mem0_get_memory_by_id

THE RISK

Low Risk

Why mem0_get_memory_by_id needs a policy

This tool retrieves data from the Mem0 memory system based on an ID parameter. The action is purely informational—it queries and returns stored memory without creating, modifying, deleting, or executing anything. This is a classic Read operation with minimal security risk.

From the tool's definition Tool name 'mem0_get_memory_by_id' and description 'Gets a specific memory from Mem0 by its ID' indicate a retrieval operation with no side effects.

Documented attack patterns abuse exactly the kind of access mem0_get_memory_by_id gives an agent:

POLICY

How to control mem0_get_memory_by_id

PolicyLayer is an MCP gateway — it sits between your AI agents and Mem0 MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for mem0_get_memory_by_id:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mem0_get_memory_by_id": {}
  }
}

mem0_get_memory_by_id is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mem0 MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mem0 MCP Server tools

Destructive mem0_delete_memory Deletes a specific memory from Mem0 by its ID. Write mem0_add_episodic_memory mem0_add_episodic_memory Write mem0_add_memory mem0_add_memory Write mem0_add_memory_direct mem0_add_memory_direct Write mem0_add_memory_selective mem0_add_memory_selective Write mem0_add_procedural_memory mem0_add_procedural_memory Write mem0_add_semantic_memory mem0_add_semantic_memory Write mem0_add_short_term_memory mem0_add_short_term_memory

All 18 Mem0 MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about mem0_get_memory_by_id

What does the mem0_get_memory_by_id tool do? +

Gets a specific memory from Mem0 by its ID. It is categorised as a Read tool in the Mem0 MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mem0_get_memory_by_id? +

Register the Mem0 MCP Server MCP server in PolicyLayer and add a rule for mem0_get_memory_by_id: 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 mem0_get_memory_by_id? +

mem0_get_memory_by_id is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit mem0_get_memory_by_id? +

Yes. Add a rate_limit block to the mem0_get_memory_by_id 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 mem0_get_memory_by_id completely? +

Set action: deny in the PolicyLayer policy for mem0_get_memory_by_id. 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 mem0_get_memory_by_id? +

mem0_get_memory_by_id is provided by the Mem0 MCP Server MCP server (ryaker/mcp-mem0-general). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mem0 MCP Server tool call.

Start from Mem0 MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →