Deletes a Retell agent
AI agents call delete_agent to permanently remove resources in Retellai — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes an agent resource with no stated undo capability. Deletion is an irreversible destructive action. While not directly financial or code-execution, the loss of a configured agent (which likely controls call handling and conversation logic) could disrupt business operations.
From the tool's definition Tool name and description: "delete_agent" "Deletes a Retell agent". The verb "delete" directly indicates irreversible removal of data (the agent configuration/resource).
Attacks that exploit this kind of access
Deletes a Retell agent. It is categorised as a Destructive tool in the Retellai MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Retellai MCP server in PolicyLayer and add a rule for delete_agent: 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 Retellai. Nothing to install.
delete_agent 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 delete_agent 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 delete_agent. 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.
delete_agent is provided by the Retellai MCP server (@abhaybabbar/retellai-mcp-server). 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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