layer_visibility · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What layer_visibility does on SVG Canvas MCP

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

WHY IT NEEDS A POLICY

Why layer_visibility needs a policy

This tool creates or modifies data reversibly by toggling layer visibility states in an SVG document. The change is non-destructive and can be easily undone by toggling visibility back. It does not delete data, execute arbitrary code, or cause financial impact. It fits the Write category as a reversible modification operation.

From the tool's definition Tool name 'layer_visibility' and description indicating it 'sets the display/hide state of layers' (설정합니다 = sets/configures). This modifies the visibility property of SVG layer elements.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

layer_visibility Rate-limited

layer_visibility 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": {
    "layer_visibility": {
      "limits": [
        {
          "counter": "layer_visibility_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 SVG Canvas MCP, so you can run agents against it safely.

FAQ

Questions about layer_visibility

What does the layer_visibility tool do? +

레이어의 표시/숨김 상태를 설정합니다. It is categorised as a Write tool in the SVG Canvas MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on layer_visibility? +

Register the SVG Canvas MCP server in PolicyLayer and add a rule for layer_visibility: 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 SVG Canvas MCP. Nothing to install.

What risk level is layer_visibility? +

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

Can I rate-limit layer_visibility? +

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

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

layer_visibility is provided by the SVG Canvas MCP server (kim62210/svg-canvas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.