mocoVoice MCP server が利用できる音声・動画ファイル一覧を返却します
AI agents call SHOW_AVAILABLE_FILES to retrieve information from mocoVoice 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 read-only query operation that lists available files without creating, modifying, deleting, or executing anything. It has minimal blast radius even if misused by an agent, as it only exposes file metadata/availability information. The Japanese description confirms it is purely informational.
From the tool's definition Tool description states it 'returns a list of audio/video files available to the mocoVoice MCP server' (translated from Japanese: "returns a list of audio and video files that the mocoVoice MCP server can use").
Attacks that exploit this kind of access
mocoVoice MCP server が利用できる音声・動画ファイル一覧を返却します. It is categorised as a Read tool in the mocoVoice MCP Server MCP Server, which means it retrieves data without modifying state.
Register the mocoVoice MCP Server MCP server in PolicyLayer and add a rule for SHOW_AVAILABLE_FILES: 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 mocoVoice MCP Server. Nothing to install.
SHOW_AVAILABLE_FILES 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 SHOW_AVAILABLE_FILES 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 SHOW_AVAILABLE_FILES. 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.
SHOW_AVAILABLE_FILES is provided by the mocoVoice MCP Server MCP server (mocomoco-inc/mocovoice-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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