invite_auth_user · Run402 MCP: Risk & Policy

WHAT IT DOES

What invite_auth_user does on Run402

AI agents use invite_auth_user to create or update resources in Run402 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Run402 environment.

WHY IT NEEDS A POLICY

Why invite_auth_user needs a policy

This tool creates or modifies user authentication records and generates magic link invitations, which are reversible write operations. While it impacts access control, it does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool description states 'Create/update a project auth user and send a trusted invite magic link.' The verbs 'create/update' indicate reversible data modification. The tool modifies authentication records and sends communications that establish user access.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

invite_auth_user Rate-limited

invite_auth_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": {
    "invite_auth_user": {
      "limits": [
        {
          "counter": "invite_auth_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 Run402, so you can run agents against it safely.

FAQ

Questions about invite_auth_user

What does the invite_auth_user tool do? +

Create/update a project auth user and send a trusted invite magic link. Requires service_key and an allowed redirect_url. It is categorised as a Write tool in the Run402 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on invite_auth_user? +

Register the Run402 MCP server in PolicyLayer and add a rule for invite_auth_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 Run402. Nothing to install.

What risk level is invite_auth_user? +

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

Can I rate-limit invite_auth_user? +

Yes. Add a rate_limit block to the invite_auth_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 invite_auth_user completely? +

Set action: deny in the PolicyLayer policy for invite_auth_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 invite_auth_user? +

invite_auth_user is provided by the Run402 MCP server (kychee-com/run402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.