Remove the barrier
AI agents call remove_barrier to permanently remove resources in Ice Puzzle — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Removing a barrier from a level is a destructive action that deletes a game element. While the level itself may still exist, the barrier removal is likely not easily undone (no mention of undo functionality), and in the context of a level editor, deleting elements can affect level integrity. Severity is medium since it affects level design data rather than financial or system-critical resources.
From the tool's definition 'Remove the barrier' — the tool removes a level element, which is an irreversible deletion of a game object from the level design.
Attacks that exploit this kind of access
Remove the barrier. It is categorised as a Destructive tool in the Ice Puzzle MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Ice Puzzle MCP server in PolicyLayer and add a rule for remove_barrier: 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 Ice Puzzle. Nothing to install.
remove_barrier 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 remove_barrier 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 remove_barrier. 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.
remove_barrier is provided by the Ice Puzzle MCP server (wmoten/ice-puzzle-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →