list_move · Amazon SageMaker AI MCP Server MCP

WHAT IT DOES

What list_move does on Amazon SageMaker AI MCP Server

AI agents use list_move to create or update resources in Amazon SageMaker AI MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Amazon SageMaker AI MCP Server environment.

WHY IT NEEDS A POLICY

Why list_move needs a policy

Moving an element from one list to another is a write operation: it modifies two lists (removes from source, adds to destination). It is potentially reversible by moving back, so it doesn't qualify as Destructive. The description is brief and lacks detail about what 'lists' represent in the SageMaker context, which lowers confidence slightly.

From the tool's definition 'Move element from one list to another' — moves data between lists, which is a reversible modification of list state

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

list_move Rate-limited

list_move stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_move": {
      "limits": [
        {
          "counter": "list_move_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Amazon SageMaker AI MCP Server, so you can run agents against it safely.

FAQ

Questions about list_move

What does the list_move tool do? +

Move element from one list to another. It is categorised as a Write tool in the Amazon SageMaker AI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on list_move? +

Register the Amazon SageMaker AI MCP Server MCP server in PolicyLayer and add a rule for list_move: 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 SageMaker AI MCP Server. Nothing to install.

What risk level is list_move? +

list_move is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit list_move? +

Yes. Add a rate_limit block to the list_move 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 list_move completely? +

Set action: deny in the PolicyLayer policy for list_move. 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 list_move? +

list_move is provided by the Amazon SageMaker AI MCP Server MCP server (awslabs.sagemaker-ai-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.