ElevenLabs MCP Server

Instructions

Implementation Reference

• elevenlabs_mcp/server.py:431-452 (handler)

  The handler function that executes the text_to_sound_effects tool. Converts a text description to sound effects audio using the ElevenLabs client, handles output formatting, validation of duration, and saves or returns the audio based on output mode.
  def text_to_sound_effects( text: str, duration_seconds: float = 2.0, output_directory: str | None = None, output_format: str = "mp3_44100_128", loop: bool = False, ) -> Union[TextContent, EmbeddedResource]: if duration_seconds < 0.5 or duration_seconds > 5: make_error("Duration must be between 0.5 and 5 seconds") output_path = make_output_path(output_directory, base_path) output_file_name = make_output_file("sfx", text, "mp3") audio_data = client.text_to_sound_effects.convert( text=text, output_format=output_format, duration_seconds=duration_seconds, loop=loop, ) audio_bytes = b"".join(audio_data) # Handle different output modes return handle_output_mode(audio_bytes, output_path, output_file_name, output_mode)
• elevenlabs_mcp/server.py:396-430 (registration)

  Registers the text_to_sound_effects tool with the FastMCP server, providing the detailed description, parameters (schema), and usage instructions.
  @mcp.tool( description=f"""Convert text description of a sound effect to sound effect with a given duration. {get_output_mode_description(output_mode)}. Duration must be between 0.5 and 5 seconds. ⚠️ COST WARNING: This tool makes an API call to ElevenLabs which may incur costs. Only use when explicitly requested by the user. Args: text: Text description of the sound effect duration_seconds: Duration of the sound effect in seconds output_directory: Directory where files should be saved (only used when saving files). Defaults to $HOME/Desktop if not provided. loop: Whether to loop the sound effect. Defaults to False. output_format (str, optional): Output format of the generated audio. Formatted as codec_sample_rate_bitrate. So an mp3 with 22.05kHz sample rate at 32kbs is represented as mp3_22050_32. MP3 with 192kbps bitrate requires you to be subscribed to Creator tier or above. PCM with 44.1kHz sample rate requires you to be subscribed to Pro tier or above. Note that the μ-law format (sometimes written mu-law, often approximated as u-law) is commonly used for Twilio audio inputs. Defaults to "mp3_44100_128". Must be one of: mp3_22050_32 mp3_44100_32 mp3_44100_64 mp3_44100_96 mp3_44100_128 mp3_44100_192 pcm_8000 pcm_16000 pcm_22050 pcm_24000 pcm_44100 ulaw_8000 alaw_8000 opus_48000_32 opus_48000_64 opus_48000_96 opus_48000_128 opus_48000_192 """ )