delete_event

Delete calendar event

SERVERNcp SOURCE@portel/ncp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-portel-dev-ncp/delete-event.md

WHAT IT DOES

What delete_event does on Ncp

AI agents call delete_event to permanently remove resources in Ncp, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_event is rated Critical

This tool permanently removes calendar event data without the ability to undo the operation. While the blast radius is somewhat limited to calendar events rather than critical system data, the irreversible nature of deletion and potential for calendar disruption (missed meetings, appointments) when misused by an AI agent justifies the Destructive category and high severity rating.

From the tool's definition Tool name is 'delete_event' with description 'Delete calendar event'. The verb 'Delete' indicates irreversible removal of data (a calendar event).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_event safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ncp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_event, this is the rule to start with:

delete_event Hidden

delete_event is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_event"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ncp, apply this rule, and every delete_event call is checked against it from then on.

FAQ

Questions about delete_event

What does the delete_event tool do? +

Delete calendar event. It is categorised as a Destructive tool in the Ncp MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_event? +

Register the Ncp MCP server in PolicyLayer and add a rule for delete_event: 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 Ncp. Nothing to install.

What risk level is delete_event? +

delete_event is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_event? +

Yes. Add a rate_limit block to the delete_event 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.

How do I block delete_event completely? +

Set action: deny in the PolicyLayer policy for delete_event. 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.

What MCP server provides delete_event? +

delete_event is provided by the Ncp MCP server (@portel/ncp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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