draw_heart · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What draw_heart does on SVG Canvas MCP

AI agents use draw_heart 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 draw_heart needs a policy

This tool creates new SVG graphic elements (a heart shape) without permanent side effects. It is reversible and modifies the canvas state, fitting the 'Write' category. The severity is low because misuse would only create unwanted graphics that can be easily undone or deleted, with no data loss, external system impact, or financial consequences.

From the tool's definition Tool name 'draw_heart' and context indicates it creates/renders SVG graphics. The description in Korean translates to 'draws a heart shape', which is a graphics creation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

draw_heart Rate-limited

draw_heart 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": {
    "draw_heart": {
      "limits": [
        {
          "counter": "draw_heart_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 draw_heart

What does the draw_heart tool do? +

하트 모양을 그립니다. 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 draw_heart? +

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

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

Can I rate-limit draw_heart? +

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

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

draw_heart 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.