list_containers

List Docker containers running on the current daemon.

Server Universal Mcp Toolkit markgatcha/universal-mcp-toolkit
Category Read
Risk class Low
Parameters 00 required

What list_containers does on Universal Mcp Toolkit

AI agents call list_containers to retrieve information from Universal Mcp Toolkit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why list_containers needs a policy

This tool performs a query operation that retrieves the state of Docker containers. It has no side effects, does not modify system state, does not execute arbitrary commands, and does not delete or manage container lifecycles. It is purely informational and therefore falls into the Read category.

From the tool's definition list_containers: List Docker containers running on the current daemon. The tool retrieves information about running containers without modifying, deleting, or executing anything.

Questions about list_containers

What does the list_containers tool do? +

List Docker containers running on the current daemon. It is categorised as a Read tool in the Universal Mcp Toolkit MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_containers? +

Register the Universal Mcp Toolkit MCP server in PolicyLayer and add a rule for list_containers: 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 Universal Mcp Toolkit. Nothing to install.

What risk level is list_containers? +

list_containers is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_containers? +

Yes. Add a rate_limit block to the list_containers 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 list_containers completely? +

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

list_containers is provided by the Universal Mcp Toolkit MCP server (markgatcha/universal-mcp-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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