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arjshiv

Local Utilities MCP Server

by arjshiv

get_time_and_date

Retrieve current time, date, day of week, and timestamp in multiple formats for system integration and time-sensitive operations.

Instructions

Returns the current time, date, day of week, and timestamp in various formats

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • Core handler function that retrieves and formats the current time, date, day of week, ISO timestamp, and Unix timestamp.
    export function getCurrentTimeAndDate(): ITimeResponse {
      const now = new Date();
      const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
      
      return {
        time: now.toLocaleTimeString(),
        date: now.toLocaleDateString(),
        dayOfWeek: days[now.getDay()],
        iso: now.toISOString(),
        timestamp: now.getTime(),
      };
    }
  • TypeScript interface defining the shape of the time and date response object.
    interface ITimeResponse {
      time: string;
      date: string;
      dayOfWeek: string;
      iso: string;
      timestamp: number;
    }
  • src/mcp/time.ts:25-37 (registration)
    Registers the 'get_time_and_date' tool with the MCP server, including description and execution handler.
    server.tool(
      "get_time_and_date",
      "Returns the current time, date, day of week, and timestamp in various formats",
      async () => {
        const result = getCurrentTimeAndDate();
        return {
          content: [{
            type: "text",
            text: JSON.stringify(result, null, 2)
          }]
        };
      }
    );
  • src/index.ts:24-24 (registration)
    Calls the module registration function to add the time tool to the main MCP server instance.
    registerTimeTool(server);
  • src/index.ts:9-9 (registration)
    Imports the registration function for the time tool.
    import { registerTimeTool } from "./mcp/time.js";
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. While it mentions the tool returns data 'in various formats,' it doesn't specify what those formats are, whether the data is localized, if there are rate limits, or how fresh/accurate the time data is. This leaves significant behavioral gaps for a tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that immediately states the tool's purpose without unnecessary words. It's appropriately sized for a simple tool with no parameters and gets straight to the point about what the tool delivers.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple read-only tool with no parameters and no output schema, the description is minimally adequate. It tells the agent what data to expect but doesn't provide enough detail about the return format or behavioral characteristics that would help the agent use it effectively in different contexts.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has 0 parameters with 100% schema description coverage, so the schema already fully documents the lack of inputs. The description appropriately doesn't waste space discussing parameters, maintaining focus on what the tool returns rather than what it accepts.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's function: 'Returns the current time, date, day of week, and timestamp in various formats.' It specifies the verb ('returns') and the resource (time/date data), but doesn't explicitly differentiate from sibling tools like 'get_hostname' or 'get_public_ip' that also retrieve system information.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention any prerequisites, specific contexts where it's appropriate, or how it differs from other time/date-related tools that might exist in a broader ecosystem.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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