mechanism

No install spec is provided (instruction-only install); the package bundles the SDK and CLI JavaScript files. It requires Node.js, which is reasonable for a Node CLI/SDK and does not pull arbitrary external binaries or download code at runtime.

Credentials

Only one credential (VOICE_AI_API_KEY) is required and used as a Bearer token for API calls. There are no other secrets, config paths, or unrelated environment variables requested.

Persistence & Privilege

The skill does not request always:true, does not claim background/persistent execution, and does not modify system or other skill configurations. It writes only the declared audio output file.

Assessment

This skill appears internally consistent: it bundles a Node.js CLI/SDK that uses a single VOICE_AI_API_KEY to call the declared HTTPS API and writes audio output locally. Before installing, verify the vendor/source (check the GitHub repo URL in package.json), confirm that https://dev.voice.ai is the correct production endpoint for your use, and treat your VOICE_AI_API_KEY like any secret (store securely, use least-privilege keys if available, and rotate the key if you suspect leakage). If you want extra assurance, inspect or run the CLI in an isolated environment and monitor outbound network requests to confirm they go only to the expected domain.

✨ Features

• 9 Voice Personas - Carefully curated voices for different use cases
• 11 Languages - Multi-language synthesis with multilingual model
• Streaming Mode - Real-time audio output as it generates
• Voice Design - Customize with temperature and top_p parameters
• OpenClaw Integration - Works with OpenClaw's built-in TTS

---

⚙️ Configuration

Set your API key as an environment variable:

export VOICE_AI_API_KEY="your-api-key"

Get your API key: Voice.ai Dashboard

---

📦 Installation

No install step is required. This skill bundles a Node.js CLI and SDK (no external npm dependencies).

🧩 Key Files

• scripts/tts.js - CLI entrypoint
• voice-ai-tts-sdk.js - Node.js SDK used by the CLI
• voices.json - Voice definitions used by the CLI
• voice-ai-tts.yaml - API specification
• package.json - Skill metadata for tooling

Security Notes

See SECURITY.md for the full security and privacy overview.

This skill:

• Makes outbound HTTPS requests only to https://dev.voice.ai
• Reads local files: voices.json
• Writes audio output to the --output path (default output.mp3)
• Does not execute shell commands and does not modify system configuration files

🌐 API Endpoint

The SDK and spec use https://dev.voice.ai, which is the official Voice.ai production API domain.

---

🤖 OpenClaw Integration

OpenClaw can invoke the CLI script directly if your environment exposes VOICE_AI_API_KEY. Use the /tts commands as configured by your OpenClaw installation.

---

📝 Triggers

These chat commands work with OpenClaw:

Command	Description
/tts <text>	Generate speech with default voice
/tts --voice ellie <text>	Generate speech with specific voice
/tts --stream <text>	Generate with streaming mode
/voices	List available voices

Examples:

/tts Hello, welcome to Voice.ai!
/tts --voice oliver Good morning, everyone.
/tts --voice lilith --stream This is a long story that will stream as it generates...

---

🎙️ Available Voices

Voice	ID	Gender	Persona	Best For
ellie	d1bf0f33-8e0e-4fbf-acf8-45c3c6262513	female	youthful	Vlogs, social content
oliver	f9e6a5eb-a7fd-4525-9e92-75125249c933	male	british	Narration, tutorials
lilith	4388040c-8812-42f4-a264-f457a6b2b5b9	female	soft	ASMR, calm content
smooth	dbb271df-db25-4225-abb0-5200ba1426bc	male	deep	Documentaries, audiobooks
shadow	72d2a864-b236-402e-a166-a838ccc2c273	male	distinctive	Gaming, entertainment
sakura	559d3b72-3e79-4f11-9b62-9ec702a6c057	female	anime	Character voices
zenith	ed751d4d-e633-4bb0-8f5e-b5c8ddb04402	male	deep	Gaming, dramatic content
flora	a931a6af-fb01-42f0-a8c0-bd14bc302bb1	female	cheerful	Kids content, upbeat
commander	bd35e4e6-6283-46b9-86b6-7cfa3dd409b9	male	heroic	Gaming, action content

---

🌍 Supported Languages

Code	Language
en	English
es	Spanish
fr	French
de	German
it	Italian
pt	Portuguese
pl	Polish
ru	Russian
nl	Dutch
sv	Swedish
ca	Catalan

Use the multilingual model for non-English languages:

const audio = await client.generateSpeech({
  text: 'Bonjour le monde!',
  voice_id: 'ellie-voice-id',
  model: 'voiceai-tts-multilingual-v1-latest',
  language: 'fr'
});

---

🎨 Voice Design

Customize voice output with these parameters:

Parameter	Range	Default	Description
temperature	0-2	1.0	Higher = more expressive, lower = more consistent
top_p	0-1	0.8	Controls randomness in speech generation

