list_memory_labels

THE RISK

Low Risk

Why list_memory_labels needs a policy

This tool performs a read-only operation that retrieves and enumerates metadata (labels and their counts) from the Neo4j graph database. It has no side effects, does not modify, delete, or execute operations. The blast radius is minimal—it only exposes the schema structure of stored memories, which aids understanding but poses no data integrity risk.

From the tool's definition Tool name 'list_memory_labels' and description 'List all unique memory labels currently in use with their counts' indicate a retrieval operation that queries existing data without modification.

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

POLICY

How to control list_memory_labels

PolicyLayer is an MCP gateway — it sits between your AI agents and Neo4j Agent Memory MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_memory_labels:

policy.json

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

list_memory_labels 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 Neo4j Agent Memory 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 Neo4j Agent Memory MCP Server tools

Destructive delete_connection Delete a specific connection between two memories Destructive delete_memory Delete a memory and all its connections Write create_connection Create a connection between two memories (it Write create_memory Create a new memory in the knowledge graph (remember to connect it to related memories). C Write update_connection Update properties of an existing connection between memories Write update_memory Update properties of an existing memory Read get_guidance Get help on using the memory tools effectively Read search_memories Search and retrieve memories from the knowledge graph

All 9 Neo4j Agent Memory MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 list_memory_labels

What does the list_memory_labels tool do? +

List all unique memory labels currently in use with their counts. It is categorised as a Read tool in the Neo4j Agent Memory MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_memory_labels? +

Register the Neo4j Agent Memory MCP Server MCP server in PolicyLayer and add a rule for list_memory_labels: 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 Neo4j Agent Memory MCP Server. Nothing to install.

What risk level is list_memory_labels? +

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

Can I rate-limit list_memory_labels? +

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

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

list_memory_labels is provided by the Neo4j Agent Memory MCP Server MCP server (knowall-ai/mcp-neo4j-agent-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Neo4j Agent Memory MCP Server tool call.

Start from Neo4j Agent Memory 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 →