List all applications with visible windows, including their associated process information. Returns a list of processes that have visible windows, including their process names, PIDs, and startup commands.
AI agents call list_visible_apps to retrieve information from Wuying AgentBay without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves system state information (running applications and their metadata: process names, PIDs, startup commands) without modifying, executing, or destructively affecting any system resources. It is a straightforward enumeration/discovery capability typical of Read operations.
From the tool's definition Tool name 'list_visible_apps' combined with description stating it 'List all applications with visible windows' and 'Returns a list of processes' - purely informational retrieval with no modification, deletion, or execution capabilities.
Documented attack patterns abuse exactly the kind of access list_visible_apps gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Wuying AgentBay, and nothing reaches the server without passing your rules. This is the rule we recommend for list_visible_apps:
{
"version": "1",
"default": "deny",
"tools": {
"list_visible_apps": {}
}
}list_visible_apps 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 applications with visible windows, including their associated process information. Returns a list of processes that have visible windows, including their process names, PIDs, and startup commands. It is categorised as a Read tool in the Wuying AgentBay MCP Server, which means it retrieves data without modifying state.
Register the Wuying AgentBay MCP server in PolicyLayer and add a rule for list_visible_apps: 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 Wuying AgentBay. Nothing to install.
list_visible_apps 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 list_visible_apps 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 list_visible_apps. 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.
list_visible_apps is provided by the Wuying AgentBay MCP server (michael98671/agentbay). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Wuying AgentBay, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
59 Wuying AgentBay tools catalogued and risk-classified — across an index of 43,000+ MCP servers.