create-event · Universal Mcp Toolkit MCP: Risk & Policy

WHAT IT DOES

What create-event does on Universal Mcp Toolkit

AI agents use create-event to create or update resources in Universal Mcp Toolkit — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Universal Mcp Toolkit environment.

WHY IT NEEDS A POLICY

Why create-event needs a policy

This tool creates (write) calendar data reversibly. It does not execute arbitrary code, delete data, or move money. The severity is medium because misuse could schedule unwanted meetings, spam attendees, or trigger calendar-dependent workflows, but the impact is limited to calendar state and can be undone by deletion.

From the tool's definition Tool description states 'Create a Google Calendar event' — a create operation that modifies calendar state by adding a new event with attendees, notes, and timing.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-event Rate-limited

create-event stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create-event": {
      "limits": [
        {
          "counter": "create-event_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Universal Mcp Toolkit, so you can run agents against it safely.

FAQ

Questions about create-event

What does the create-event tool do? +

Create a Google Calendar event with attendees, notes, and timing. It is categorised as a Write tool in the Universal Mcp Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-event? +

Register the Universal Mcp Toolkit MCP server in PolicyLayer and add a rule for create-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 Universal Mcp Toolkit. Nothing to install.

What risk level is create-event? +

create-event is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create-event? +

Yes. Add a rate_limit block to the create-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 create-event completely? +

Set action: deny in the PolicyLayer policy for create-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 create-event? +

create-event is provided by the Universal Mcp Toolkit MCP server (markgatcha/universal-mcp-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.