ListMetrics
AI agents call ListMetrics to retrieve information from Amazon MQ MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
ListMetrics retrieves or queries metrics from Amazon MQ brokers with no side effects. This is a standard read operation for monitoring and observability. The absence of a description reduces confidence slightly, but the tool name itself clearly indicates a non-destructive retrieval operation.
From the tool's definition Tool name 'ListMetrics' indicates retrieval of metric data without modification. The empty description is uninformative, but the verb 'List' is a read-only operation consistent with querying monitoring data from AmazonMQ brokers.
Attacks that exploit this kind of access
ListMetrics. It is categorised as a Read tool in the Amazon MQ MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for ListMetrics: 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 Amazon MQ MCP Server. Nothing to install.
ListMetrics 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 ListMetrics 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 ListMetrics. 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.
ListMetrics is provided by the Amazon MQ MCP Server MCP server (awslabs.amazon-mq-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.