Find an email address using domain and name information.
AI agents call hunter_find_email to retrieve information from Hunter Io MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a third-party email database to find contact information. It is a read-only lookup operation with no side effects on data stored in Hunter.io or the user's systems. Even if misused, it only exposes existing public or semi-public email addresses; it does not create, modify, delete, execute code, or commit financial transactions.
From the tool's definition Tool description states 'Find an email address using domain and name information' — a query operation that retrieves data without modifying or deleting anything.
Attacks that exploit this kind of access
Find an email address using domain and name information. It is categorised as a Read tool in the Hunter Io MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Hunter Io MCP Server MCP server in PolicyLayer and add a rule for hunter_find_email: 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 Hunter Io MCP Server. Nothing to install.
hunter_find_email 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 hunter_find_email 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 hunter_find_email. 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.
hunter_find_email is provided by the Hunter Io MCP Server MCP server (meerkats-ai/hunter-io-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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