get_similar_library_voices
Get Similar Library Voices. Spends ElevenLabs credits.
This record as markdown: /tools/aiwerk-mcp-server-elevenlabs/get-similar-library-voices.md
What get_similar_library_voices does on Elevenlabs
AI agents call get_similar_library_voices to retrieve information from Elevenlabs without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
top_k | number | null | — | Number of most similar voices to return. If similarity_threshold is provided, less than this number of voices may be returned. Values range from 1 to 100. |
audio_file_path | string | — | File for "audio_file". Local path. |
audio_file_base64 | string | — | Base64 contents for "audio_file". Use this when the server cannot read your local disk. |
audio_file_filename | string | — | Filename to send for "audio_file". Some endpoints infer the audio format from it. |
similarity_threshold | number | null | — | Threshold for voice similarity between provided sample and library voices. Values range from 0 to 2. The smaller the value the more similar voices will be retur |
Parameters from the server's own tool schema.
Why get_similar_library_voices is rated Low
Even though get_similar_library_voices only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs get_similar_library_voices 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 get_similar_library_voices, this is the rule to start with:
get_similar_library_voices is read-only, so it stays allowed. 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 get_similar_library_voices call is checked against it from then on.
Questions about get_similar_library_voices
Get Similar Library Voices. Spends ElevenLabs credits. It is categorised as a Read tool in the Elevenlabs MCP Server, which means it retrieves data without modifying state.
get_similar_library_voices accepts 5 parameters: top_k, audio_file_path, audio_file_base64, audio_file_filename, similarity_threshold. 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 get_similar_library_voices: 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.
get_similar_library_voices is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_similar_library_voices 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 get_similar_library_voices. 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.
get_similar_library_voices 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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