dictionary_find

THE RISK

Low Risk

Why dictionary_find needs a policy

This tool retrieves dictionary entries for pronunciation lookup without creating, modifying, or deleting data. It is a passive read operation used to support the VOICEPEAK text-to-speech system's pronunciation dictionary functionality. The blast radius of misuse is minimal—an AI agent could only retrieve existing pronunciation data, posing no risk to data integrity, execution, or finances.

From the tool's definition Tool name 'dictionary_find' and description 'Find dictionary entries by surface form' indicate a query/search operation with no modification or side effects.

Documented attack patterns abuse exactly the kind of access dictionary_find gives an agent:

POLICY

How to control dictionary_find

PolicyLayer is an MCP gateway — it sits between your AI agents and VOICEPEAK MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for dictionary_find:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "dictionary_find": {}
  }
}

dictionary_find is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register VOICEPEAK MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More VOICEPEAK MCP Server tools

Destructive dictionary_clear Clear all dictionary entries Destructive dictionary_remove Remove a dictionary entry Execute play Play a synthesized audio file Execute synthesize_and_play Synthesize speech from text and immediately play it (max 140 characters per synthesis) Write synthesize Synthesize speech from text using VOICEPEAK (max 140 characters per synthesis) Write dictionary_add Add or update a dictionary entry for custom pronunciation Read dictionary_list List all dictionary entries Read list_emotions List available emotions for a narrator

All 10 VOICEPEAK MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about dictionary_find

What does the dictionary_find tool do? +

Find dictionary entries by surface form. It is categorised as a Read tool in the VOICEPEAK MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on dictionary_find? +

Register the VOICEPEAK MCP Server MCP server in PolicyLayer and add a rule for dictionary_find: 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 VOICEPEAK MCP Server. Nothing to install.

What risk level is dictionary_find? +

dictionary_find is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit dictionary_find? +

Yes. Add a rate_limit block to the dictionary_find 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 dictionary_find completely? +

Set action: deny in the PolicyLayer policy for dictionary_find. 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 dictionary_find? +

dictionary_find is provided by the VOICEPEAK MCP Server MCP server (k2wanko/voicepeak-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every VOICEPEAK MCP Server tool call.

Start from VOICEPEAK MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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