create_memory_session · Memory Bank MCP: Risk & Policy

WHAT IT DOES

What create_memory_session does on Memory Bank MCP

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

WHY IT NEEDS A POLICY

Why create_memory_session needs a policy

An AI agent can call create_memory_session faster than any human can review — one bad instruction and it creates or modifies resources in Memory Bank MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_memory_session Rate-limited

create_memory_session 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": {
    "create_memory_session": {
      "limits": [
        {
          "counter": "create_memory_session_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 Bank MCP, so you can run agents against it safely.

FAQ

Questions about create_memory_session

What does the create_memory_session tool do? +

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

How do I enforce a policy on create_memory_session? +

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

What risk level is create_memory_session? +

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

Can I rate-limit create_memory_session? +

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

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

create_memory_session is provided by the Memory Bank MCP server (spideynolove/memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.