Get error groups from TransactionError events. Groups errors by class and message to identify the most frequent and impactful errors.
AI agents call get_entity_error_groups 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 performs read-only analysis of existing error data. It queries TransactionError events and organizes them by class and message for reporting purposes. There are no side effects, no data modifications, no code execution, and no irreversible actions.
From the tool's definition Tool retrieves and groups error data from TransactionError events to identify frequent and impactful errors. Uses verbs 'Get' and 'Groups' which indicate data querying and analysis without modification.
Attacks that exploit this kind of access
Get error groups from TransactionError events. Groups errors by class and message to identify the most frequent and impactful errors. 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 get_entity_error_groups: 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.
get_entity_error_groups 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 get_entity_error_groups 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 get_entity_error_groups. 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.
get_entity_error_groups 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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