assign_section · MCP Apple Reminders MCP: Risk & Policy

WHAT IT DOES

What assign_section does on MCP Apple Reminders

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

WHY IT NEEDS A POLICY

Why assign_section needs a policy

The tool name 'assign_section' suggests it modifies reminder organization by assigning items to sections, which is a reversible Write operation. Although the description is empty, the server's documented capability to perform 'update' operations and the sibling tool 'add_section_and_assign' provide strong contextual evidence.

From the tool's definition Tool name 'assign_section' combined with server context that the tool performs 'update' operations on reminders and lists. The server description explicitly lists 'update' as a capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assign_section Rate-limited

assign_section 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": {
    "assign_section": {
      "limits": [
        {
          "counter": "assign_section_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 MCP Apple Reminders, so you can run agents against it safely.

FAQ

Questions about assign_section

What does the assign_section tool do? +

assign_section. It is categorised as a Write tool in the MCP Apple Reminders MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on assign_section? +

Register the MCP Apple Reminders MCP server in PolicyLayer and add a rule for assign_section: 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 MCP Apple Reminders. Nothing to install.

What risk level is assign_section? +

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

Can I rate-limit assign_section? +

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

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

assign_section is provided by the MCP Apple Reminders MCP server (rex/mcp-apple-reminders). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.