M
API Matrix

UUID Generator API

⭐ Beginner's Pick Test Data / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)
79 Score
Grade B
Visit Official Site Compare Alternatives

Overview

UUID Generator provides a simple API to generate universally unique identifiers (UUIDs) in multiple versions including v1, v4, and v5. No API key is needed and the response is plain JSON. UUIDs are essential for uniquely identifying records in databases and distributed systems.

💡

Beginner Tip

Use UUID v4 for most use cases — it is randomly generated and has virtually zero collision probability. UUID v1 includes a timestamp, and v5 is deterministic based on a name and namespace.

Available Data

randomly generated data
customizable output format
Use case: Integrate generate uuids data into web and mobile applications

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from UUID Generator",
    "description": "Generate UUIDs",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

(array of strings) Returns a JSON array of UUID strings, e.g. ["550e8400-e29b-41d4-a716-446655440000"]

Implementation Example 

// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://www.uuidtools.com/docs";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

404 Not Found Wrong URL path format
✓ Use the correct path: /api/generate/v4 (or v1, v3, v5) — check uuidtools.com/docs for exact routes
Need multiple UUIDs at once Default returns a single UUID
✓ Append /count/10 to generate a batch, e.g. /api/generate/v4/count/10
UUID not globally unique in my system Using a non-random UUID version like v1 or v5 incorrectly
✓ Stick to v4 for random generation; v5 requires a namespace and name to be deterministic

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 15/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 7/15
Response Time 238ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS NO
Category Test Data
Difficulty Beginner
Verified: 2026-04-04

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