reschedule_appointment · Google Calendar MCP Server MCP

WHAT IT DOES

What reschedule_appointment does on Google Calendar MCP Server

AI agents use reschedule_appointment to create or update resources in Google Calendar MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Calendar MCP Server environment.

WHY IT NEEDS A POLICY

Why reschedule_appointment needs a policy

Rescheduling updates an existing appointment record, which is a reversible write operation (the appointment still exists, just at a new time). It does not delete data or execute code, and has no financial implications. Misuse could cause scheduling confusion or missed appointments, warranting medium severity.

From the tool's definition 'Reschedule an existing appointment' — modifies an existing calendar event by changing its time/date

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reschedule_appointment Rate-limited

reschedule_appointment 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": {
    "reschedule_appointment": {
      "limits": [
        {
          "counter": "reschedule_appointment_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 Google Calendar MCP Server, so you can run agents against it safely.

FAQ

Questions about reschedule_appointment

What does the reschedule_appointment tool do? +

Reschedule an existing appointment. It is categorised as a Write tool in the Google Calendar MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reschedule_appointment? +

Register the Google Calendar MCP Server MCP server in PolicyLayer and add a rule for reschedule_appointment: 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 Google Calendar MCP Server. Nothing to install.

What risk level is reschedule_appointment? +

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

Can I rate-limit reschedule_appointment? +

Yes. Add a rate_limit block to the reschedule_appointment 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 reschedule_appointment completely? +

Set action: deny in the PolicyLayer policy for reschedule_appointment. 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 reschedule_appointment? +

reschedule_appointment is provided by the Google Calendar MCP Server MCP server (roelovanheeren/final-gc-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.