list-billing-group-cost-reports
AI agents call list-billing-group-cost-reports 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.
This tool retrieves billing and cost information, which is a Read operation (data retrieval with no side effects). However, it accesses sensitive financial data (cost reports), which elevates severity to medium due to the potential for exposure of cost/billing information that could reveal business operations, pricing models, or infrastructure spend.
From the tool's definition Tool name 'list-billing-group-cost-reports' indicates retrieval of billing/cost data; description is empty but the 'list' prefix and 'cost-reports' suffix strongly suggest a read-only operation that queries financial records without modification.
Attacks that exploit this kind of access
list-billing-group-cost-reports. 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 list-billing-group-cost-reports: 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.
list-billing-group-cost-reports 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-billing-group-cost-reports 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-billing-group-cost-reports. 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-billing-group-cost-reports 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.