Retrieve cost and usage data with filtering
AI agents call get_cost_and_usage to retrieve information from Cost Explorer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries AWS Cost Explorer API to fetch cost and usage metrics. It retrieves and analyzes existing data without creating, modifying, deleting, or destroying any resources. The filtering capability is applied to existing datasets, not to execute arbitrary operations.
From the tool's definition Tool name includes 'get_' prefix and description states 'Retrieve cost and usage data with filtering' — purely a data retrieval operation with no modification or deletion capability.
Attacks that exploit this kind of access
Retrieve cost and usage data with filtering. It is categorised as a Read tool in the Cost Explorer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cost Explorer MCP Server MCP server in PolicyLayer and add a rule for get_cost_and_usage: 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 Cost Explorer MCP Server. Nothing to install.
get_cost_and_usage 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_cost_and_usage 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_cost_and_usage. 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_cost_and_usage is provided by the Cost Explorer MCP Server MCP server (milan9527/costexplorermcp). 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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