memento_migrate_workspace_memories

WHAT IT DOES

What memento_migrate_workspace_memories does on Memento

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

WHY IT NEEDS A POLICY

Why memento_migrate_workspace_memories needs a policy

This tool creates and modifies data by copying memories across databases (source to per-workspace destinations), which constitutes a Write operation. Severity is medium because the operation is described as 'copy-only' (reversible), but impacts persistent memory storage across multiple workspaces, potentially affecting AI agent behavior and state.

From the tool's definition Tool performs 'Copy-only migration: redistribute memories from a source DB into per-workspace DBs' and 'Produces a JSON report'. The verb 'redistribute' and 'copy' indicate data modification and creation into destination databases.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

memento_migrate_workspace_memories Rate-limited

memento_migrate_workspace_memories 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": {
    "memento_migrate_workspace_memories": {
      "limits": [
        {
          "counter": "memento_migrate_workspace_memories_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 Memento, so you can run agents against it safely.

FAQ

Questions about memento_migrate_workspace_memories

What does the memento_migrate_workspace_memories tool do? +

Copy-only migration: redistribute memories from a source DB into per-workspace DBs using deterministic text heuristics. Produces a JSON report. It is categorised as a Write tool in the Memento MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memento_migrate_workspace_memories? +

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

What risk level is memento_migrate_workspace_memories? +

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

Can I rate-limit memento_migrate_workspace_memories? +

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

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

memento_migrate_workspace_memories is provided by the Memento MCP server (joyciakira/memento). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.