Get all reminder lists (calendars)
AI agents call get_all_lists to retrieve information from Apple Reminders MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and returns data about existing reminder lists without any side effects. It does not create, modify, delete, or execute any actions. It is a straightforward read-only operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name is 'get_all_lists' and description states 'Get all reminder lists (calendars)' — purely a retrieval operation with no modification, deletion, or execution.
Attacks that exploit this kind of access
Get all reminder lists (calendars). It is categorised as a Read tool in the Apple Reminders MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Apple Reminders MCP Server MCP server in PolicyLayer and add a rule for get_all_lists: 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 Apple Reminders MCP Server. Nothing to install.
get_all_lists is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_all_lists 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 get_all_lists. 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.
get_all_lists is provided by the Apple Reminders MCP Server MCP server (krishna-desiraju/apple-reminders-swift-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →