Get list of available speakers (voice characters)
AI agents call get_speakers to retrieve information from MCP Simple AivisSpeech without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns configuration data (available voice options) without creating, modifying, deleting, or executing any operations. It is a straightforward informational read operation with minimal risk.
From the tool's definition Tool name 'get_speakers' and description 'Get list of available speakers (voice characters)' indicate a simple retrieval operation with no modifications or side effects.
Documented attack patterns abuse exactly the kind of access get_speakers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Simple AivisSpeech, and nothing reaches the server without passing your rules. This is the rule we recommend for get_speakers:
{
"version": "1",
"default": "deny",
"tools": {
"get_speakers": {}
}
}get_speakers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get list of available speakers (voice characters). It is categorised as a Read tool in the MCP Simple AivisSpeech MCP Server, which means it retrieves data without modifying state.
Register the MCP Simple AivisSpeech MCP server in PolicyLayer and add a rule for get_speakers: 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 MCP Simple AivisSpeech. Nothing to install.
get_speakers 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_speakers 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_speakers. 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_speakers is provided by the MCP Simple AivisSpeech MCP server (shinshin86/mcp-simple-aivisspeech). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Simple AivisSpeech, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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4 MCP Simple AivisSpeech tools catalogued and risk-classified — across an index of 43,000+ MCP servers.