AI agents call memory_list_actors to retrieve information from Amazon EKS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name implies it retrieves or enumerates actors from memory/state without side effects. While the description is empty (lowering confidence slightly), the '_list_' verb pattern is characteristic of Read operations. In the EKS context, this likely retrieves information about actors (pods, nodes, or processes) without altering them. No evidence of creation, deletion, execution, or financial operations.
From the tool's definition Tool name 'memory_list_actors' suggests listing or querying actor data. The '_list_' pattern in naming convention indicates retrieval/enumeration without modification.
Documented attack patterns abuse exactly the kind of access memory_list_actors gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon EKS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for memory_list_actors:
{
"version": "1",
"default": "deny",
"tools": {
"memory_list_actors": {}
}
}memory_list_actors is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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memory_list_actors. It is categorised as a Read tool in the Amazon EKS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon EKS MCP Server MCP server in PolicyLayer and add a rule for memory_list_actors: 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 EKS MCP Server. Nothing to install.
memory_list_actors 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 memory_list_actors 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 memory_list_actors. 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.
memory_list_actors is provided by the Amazon EKS MCP Server MCP server (awslabs.eks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Amazon EKS 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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