Look up the Caller Name (CNAM) for a phone number via TransUnion LIDB. Returns the calling_name (up to 15 characters), calling_name_status (available/unavailable), and presentation_indicator (allowed/restricted). Results are cached server-side for 24 hours.
AI agents call cnam_lookup to retrieve information from Telique MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward data retrieval tool that queries existing CNAM information associated with a phone number. It has no side effects, does not modify data, and does not execute code or trigger external operations beyond returning pre-stored information.
From the tool's definition Tool description explicitly states it 'Look[s] up' and 'Returns' CNAM data with no modification or deletion capabilities. The server purpose is 'querying telecom routing data'.
Attacks that exploit this kind of access
Look up the Caller Name (CNAM) for a phone number via TransUnion LIDB. Returns the calling_name (up to 15 characters), calling_name_status (available/unavailable), and presentation_indicator (allowed/restricted). Results are cached server-side for 24 hours. It is categorised as a Read tool in the Telique MCP MCP Server, which means it retrieves data without modifying state.
Register the Telique MCP server in PolicyLayer and add a rule for cnam_lookup: 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 Telique MCP. Nothing to install.
cnam_lookup 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 cnam_lookup 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 cnam_lookup. 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.
cnam_lookup is provided by the Telique MCP server (ringer/telique-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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