vtex_create_app_token · MCP VTEX Server MCP: Risk & Policy

WHAT IT DOES

What vtex_create_app_token does on MCP VTEX Server

AI agents use vtex_create_app_token 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_app_token needs a policy

This tool creates a new app token, which is a reversible write operation that generates a new authentication credential. However, the severity is elevated to 'high' rather than medium because: (1) tokens are security-sensitive artifacts whose creation can enable unauthorized access if misused, (2) the VTEX platform context shows this server manages critical e-commerce operations including payment configurations and…

From the tool's definition Tool name 'vtex_create_app_token' and description 'Create a new app token' indicate creation of a new authentication credential.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vtex_create_app_token Rate-limited

vtex_create_app_token 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_app_token": {
      "limits": [
        {
          "counter": "vtex_create_app_token_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_app_token

What does the vtex_create_app_token tool do? +

Create a new app token. 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_app_token? +

Register the MCP VTEX Server MCP server in PolicyLayer and add a rule for vtex_create_app_token: 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_app_token? +

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

Can I rate-limit vtex_create_app_token? +

Yes. Add a rate_limit block to the vtex_create_app_token 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_app_token completely? +

Set action: deny in the PolicyLayer policy for vtex_create_app_token. 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_app_token? +

vtex_create_app_token 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.