AI agents call list_apps to retrieve information from Iac without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool enumerates installed applications and their metadata—a read-only operation with no ability to modify, execute, or delete anything. While the server's broader capability to automate native applications (via sibling Execute tools like execute_app_command, iac_mcp_click_element) is high-risk, list_apps itself simply queries the system state.
From the tool's definition Tool name 'list_apps' and description 'List all available macOS applications with their metadata' indicate data retrieval with no side effects.
Attacks that exploit this kind of access
List all available macOS applications with their metadata. It is categorised as a Read tool in the Iac MCP Server, which means it retrieves data without modifying state.
Register the Iac MCP server in PolicyLayer and add a rule for list_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 Iac. Nothing to install.
list_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_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_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_apps is provided by the Iac MCP server (jsavin/iac-mcp). 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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