Remove ingress rule from security group
AI agents call revoke_security_group_ingress to permanently remove resources in CloudStack MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Revoking a security group ingress rule irreversibly removes a firewall/access-control rule. While it may be possible to re-add the rule, the act of removal is not automatically undoable and can disrupt network connectivity or expose services to unintended access patterns. This is a destructive operation with high blast radius as it can affect network access for all resources associated with the security group.
From the tool's definition 'Remove ingress rule from security group' — permanently removes a network security rule
Attacks that exploit this kind of access
Remove ingress rule from security group. It is categorised as a Destructive tool in the CloudStack MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the CloudStack MCP Server MCP server in PolicyLayer and add a rule for revoke_security_group_ingress: 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 CloudStack MCP Server. Nothing to install.
revoke_security_group_ingress 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 revoke_security_group_ingress 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 revoke_security_group_ingress. 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.
revoke_security_group_ingress is provided by the CloudStack MCP Server MCP server (mozg31337/cloudstack-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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