get-cost-and-usage · Amazon MQ MCP Server MCP: Risk & Policy

WHAT IT DOES

What get-cost-and-usage does on Amazon MQ MCP Server

AI agents call get-cost-and-usage 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.

WHY IT NEEDS A POLICY

Why get-cost-and-usage needs a policy

This tool retrieves financial metrics and billing information without modifying, deleting, or executing operations. It is a read-only query of AWS cost data. While the data concerns finances, the tool itself performs no financial transactions (payments, refunds, commitments), so it does not qualify as Financial category.

From the tool's definition Tool name 'get-cost-and-usage' indicates retrieval of cost and usage data. No verbs like create, update, delete, or execute are present. The empty description limits confirmation, but the naming convention strongly suggests a query/retrieval operation.

Attacks that exploit this kind of access

Questions about get-cost-and-usage

What does the get-cost-and-usage tool do? +

get-cost-and-usage. It is categorised as a Read tool in the Amazon MQ MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get-cost-and-usage? +

Register the Amazon MQ 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 Amazon MQ MCP Server. Nothing to install.

What risk level is get-cost-and-usage? +

get-cost-and-usage is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get-cost-and-usage? +

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.

How do I block get-cost-and-usage completely? +

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.

What MCP server provides get-cost-and-usage? +

get-cost-and-usage 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.