Search emails using Gmail query syntax. Returns a list of matching emails with subject, sender, date, and snippet. Use Gmail search operators like
AI agents call gmail_search 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.
gmail_search retrieves and queries email data without side effects. It returns matching emails but does not create, modify, delete, or execute operations. This is a straightforward read operation with minimal risk—the worst outcome is exposing email metadata (subject, sender, date, snippet) that the authenticated user already has access to.
From the tool's definition Tool description states 'Search emails using Gmail query syntax' and 'Returns a list of matching emails'; the server description emphasizes 'read-only access to your inbox'; no modification, deletion, or execution capabilities are described.
Attacks that exploit this kind of access
Search emails using Gmail query syntax. Returns a list of matching emails with subject, sender, date, and snippet. Use Gmail search operators like. 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 gmail_search: 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.
gmail_search 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_search 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_search. 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_search is provided by the Gmail MCP Server MCP server (murphy360/mcp_gmail). 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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