create_frame · MCP Figma MCP: Risk & Policy

WHAT IT DOES

What create_frame does on MCP Figma

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

WHY IT NEEDS A POLICY

Why create_frame needs a policy

Creating a frame is a reversible write operation—it adds new design elements to a Figma document that can be deleted or modified. It does not execute arbitrary code, delete data irreversibly, or move money. The blast radius is medium because unwanted frame creation could clutter designs or require cleanup, but changes are easily undone via Figma's undo functionality or manual deletion.

From the tool's definition Tool creates a new frame in Figma, a design element that does not exist prior to invocation. Described as part of capabilities supporting 'element creation' in the server description.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_frame Rate-limited

create_frame 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_frame": {
      "limits": [
        {
          "counter": "create_frame_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 MCP Figma, so you can run agents against it safely.

FAQ

Questions about create_frame

What does the create_frame tool do? +

Create a new frame in Figma. It is categorised as a Write tool in the MCP Figma 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_frame? +

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

What risk level is create_frame? +

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

Can I rate-limit create_frame? +

Yes. Add a rate_limit block to the create_frame 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_frame completely? +

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

create_frame is provided by the MCP Figma MCP server (yelowflash09/figma_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.