put-user · Rabbitmq MCP: Risk & Policy

WHAT IT DOES

What put-user does on Rabbitmq

AI agents use put-user to create or update resources in Rabbitmq — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Rabbitmq environment.

PARAMETERS

Parameter	Type	Required
`name`	string	Yes
`tags`	string	—
`password`	string	—

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why put-user needs a policy

This tool modifies user records in RabbitMQ, which is a Write-category operation. It is reversible (users can be deleted or re-updated), so it does not qualify as Destructive. The severity is medium because unauthorized user creation/modification in a message broker could enable unauthorized access or privilege escalation, but the impact is localized to identity management rather than system-wide data loss.

From the tool's definition Tool name is 'put-user' with description 'Create or update a user.' The verbs 'create or update' indicate reversible modification of user data.

Risk signalsHandles credentials or secrets (password)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

put-user Rate-limited

put-user 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": {
    "put-user": {
      "limits": [
        {
          "counter": "put-user_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 Rabbitmq, so you can run agents against it safely.

FAQ

Questions about put-user

What does the put-user tool do? +

Create or update a user. It is categorised as a Write tool in the Rabbitmq MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does put-user accept? +

put-user accepts 3 parameters: name, tags, password. Required: name. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on put-user? +

Register the Rabbitmq MCP server in PolicyLayer and add a rule for put-user: 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 Rabbitmq. Nothing to install.

What risk level is put-user? +

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

Can I rate-limit put-user? +

Yes. Add a rate_limit block to the put-user 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 put-user completely? +

Set action: deny in the PolicyLayer policy for put-user. 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 put-user? +

put-user is provided by the Rabbitmq MCP server (rabbitmq-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.