apple_reminders_action
Use the local Apple Reminders app on macOS to list and manage reminders.
This record as markdown: /tools/cowork-os/apple-reminders-action.md
What apple_reminders_action does on CoWork OS
AI agents use apple_reminders_action to create or update resources in CoWork OS, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CoWork OS environment.
Why apple_reminders_action is rated Medium
The tool primarily performs write operations on reminder data (create, update, delete reminders). While listing is a read operation, the emphasis on 'manage' indicates modification capabilities. This is reversible (reminders can be recreated), so it falls under Write rather than Destructive.
From the tool's definition Tool description states it is used to "list and manage reminders" on the Apple Reminders app. 'Manage' implies create, update, complete, or modify reminders, which are reversible write operations.
Attacks that exploit this kind of access
The rule that runs apple_reminders_action safely
PolicyLayer is an MCP gateway: it sits between your AI agents and CoWork OS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For apple_reminders_action, this is the rule to start with:
apple_reminders_action 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.
The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every apple_reminders_action call is checked against it from then on.
Questions about apple_reminders_action
Use the local Apple Reminders app on macOS to list and manage reminders. It is categorised as a Write tool in the CoWork OS MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the CoWork OS MCP server in PolicyLayer and add a rule for apple_reminders_action: 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 CoWork OS. Nothing to install.
apple_reminders_action is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the apple_reminders_action 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.
Set action: deny in the PolicyLayer policy for apple_reminders_action. 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.
apple_reminders_action is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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