Trim list to specified range.
AI agents call list_trim 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.
This tool retrieves or filters data from a list without side effects. It falls squarely into the Read category as it queries/transforms existing data. The low severity reflects minimal blast radius if misused—at worst, an AI agent could request irrelevant subsets of data. High confidence because the description clearly describes a non-destructive, read-only operation.
From the tool's definition Tool name 'list_trim' and description 'Trim list to specified range' indicate a data retrieval or transformation operation that reads a list and returns a subset. No creation, modification, deletion, or execution of external operations is described.
Attacks that exploit this kind of access
Trim list to specified range. 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_trim: 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_trim 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_trim 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_trim. 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_trim 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.