send_invoice_email · Sevdesk MCP: Risk & Policy

WHAT IT DOES

What send_invoice_email does on Sevdesk

AI agents invoke send_invoice_email to trigger actions in Sevdesk. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why send_invoice_email needs a policy

This tool triggers an external operation — sending an email — which has immediate real-world effects (delivering a financial document to a recipient). It cannot be trivially undone once sent. While it doesn't move money directly, it dispatches a formal invoice to a customer, which creates a payment obligation.

From the tool's definition Send an invoice via email from sevdesk

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_invoice_email Rate-limited

send_invoice_email stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "send_invoice_email": {
      "limits": [
        {
          "counter": "send_invoice_email_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about send_invoice_email

What does the send_invoice_email tool do? +

Send an invoice via email from sevdesk. It is categorised as a Execute tool in the Sevdesk MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on send_invoice_email? +

Register the Sevdesk MCP server in PolicyLayer and add a rule for send_invoice_email: 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 send_invoice_email? +

send_invoice_email is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit send_invoice_email? +

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

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

send_invoice_email 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.