sync_memory · Memory Bridge MCP: Risk & Policy

WHAT IT DOES

What sync_memory does on Memory Bridge

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

WHY IT NEEDS A POLICY

Why sync_memory needs a policy

The name 'sync_memory' strongly implies synchronizing memory data between projects or namespaces, which is a write/update operation (creating or modifying shared memory entries). Given the server's purpose of cross-project memory sharing, sync likely propagates or updates memory records. However, the empty description significantly lowers confidence.

From the tool's definition Tool name 'sync_memory' on a memory-sharing server alongside tools like 'promote_memory', 'list_shared_memories', and 'manage_namespaces'. Description is empty.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sync_memory Rate-limited

sync_memory 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": {
    "sync_memory": {
      "limits": [
        {
          "counter": "sync_memory_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 Memory Bridge, so you can run agents against it safely.

FAQ

Questions about sync_memory

What does the sync_memory tool do? +

sync_memory. It is categorised as a Write tool in the Memory Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sync_memory? +

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

What risk level is sync_memory? +

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

Can I rate-limit sync_memory? +

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

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

sync_memory is provided by the Memory Bridge MCP server (lewenw/claude-memory-bridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.