List emails from Gmail with subject, sender, and body in Markdown format. Optionally filter and summarize results.
AI agents call listEmails to retrieve information from gmail-mcp MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
listEmails retrieves and queries email data from Gmail. The description confirms it lists emails and applies optional filtering/summarization, which are read-only operations.
From the tool's definition Tool description explicitly states 'List emails from Gmail with subject, sender, and body' and 'filter and summarize results' — purely retrieval operations with no modification or deletion capability.
Attacks that exploit this kind of access
List emails from Gmail with subject, sender, and body in Markdown format. Optionally filter and summarize results. It is categorised as a Read tool in the gmail-mcp MCP Server MCP Server, which means it retrieves data without modifying state.
Register the gmail-mcp MCP Server MCP server in PolicyLayer and add a rule for listEmails: 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 MCP Server. Nothing to install.
listEmails 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 listEmails 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 listEmails. 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.
listEmails is provided by the gmail-mcp MCP Server MCP server (mundume/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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