add_voice

A write tool on the Elevenlabs MCP server.

SERVERElevenlabs SOURCE@aiwerk/mcp-server-elevenlabs

Medium RISK CLASS

Category Write

Parameters 71 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aiwerk-mcp-server-elevenlabs/add-voice.md

WHAT IT DOES

What add_voice does on Elevenlabs

AI agents use add_voice 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
`name`	string	Yes	The name that identifies this voice. This will be displayed in the dropdown of the website.
`labels`	object	—	Labels for the voice. Keys can be language, accent, gender, or age.
`description`	string \| null	—	A description of the voice.
`files_paths`	array	—	A list of file paths to audio recordings intended for voice cloning. Local paths. Required for this call.
`files_filenames`	array	—	Filenames to send for "files". Some endpoints infer the audio format from them.
`files_base64_list`	array	—	Base64 contents for "files", one entry per file. Use this when the server cannot read your local disk.
`remove_background_noise`	boolean	—	If set will remove background noise for voice samples using our audio isolation model. If the samples do not include background noise, it can make the quality w

Parameters from the server's own tool schema.

RISK

Why add_voice is rated Medium

An AI agent can call add_voice 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.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_voice 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 add_voice, this is the rule to start with:

add_voice Rate-limited

add_voice 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_voice": {
      "limits": [
        {
          "counter": "add_voice_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Elevenlabs, apply this rule, and every add_voice call is checked against it from then on.

FAQ

Questions about add_voice

What does the add_voice tool do? +

add_voice is a write tool on the Elevenlabs MCP server. 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.

What parameters does add_voice accept? +

add_voice accepts 7 parameters: name, labels, description, files_paths, files_filenames, files_base64_list, remove_background_noise. Required: name. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on add_voice? +

Register the Elevenlabs MCP server in PolicyLayer and add a rule for add_voice: 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.

What risk level is add_voice? +

add_voice is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_voice? +

Yes. Add a rate_limit block to the add_voice 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.

How do I block add_voice completely? +

Set action: deny in the PolicyLayer policy for add_voice. 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.

What MCP server provides add_voice? +

add_voice 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.

KEEP EXPLORING

More on Elevenlabs, and thousands of servers like it.

This server

All 390 Elevenlabs tools →

Across the catalogue

add-tag on Kanban MCP Server →kb_add on Persistent Kb → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →