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Voice Changer Streaming

An MCP tool from the ElevenLabs API server, hosted on mcp.hjlabs.in.

Voice Changer Streaming Stream audio from one voice to another. Maintain full control over emotion, timing and delivery. [POST /v1/voice-changer/{voice_id}/stream]

Name on the gateway: elevenlabs_api__speech_to_speech_stream · may change things.

Parameters

NameTypeDescription
voice_id requiredstringVoice ID to be used, you can use https://api.elevenlabs.io/…
enable_loggingbooleanWhen enable_logging is set to false zero retention mode will be used for the…
optimize_streaming_latencyintegerYou can turn on latency optimizations at some cost of quality. The best…
output_formatstringOutput format of the generated audio. Formatted as codec_sample_rate_bitrate.…
audio requiredstringThe audio file which holds the content and emotion that will control the…
model_idstringIdentifier of the model that will be used, you can query them using GET…
voice_settingsstringVoice settings overriding stored settings for the given voice. They are…
seedintegerIf specified, our system will make a best effort to sample deterministically…
remove_background_noisebooleanIf set, will remove the background noise from your audio input using our audio…
file_formatpcm_s16le_16 | otherThe format of input audio. Options are 'pcm_s16le_16' or 'other' For…

How to call it

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments
{
  "name": "elevenlabs_api__speech_to_speech_stream",
  "arguments": {
    "voice_id": "…",
    "audio": "…"
  }
}

Or connect the ElevenLabs API server directly, which lists 487 tools including this one:

Run in your terminal
claude mcp add --transport http hj-elevenlabs-api https://mcp.hjlabs.in/mcp/elevenlabs-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the voice changer streaming tool with voice_id set to ….

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