List recent Gmail inbox messages for a configured account.
AI agents call gmail_recent_messages to retrieve information from Personal Mail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves existing mail data from a Gmail inbox. It performs no mutations, deletions, external command execution, or financial operations. The blast radius of misuse is limited to information disclosure of the user's recent emails. Even if an AI agent called this repeatedly, the only impact would be repeated reads of the same data.
From the tool's definition Tool name is 'gmail_recent_messages' and description states 'List recent Gmail inbox messages' — pure retrieval operation with no modification or execution.
Attacks that exploit this kind of access
List recent Gmail inbox messages for a configured account. It is categorised as a Read tool in the Personal Mail MCP Server, which means it retrieves data without modifying state.
Register the Personal Mail MCP server in PolicyLayer and add a rule for gmail_recent_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 Personal Mail. Nothing to install.
gmail_recent_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 gmail_recent_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 gmail_recent_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.
gmail_recent_messages is provided by the Personal Mail MCP server (srogerf/personal-mail-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.
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