Clear cached dictionary data so the next lookup fetches fresh results.
AI agents call refresh_dictionary to permanently remove resources in Phenomenai — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call refresh_dictionary doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Phenomenai is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Clear cached dictionary data so the next lookup fetches fresh results. It is categorised as a Destructive tool in the Phenomenai MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Phenomenai MCP server in PolicyLayer and add a rule for refresh_dictionary: 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 Phenomenai. Nothing to install.
refresh_dictionary 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 refresh_dictionary 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 refresh_dictionary. 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.
refresh_dictionary is provided by the Phenomenai MCP server (phenomenai-org/ai-dictionary-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.
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