generate_vcard_qr · Enhanced QR Code MCP Server MCP

WHAT IT DOES

What generate_vcard_qr does on Enhanced QR Code MCP Server

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

WHY IT NEEDS A POLICY

Why generate_vcard_qr needs a policy

This tool creates a new QR code image as output based on provided vCard contact data. It is a reversible, read-only generation operation with no side effects beyond producing a file artifact. The blast radius of misuse is minimal—at worst, an agent could generate QR codes with unintended contact information, but this is easily corrected by regeneration and carries no security, financial, or destructive impact.

From the tool's definition Tool name 'generate_vcard_qr' and description 'Generate a QR code containing vCard contact information' indicate creation of a new QR code artifact. vCard is a standard contact data format.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_vcard_qr Rate-limited

generate_vcard_qr 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": {
    "generate_vcard_qr": {
      "limits": [
        {
          "counter": "generate_vcard_qr_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 Enhanced QR Code MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_vcard_qr

What does the generate_vcard_qr tool do? +

Generate a QR code containing vCard contact information. It is categorised as a Write tool in the Enhanced QR Code 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 generate_vcard_qr? +

Register the Enhanced QR Code MCP Server MCP server in PolicyLayer and add a rule for generate_vcard_qr: 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 Enhanced QR Code MCP Server. Nothing to install.

What risk level is generate_vcard_qr? +

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

Can I rate-limit generate_vcard_qr? +

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

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

generate_vcard_qr is provided by the Enhanced QR Code MCP Server MCP server (myownipgit/mcp-server-qrcode-enhanced). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.