send_invoice_reminder

Send a reminder for an existing invoice

SERVERPayPal SOURCE@modelcontextprotocol/server-paypal

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/paypal/send-invoice-reminder.md

WHAT IT DOES

What send_invoice_reminder does on PayPal

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

RISK

Why send_invoice_reminder is rated Medium

Sending an invoice reminder triggers an external communication (email/notification) to a recipient, which is a side-effecting write/execute action. However, it does not move money or modify financial records — it only sends a reminder message. The blast radius is medium because misuse could spam or harass customers with unwanted reminders, but it cannot directly cause financial loss or data destruction.

From the tool's definition Send a reminder for an existing invoice

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs send_invoice_reminder safely

PolicyLayer is an MCP gateway: it sits between your AI agents and PayPal, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For send_invoice_reminder, this is the rule to start with:

send_invoice_reminder Rate-limited

send_invoice_reminder 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": {
    "send_invoice_reminder": {
      "limits": [
        {
          "counter": "send_invoice_reminder_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect PayPal, apply this rule, and every send_invoice_reminder call is checked against it from then on.

FAQ

Questions about send_invoice_reminder

What does the send_invoice_reminder tool do? +

Send a reminder for an existing invoice. It is categorised as a Write tool in the PayPal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on send_invoice_reminder? +

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

What risk level is send_invoice_reminder? +

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

Can I rate-limit send_invoice_reminder? +

Yes. Add a rate_limit block to the send_invoice_reminder 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_reminder completely? +

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

send_invoice_reminder is provided by the PayPal MCP server (@modelcontextprotocol/server-paypal). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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