resend_user_invitation · Smokeball MCP: Risk & Policy

WHAT IT DOES

What resend_user_invitation does on Smokeball

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

WHY IT NEEDS A POLICY

Why resend_user_invitation needs a policy

This tool triggers sending an email, which is an external operation, but it's a resend of an existing invitation rather than creating new data or executing arbitrary code. It's best classified as Write since it re-initiates a communication action based on existing state.

From the tool's definition Resend an invitation email to a user

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

resend_user_invitation Rate-limited

resend_user_invitation 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": {
    "resend_user_invitation": {
      "limits": [
        {
          "counter": "resend_user_invitation_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 Smokeball, so you can run agents against it safely.

FAQ

Questions about resend_user_invitation

What does the resend_user_invitation tool do? +

Resend an invitation email to a user. It is categorised as a Write tool in the Smokeball MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on resend_user_invitation? +

Register the Smokeball MCP server in PolicyLayer and add a rule for resend_user_invitation: 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 Smokeball. Nothing to install.

What risk level is resend_user_invitation? +

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

Can I rate-limit resend_user_invitation? +

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

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

resend_user_invitation is provided by the Smokeball MCP server (rosenadvertising/smokeball-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.