resend_invoice · Ontraport MCP Server MCP: Risk & Policy

WHAT IT DOES

What resend_invoice does on Ontraport MCP Server

AI agents invoke resend_invoice to trigger actions in Ontraport MCP Server. 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 resend_invoice needs a policy

This tool triggers an external email operation (resending an invoice email), which is an external communication action. It does not delete data or move money directly, but it executes an outbound email action with real-world side effects. The blast radius is medium since misuse could cause repeated unwanted emails to customers.

From the tool's definition Resend an invoice email for a previously charged transaction

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

resend_invoice Rate-limited

resend_invoice 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": {
    "resend_invoice": {
      "limits": [
        {
          "counter": "resend_invoice_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 Ontraport MCP Server, so you can run agents against it safely.

FAQ

Questions about resend_invoice

What does the resend_invoice tool do? +

Resend an invoice email for a previously charged transaction. It is categorised as a Execute tool in the Ontraport MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on resend_invoice? +

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

What risk level is resend_invoice? +

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

Can I rate-limit resend_invoice? +

Yes. Add a rate_limit block to the resend_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 resend_invoice completely? +

Set action: deny in the PolicyLayer policy for resend_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 resend_invoice? +

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