style_pattern · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What style_pattern does on SVG Canvas MCP

AI agents use style_pattern 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 style_pattern needs a policy

The tool creates or defines SVG patterns, which is a reversible modification of graphic data within the SVG canvas. It does not delete data (not Destructive), execute arbitrary code (not Execute), trigger financial transactions (not Financial), or merely retrieve data (not Read). Pattern definition is a creative/write operation typical of graphics manipulation tools.

From the tool's definition Tool name 'style_pattern' and description '패턴을 정의합니다' (defines a pattern) indicate creation or modification of SVG style patterns. This is a write operation that creates/modifies graphic styling data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

style_pattern Rate-limited

style_pattern 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": {
    "style_pattern": {
      "limits": [
        {
          "counter": "style_pattern_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 style_pattern

What does the style_pattern tool do? +

패턴을 정의합니다. 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 style_pattern? +

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

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

Can I rate-limit style_pattern? +

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

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

style_pattern 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.