remember_fact · Memoraeu MCP: Risk & Policy

WHAT IT DOES

What remember_fact does on Memoraeu

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

WHY IT NEEDS A POLICY

Why remember_fact needs a policy

This tool writes a structured fact to persistent memory with a time-validity component. It creates new data rather than modifying or deleting existing data, making it a Write operation. Severity is medium because it persists information in a zero-knowledge memory layer, potentially storing sensitive data that could be retrieved later by other tools.

From the tool's definition "Mémorise un fait structuré" (Memorizes a structured fact) with temporal validity — creates/stores new data persistently

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

remember_fact Rate-limited

remember_fact 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": {
    "remember_fact": {
      "limits": [
        {
          "counter": "remember_fact_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 Memoraeu, so you can run agents against it safely.

FAQ

Questions about remember_fact

What does the remember_fact tool do? +

Mémorise un fait structuré avec validité temporelle. It is categorised as a Write tool in the Memoraeu MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on remember_fact? +

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

What risk level is remember_fact? +

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

Can I rate-limit remember_fact? +

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

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

remember_fact is provided by the Memoraeu MCP server (pquattro/memoraeu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.