Cancel a running or pending simulation.
AI agents call lexq_simulation_cancel to permanently remove resources in LexQ — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cancelling a simulation is an irreversible action — once cancelled, the simulation run is terminated and its progress is lost. This cannot be undone (you cannot 'un-cancel' a simulation; you would have to restart it). This fits the Destructive category. Severity is medium because the blast radius is limited to losing simulation results/progress, not production data or financial assets.
From the tool's definition Cancel a running or pending simulation
Attacks that exploit this kind of access
Cancel a running or pending simulation. It is categorised as a Destructive tool in the LexQ MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the LexQ MCP server in PolicyLayer and add a rule for lexq_simulation_cancel: 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 LexQ. Nothing to install.
lexq_simulation_cancel 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 lexq_simulation_cancel 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 lexq_simulation_cancel. 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.
lexq_simulation_cancel is provided by the LexQ MCP server (lexq-io/lexq-cli). 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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