update_reminder

SERVERAirMCP SOURCEairmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/heznpc-airmcp/update-reminder.md

WHAT IT DOES

What update_reminder does on AirMCP

AI agents use update_reminder to create or update resources in AirMCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AirMCP environment.

RISK

Why update_reminder is rated Medium

This tool modifies existing reminders in Apple Reminders reversibly — fields can be changed or cleared. It does not delete data (would be Destructive), does not execute arbitrary code (would be Execute), and does not move money (would be Financial).

From the tool's definition Tool description explicitly states 'a write to user data' and allows updating fields of existing reminders (dueDate, etc.). Name 'update_reminder' confirms modification of existing data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_reminder safely

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

update_reminder Rate-limited

update_reminder 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": {
    "update_reminder": {
      "limits": [
        {
          "counter": "update_reminder_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about update_reminder

What does the update_reminder tool do? +

Update fields of an existing reminder in Apple Reminders — a write to user data; only the fields you pass change. Set dueDate to null to clear it. Recurrence rules cannot be modified via automation. It is categorised as a Write tool in the AirMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_reminder? +

Register the Air MCP server in PolicyLayer and add a rule for update_reminder: 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 AirMCP. Nothing to install.

What risk level is update_reminder? +

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

Can I rate-limit update_reminder? +

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

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

update_reminder is provided by the Air MCP server (airmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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