AI agents call drive_list_shared_drives to retrieve information from Google without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves/queries information about available shared drives without creating, modifying, or deleting any data. It has no side effects beyond fetching a list. Classification as Read is appropriate, with low severity since listing shared drives does not expose sensitive content by itself—it only reveals drive names and metadata that users typically have permission to access.
From the tool's definition Tool name 'drive_list_shared_drives' and description 'List available shared drives' indicate a retrieval operation with no data modification.
Attacks that exploit this kind of access
List available shared drives. It is categorised as a Read tool in the Google MCP Server, which means it retrieves data without modifying state.
Register the Google MCP server in PolicyLayer and add a rule for drive_list_shared_drives: 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 Google. Nothing to install.
drive_list_shared_drives 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 drive_list_shared_drives 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 drive_list_shared_drives. 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.
drive_list_shared_drives is provided by the Google MCP server (robcerda/google-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
drive_list_shared_drives is one line of Google's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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