siigo_send_invoice_email · Siigo MCP Server MCP

WHAT IT DOES

What siigo_send_invoice_email does on Siigo MCP Server

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

WHY IT NEEDS A POLICY

Why siigo_send_invoice_email needs a policy

siigo_send_invoice_email moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

siigo_send_invoice_email Approval-gated

Any call to siigo_send_invoice_email 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": {
    "siigo_send_invoice_email": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about siigo_send_invoice_email

What does the siigo_send_invoice_email tool do? +

Send invoice by email (up to 5 addresses). It is categorised as a Financial tool in the Siigo MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on siigo_send_invoice_email? +

Register the Siigo MCP Server MCP server in PolicyLayer and add a rule for siigo_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 Siigo MCP Server. Nothing to install.

What risk level is siigo_send_invoice_email? +

siigo_send_invoice_email 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 siigo_send_invoice_email? +

Yes. Add a rate_limit block to the siigo_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 siigo_send_invoice_email completely? +

Set action: deny in the PolicyLayer policy for siigo_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 siigo_send_invoice_email? +

siigo_send_invoice_email is provided by the Siigo MCP Server MCP server (jdlar1/siigo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.