UUID Generator

Generate random UUIDv4 values for use in APIs, databases, test data, and automation scripts. UUIDs are generated through the HeffTools API so you can mirror the behavior used in your automation.

Generated UUIDs

Below is a simple list of generated UUIDs, followed by the raw JSON response from the API.

UUID List

Raw JSON Response

Backed by GET /api/v1/uuid/generate?count=

What Is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely identify objects across systems without relying on a centralized ID generator. UUIDv4 values are generated from random data, making collisions extremely unlikely for normal workloads.

Common Uses for UUIDs

Database primary keys and object identifiers
Correlation IDs for tracing API or microservice requests
Temporary IDs in job queues and background workers
File names and object keys in distributed storage
Seeding test data and fixtures in development environments

Calling the UUID API from Your Code

This page uses the same API you can call from your own scripts and services:

GET /api/v1/uuid/generate?count=2

Example response:

{
  "count": 2,
  "uuids": [
    "550e8400-e29b-41d4-a716-446655440000",
    "b5ffd3d2-87a2-4c4f-9d63-8c2d1c1c3f10"
  ]
}