Get storage quota information for the user
AI agents call drive_storage_quota to retrieve information from Google Drive MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves storage quota information—a data query operation. It does not modify, delete, or execute any operations. It has minimal security impact as it only exposes quota metadata that the authenticated user likely already knows or can easily discover through the UI.
From the tool's definition Tool name: drive_storage_quota. Description: 'Get storage quota information for the user'. The verb 'Get' and the query-oriented nature of retrieving quota metadata indicate a read-only operation with no side effects.
Attacks that exploit this kind of access
Get storage quota information for the user. It is categorised as a Read tool in the Google Drive MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Drive MCP Server MCP server in PolicyLayer and add a rule for drive_storage_quota: 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 Drive MCP Server. Nothing to install.
drive_storage_quota 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_storage_quota 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_storage_quota. 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_storage_quota is provided by the Google Drive MCP Server MCP server (rishipradeep-think41/google-drive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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