ListMetrics
AI agents call ListMetrics to retrieve information from AWS IoT SiteWise 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 metric information from AWS IoT SiteWise without causing side effects. The 'List' operation prefix is characteristic of Read operations that enumerate resources. No evidence suggests data modification, deletion, or execution of arbitrary operations. Confidence is slightly reduced due to empty description, but the naming convention and AWS service patterns support Read classification.
From the tool's definition Tool name 'ListMetrics' indicates a listing/query operation typical of Read category tools. The empty description limits certainty, but naming conventions in AWS IoT SiteWise and the 'List' prefix strongly suggest retrieval of metric metadata without…
Attacks that exploit this kind of access
ListMetrics. It is categorised as a Read tool in the AWS IoT SiteWise MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS IoT SiteWise 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 AWS IoT SiteWise 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 AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.