list_component_variants

THE RISK

Low Risk

Why list_component_variants needs a policy

This tool retrieves and presents information about existing Figma design components without modifying, executing, or deleting anything. It is purely informational and supports the analysis phase of design-to-code conversion. The blast radius of misuse is minimal—worst case, an agent retrieves a list of variant names it didn't need.

From the tool's definition The tool 'list_component_variants' is described as listing variants in a Figma component set. The verb 'list' and the action of retrieving/enumerating component variants constitutes a read-only query with no side effects.

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

POLICY

How to control list_component_variants

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

policy.json

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

list_component_variants 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 to Flutter 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 to Flutter MCP Server tools

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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 list_component_variants

What does the list_component_variants tool do? +

List all variants in a Figma component set to help with variant selection. It is categorised as a Read tool in the Figma to Flutter MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_component_variants? +

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

What risk level is list_component_variants? +

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

Can I rate-limit list_component_variants? +

Yes. Add a rate_limit block to the list_component_variants 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_component_variants completely? +

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

list_component_variants is provided by the Figma to Flutter MCP Server MCP server (mhmzdev/figma-flutter-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 to Flutter MCP Server tool call.

Start from Figma to Flutter 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 →