demote_participants · Zappaz MCP Server MCP: Risk & Policy

WHAT IT DOES

What demote_participants does on Zappaz MCP Server

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

WHY IT NEEDS A POLICY

Why demote_participants needs a policy

This tool modifies group state by altering participant permissions (demoting admins to regular members), which is a reversible Write operation. It does not delete data (Destructive), does not execute arbitrary code (Execute), and does not involve financial transactions (Financial).

From the tool's definition Tool name 'demote_participants' and description indicating it changes participant roles from administrators to members in a WhatsApp group via the Zappaz API.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

demote_participants Rate-limited

demote_participants 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": {
    "demote_participants": {
      "limits": [
        {
          "counter": "demote_participants_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 Zappaz MCP Server, so you can run agents against it safely.

FAQ

Questions about demote_participants

What does the demote_participants tool do? +

Rebaixa participantes de administradores a membros de um grupo na Zappaz API. It is categorised as a Write tool in the Zappaz 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 demote_participants? +

Register the Zappaz MCP Server MCP server in PolicyLayer and add a rule for demote_participants: 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 Zappaz MCP Server. Nothing to install.

What risk level is demote_participants? +

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

Can I rate-limit demote_participants? +

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

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

demote_participants is provided by the Zappaz MCP Server MCP server (viiniolliveira/zappaz-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.