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Blabber-MCP

Blabber-MCP

Public
pinkpixel-dev/blabber-mcp

Convert text into high-quality speech with customizable voices, models, and audio formats using OpenAI's Text-to-Speech API via a Model Context Protocol server that supports file saving and optional playback.

javascript
0 tools
May 30, 2025
Updated Jun 4, 2025

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MCP Server

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📢 Blabber-MCP 🗣️

An MCP server that gives your LLMs a voice using OpenAI's Text-to-Speech API! 🔊


✨ Features

  • Text-to-Speech: Converts input text into high-quality spoken audio.
  • Voice Selection: Choose from various OpenAI voices (alloy, echo, fable, onyx, nova, shimmer).
  • Model Selection: Use standard (tts-1) or high-definition (tts-1-hd) models.
  • Format Options: Get audio output in mp3, opus, aac, or flac.
  • File Saving: Saves the generated audio to a local file.
  • Optional Playback: Automatically play the generated audio using a configurable system command.
  • Configurable Defaults: Set a default voice via configuration.

🔧 Configuration

To use this server, you need to add its configuration to your MCP client's settings file (e.g., mcp_settings.json).

  1. Get OpenAI API Key: You need an API key from OpenAI.
  2. Add to MCP Settings: Add the following block to the mcpServers object in your settings file, replacing "YOUR_OPENAI_API_KEY" with your actual key.
{ "mcpServers": { "blabber-mcp": { "command": "node", "args": ["/full/path/to/blabber-mcp/build/index.js"], (IMPORTANT: Use the full, absolute path to the built index.js file) "env": { "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY", "AUDIO_PLAYER_COMMAND": "xdg-open", (Optional: Command to play audio (e.g., "cvlc", "vlc", "mpv", "ffplay", "afplay", "xdg-open"; defaults to "cvlc") "DEFAULT_TTS_VOICE": "nova" (Optional: Set default voice (alloy, echo, fable, onyx, nova, shimmer); defaults to nova) }, "disabled": false, "alwaysAllow": [] } } }

Important: Make sure the args path points to the correct location of the build/index.js file within your blabber-mcp project directory. Use the full absolute path.


🚀 Usage

Once configured and running, you can use the text_to_speech tool via your MCP client.

Tool: text_to_speech Server: blabber-mcp (or the key you used in the config)

Arguments:

  • input (string, required): The text to synthesize.
  • voice (string, optional): The voice to use (alloy, echo, fable, onyx, nova, shimmer). Defaults to the DEFAULT_TTS_VOICE set in config, or nova.
  • model (string, optional): The model (tts-1, tts-1-hd). Defaults to tts-1.
  • response_format (string, optional): Audio format (mp3, opus, aac, flac). Defaults to mp3.
  • play (boolean, optional): Set to true to automatically play the audio after saving. Defaults to false.

Example Tool Call (with playback):

blabber-mcp text_to_speech { "input": "Hello from Blabber MCP!", "voice": "shimmer", "play": true }

Output:

The tool saves the audio file to the output/ directory within the blabber-mcp project folder and returns a JSON response like this:

{ "message": "Audio saved successfully. Playback initiated using command: cvlc", "filePath": "path/to/speech_1743908694848.mp3", "format": "mp3", "voiceUsed": "shimmer" }

📜 License

This project is licensed under the MIT License - see the LICENSE file for details.


🕒 Changelog

See the CHANGELOG.md file for details on version history.


Made with ❤️ by Pink Pixel

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