set_qrcode_logo · QR Forge MCP server MCP: Risk & Policy

WHAT IT DOES

What set_qrcode_logo does on QR Forge MCP server

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

WHY IT NEEDS A POLICY

Why set_qrcode_logo needs a policy

This tool creates or modifies data reversibly by updating a QR code's logo property. It does not delete data (which would be Destructive), execute arbitrary code (Execute), move money (Financial), or merely read data (Read). The modification is reversible—a logo can be replaced or removed.

From the tool's definition Tool description states 'Set/replace a QR code's center logo', which are reversible modification operations. The action modifies existing QR code metadata (logo image) without deleting the QR code itself or causing irreversible damage.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_qrcode_logo Rate-limited

set_qrcode_logo 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": {
    "set_qrcode_logo": {
      "limits": [
        {
          "counter": "set_qrcode_logo_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 QR Forge MCP server, so you can run agents against it safely.

FAQ

Questions about set_qrcode_logo

What does the set_qrcode_logo tool do? +

Set/replace a QR code's center logo (PNG, JPG, or WebP). It is categorised as a Write tool in the QR Forge MCP server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_qrcode_logo? +

Register the QR Forge MCP server MCP server in PolicyLayer and add a rule for set_qrcode_logo: 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 QR Forge MCP server. Nothing to install.

What risk level is set_qrcode_logo? +

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

Can I rate-limit set_qrcode_logo? +

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

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

set_qrcode_logo is provided by the QR Forge MCP server MCP server (jkolarov/qrforge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.