generate_atomic_facts · memro MCP Server MCP: Risk & Policy

WHAT IT DOES

What generate_atomic_facts does on memro MCP Server

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

WHY IT NEEDS A POLICY

Why generate_atomic_facts needs a policy

This tool writes or creates new data (atomic facts) in the memory store through transformation of input narratives. It is reversible (facts can be deleted via delete_memory), does not execute arbitrary code, and has no destructive or financial implications. The blast radius of misuse is limited—an agent could fill memory with spurious facts, but this is recoverable and would not directly harm external systems.

From the tool's definition The tool description states it breaks narratives 'into atomic facts for better searchability', indicating it transforms and stores processed data. The context of a 'memro MCP Server' for 'storage and retrieval' suggests this tool creates new memory records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_atomic_facts Rate-limited

generate_atomic_facts 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": {
    "generate_atomic_facts": {
      "limits": [
        {
          "counter": "generate_atomic_facts_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 memro MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_atomic_facts

What does the generate_atomic_facts tool do? +

Break a longer narrative into atomic facts for better searchability. It is categorised as a Write tool in the memro MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_atomic_facts? +

Register the memro MCP Server MCP server in PolicyLayer and add a rule for generate_atomic_facts: 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 memro MCP Server. Nothing to install.

What risk level is generate_atomic_facts? +

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

Can I rate-limit generate_atomic_facts? +

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

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

generate_atomic_facts is provided by the memro MCP Server MCP server (memrohq/memro-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.