AI agents call list_drive_folders to retrieve information from Gg 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 information about Drive folder structure with no side effects. It matches the Read category pattern of listing/retrieving data without creating, modifying, deleting, or executing operations. Severity is low because folder listings are typically non-sensitive metadata, though actual severity could vary based on folder contents visibility and organizational context.
From the tool's definition Tool 'list_drive_folders' retrieves folder listing from Google Drive with no modification capability. Description states 'List all folders' which is a query/retrieval operation.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
List all folders in Google Drive. parent_id: 'root' for main folder. It is categorised as a Read tool in the Gg MCP Server, which means it retrieves data without modifying state.
Register the Gg MCP server in PolicyLayer and add a rule for list_drive_folders: 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 Gg. Nothing to install.
list_drive_folders 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_drive_folders 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_drive_folders. 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_drive_folders is provided by the Gg MCP server (tannht/google-cloud-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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