Delete a category. Events in this category will become uncategorized.
AI agents call yaag_delete_category to permanently remove resources in YearAtAGlance MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool irreversibly deletes a category from the calendar system. While events are not themselves deleted, the category is permanently removed and associated events lose their categorization. This is a destructive operation that cannot be undone through normal tool use, making it more severe than a Write operation.
From the tool's definition Tool name contains 'delete' and description states 'Delete a category', which removes data irreversibly. The side effect that 'Events in this category will become uncategorized' indicates permanent modification of calendar data relationships.
Attacks that exploit this kind of access
Delete a category. Events in this category will become uncategorized. It is categorised as a Destructive tool in the YearAtAGlance MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the YearAtAGlance MCP Server MCP server in PolicyLayer and add a rule for yaag_delete_category: 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 YearAtAGlance MCP Server. Nothing to install.
yaag_delete_category 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 yaag_delete_category 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 yaag_delete_category. 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.
yaag_delete_category is provided by the YearAtAGlance MCP Server MCP server (mindfullabai/yearataglance-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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