cancel_sent_invoice

Cancel a sent invoice

SERVERPayPal SOURCE@modelcontextprotocol/server-paypal

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/paypal/cancel-sent-invoice.md

WHAT IT DOES

What cancel_sent_invoice does on PayPal

AI agents call cancel_sent_invoice to permanently remove resources in PayPal, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why cancel_sent_invoice is rated Critical

Cancelling a sent invoice is an irreversible action that voids a financial document already delivered to a recipient. This cannot be undone (the invoice transitions to a cancelled state), making it Destructive. The financial dimension elevates severity, but since no money is directly moved, Destructive is the most appropriate category over Financial.

From the tool's definition cancel_sent_invoice — 'Cancel a sent invoice'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cancel_sent_invoice 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 cancel_sent_invoice, this is the rule to start with:

cancel_sent_invoice Hidden

cancel_sent_invoice is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "cancel_sent_invoice"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about cancel_sent_invoice

What does the cancel_sent_invoice tool do? +

Cancel a sent invoice. It is categorised as a Destructive tool in the PayPal MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on cancel_sent_invoice? +

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

What risk level is cancel_sent_invoice? +

cancel_sent_invoice is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit cancel_sent_invoice? +

Yes. Add a rate_limit block to the cancel_sent_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 cancel_sent_invoice completely? +

Set action: deny in the PolicyLayer policy for cancel_sent_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 cancel_sent_invoice? +

cancel_sent_invoice 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.

KEEP EXPLORING

More on PayPal, and thousands of servers like it.

This server

All 30 PayPal tools → Critical-risk tools on this server →

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Guides

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