AI agents call containers_list to retrieve information from ChatGPT 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 and displays information about existing Docker containers. It performs no mutations, does not execute code or commands, and does not delete or create resources. While the sibling tools on this server include destructive operations (container_remove) and code execution (container_exec), containers_list itself is purely informational.
From the tool's definition Tool name 'containers_list' and description 'List all Docker containers' indicate a query operation that retrieves container information without modification or side effects.
Documented attack patterns abuse exactly the kind of access containers_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and ChatGPT MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for containers_list:
{
"version": "1",
"default": "deny",
"tools": {
"containers_list": {}
}
}containers_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all Docker containers. It is categorised as a Read tool in the ChatGPT MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ChatGPT MCP Server MCP server in PolicyLayer and add a rule for containers_list: 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 ChatGPT MCP Server. Nothing to install.
containers_list 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 containers_list 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 containers_list. 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.
containers_list is provided by the ChatGPT MCP Server MCP server (toowiredd/chatgpt-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from ChatGPT MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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7 ChatGPT MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.