detach_group_policy
AI agents call detach_group_policy to permanently remove resources in Awslabs Valkey — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Detaching a group policy removes access controls from an IAM group, which can be a significant security action. While the policy itself is not deleted, the association is removed and permissions are revoked, which can be considered irreversible in impact. The description is empty, lowering confidence, but the name strongly suggests an IAM policy detachment operation.
From the tool's definition Tool name: 'detach_group_policy' — 'detach' implies removing an IAM policy from a group, which is an irreversible removal of permissions.
Attacks that exploit this kind of access
detach_group_policy. It is categorised as a Destructive tool in the Awslabs Valkey MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for detach_group_policy: 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 Awslabs Valkey. Nothing to install.
detach_group_policy 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 detach_group_policy 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 detach_group_policy. 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.
detach_group_policy is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.