Create a new event for an existing transaction (capture, refund, void, etc.)
AI agents use tiendanube_create_transaction_event to commit financial operations through Tienda Nube MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool creates financial transaction events including captures (charging money), refunds (returning money), and voids (canceling authorization). These directly affect financial flows and payment processing, making it Financial category with critical severity since misuse could result in unauthorized charges, refunds, or voided transactions.
From the tool's definition Create a new event for an existing transaction (capture, refund, void, etc.)
Attacks that exploit this kind of access
Create a new event for an existing transaction (capture, refund, void, etc.). It is categorised as a Financial tool in the Tienda Nube MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Tienda Nube MCP Server MCP server in PolicyLayer and add a rule for tiendanube_create_transaction_event: 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 Tienda Nube MCP Server. Nothing to install.
tiendanube_create_transaction_event 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 tiendanube_create_transaction_event 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 tiendanube_create_transaction_event. 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.
tiendanube_create_transaction_event is provided by the Tienda Nube MCP Server MCP server (pedrohsguimaraes/nuvem-shop-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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