Look up tandem routing information. Query by NPA+NXX, switch CLLI, tandem CLLI, or carrier name pattern. Returns tandem switch, OCN, LATA, and routing path via SQL JOINs across lerg_6, lerg_7_sha, and lerg_1.
AI agents call lerg_tandem 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 tool performs read-only queries against telecommunications routing databases (LERG tables). It retrieves lookup results based on input parameters (NPA+NXX, CLLI, carrier name) and returns informational data about tandem switches and routing paths. There are no side effects, no data modifications, no deletions, and no arbitrary code execution.
From the tool's definition Tool description states it 'Look up tandem routing information' and 'Returns tandem switch, OCN, LATA, and routing path' — purely querying and retrieving telecom routing data with no modifications, deletions, or code execution.
Attacks that exploit this kind of access
Look up tandem routing information. Query by NPA+NXX, switch CLLI, tandem CLLI, or carrier name pattern. Returns tandem switch, OCN, LATA, and routing path via SQL JOINs across lerg_6, lerg_7_sha, and lerg_1. 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 lerg_tandem: 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.
lerg_tandem 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 lerg_tandem 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 lerg_tandem. 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.
lerg_tandem 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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