AI agents call list_dir_and_files to retrieve information from MCP Playlist Generator without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool lists directories and files without modifying them. This is a retrieval operation with no side effects. Given the sibling tools and server purpose (playlist generation from local music metadata), this tool likely enumerates files for metadata extraction. The empty description lowers confidence slightly, but the tool name and context are unambiguous for a read classification.
From the tool's definition Tool name 'list_dir_and_files' indicates directory and file listing operations. Server context shows file enumeration is a core capability (evidenced by sibling tools: 'list_allowed_directory', 'search_files', 'read_playlist_content').
Documented attack patterns abuse exactly the kind of access list_dir_and_files gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Playlist Generator, and nothing reaches the server without passing your rules. This is the rule we recommend for list_dir_and_files:
{
"version": "1",
"default": "deny",
"tools": {
"list_dir_and_files": {}
}
}list_dir_and_files is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list_dir_and_files. It is categorised as a Read tool in the MCP Playlist Generator MCP Server, which means it retrieves data without modifying state.
Register the MCP Playlist Generator MCP server in PolicyLayer and add a rule for list_dir_and_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 MCP Playlist Generator. Nothing to install.
list_dir_and_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_dir_and_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_dir_and_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_dir_and_files is provided by the MCP Playlist Generator MCP server (m4dd0c/playlist-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Playlist Generator, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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9 MCP Playlist Generator tools catalogued and risk-classified — across an index of 43,000+ MCP servers.