AI agents use wave_record_invoice_payment to commit financial operations through Waveapps — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool directly commits a financial transaction by recording a payment against an invoice. It moves money records and creates financial obligations/settlements in the accounting system. Misuse could result in fraudulent or erroneous payment records, making it Financial category with critical severity given the direct financial impact.
From the tool's definition Records a manual payment (cash / cheque / bank transfer / etc.) against an approved invoice. REST POST
Attacks that exploit this kind of access
Records a manual payment (cash / cheque / bank transfer / etc.) against an approved invoice. REST POST. It is categorised as a Financial tool in the Waveapps MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Waveapps MCP server in PolicyLayer and add a rule for wave_record_invoice_payment: 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 Waveapps. Nothing to install.
wave_record_invoice_payment is a Financial 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 wave_record_invoice_payment 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 wave_record_invoice_payment. 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.
wave_record_invoice_payment is provided by the Waveapps MCP server (lunaparker/waveapps-mcp). 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.
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