List all app tokens
AI agents call vtex_list_app_tokens to retrieve information from MCP VTEX Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves app tokens without modifying them, placing it in the Read category. However, severity is elevated to high because app tokens are sensitive security credentials. If an AI agent exfiltrates this list, tokens could be compromised and used to escalate privileges or access other platform resources. The blast radius is significant despite the operation being non-destructive.
From the tool's definition Tool name is 'vtex_list_app_tokens' and description states 'List all app tokens' — a query operation that retrieves authentication credentials.
Attacks that exploit this kind of access
List all app tokens. It is categorised as a Read tool in the MCP VTEX Server MCP Server, which means it retrieves data without modifying state.
Register the MCP VTEX Server MCP server in PolicyLayer and add a rule for vtex_list_app_tokens: 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.
vtex_list_app_tokens 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 vtex_list_app_tokens 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 vtex_list_app_tokens. 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.
vtex_list_app_tokens 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.
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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