Group must be empty.
AI agents call deletemediagroup to permanently remove resources in Revel Digital MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool name clearly indicates a delete operation on a media group. Delete operations are irreversible and classified as Destructive. The description 'Group must be empty' confirms it removes the group entity itself. Severity is high because deleting organizational groups in a digital signage system can disrupt content management structure.
From the tool's definition Tool name 'deletemediagroup' with description 'Group must be empty' — deletion of a media group is irreversible; the naming pattern matches sibling destructive tools (deletedevice, deletemedia, deleteplaylist, etc.).
Attacks that exploit this kind of access
Group must be empty. It is categorised as a Destructive tool in the Revel Digital MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Revel Digital MCP Server MCP server in PolicyLayer and add a rule for deletemediagroup: 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 Revel Digital MCP Server. Nothing to install.
deletemediagroup 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 deletemediagroup 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 deletemediagroup. 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.
deletemediagroup is provided by the Revel Digital MCP Server MCP server (reveldigital/reveldigital-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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