Remove a configured e-reader device.
AI agents call remove_device to permanently remove resources in Lyceum — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool deletes a device configuration from the Calibre library system. Deletion operations are irreversible—once a device is removed, its configuration is lost and must be manually re-added. This is a destructive action that fits the Destructive category.
From the tool's definition The tool 'remove_device' performs the action of removing a configured e-reader device. The verb 'remove' indicates deletion of a device configuration, which is an irreversible operation that cannot be undone without reconfiguration.
Attacks that exploit this kind of access
Remove a configured e-reader device. It is categorised as a Destructive tool in the Lyceum MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Lyceum MCP server in PolicyLayer and add a rule for remove_device: 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 Lyceum. Nothing to install.
remove_device 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_device 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_device. 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_device is provided by the Lyceum MCP server (matthewp/lyceum). 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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