LIST DISCOUNTS - Retrieve store discounts (read-only).
AI agents call tiendanube_list_discounts to retrieve information from Tienda Nube MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves discount information from the store without modifying any data, creating side effects, or performing irreversible actions. It is a straightforward query operation with minimal risk if misused by an AI agent, as it only exposes existing discount data.
From the tool's definition Tool name contains 'list' and description explicitly states 'Retrieve store discounts (read-only)'. The read-only qualifier confirms no data modification occurs.
Attacks that exploit this kind of access
LIST DISCOUNTS - Retrieve store discounts (read-only). It is categorised as a Read tool in the Tienda Nube MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tienda Nube MCP Server MCP server in PolicyLayer and add a rule for tiendanube_list_discounts: 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_list_discounts 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 tiendanube_list_discounts 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_list_discounts. 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_list_discounts 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.
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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