List saved audio files in the output directory with metadata
AI agents call list_output_files to retrieve information from Advanced TTS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves metadata about audio files in a directory. It performs no data modification, deletion, or execution of external operations. The capability to list files is a standard read operation with minimal security risk—an AI agent could at worst enumerate files but cannot alter, delete, or execute them. Severity is low because file enumeration has limited blast radius in most contexts.
From the tool's definition Tool name 'list_output_files' and description 'List saved audio files in the output directory with metadata' indicate a read-only operation that retrieves and queries existing data without modification or side effects.
Attacks that exploit this kind of access
List saved audio files in the output directory with metadata. It is categorised as a Read tool in the Advanced TTS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Advanced TTS MCP Server MCP server in PolicyLayer and add a rule for list_output_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 Advanced TTS MCP Server. Nothing to install.
list_output_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 list_output_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 list_output_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.
list_output_files is provided by the Advanced TTS MCP Server MCP server (samihalawa/advanced-tts-mcp). 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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