figma_create_frame · MC Figma Bridge MCP: Risk & Policy

WHAT IT DOES

What figma_create_frame does on MC Figma Bridge

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

WHY IT NEEDS A POLICY

Why figma_create_frame needs a policy

This tool creates new content (a frame) in a reversible manner. Frames can be deleted or modified afterwards, making this a Write operation rather than Destructive. The blast radius is medium because an agent could clutter a document or create unwanted design elements, but changes are non-permanent and can be undone.

From the tool's definition Tool name 'figma_create_frame' and description 'Create a frame on the active Figma page and select it' explicitly indicates creation of new design elements within a Figma document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

figma_create_frame Rate-limited

figma_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": {
    "figma_create_frame": {
      "limits": [
        {
          "counter": "figma_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 MC Figma Bridge, so you can run agents against it safely.

FAQ

Questions about figma_create_frame

What does the figma_create_frame tool do? +

Create a frame on the active Figma page and select it. It is categorised as a Write tool in the MC Figma Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on figma_create_frame? +

Register the MC Figma Bridge MCP server in PolicyLayer and add a rule for figma_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 MC Figma Bridge. Nothing to install.

What risk level is figma_create_frame? +

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

Can I rate-limit figma_create_frame? +

Yes. Add a rate_limit block to the figma_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 figma_create_frame completely? +

Set action: deny in the PolicyLayer policy for figma_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 figma_create_frame? +

figma_create_frame is provided by the MC Figma Bridge MCP server (mochammad123/mcp-figma). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.