AI agents invoke elevenlabs_text_to_speech to trigger actions in UnClick. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
text | string | Yes | Text to synthesize (max 5000 characters) |
style | number | — | 0.0-1.0 style exaggeration |
api_key | string | Yes | |
model_id | string | — | ElevenLabs model ID (default: eleven_monolingual_v1) |
voice_id | string | Yes | |
stability | number | — | 0.0-1.0 (default: 0.5) |
output_format | string | — | mp3_44100_128, pcm_16000, etc. (default: mp3_44100_128) |
similarity_boost | number | — | 0.0-1.0 (default: 0.75) |
use_speaker_boost | boolean | — |
Parameters from the server's own tool schema.
This tool triggers an external API call to ElevenLabs to generate audio from text, which is an external operation with side effects (API usage, potential costs). It doesn't merely read data, but actively invokes a third-party service to produce and return synthesized audio content. Misuse could lead to unexpected API consumption or generation of inappropriate audio content.
From the tool's definition Convert text to speech with a selected ElevenLabs voice. Returns base64-encoded audio.
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
Convert text to speech with a selected ElevenLabs voice. Returns base64-encoded audio. It is categorised as a Execute tool in the UnClick MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
elevenlabs_text_to_speech accepts 9 parameters: text, style, api_key, model_id, voice_id, stability, output_format, similarity_boost, use_speaker_boost. Required: text, api_key, voice_id. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for elevenlabs_text_to_speech: 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 UnClick. Nothing to install.
elevenlabs_text_to_speech is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the elevenlabs_text_to_speech 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 elevenlabs_text_to_speech. 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.
elevenlabs_text_to_speech is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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