Search emails across all inboxes by keyword.
AI agents call search_emails to retrieve information from Lobstermail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries email data based on search criteria. It is fundamentally a Read operation as it does not create, modify, delete, or execute arbitrary operations.
From the tool's definition Tool description states 'Search emails across all inboxes by keyword' — a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
Search emails across all inboxes by keyword. It is categorised as a Read tool in the Lobstermail MCP Server, which means it retrieves data without modifying state.
Register the Lobstermail MCP server in PolicyLayer and add a rule for search_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 Lobstermail. Nothing to install.
search_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 search_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 search_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.
search_emails is provided by the Lobstermail MCP server (lobster-kit/mcp-server-lobstermail). 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.
Teams ship this data inside their own products. See what a licence covers →