vtex_create_specification · MCP VTEX Server MCP

WHAT IT DOES

What vtex_create_specification does on MCP VTEX Server

AI agents use vtex_create_specification to create or update resources in MCP VTEX Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP VTEX Server environment.

WHY IT NEEDS A POLICY

Why vtex_create_specification needs a policy

This tool creates new specification fields in the VTEX catalog system. Creating catalog specifications is a Write operation because it creates new metadata structures that can be modified or deleted later.

From the tool's definition Tool name 'vtex_create_specification' and description 'Create a new specification field in VTEX catalog' indicates creation of catalog metadata. This is a reversible write operation that modifies the product specification structure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vtex_create_specification Rate-limited

vtex_create_specification stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vtex_create_specification": {
      "limits": [
        {
          "counter": "vtex_create_specification_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MCP VTEX Server, so you can run agents against it safely.

FAQ

Questions about vtex_create_specification

What does the vtex_create_specification tool do? +

Create a new specification field in VTEX catalog. It is categorised as a Write tool in the MCP VTEX Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vtex_create_specification? +

Register the MCP VTEX Server MCP server in PolicyLayer and add a rule for vtex_create_specification: 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.

What risk level is vtex_create_specification? +

vtex_create_specification is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit vtex_create_specification? +

Yes. Add a rate_limit block to the vtex_create_specification 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.

How do I block vtex_create_specification completely? +

Set action: deny in the PolicyLayer policy for vtex_create_specification. 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.

What MCP server provides vtex_create_specification? +

vtex_create_specification 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.