qrcode_batch · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What qrcode_batch does on SVG Canvas MCP

AI agents use qrcode_batch 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 qrcode_batch needs a policy

Batch QR code generation is a content creation operation. The tool produces new graphical assets (QR codes) which are reversible outputs. This fits the Write category as it generates/creates new data, though with minimal impact. Severity is low since QR code generation alone has limited blast radius—the harm depends entirely on how the codes are used externally, which is outside the tool's scope.

From the tool's definition Tool creates multiple QR codes ("여러 QR 코드를 한 번에 생성합니다" = "Generate multiple QR codes at once"). QR code generation is data creation/synthesis that produces new output artifacts without side effects, modifications to existing data, code execution, deletion, or…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

qrcode_batch Rate-limited

qrcode_batch 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": {
    "qrcode_batch": {
      "limits": [
        {
          "counter": "qrcode_batch_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 qrcode_batch

What does the qrcode_batch tool do? +

여러 QR 코드를 한 번에 생성합니다. 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 qrcode_batch? +

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

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

Can I rate-limit qrcode_batch? +

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

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

qrcode_batch 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.