list-custom-line-items
AI agents call list-custom-line-items 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.
The verb 'list' is characteristic of retrieval/query operations that fetch data without side effects. In the context of Amazon MQ management, this would retrieve billing or item configuration data. Without a description, confidence is moderate, but the naming strongly suggests a Read operation with low blast radius if misused by an agent.
From the tool's definition Tool name 'list-custom-line-items' indicates a retrieval operation ('list') querying custom line items. Empty description limits evidence but naming pattern aligns with Read operations.
Attacks that exploit this kind of access
list-custom-line-items. It is categorised as a Read tool in the Amazon MQ MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for list-custom-line-items: 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.
list-custom-line-items 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-custom-line-items 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-custom-line-items. 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-custom-line-items 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.