Skip to main content
Glama

generateUUID

Generate random UUIDs for unique identifiers in applications using crypto.randomUUID().

Instructions

Generate a random UUID using crypto.randomUUID()

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • The handler function that executes the generateUUID tool logic, calling randomUUID() and returning the result in MCP content format.
    handler: async () => {
      return {
        content: [{
          type: 'text',
          text: randomUUID()
        }]
      };
    }
  • Input schema for the generateUUID tool, specifying an empty object (no input parameters required).
    inputSchema: {
      type: 'object',
      properties: {}
    },
  • Full definition of the generateUUID tool within generatorTools export, including name, description, schema, and handler.
    generateUUID: {
      name: 'generateUUID',
      description: 'Generate a random UUID using crypto.randomUUID()',
      inputSchema: {
        type: 'object',
        properties: {}
      },
      handler: async () => {
        return {
          content: [{
            type: 'text',
            text: randomUUID()
          }]
        };
      }
    },
  • src/index.ts:32-32 (registration)
    Registers generatorTools (including generateUUID) by spreading it into the allTools object used by the MCP server for tool listing and execution.
    ...generatorTools,
  • Imports the randomUUID utility from Node.js crypto module used in the generateUUID handler.
    import { randomUUID } from 'node:crypto';
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the method (crypto.randomUUID()) which implies cryptographic randomness and standard UUID format, but doesn't mention performance characteristics, error conditions, or output format details. It provides basic behavioral context but lacks depth for a tool with no annotation support.

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 communicates the complete purpose without any wasted words. It's appropriately sized for a simple, parameterless tool and is perfectly front-loaded with the essential information.

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

Completeness4/5

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

For a simple, parameterless tool with no output schema, the description provides adequate context about what the tool does and how it works. However, it could be more complete by mentioning the output format (UUID string) or standard compliance (RFC 4122), though the lack of output schema doesn't strictly require this.

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 absence of inputs. The description appropriately doesn't add parameter information beyond what the schema provides, maintaining focus on the tool's purpose. Baseline for 0 parameters is 4.

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

Purpose5/5

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

The description explicitly states the specific action ('Generate a random UUID') and the implementation method ('using crypto.randomUUID()'), which clearly distinguishes it from sibling tools like hashData or generateQRCode. It provides a complete verb+resource+method statement without being tautological.

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

Usage Guidelines3/5

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

The description implies usage context (generating UUIDs for identification purposes) but doesn't explicitly state when to use this tool versus alternatives or any prerequisites. It doesn't provide guidance on scenarios where other tools like hashData might be more appropriate, leaving usage context inferred rather than specified.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/cyanheads/toolkit-mcp-server'

If you have feedback or need assistance with the MCP directory API, please join our Discord server