manage_namespaces · Memory Bridge MCP: Risk & Policy

WHAT IT DOES

What manage_namespaces does on Memory Bridge

AI agents use manage_namespaces 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 manage_namespaces needs a policy

Although the description is empty, the tool name 'manage_namespaces' in the context of a memory-sharing system suggests operations that create, modify, or organize namespace structures—reversible Write actions rather than destructive deletions. This poses medium risk if an agent misconfigures or overwrites namespace hierarchies, but is not irreversible at the data level like Destructive operations.

From the tool's definition Tool name 'manage_namespaces' and its position alongside memory management tools (get_memory_health, list_shared_memories, promote_memory, search_memories, sync_memory) indicate it operates on shared memory structure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage_namespaces Rate-limited

manage_namespaces 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": {
    "manage_namespaces": {
      "limits": [
        {
          "counter": "manage_namespaces_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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 manage_namespaces

What does the manage_namespaces tool do? +

manage_namespaces. 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 manage_namespaces? +

Register the Memory Bridge MCP server in PolicyLayer and add a rule for manage_namespaces: 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 manage_namespaces? +

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

Can I rate-limit manage_namespaces? +

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

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

manage_namespaces 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.