Leave a group. Cannot be undone without an invite link.
AI agents call group_leave to permanently remove resources in Wa Bridge — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool performs an irreversible action that removes the agent's presence from a WhatsApp group. While not data deletion in the traditional sense, it permanently alters group membership state without the ability to undo unless a new invite link is obtained.
From the tool's definition "Leave a group. Cannot be undone without an invite link." — the explicit statement that the action cannot be undone marks this as irreversible. Leaving a group removes the user from a communication channel permanently unless re-invited.
Attacks that exploit this kind of access
Leave a group. Cannot be undone without an invite link. It is categorised as a Destructive tool in the Wa Bridge MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Wa Bridge MCP server in PolicyLayer and add a rule for group_leave: 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 Wa Bridge. Nothing to install.
group_leave is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the group_leave 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.
Set action: deny in the PolicyLayer policy for group_leave. 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.
group_leave is provided by the Wa Bridge MCP server (obirimensah05/whatsapp-bridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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