list_folders
AI agents call list_folders to retrieve information from Mcp Google Sheets without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'list_folders' function follows the common 'list' pattern associated with Read operations—querying and retrieving data (folder structures) without side effects. The empty description reduces confidence slightly, but the tool name strongly indicates a retrieval operation. In the context of a Google Sheets server, listing folders likely means reading metadata about available spreadsheet folders.
From the tool's definition Tool name is 'list_folders', which by naming convention retrieves or enumerates folder contents without modification. Description is empty, limiting full evidence.
Attacks that exploit this kind of access
list_folders. It is categorised as a Read tool in the Mcp Google Sheets MCP Server, which means it retrieves data without modifying state.
Register the Mcp Google Sheets MCP server in PolicyLayer and add a rule for list_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 Mcp Google Sheets. Nothing to install.
list_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_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_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_folders is provided by the Mcp Google Sheets MCP server (yardobr/mcp-google-sheets). 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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