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Category: Content & MediaNo API key required

voice-ai-tts

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

personAuthor: jakexiaohubgithub
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Voice.ai Voices

✨ 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 Cloning - Clone voices from audio samples
  • Voice Design - Customize with temperature and top_p parameters
  • OpenClaw Integration - Works with OpenClaw's built-in TTS

⚙️ Configuration

The scripts look for your API key in this order:

  1. VOICE_AI_API_KEY environment variable
  2. OpenClaw config (~/.openclaw/openclaw.json)
  3. Skill-local .env file

Get your API key: Voice.ai Dashboard

Create .env file (Recommended)

echo 'VOICE_AI_API_KEY=your-key-here' > .env

Or export directly

export VOICE_AI_API_KEY="your-api-key"

🤖 OpenClaw Integration

Add this skill to your OpenClaw configuration at ~/.openclaw/openclaw.json:

{
  "skills": {
    "voice-ai-tts": {
      "enabled": true,
      "api_key": "your-voice-ai-api-key",
      "default_voice": "ellie",
      "default_format": "mp3"
    }
  },
  "tts": {
    "skill": "voice-ai-tts",
    "voice_id": "d1bf0f33-8e0e-4fbf-acf8-45c3c6262513",
    "streaming": true
  }
}

YAML config alternative

tts:
  skill: voice-ai-tts
  voice_id: d1bf0f33-8e0e-4fbf-acf8-45c3c6262513
  streaming: true

📝 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 | | /clone <audio_url> | Clone a voice from audio |

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 | | corpse | 72d2a864-b236-402e-a166-a838ccc2c273 | male | distinctive | Gaming, entertainment | | skadi | 559d3b72-3e79-4f11-9b62-9ec702a6c057 | female | anime | Character voices | | zhongli | ed751d4d-e633-4bb0-8f5e-b5c8ddb04402 | male | deep | Gaming, dramatic content | | flora | a931a6af-fb01-42f0-a8c0-bd14bc302bb1 | female | cheerful | Kids content, upbeat | | chief | 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
echo 'VOICE_AI_API_KEY=your-key-here' > .env

# 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

🧬 Voice Cloning

Clone any voice from an audio sample:

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

// Clone from file
const result = await client.cloneVoice({
  file: './my-voice-sample.mp3',
  name: 'My Custom Voice',
  visibility: 'PRIVATE',
  language: 'en'
});

console.log('Voice ID:', result.voice_id);
console.log('Status:', result.status);

// Wait for voice to be ready
const voice = await client.waitForVoice(result.voice_id);
console.log('Voice ready!', voice);

Requirements:

  • Audio sample: 10-30 seconds recommended
  • Clear speech, minimal background noise
  • Supported formats: MP3, WAV, M4A

📁 Files

voice-ai-tts/
├── SKILL.md              # This documentation
├── voice-ai-tts.yaml     # OpenAPI specification
├── voice-ai-tts-sdk.js   # JavaScript/Node.js SDK
├── scripts/
│   └── tts.js            # CLI tool
└── .env                  # API key (create this)

💰 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

📋 Changelog

v1.0.0 (2025-01-31)

  • Initial release
  • 9 curated voice personas
  • 11 language support
  • Streaming mode
  • Voice cloning
  • 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'
});

// Clone voice
const clone = await client.cloneVoice({
  file: './sample.mp3',
  name: 'My Voice'
});

// 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 |

Made with ❤️ by Nick Gill