Greets the currently logged-in user using their name from the request
AI agents call greet-logged-in-user to retrieve information from NestJS MCP Server Module without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a retrieval operation—reading the authenticated user's identity from the request context and returning a greeting message. It has no side effects, does not modify data, does not execute arbitrary code or commands, does not delete anything, and does not involve financial transactions. It is clearly a Read category tool with low severity due to its benign nature and limited blast radius.
From the tool's definition Tool 'greet-logged-in-user' retrieves and displays the name of the currently logged-in user from the request context. The description indicates it 'greets' the user, a read-only operation with no data modification, deletion, or external execution.
Attacks that exploit this kind of access
Greets the currently logged-in user using their name from the request. It is categorised as a Read tool in the NestJS MCP Server Module MCP Server, which means it retrieves data without modifying state.
Register the NestJS MCP Server Module MCP server in PolicyLayer and add a rule for greet-logged-in-user: 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 NestJS MCP Server Module. Nothing to install.
greet-logged-in-user 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 greet-logged-in-user 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 greet-logged-in-user. 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.
greet-logged-in-user is provided by the NestJS MCP Server Module MCP server (rekog-labs/mcp-nest). 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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