List all coupons
AI agents call vtex_list_coupons to retrieve information from MCP VTEX Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves coupon information without creating, modifying, deleting, or executing any operations. It is a straightforward read operation on existing coupon data. The blast radius is minimal—an AI agent listing coupons cannot cause financial harm, data loss, or unauthorized changes. Severity is low because the operation is informational only.
From the tool's definition Tool name 'vtex_list_coupons' and description 'List all coupons' indicate a query/retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
List all coupons. It is categorised as a Read tool in the MCP VTEX Server MCP Server, which means it retrieves data without modifying state.
Register the MCP VTEX Server MCP server in PolicyLayer and add a rule for vtex_list_coupons: 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 MCP VTEX Server. Nothing to install.
vtex_list_coupons is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the vtex_list_coupons 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 vtex_list_coupons. 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.
vtex_list_coupons is provided by the MCP VTEX Server MCP server (leosepulveda/mcp-vtex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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