Get entities that are related to a specific entity. Shows connections like service dependencies, infrastructure relationships, and dashboard associations.
AI agents call list_related_entities to retrieve information from NewRelic MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays relationship data between entities in NewRelic without modifying any data, executing commands, or triggering external operations. It is a read-only query operation that returns monitoring metadata. The low severity reflects that misuse would only expose monitoring information already accessible to users with NewRelic access.
From the tool's definition Tool name is 'list_related_entities' with description stating it 'Get entities that are related to a specific entity' and 'Shows connections like service dependencies, infrastructure relationships, and dashboard associations.' The verbs 'Get' and 'Shows'…
Attacks that exploit this kind of access
Get entities that are related to a specific entity. Shows connections like service dependencies, infrastructure relationships, and dashboard associations. It is categorised as a Read tool in the NewRelic MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NewRelic MCP Server MCP server in PolicyLayer and add a rule for list_related_entities: 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 NewRelic MCP Server. Nothing to install.
list_related_entities 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 list_related_entities 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 list_related_entities. 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.
list_related_entities is provided by the NewRelic MCP Server MCP server (ruminaider/newrelic-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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