book_voucher_payment · Sevdesk MCP: Risk & Policy

WHAT IT DOES

What book_voucher_payment does on Sevdesk

AI agents use book_voucher_payment to commit financial operations through Sevdesk — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why book_voucher_payment needs a policy

Booking a payment commits a financial record in the accounting system, linking a monetary payment to a voucher. This constitutes a financial operation as it records the movement of funds and affects the company's accounting ledger. Misuse could result in incorrect financial records, duplicate payments, or fraudulent entries.

From the tool's definition 'Book a payment on a voucher in sevdesk' — booking a payment is a financial transaction that records money movement against a voucher/document

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

book_voucher_payment Approval-gated

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

View as policy code

policy.json

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

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FAQ

Questions about book_voucher_payment

What does the book_voucher_payment tool do? +

Book a payment on a voucher in sevdesk. It is categorised as a Financial tool in the Sevdesk MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on book_voucher_payment? +

Register the Sevdesk MCP server in PolicyLayer and add a rule for book_voucher_payment: 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 Sevdesk. Nothing to install.

What risk level is book_voucher_payment? +

book_voucher_payment 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 book_voucher_payment? +

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

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

book_voucher_payment is provided by the Sevdesk MCP server (codestra/sevdesk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.