svg_save · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What svg_save does on SVG Canvas MCP

AI agents use svg_save 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 svg_save needs a policy

This tool writes SVG graphic data to a file, which is a reversible operation (files can be overwritten or deleted). It does not execute arbitrary code, delete data irreversibly, move money, or have destructive side effects. The blast radius is minimal—worst case, an unwanted SVG file is created, which is easily remediated. This is a straightforward Write operation.

From the tool's definition Tool description translates to 'Save the current canvas as an SVG file.' The verb 'save' indicates creation or modification of a file on the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

svg_save Rate-limited

svg_save 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": {
    "svg_save": {
      "limits": [
        {
          "counter": "svg_save_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 svg_save

What does the svg_save tool do? +

현재 캔버스를 SVG 파일로 저장합니다. 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 svg_save? +

Register the SVG Canvas MCP server in PolicyLayer and add a rule for svg_save: 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 svg_save? +

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

Can I rate-limit svg_save? +

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

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

svg_save 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.