list_gmail_messages
AI agents call list_gmail_messages to retrieve information from Google Connections without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists Gmail messages, which is a non-destructive query operation. It has no capability to modify, delete, execute commands, or perform financial transactions. Even if misused by an AI agent, listing messages only exposes existing data rather than modifying or destroying it.
From the tool's definition Tool name 'list_gmail_messages' indicates retrieval/querying of Gmail messages with no modification or deletion capability. The verb 'list' is a classic Read operation pattern.
Attacks that exploit this kind of access
list_gmail_messages. It is categorised as a Read tool in the Google Connections MCP Server, which means it retrieves data without modifying state.
Register the Google Connections MCP server in PolicyLayer and add a rule for list_gmail_messages: 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 Connections. Nothing to install.
list_gmail_messages 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_gmail_messages 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_gmail_messages. 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_gmail_messages is provided by the Google Connections MCP server (michaelzrork/google-connections-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →