generate_invoice · Moneroo MCP: Risk & Policy

WHAT IT DOES

What generate_invoice does on Moneroo

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

WHY IT NEEDS A POLICY

Why generate_invoice needs a policy

This tool produces a new document (an invoice) that modifies the record state by creating a billable/transactional artifact. While invoices themselves are reversible (can be re-issued or corrected), the act of generating one commits a formal financial record. However, it does not move money or create irreversible financial obligations—only documents a transaction.

From the tool's definition Tool creates/generates a new invoice artifact (HTML document) for a payment transaction. Description: 'Generate a professional HTML invoice for a payment.'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_invoice Rate-limited

generate_invoice 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_invoice": {
      "limits": [
        {
          "counter": "generate_invoice_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Moneroo, so you can run agents against it safely.

FAQ

Questions about generate_invoice

What does the generate_invoice tool do? +

Generate a professional HTML invoice for a payment. It is categorised as a Write tool in the Moneroo 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_invoice? +

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

What risk level is generate_invoice? +

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

Can I rate-limit generate_invoice? +

Yes. Add a rate_limit block to the generate_invoice 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_invoice completely? +

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

generate_invoice is provided by the Moneroo MCP server (moneroo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.