generate_dynamic_qrcode

THE RISK

Critical Risk

Why generate_dynamic_qrcode needs a policy

This tool generates a payment QR code with a fixed amount, directly initiating a financial transaction flow via PicPay Pay. Creating a payment request commits a financial obligation and enables money movement, placing it firmly in the Financial category. Misuse could result in unauthorized payment requests being sent to users.

From the tool's definition Generate a dynamic PicPay Pay QR code with a fixed amount and optional expiration... Returns qrcode content + base64 image and a paymentUrl

Documented attack patterns abuse exactly the kind of access generate_dynamic_qrcode gives an agent:

POLICY

How to control generate_dynamic_qrcode

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_dynamic_qrcode:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_dynamic_qrcode": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to generate_dynamic_qrcode is blocked until a human approves it. The rest of the server keeps working.

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Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

Critical-risk tools in Mcp Afip → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about generate_dynamic_qrcode

What does the generate_dynamic_qrcode tool do? +

Generate a dynamic PicPay Pay QR code with a fixed amount and optional expiration. Each QR is single-purpose. Returns qrcode content + base64 image and a paymentUrl. It is categorised as a Financial tool in the Mcp Afip MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on generate_dynamic_qrcode? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for generate_dynamic_qrcode: 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 Mcp Afip. Nothing to install.

What risk level is generate_dynamic_qrcode? +

generate_dynamic_qrcode is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit generate_dynamic_qrcode? +

Yes. Add a rate_limit block to the generate_dynamic_qrcode 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_dynamic_qrcode completely? +

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

generate_dynamic_qrcode is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

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