voice

name	voice
description	Convert text to speech audio using mb voice CLI. Use when the user asks you to speak, say something aloud, generate audio, or produce a voice recording.

Text-to-Speech (Voice Output)

Generate MP3 audio from text using the mb voice CLI.

Quick Commands

# Generate MP3, prints file path to stdout
mb voice "Hello, this is a test"

# Generate and play immediately
mb voice "Hello" --play

# Save to specific file
mb voice "Hello" -o greeting.mp3

# Override provider and voice
mb voice "Hello" --provider doubao --voice zh_female_wanqudashu_moon_bigtts

# Pipe text (useful for long content)
echo "Long text here" | mb voice
echo "Long text" | mb voice -o output.mp3

When to Use

• User asks you to "say", "speak", "read aloud", or "generate audio/voice"
• User wants a voice recording or audio version of text
• User requests TTS (text-to-speech) output

Available Providers & Voices

Edge TTS (default, free, no key needed):

• zh-CN-XiaoyiNeural (default) — Female Chinese
• zh-CN-YunxiNeural — Male Chinese
• zh-CN-XiaoxiaoNeural — Female Chinese
• en-US-JennyNeural — Female English

Doubao (default when Volcengine keys configured):

• zh_female_wanqudashu_moon_bigtts (default) — Female Chinese
• Other Volcengine voice IDs from the TTS console

OpenAI (when OPENAI_API_KEY set):

• alloy (default), echo, fable, onyx, nova, shimmer

ElevenLabs (when ELEVENLABS_API_KEY set):

• Voice IDs from the ElevenLabs console

Text Limits

• Doubao: ~300 Chinese characters (longer text is auto-truncated)
• OpenAI / ElevenLabs / Edge: ~4000 characters

Guidelines

• For short text (greetings, alerts), use inline: mb voice "text"
• For longer text, pipe through stdin: echo "..." | mb voice
• The output file is MP3 format
• Use --play only when the user explicitly wants to hear the audio (it blocks until playback completes)
• When saving files for the user, use -o with a descriptive filename
• To send the audio to the user in Feishu, copy the file to the outputs directory: cp /tmp/mb-voice-xxx.mp3 /tmp/metabot-outputs/<chatId>/