speech_to_speech_full
Speech To Speech. Spends ElevenLabs credits. Returns audio/mpeg bytes; pass output_path to save them.
This record as markdown: /tools/aiwerk-mcp-server-elevenlabs/speech-to-speech-full.md
What speech_to_speech_full does on Elevenlabs
AI agents use speech_to_speech_full to create or update resources in Elevenlabs, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Elevenlabs environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
seed | number | null | — | If specified, our system will make a best effort to sample deterministically, such that repeated requests with the same seed and parameters should return the sa |
model_id | string | — | Identifier of the model that will be used, you can query them using GET /v1/models. The model needs to have support for speech to speech, you can check this usi |
voice_id | string | Yes | Voice ID to be used, you can use https://api.elevenlabs.io/v1/voices to list all the available voices. |
audio_path | string | — | The audio file which holds the content and emotion that will control the generated speech. Local path. Required for this call. |
file_format | object | — | The format of input audio. Options are 'pcm_s16le_16' or 'other' For `pcm_s16le_16`, the input audio must be 16-bit PCM at a 16kHz sample rate, single channel ( |
output_path | string | — | Where to write the returned bytes. Relative paths resolve against ELEVENLABS_OUTPUT_DIR. Omit it to get the data inline as base64 (small files only). |
audio_base64 | string | — | Base64 contents for "audio". Use this when the server cannot read your local disk. |
output_format | string | — | 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 w |
audio_filename | string | — | Filename to send for "audio". Some endpoints infer the audio format from it. |
enable_logging | boolean | — | When enable_logging is set to false zero retention mode will be used for the request. This will mean history features are unavailable for this request, includin |
voice_settings | string | null | — | Voice settings overriding stored settings for the given voice. They are applied only on the given request. Needs to be send as a JSON encoded string. |
remove_background_noise | boolean | — | If set, will remove the background noise from your audio input using our audio isolation model. Only applies to Voice Changer. |
Parameters from the server's own tool schema.
Why speech_to_speech_full is rated Medium
An AI agent can call speech_to_speech_full faster than any human can review: one bad instruction and it creates or modifies resources in Elevenlabs by the hundred, each call as confident as the last.
Risk signalsHigh parameter count (13 properties)
Attacks that exploit this kind of access
The rule that runs speech_to_speech_full safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Elevenlabs, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For speech_to_speech_full, this is the rule to start with:
speech_to_speech_full stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Elevenlabs, apply this rule, and every speech_to_speech_full call is checked against it from then on.
Questions about speech_to_speech_full
Speech To Speech. Spends ElevenLabs credits. Returns audio/mpeg bytes; pass output_path to save them. It is categorised as a Write tool in the Elevenlabs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
speech_to_speech_full accepts 12 parameters: seed, model_id, voice_id, audio_path, file_format, output_path, audio_base64, output_format, audio_filename, enable_logging, voice_settings, remove_background_noise. Required: voice_id. The full parameter table on this page comes from the server's own tool schema.
Register the Elevenlabs MCP server in PolicyLayer and add a rule for speech_to_speech_full: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Elevenlabs. Nothing to install.
speech_to_speech_full is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the speech_to_speech_full rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for speech_to_speech_full. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
speech_to_speech_full is provided by the Elevenlabs MCP server (@aiwerk/mcp-server-elevenlabs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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