create_circle · Figma MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_circle does on Figma MCP Server

AI agents use create_circle to create or update resources in Figma MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Figma MCP Server environment.

WHY IT NEEDS A POLICY

Why create_circle needs a policy

Creating a circle in Figma modifies the document by adding a new design element, which is a reversible operation (the element can be deleted). This fits the Write category - it creates/modifies data without being irreversible. Severity is medium because modifying design documents could impact collaborative work, though the effect is easily undoable.

From the tool's definition Tool name 'create_circle' combined with sibling tools like 'create_arc', 'create_frame_in_figma', 'create_rectangle', 'create_line', 'create_polygon', and 'create_page' all follow a pattern of creating/adding design elements in Figma.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_circle Rate-limited

create_circle stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_circle": {
      "limits": [
        {
          "counter": "create_circle_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Figma MCP Server, so you can run agents against it safely.

FAQ

Questions about create_circle

What does the create_circle tool do? +

create_circle. It is categorised as a Write tool in the Figma MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_circle? +

Register the Figma MCP Server MCP server in PolicyLayer and add a rule for create_circle: 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 create_circle? +

create_circle is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_circle? +

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

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

create_circle is provided by the Figma MCP Server MCP server (sichang824/mcp-figma). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.