Example:

const audio = await client.generateSpeech({
  text: 'This will sound very expressive!',
  voice_id: 'ellie-voice-id',
  temperature: 1.8,
  top_p: 0.9
});

---

📡 Streaming Mode

Generate audio with real-time streaming (recommended for long texts):

# Stream audio as it generates
node scripts/tts.js --text "This is a long story..." --voice ellie --stream

# Streaming with custom output
node scripts/tts.js --text "Chapter one..." --voice oliver --stream --output chapter1.mp3

SDK streaming:

const stream = await client.streamSpeech({
  text: 'Long text here...',
  voice_id: 'ellie-voice-id'
});

// Pipe to file
stream.pipe(fs.createWriteStream('output.mp3'));

// Or handle chunks
stream.on('data', chunk => {
  // Process audio chunk
});

---

🔊 Audio Formats

Format	Description	Use Case
mp3	Standard MP3 (32kHz)	General use
wav	Uncompressed WAV	High quality
pcm	Raw PCM audio	Processing
opus_48000_128	Opus 128kbps	Streaming
mp3_44100_192	High-quality MP3	Professional

See voice-ai-tts-sdk.js for all format options.

---

💻 CLI Usage

# Set API key
export VOICE_AI_API_KEY="your-key-here"

# Generate speech
node scripts/tts.js --text "Hello world!" --voice ellie

# Choose different voice
node scripts/tts.js --text "Good morning!" --voice oliver --output morning.mp3

# Use streaming for long texts
node scripts/tts.js --text "Once upon a time..." --voice lilith --stream

# Show help
node scripts/tts.js --help

---

📁 Files

voice-ai-tts/
├── SKILL.md              # This documentation
├── README.md             # Quick start
├── CHANGELOG.md          # Version history
├── LICENSE.md            # MIT license
├── SECURITY.md           # Security & privacy notes
├── voices.json           # Voice definitions
├── voice-ai-tts.yaml     # OpenAPI specification
├── voice-ai-tts-sdk.js   # JavaScript/Node.js SDK
├── package.json          # OpenClaw metadata
├── scripts/
│   └── tts.js            # CLI tool

---

💰 Cost & Usage

Voice.ai uses a credit-based system. Check your usage:

// The SDK tracks usage via API responses
const voices = await client.listVoices();
// Check response headers for rate limit info

Tips to reduce costs:

• Use streaming for long texts (more efficient)
• Cache generated audio when possible
• Use appropriate audio quality for your use case

---

🔗 Links

• Get API Key - Sign up and get your key
• API Documentation - Full API reference
• Voice Library - Browse all voices
• API Reference - Endpoint details
• Pricing - Plans and credits

---

📋 Changelog

v1.1.5 (2026-02-16)

• Declare runtime requirements via metadata.clawdbot so ClawHub shows required env vars

v1.1.4 (2026-02-16)

• Declare VOICE_AI_API_KEY as primary env var in metadata

v1.1.3 (2026-02-16)

• Remove voice-sample upload features from the published bundle to reduce privacy risk
• Require VOICE_AI_API_KEY via environment variable only

v1.1.2 (2026-02-16)

• Added SECURITY.md and LICENSE.md for provenance and transparency
• Restricted SDK transport to HTTPS only

v1.1.1 (2026-02-16)

• Packaging metadata improvements for ClawHub import (bin/files metadata)

v1.1.0 (2026-02-16)

• Declared required credentials in metadata
• Documented the production API endpoint domain
• Renamed voice personas for IP-safe labeling
• Added voices.json for voice data

v1.0.0 (2025-01-31)

• Initial release
• 9 curated voice personas
• 11 language support
• Streaming mode
• Voice design parameters
• Full SDK with error handling
• CLI tool

---

🛠️ SDK Quick Reference

const VoiceAI = require('./voice-ai-tts-sdk');
const client = new VoiceAI(process.env.VOICE_AI_API_KEY);

// List voices
const voices = await client.listVoices({ limit: 10 });

// Get voice details
const voice = await client.getVoice('voice-id');

// Generate speech
const audio = await client.generateSpeech({
  text: 'Hello, world!',
  voice_id: 'voice-id',
  audio_format: 'mp3'
});

// Generate to file
await client.generateSpeechToFile(
  { text: 'Hello!', voice_id: 'voice-id' },
  'output.mp3'
);

// Stream speech
const stream = await client.streamSpeech({
  text: 'Long text...',
  voice_id: 'voice-id'
});

// Delete voice
await client.deleteVoice('voice-id');

---

❓ Troubleshooting

Error	Cause	Solution
AuthenticationError	Invalid API key	Check your VOICE_AI_API_KEY
PaymentRequiredError	Out of credits	Add credits at voice.ai/dashboard
RateLimitError	Too many requests	Wait and retry, or upgrade plan
ValidationError	Invalid parameters	Check text length and voice_id

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Made with ❤️ by Nick Gill