Analyze an email address: MX records, service registrations (holehe),
AI agents call email_reputation to retrieve information from MCP OSINT Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Email reputation analysis retrieves existing public data about an email address without modifying, executing code, deleting data, or moving money. It is purely informational reconnaissance. Even though OSINT can be misused for harassment or privacy invasion, the tool itself performs only non-destructive read operations.
From the tool's definition Tool name 'email_reputation' and description 'Analyze an email address: MX records, service registrations (holehe)' indicate querying and analysis operations.
Attacks that exploit this kind of access
Analyze an email address: MX records, service registrations (holehe),. It is categorised as a Read tool in the MCP OSINT Server MCP Server, which means it retrieves data without modifying state.
Register the MCP OSINT Server MCP server in PolicyLayer and add a rule for email_reputation: 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 MCP OSINT Server. Nothing to install.
email_reputation 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 email_reputation 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 email_reputation. 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.
email_reputation is provided by the MCP OSINT Server MCP server (lliwi/osint-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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