AI agents call list_narrators to retrieve information from VOICEPEAK MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple enumeration of available voice narrators in the VOICEPEAK system. It retrieves information without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an attacker gains only knowledge of narrator options, which is non-sensitive configuration metadata. This is a straightforward Read category tool.
From the tool's definition Tool name 'list_narrators' and description 'List all available narrators' indicate a query operation that retrieves configuration data without modification or side effects.
Documented attack patterns abuse exactly the kind of access list_narrators gives an agent:
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 list_narrators:
{
"version": "1",
"default": "deny",
"tools": {
"list_narrators": {}
}
}list_narrators is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all available narrators. It is categorised as a Read tool in the VOICEPEAK MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VOICEPEAK MCP Server MCP server in PolicyLayer and add a rule for list_narrators: 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.
list_narrators 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 list_narrators 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 list_narrators. 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.
list_narrators 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.
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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10 VOICEPEAK MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.