set_reminder · Cn Funds MCP: Risk & Policy

WHAT IT DOES

What set_reminder does on Cn Funds

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

WHY IT NEEDS A POLICY

Why set_reminder needs a policy

An AI agent can call set_reminder faster than any human can review — one bad instruction and it creates or modifies resources in Cn Funds by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_reminder Rate-limited

set_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": {
    "set_reminder": {
      "limits": [
        {
          "counter": "set_reminder_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 Cn Funds, so you can run agents against it safely.

FAQ

Questions about set_reminder

What does the set_reminder tool do? +

设置定时提醒（如每天下午2:30推送持仓收益）。提醒会在每个交易日的指定时间触发。. It is categorised as a Write tool in the Cn Funds MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_reminder? +

Register the Cn Funds MCP server in PolicyLayer and add a rule for set_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 Cn Funds. Nothing to install.

What risk level is set_reminder? +

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

Can I rate-limit set_reminder? +

Yes. Add a rate_limit block to the set_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 set_reminder completely? +

Set action: deny in the PolicyLayer policy for set_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 set_reminder? +

set_reminder is provided by the Cn Funds MCP server (smallke/cn-funds-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.