Claude MLX TTS

Voice-cloned TTS notifications for Claude Code using Chatterbox Turbo on Apple Silicon.

When Claude finishes deep work, hear a brief AI-generated summary spoken aloud—so you know it's ready without watching the screen.

Demo

Click to watch the plugin in action

Features

• Streaming TTS - Audio starts in ~200ms instead of waiting for full generation
• 6 bundled voices - default, alex, jerry, scarlett, snoop, c3po ready to use
• Customization TUI - Full terminal UI for voice, audio, and prompt configuration
• Voice cloning - Create new voices from WAV samples via Clone Lab
• Dynamic compressor - Professional-grade audio processing for consistent, punchy volume
• AI-powered summaries - Condenses Claude's response into a 10-15 word spoken update
• Smart detection - Only triggers on deep work (15+ seconds, 2+ tool calls, or thinking mode)
• Zero config - Works out of the box with bundled voice

Quick Start

Install

First, add this repo as a plugin marketplace:

# From terminal
claude plugin marketplace add aperepel/claude-mlx-tts

# Or from within a Claude Code session
/plugin marketplace add aperepel/claude-mlx-tts

Then install the plugin:

# From terminal
claude plugin install claude-mlx-tts

# Or from within a Claude Code session
/plugin install claude-mlx-tts

Enable Voice Cloning (MLX on Apple Silicon)

After installation, enable MLX voice cloning:

# Install uv (if needed)
brew install uv        # or: curl -LsSf https://astral.sh/uv/install.sh | sh

Then in a Claude Code session:

/tts-init   # Install dependencies and download model (one-time, ~4GB)
/tts-start  # Start the TTS server (recommended)

Why /tts-start? Pre-warms the model in GPU memory for fast responses. Without it, each TTS request cold-loads the model (~10s delay). See ARCHITECTURE.md for the full backend fallback chain.

Note: The default fp16 model is ~4GB and may take a while to download. See Model Options for smaller quantized alternatives.

Full uv installation guide

Marketplace Management

/plugin marketplace list                  # View all marketplaces
/plugin marketplace update claude-mlx-tts # Refresh plugins
/plugin marketplace remove claude-mlx-tts # Remove marketplace

Test It

Verify the install with a smoke test:

/claude-mlx-tts:say Everything checks out and seems to be working. Great job!

Or trigger deep work to hear an automatic summary:

> think about what makes good API design

Custom Voice

Clone your voice in seconds using Clone Lab:

1. Record a WAV sample (see RECORDING.md for tips)
2. Run /tts-status and launch the TUI
3. Open Clone Lab tab → select your WAV → create voice

Commands

Command	Description
/tts-init	Install MLX dependencies and download model (~4GB)
/tts-status	Show config overview, available voices, and server status
/tts-mute [duration]	Mute TTS (30m, until 5pm, or indefinitely)
/say <text>	Speak text directly (smoke test)
/summary-say <text>	Summarize long text and speak it
/tts-start	Start server (pre-warms model for faster responses)
/tts-stop	Stop server (reclaims ~4GB GPU memory)

Configuration

Run /tts-status and launch the TUI to configure:

• Voice Lab — Per-voice audio controls (compressor, limiter, gain)
• Clone Lab — Create voices from WAV samples
• Prompt Lab — Customize voice and message per notification type

Model Options

The default model is chatterbox-turbo-fp16 (~4GB). For smaller memory footprint:

Model	Size	Quality
mlx-community/chatterbox-turbo-fp16	~4GB	Best
mlx-community/chatterbox-turbo-8bit	~2GB	Good
mlx-community/chatterbox-turbo-4bit	~1GB	Acceptable

Troubleshooting

See TROUBLESHOOTING.md for common issues.

Requirements

Basic (macOS say):

• macOS (any Mac)
• Claude Code installed

Voice Cloning (MLX):

• macOS on Apple Silicon (M1/M2/M3/M4)
• Claude Code installed
• ~4GB disk space for the model

License

MIT