AI agents call list-billing-groups to retrieve information from Amazon Translate MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the tool name suggesting a billing-related query, the absence of a description limits confidence in the exact scope. However, 'list' operations are fundamentally Read actions—they retrieve and enumerate data without side effects. The low severity reflects that listing billing groups, even if sensitive, poses minimal risk compared to modifying or deleting data.
From the tool's definition Tool name 'list-billing-groups' with no description provided. The 'list' prefix typically indicates a query/retrieval operation that does not modify state.
Documented attack patterns abuse exactly the kind of access list-billing-groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon Translate MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list-billing-groups:
{
"version": "1",
"default": "deny",
"tools": {
"list-billing-groups": {}
}
} list-billing-groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list-billing-groups. It is categorised as a Read tool in the Amazon Translate MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon Translate MCP Server MCP server in PolicyLayer and add a rule for list-billing-groups: 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 Translate MCP Server. Nothing to install.
list-billing-groups 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-groups 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-groups. 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-groups is provided by the Amazon Translate MCP Server MCP server (awslabs.amazon-translate-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Amazon Translate MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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