create_topic · Amazon MQ MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_topic does on Amazon MQ MCP Server

AI agents use create_topic 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 create_topic needs a policy

Creating a topic in a message broker modifies the broker configuration reversibly (topics can be deleted). This is a Write operation—it creates a new resource but doesn't irreversibly delete data or execute arbitrary code. Severity is medium because misuse could create unwanted topics consuming resources, but the impact is containable via deletion.

From the tool's definition Tool name 'create_topic' and server context indicate this creates a message broker topic in Amazon MQ. The description is empty, limiting confidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_topic Rate-limited

create_topic 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": {
    "create_topic": {
      "limits": [
        {
          "counter": "create_topic_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 create_topic

What does the create_topic tool do? +

create_topic. 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 create_topic? +

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

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

Can I rate-limit create_topic? +

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

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

create_topic 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.