cost-explorer
AI agents call cost-explorer 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.
Cost-explorer typically provides read-only access to billing and cost analysis data. AWS Cost Explorer is a standard AWS service for viewing and analyzing costs without the ability to modify accounts, resources, or execute transactions. The empty description reduces confidence, but the tool name and AWS service context strongly indicate a Read operation.
From the tool's definition Tool name 'cost-explorer' suggests querying cost and financial data without modification. However, the description is empty, limiting confidence in the classification.
Attacks that exploit this kind of access
cost-explorer. 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 cost-explorer: 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.
cost-explorer 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 cost-explorer 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 cost-explorer. 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.
cost-explorer 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.