memento_configure_notifications · Memento MCP: Risk & Policy

WHAT IT DOES

What memento_configure_notifications does on Memento

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

WHY IT NEEDS A POLICY

Why memento_configure_notifications needs a policy

This tool creates or modifies notification configuration settings (enable/disable toggles, topic selections, threshold parameters). These are reversible changes to system state without side effects beyond the notification system itself. It does not delete data (not Destructive), execute arbitrary code (not Execute), or move money (not Financial).

From the tool's definition Tool description states 'Configure notification settings — enable/disable, set topics, set confidence threshold.' The configure/set actions modify system settings reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

memento_configure_notifications Rate-limited

memento_configure_notifications 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": {
    "memento_configure_notifications": {
      "limits": [
        {
          "counter": "memento_configure_notifications_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 Memento, so you can run agents against it safely.

FAQ

Questions about memento_configure_notifications

What does the memento_configure_notifications tool do? +

[DEPRECATED] Configure notification settings — enable/disable, set topics, set confidence threshold. It is categorised as a Write tool in the Memento MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memento_configure_notifications? +

Register the Memento MCP server in PolicyLayer and add a rule for memento_configure_notifications: 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 Memento. Nothing to install.

What risk level is memento_configure_notifications? +

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

Can I rate-limit memento_configure_notifications? +

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

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

memento_configure_notifications is provided by the Memento MCP server (joyciakira/memento). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.