一次性检查所有到期的提醒（闹钟和待办事项）
AI agents call check_all_reminders to retrieve information from MCP Reminder without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns the state of reminders and alarms without modifying, deleting, or executing actions. It is a read-only operation that retrieves existing data for display or processing by the AI assistant. No side effects are produced by calling this tool itself.
From the tool's definition Tool description translates to 'check all due reminders (alarms and todos) at once'. The verb 'check' and 'get/retrieve pending' operations indicate data retrieval with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
一次性检查所有到期的提醒（闹钟和待办事项）. It is categorised as a Read tool in the MCP Reminder MCP Server, which means it retrieves data without modifying state.
Register the MCP Reminder MCP server in PolicyLayer and add a rule for check_all_reminders: 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 Reminder. Nothing to install.
check_all_reminders 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 check_all_reminders 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 check_all_reminders. 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.
check_all_reminders is provided by the MCP Reminder MCP server (sheacoding/mcp-reminder). 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.
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