Voice Generator — Text to speech with 1000+ voices

Tools / Voice Generator

Generate Voice

Convert text to natural-sounding spoken audio using AI text-to-speech. Choose from a wide range of voices, adjust speech parameters like stability, speed, and style, and select from multiple output formats.

Returns: Audio file path (auto-uploaded), voice and model IDs, text length, output format, and file size

Parameters

text *stringThe text to convert to speech. Supports up to 5000 characters per request.

voice_idstringVoice ID to use. Defaults to "JBFqnCBsd6RMkjVDRZzb" (George). Use list_voices to see all available voices.

model_idstringModel to use for generation. Defaults to "eleven_multilingual_v2" which supports 29 languages.

stabilitynumberVoice stability (0-1). Lower values produce more expressive and variable speech. Higher values produce more consistent and stable output.

similarity_boostnumberSimilarity boost (0-1). Higher values make the voice more closely match the original voice sample. Lower values allow more creative variation.

stylenumberStyle exaggeration (0-1). Higher values amplify the style of the original speaker. Recommended to keep at 0 for most use cases.

speednumberSpeech speed multiplier (0.25-4.0). 1.0 is normal speed, 0.5 is half speed, 2.0 is double speed.

output_formatstringAudio output format and quality. Defaults to "mp3_44100_128". Higher bitrate = better quality but larger files.

Example

Generate a simple voice clip with default settings

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "voice-generator",
  "skill": "generate_voice",
  "input": {
    "text": "Welcome to ToolRouter, the universal API for AI agent tools."
  }
}' \
  https://api.toolrouter.com/v1/tools/call

List Voices

List all available voices with their IDs, names, categories, labels, descriptions, and audio preview URLs. Use this to discover voice options before generating speech.

Returns: Array of voice objects with voice_id, name, category, labels, description, and preview_url

Example

List all available voices

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "voice-generator",
  "skill": "list_voices",
  "input": {}
}' \
  https://api.toolrouter.com/v1/tools/call

Quick Start

MCP (Claude Code)

claude mcp add --transport stdio \
  --env TOOLROUTER_API_KEY=YOUR_API_KEY \
  toolrouter -- npx -y toolrouter-mcp

REST API

curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{"tool":"voice-generator","skill":"generate_voice","input":{}}' \
  https://api.toolrouter.com/v1/tools/call