List all Gmail labels (folders) for the account.
AI agents call listGmailLabels to retrieve information from Google Workspace MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward data retrieval operation by listing Gmail labels. It has no side effects, does not modify or delete data, does not execute code or commands, and does not involve financial transactions. The action is purely informational and read-only.
From the tool's definition Tool name 'listGmailLabels' and description 'List all Gmail labels (folders) for the account' indicate a query operation that retrieves existing labels without modification, deletion, or execution.
Attacks that exploit this kind of access
List all Gmail labels (folders) for the account. It is categorised as a Read tool in the Google Workspace MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for listGmailLabels: 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 Workspace MCP Server. Nothing to install.
listGmailLabels 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 listGmailLabels 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 listGmailLabels. 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.
listGmailLabels is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-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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