memory_update_status · Munin Memory MCP: Risk & Policy

WHAT IT DOES

What memory_update_status does on Munin Memory

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

WHY IT NEEDS A POLICY

Why memory_update_status needs a policy

This tool creates or modifies data (status entries) in a controlled, self-hosted database. It is reversible (unlike Destructive) and does not execute external code (unlike Execute). The medium severity reflects that misuse could corrupt or pollute persistent memory state across sessions, affecting agent behavior, but the impact is typically recoverable since SQLite supports standard CRUD patterns and backups.

From the tool's definition Tool name 'memory_update_status' and description indicate modification of tracked status entries in a persistent SQLite database. The 'update' verb and context of modifying stored memory state constitute a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

memory_update_status Rate-limited

memory_update_status 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": {
    "memory_update_status": {
      "limits": [
        {
          "counter": "memory_update_status_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 Munin Memory, so you can run agents against it safely.

FAQ

Questions about memory_update_status

What does the memory_update_status tool do? +

Update a tracked status entry in. It is categorised as a Write tool in the Munin Memory MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memory_update_status? +

Register the Munin Memory MCP server in PolicyLayer and add a rule for memory_update_status: 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 Munin Memory. Nothing to install.

What risk level is memory_update_status? +

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

Can I rate-limit memory_update_status? +

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

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

memory_update_status is provided by the Munin Memory MCP server (magnus-gille/munin-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.