List emails from Gmail inbox
AI agents call list-emails 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 performs a retrieval operation with no side effects; it queries Gmail data but does not create, modify, delete, or execute anything. It is categorized as Read. The severity is medium rather than low because email contents frequently include confidential, personally identifiable, or sensitive business data that could be misused if an AI agent oversteps its intended scope.
From the tool's definition Tool name and description: 'List emails from Gmail inbox' — retrieves a list of emails without modifying them. This is a read-only query operation.
Attacks that exploit this kind of access
List emails from Gmail inbox. 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-emails: 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-emails 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-emails 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-emails. 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-emails is provided by the Gmail MCP Server MCP server (solonabot/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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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