get_subtree

Get entity and all its descendants as a subgraph

SERVEREnhanced Knowledge Graph Memory Server SOURCEdanielsimonjr/memory-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/danielsimonjr-memory-mcp/get-subtree.md

WHAT IT DOES

What get_subtree does on Enhanced Knowledge Graph Memory Server

AI agents call get_subtree to retrieve information from Enhanced Knowledge Graph Memory Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_subtree is rated Low

This tool retrieves and queries an existing knowledge graph structure without creating, modifying, deleting, or executing any side effects. It performs a hierarchical read operation on stored data, which is characteristic of Read category tools. No reversible or irreversible changes are made to the underlying data store.

From the tool's definition Tool name 'get_subtree' and description 'Get entity and all its descendants as a subgraph' indicate a retrieval operation. The verb 'Get' and the passive framing 'as a subgraph' show data querying with no modification or execution of external operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_subtree safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_subtree, this is the rule to start with:

get_subtree Allowed

get_subtree is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every get_subtree call is checked against it from then on.

FAQ

Questions about get_subtree

What does the get_subtree tool do? +

Get entity and all its descendants as a subgraph. It is categorised as a Read tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_subtree? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for get_subtree: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.

What risk level is get_subtree? +

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

Can I rate-limit get_subtree? +

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

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

get_subtree is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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