Delete a product variant custom field (only custom fields created by current app)
AI agents call tiendanube_delete_product_variant_custom_field to permanently remove resources in Tienda Nube MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion operations that cannot be undone fall into the Destructive category. While scoped to custom fields only (created by the current app), this still represents permanent data loss. The high severity reflects the blast radius: an AI agent with access could accidentally delete multiple product variant custom fields, disrupting product catalog data and potentially breaking integrations that depend on those fields.
From the tool's definition The tool name explicitly states 'delete' and the description confirms it 'Delete a product variant custom field'. This is an irreversible deletion operation that removes data from the e-commerce platform.
Attacks that exploit this kind of access
Delete a product variant custom field (only custom fields created by current app). It is categorised as a Destructive tool in the Tienda Nube MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Tienda Nube MCP Server MCP server in PolicyLayer and add a rule for tiendanube_delete_product_variant_custom_field: 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_delete_product_variant_custom_field is a Destructive 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_delete_product_variant_custom_field 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_delete_product_variant_custom_field. 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_delete_product_variant_custom_field 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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