list_move · AWS IoT SiteWise MCP Server MCP: Risk & Policy

WHAT IT DOES

What list_move does on AWS IoT SiteWise MCP Server

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

WHY IT NEEDS A POLICY

Why list_move needs a policy

Moving an element from one list to another is a reversible write operation: it modifies the state of two lists (removes from source, adds to destination). It is not purely destructive since the data is not deleted, but it does alter existing data structures. The description is brief and lacks detail about what 'lists' refer to in the IoT SiteWise context, which reduces confidence slightly.

From the tool's definition 'Move element from one list to another' — moves data between lists, which modifies state in both source and destination lists

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 AWS IoT SiteWise 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 AWS IoT SiteWise 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 AWS IoT SiteWise 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 AWS IoT SiteWise 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 AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.