Critical Risk →

savvycal_cancel_event

Cancel a scheduled SavvyCal event. This action cannot be undone. Use this when: - A meeting needs to be canceled - A booking should be removed from your calendar Args: - id (string, required): The event ID to cancel — get from savvycal_list_events - response_format ("markdown" | "json"): ...

Part of the SavvyCal MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

arturkoter/savvycal-mcp-server Destructive Risk 4/5

AI agents may call savvycal_cancel_event to permanently remove or destroy resources in SavvyCal MCP Server. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. Intercept blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call savvycal_cancel_event in a loop, permanently destroying resources in SavvyCal MCP Server. There is no undo for destructive operations. Intercept blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

arturkoter-savvycal-mcp-server.yaml
tools:
  savvycal_cancel_event:
    rules:
      - action: deny
        reason: "Blocked by default — enable with approval"

See the full SavvyCal MCP Server policy for all 8 tools.

Tool Name savvycal_cancel_event
Category Destructive
Risk Level Critical

Agents calling destructive-class tools like savvycal_cancel_event have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Destructive risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

savvycal_cancel_event is one of the critical-risk operations in SavvyCal MCP Server. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

What does the savvycal_cancel_event tool do? +

Cancel a scheduled SavvyCal event. This action cannot be undone. Use this when: - A meeting needs to be canceled - A booking should be removed from your calendar Args: - id (string, required): The event ID to cancel — get from savvycal_list_events - response_format ("markdown" | "json"): Output format (default: "markdown") Returns: The updated event with state set to "canceled". ⚠️ This permanently cancels the meeting. The attendee may receive a cancellation notification.. It is categorised as a Destructive tool in the SavvyCal MCP Server 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 savvycal_cancel_event? +

Add a rule in your Intercept YAML policy under the tools section for savvycal_cancel_event. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the SavvyCal MCP Server MCP server.

What risk level is savvycal_cancel_event? +

savvycal_cancel_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 savvycal_cancel_event? +

Yes. Add a rate_limit block to the savvycal_cancel_event rule in your Intercept 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 savvycal_cancel_event completely? +

Set action: deny in the Intercept policy for savvycal_cancel_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 savvycal_cancel_event? +

savvycal_cancel_event is provided by the SavvyCal MCP Server MCP server (arturkoter/savvycal-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on SavvyCal MCP Server

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
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