LIST SHIPPING CARRIERS - Retrieve shipping carriers configured for the store.
AI agents call tiendanube_list_shipping_carriers 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 configuration data about shipping carriers available to the store. It has no side effects, does not modify any data, and poses minimal security risk if misused by an agent. The worst-case scenario would be an agent learning which shipping carriers are available, which is non-sensitive operational information. Classification as Read is appropriate.
From the tool's definition The tool name contains 'list' and the description states 'Retrieve shipping carriers' — both indicate a read operation that queries existing data without modification.
Attacks that exploit this kind of access
LIST SHIPPING CARRIERS - Retrieve shipping carriers configured for the store. 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_shipping_carriers: 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_shipping_carriers 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_shipping_carriers 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_shipping_carriers. 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_shipping_carriers 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.
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