List files and folders in a Stage deployment's file system
AI agents call stage_list_files to retrieve information from SingleStore 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 operation by listing files and folders. It retrieves information about the file system structure without altering, creating, or destroying any data. The blast radius is minimal—an AI agent misusing this tool could only discover what files exist, not modify or access their contents. This is a standard read operation with low severity.
From the tool's definition Tool name 'stage_list_files' and description 'List files and folders in a Stage deployment's file system' indicate a retrieval operation that queries directory contents with no modification, creation, or deletion of data.
Documented attack patterns abuse exactly the kind of access stage_list_files gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SingleStore MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stage_list_files:
{
"version": "1",
"default": "deny",
"tools": {
"stage_list_files": {}
}
}stage_list_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 files and folders in a Stage deployment's file system. It is categorised as a Read tool in the SingleStore MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SingleStore MCP Server MCP server in PolicyLayer and add a rule for stage_list_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 SingleStore MCP Server. Nothing to install.
stage_list_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 stage_list_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 stage_list_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.
stage_list_files is provided by the SingleStore MCP Server MCP server (singlestore-labs/mcp-server-singlestore). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 24 SingleStore MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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24 SingleStore MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.