set_move · Amazon MQ MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_move does on Amazon MQ MCP Server

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

WHY IT NEEDS A POLICY

Why set_move needs a policy

The operation creates or modifies data in a reversible manner (members can be moved back), fitting the Write category. Severity is medium because moving members between sets in a message broker context could disrupt message routing or service organization, but the action is reversible and does not cause permanent data loss or financial impact.

From the tool's definition Tool name 'set_move' and description 'Move member from one set to another' indicates the tool modifies data by relocating a member between sets, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_move Rate-limited

set_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": {
    "set_move": {
      "limits": [
        {
          "counter": "set_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 MQ MCP Server, so you can run agents against it safely.

FAQ

Questions about set_move

What does the set_move tool do? +

Move member from one set to another. It is categorised as a Write tool in the Amazon MQ 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 set_move? +

Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for set_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 MQ MCP Server. Nothing to install.

What risk level is set_move? +

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

Can I rate-limit set_move? +

Yes. Add a rate_limit block to the set_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 set_move completely? +

Set action: deny in the PolicyLayer policy for set_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 set_move? +

set_move 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.