Analyze recent sent emails to find your most frequently contacted email addresses. No extra API scope needed.
AI agents call get_frequent_contacts 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 and analyzes metadata from existing sent emails to identify patterns (frequent contacts). It performs no mutations, deletions, or external operations. The operation is read-only analysis of email history. While it does expose contact information, this is derived from user's own sent mail and requires no privileged API scope beyond what the Gmail MCP server already provides.
From the tool's definition Tool description states it 'Analyze[s] recent sent emails to find your most frequently contacted email addresses' - a query operation with no modification or deletion of data. No action verbs indicating side effects.
Attacks that exploit this kind of access
Analyze recent sent emails to find your most frequently contacted email addresses. No extra API scope needed. 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 get_frequent_contacts: 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.
get_frequent_contacts 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 get_frequent_contacts 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 get_frequent_contacts. 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.
get_frequent_contacts is provided by the Gmail MCP Server MCP server (neutral-stage/gmail-mcp-server). 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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