List installed packages for a specific Python environment.
AI agents call list_installed_packages to retrieve information from MCP Python Interpreter 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 installed packages in a Python environment. It performs a read-only query with no capability to modify, delete, execute, or create resources. The blast radius of misuse is minimal—an attacker could only gain visibility into what packages are available, which does not enable further compromise without additional tools from the sibling set.
From the tool's definition Tool name: 'list_installed_packages'. Description: 'List installed packages for a specific Python environment.' The verb 'List' combined with 'installed packages' indicates querying/retrieving information with no side effects.
Attacks that exploit this kind of access
List installed packages for a specific Python environment. It is categorised as a Read tool in the MCP Python Interpreter MCP Server, which means it retrieves data without modifying state.
Register the MCP Python Interpreter MCP server in PolicyLayer and add a rule for list_installed_packages: 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 Python Interpreter. Nothing to install.
list_installed_packages 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_installed_packages 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_installed_packages. 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_installed_packages is provided by the MCP Python Interpreter MCP server (luutuankiet/mcp-python-interpreter). 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.
Teams ship this data inside their own products. See what a licence covers →