remove_group_participant

THE RISK

Critical Risk

Why remove_group_participant needs a policy

Removing a participant from a group is a destructive, hard-to-reverse action: the participant loses access immediately and must be explicitly re-added. This warrants the Destructive category. Severity is medium since it affects group membership rather than financial or critical data, but misuse by an AI agent could cause unintended removal of users from communication channels.

From the tool's definition "Remove a participant from a WhatsApp group" — removing a participant is an irreversible action that expels a user from the group

Documented attack patterns abuse exactly the kind of access remove_group_participant gives an agent:

POLICY

How to control remove_group_participant

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for remove_group_participant:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "remove_group_participant"
  ]
}

remove_group_participant disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

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EXPLORE

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Go deeper

Critical-risk tools in Mcp Afip → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about remove_group_participant

What does the remove_group_participant tool do? +

Remove a participant from a WhatsApp group. It is categorised as a Destructive tool in the Mcp Afip MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on remove_group_participant? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for remove_group_participant: 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 Mcp Afip. Nothing to install.

What risk level is remove_group_participant? +

remove_group_participant is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit remove_group_participant? +

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

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

remove_group_participant is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →