Lookup a phone number: carrier, country, line type, spam signals.
AI agents call phone_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.
This tool retrieves publicly or semi-publicly available information about phone numbers (carrier details, geolocation, line type classification, spam reputation signals). It is fundamentally a query/lookup function that reads data and returns results with no side effects, no code execution, no data modification, and no destructive operations. The OSINT context confirms this is reconnaissance-focused data gathering.
From the tool's definition Tool performs lookup operations ('Lookup a phone number: carrier, country, line type, spam signals') which retrieve and query data about phone numbers without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
Lookup a phone number: carrier, country, line type, spam signals. 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 phone_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.
phone_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 phone_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 phone_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.
phone_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.
Teams ship this data inside their own products. See what a licence covers →