invoice_sales_order

THE RISK

Critical Risk

Why invoice_sales_order needs a policy

Generating a fiscal invoice (Nota Fiscal) from a sales order is a financial operation that creates a legally binding billing document, committing a financial obligation between parties. This cannot be trivially undone once issued, making it both Financial and potentially Destructive in nature. Financial takes precedence per the severity hierarchy.

From the tool's definition Generate an invoice (NF) from an existing sales order

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

POLICY

How to control invoice_sales_order

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for invoice_sales_order:

policy.json

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

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

Create a free account and register Mcp Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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All 1300 Mcp Ap2 tools →

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Go deeper

Critical-risk tools in Mcp Ap2 → 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 invoice_sales_order

What does the invoice_sales_order tool do? +

Generate an invoice (NF) from an existing sales order in Omie ERP. It is categorised as a Financial tool in the Mcp Ap2 MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on invoice_sales_order? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for invoice_sales_order: 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 Ap2. Nothing to install.

What risk level is invoice_sales_order? +

invoice_sales_order 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 invoice_sales_order? +

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

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

invoice_sales_order is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →