Remove a previously-set alias mapping for a JID.
AI agents call unmerge_jid 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.
Removing an alias mapping is an irreversible deletion of configuration data. Once the alias is removed, the mapping is gone and would need to be manually recreated. This aligns with Destructive rather than Write, as it deletes an existing association rather than modifying it reversibly.
From the tool's definition Remove a previously-set alias mapping for a JID
Attacks that exploit this kind of access
Remove a previously-set alias mapping for a JID. 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 unmerge_jid: 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.
unmerge_jid 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 unmerge_jid 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 unmerge_jid. 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.
unmerge_jid 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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