create-memory-stream · mem0 MCP Server MCP: Risk & Policy

WHAT IT DOES

What create-memory-stream does on mem0 MCP Server

AI agents use create-memory-stream to create or update resources in mem0 MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your mem0 MCP Server environment.

WHY IT NEEDS A POLICY

Why create-memory-stream needs a policy

This tool creates new data structures (memory streams) in the Mem0 system, which is a reversible operation. It does not execute arbitrary code, delete data, or move money. While the description is empty, the name and context of sibling tools (append, delete, read, search) clearly indicate this is a data creation/write operation.

From the tool's definition Tool name 'create-memory-stream' and sibling tools like 'append-to-stream', 'delete-stream', 'read-stream' indicate a memory management system. 'create-memory-stream' creates new memory structures/resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-memory-stream Rate-limited

create-memory-stream 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-stream": {
      "limits": [
        {
          "counter": "create-memory-stream_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 mem0 MCP Server, so you can run agents against it safely.

FAQ

Questions about create-memory-stream

What does the create-memory-stream tool do? +

create-memory-stream. It is categorised as a Write tool in the mem0 MCP Server 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-stream? +

Register the mem0 MCP Server MCP server in PolicyLayer and add a rule for create-memory-stream: 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 mem0 MCP Server. Nothing to install.

What risk level is create-memory-stream? +

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

Can I rate-limit create-memory-stream? +

Yes. Add a rate_limit block to the create-memory-stream 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-stream completely? +

Set action: deny in the PolicyLayer policy for create-memory-stream. 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-stream? +

create-memory-stream is provided by the mem0 MCP Server MCP server (sadiuysal/mem0-mcp-server-ts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.