get_node_children

THE RISK

Low Risk

Why get_node_children needs a policy

This tool queries and retrieves hierarchical node structure data from Figma designs without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an AI agent could only over-retrieve or map design structures, posing no financial, destructive, or execution risks.

From the tool's definition Tool description states 'Get all children node IDs from a specified node' — a retrieval operation with no modification, deletion, or execution capability.

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

POLICY

How to control get_node_children

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

policy.json

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

get_node_children 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 Figma 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 Figma MCP Server tools

Read get_annotations get_annotations Read get_document_info Get detailed information about the current Figma document. Read get_instance_overrides Get instance overrides for a component instance. Read get_local_components Get all local components from the current Figma document. Read get_node_info Get detailed information about a specific node in Figma. Read get_nodes_info Get detailed information about multiple nodes in Figma. Read get_reactions Get reactions (prototyping interactions) for nodes. Read get_selection Get information about the current selection in Figma.

All 15 Figma 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 get_node_children

What does the get_node_children tool do? +

Get all children node IDs from a specified node, including all nested levels. It is categorised as a Read tool in the Figma MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_node_children? +

Register the Figma MCP Server MCP server in PolicyLayer and add a rule for get_node_children: 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 Figma MCP Server. Nothing to install.

What risk level is get_node_children? +

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

Can I rate-limit get_node_children? +

Yes. Add a rate_limit block to the get_node_children 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_node_children completely? +

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

get_node_children is provided by the Figma MCP Server MCP server (kdoronin/figma_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Figma MCP Server tool call.

Start from Figma 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 →