Show which Node.js version is currently active in this session.
AI agents call nvm_current to retrieve information from NVM MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and returns the current active Node.js version—a simple information retrieval operation with no side effects, no code execution, and no data modification. It falls squarely into the Read category as a safe, passive diagnostic query.
From the tool's definition The tool name is 'nvm_current' and the description states it will 'Show which Node.js version is currently active in this session.' The verb 'show' indicates a read-only query operation that retrieves state information without modifying or executing anything.
Attacks that exploit this kind of access
Show which Node.js version is currently active in this session. It is categorised as a Read tool in the NVM MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NVM MCP Server MCP server in PolicyLayer and add a rule for nvm_current: 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 NVM MCP Server. Nothing to install.
nvm_current 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 nvm_current 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 nvm_current. 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.
nvm_current is provided by the NVM MCP Server MCP server (realjacoblinder/nvm-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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