Void an invoice. PUT /invoices/{invoiceId}/void. CRITICAL: This action is IRREVERSIBLE. Use with caution.
AI agents call void_invoice to permanently remove resources in Rebillia MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Voiding an invoice is a destructive operation that irreversibly modifies critical financial data. While it involves financial records, the primary concern is the irreversible nature of the action—an invoice cannot be unvoided or recovered to its previous state. This makes it Destructive rather than merely Financial.
From the tool's definition Tool description explicitly states 'This action is IRREVERSIBLE' and the operation voids an invoice, which permanently invalidates a financial document and cannot be undone.
Attacks that exploit this kind of access
Void an invoice. PUT /invoices/{invoiceId}/void. CRITICAL: This action is IRREVERSIBLE. Use with caution. It is categorised as a Destructive tool in the Rebillia MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Rebillia MCP Server MCP server in PolicyLayer and add a rule for void_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 Rebillia MCP Server. Nothing to install.
void_invoice is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the void_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.
Set action: deny in the PolicyLayer policy for void_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.
void_invoice is provided by the Rebillia MCP Server MCP server (rhinosaas/rebillia-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →