xmemo_memory_update · Openclaw Memory MCP: Risk & Policy

WHAT IT DOES

What xmemo_memory_update does on Openclaw Memory

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

WHY IT NEEDS A POLICY

Why xmemo_memory_update needs a policy

This tool modifies existing memory records in a cloud storage system. It is a write operation (not read-only, not destructive, not executing arbitrary code). The severity is medium because unauthorized updates to long-term memory and audit records could corrupt agent state, decision history, or compliance data, but the impact is typically reversible through audit logs or subsequent corrections.

From the tool's definition Tool description states 'Update an existing XMemo memory by id. Only the provided fields are changed.' The verb 'update' and the mechanism of modifying existing data indicate a write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

xmemo_memory_update Rate-limited

xmemo_memory_update 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": {
    "xmemo_memory_update": {
      "limits": [
        {
          "counter": "xmemo_memory_update_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 Openclaw Memory, so you can run agents against it safely.

FAQ

Questions about xmemo_memory_update

What does the xmemo_memory_update tool do? +

Update an existing XMemo memory by id. Only the provided fields are changed. It is categorised as a Write tool in the Openclaw 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 xmemo_memory_update? +

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

What risk level is xmemo_memory_update? +

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

Can I rate-limit xmemo_memory_update? +

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

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

xmemo_memory_update is provided by the Openclaw Memory MCP server (@xmemo/openclaw-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.