memory_ratify · Loom MCP: Risk & Policy

WHAT IT DOES

What memory_ratify does on Loom

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

WHY IT NEEDS A POLICY

Why memory_ratify needs a policy

This tool creates or commits memory entries (Write category). It appears to transition proposed/pending memory states into confirmed/real memory, which is a data modification operation. Severity is medium rather than high because the blast radius is limited to an agent's own memory/identity context rather than shared systems.

From the tool's definition Tool name 'memory_ratify' combined with verb 'Ratify a pending proposal into a REAL memory' indicates the tool modifies or finalizes memory state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

memory_ratify Rate-limited

memory_ratify 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_ratify": {
      "limits": [
        {
          "counter": "memory_ratify_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 Loom, so you can run agents against it safely.

FAQ

Questions about memory_ratify

What does the memory_ratify tool do? +

Ratify a pending proposal into a REAL memory. Loads the proposal, applies any. It is categorised as a Write tool in the Loom 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_ratify? +

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

What risk level is memory_ratify? +

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

Can I rate-limit memory_ratify? +

Yes. Add a rate_limit block to the memory_ratify 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_ratify completely? +

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

memory_ratify is provided by the Loom MCP server (jbarket/loom). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.