List all replies to a comment on a file
AI agents call drive_file_list_replies 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 queries and retrieves existing comment replies from a file. It performs a read-only operation with no capability to modify, delete, create, or execute any actions. The blast radius is minimal—an AI agent cannot cause damage by listing replies, only access existing collaboration data that the user would have permission to view anyway.
From the tool's definition Tool name 'drive_file_list_replies' and description 'List all replies to a comment on a file' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all replies to a comment on a file. 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_file_list_replies: 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_file_list_replies 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_file_list_replies 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_file_list_replies. 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_file_list_replies 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.
Every MCP server has a record like this.
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