sorted_set_popmin · Amazon MQ MCP Server MCP: Risk & Policy

WHAT IT DOES

What sorted_set_popmin does on Amazon MQ MCP Server

AI agents use sorted_set_popmin 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 sorted_set_popmin needs a policy

This tool removes and returns members from a sorted set, which is a reversible write operation. While it modifies data by removing elements, the operation is transactional and can be undone by re-adding the members. It does not permanently destroy data or execute arbitrary code.

From the tool's definition Tool name 'sorted_set_popmin' and description 'Remove and return members with lowest scores' indicate modification of data structure (removal operation) rather than irreversible deletion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sorted_set_popmin Rate-limited

sorted_set_popmin 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": {
    "sorted_set_popmin": {
      "limits": [
        {
          "counter": "sorted_set_popmin_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 sorted_set_popmin

What does the sorted_set_popmin tool do? +

Remove and return members with lowest scores. 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 sorted_set_popmin? +

Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for sorted_set_popmin: 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 sorted_set_popmin? +

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

Can I rate-limit sorted_set_popmin? +

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

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

sorted_set_popmin 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.