Get a list of V standard library modules.
AI agents call list_v_stdlib_modules to retrieve information from V Language 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 information about available V standard library modules. It performs a simple query/enumeration with no capacity to modify, execute, or delete data. The blast radius of misuse is minimal—an agent can only discover what modules exist, which is informational only.
From the tool's definition Tool name 'list_v_stdlib_modules' and description 'Get a list of V standard library modules' indicate a retrieval operation with no side effects. The verb 'list' and 'get' are read-only operations that enumerate or fetch existing data.
Attacks that exploit this kind of access
Get a list of V standard library modules. It is categorised as a Read tool in the V Language MCP Server MCP Server, which means it retrieves data without modifying state.
Register the V Language MCP Server MCP server in PolicyLayer and add a rule for list_v_stdlib_modules: 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 V Language MCP Server. Nothing to install.
list_v_stdlib_modules 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_v_stdlib_modules 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_v_stdlib_modules. 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_v_stdlib_modules is provided by the V Language MCP Server MCP server (nexlab-one/python-vlang-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.
Teams ship this data inside their own products. See what a licence covers →