Delete a message for all participants.
AI agents call whatsapp_delete_message to permanently remove resources in WSAPI WhatsApp MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting messages is an irreversible operation that removes data permanently from conversations involving multiple participants. While the scope is limited to a single message rather than bulk data, the action cannot be undone and affects communication history. This qualifies as Destructive rather than Write (which covers reversible modifications).
From the tool's definition Tool name contains 'delete_message' and description states 'Delete a message for all participants.' The verb 'delete' and the irreversible nature of removing a message across all participants indicates a destructive operation.
Attacks that exploit this kind of access
Delete a message for all participants. It is categorised as a Destructive tool in the WSAPI WhatsApp MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the WSAPI WhatsApp MCP Server MCP server in PolicyLayer and add a rule for whatsapp_delete_message: 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 WSAPI WhatsApp MCP Server. Nothing to install.
whatsapp_delete_message 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 whatsapp_delete_message 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 whatsapp_delete_message. 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.
whatsapp_delete_message is provided by the WSAPI WhatsApp MCP Server MCP server (wsapi-chat/wsapi-mcp). 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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