Lists the delegates for the specified account
AI agents call list_delegates to retrieve information from Gmail 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 information about account delegates without modifying, deleting, or executing any actions. However, the sensitivity is elevated to 'medium' because delegate information can reveal who has access to an account, which is security-relevant data. A malicious agent gaining access to this information could identify delegation patterns and potentially exploit trust relationships.
From the tool's definition Tool name 'list_delegates' and description 'Lists the delegates for the specified account' indicate a retrieval operation with no side effects. The word 'Lists' confirms a read-only query.
Attacks that exploit this kind of access
Lists the delegates for the specified account. It is categorised as a Read tool in the Gmail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for list_delegates: 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 Gmail MCP Server. Nothing to install.
list_delegates 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_delegates 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_delegates. 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_delegates is provided by the Gmail MCP Server MCP server (nk900600/gmail-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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