sam_init · Amazon MQ MCP Server MCP: Risk & Policy

WHAT IT DOES

What sam_init does on Amazon MQ MCP Server

AI agents call sam_init as a supporting operation in Amazon MQ MCP Server workflows.

WHY IT NEEDS A POLICY

Why sam_init needs a policy

The name 'sam_init' suggests AWS SAM (Serverless Application Model) initialization, which would typically be a Write or Execute operation (scaffolding a project or initializing infrastructure). However, given the server context (AmazonMQ broker management) and the completely empty description, the exact behavior is unclear. With no description to confirm the action, confidence is very low.

From the tool's definition Tool name is 'sam_init' but description is empty or uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sam_init Rate-limited

sam_init gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sam_init": {
      "limits": [
        {
          "counter": "sam_init_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR 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 sam_init

What does the sam_init tool do? +

sam_init. It is categorised as a Other tool in the Amazon MQ MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on sam_init? +

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

sam_init is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit sam_init? +

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

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

sam_init 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.