Crypto & Security 1 credit COMPUTE

UUID v4 API

Generate RFC 4122 compliant UUID v4 identifiers via REST API. Each UUID is a 128-bit random value formatted as xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. Generated using Node.js crypto.randomUUID() — cryptographically random, not Math.random().

Try it live →

How it works

POST an empty JSON object (or any input) and receive a new UUID v4. Each call generates a fresh UUID using the system CSPRNG. The API also supports batch generation — request up to 100 UUIDs in a single call.

Use cases

Generate database primary keys before insert — no round-trip to the database
Create idempotency keys for payment requests or distributed operations
Generate correlation IDs for distributed tracing across microservices
Produce unique session identifiers, file names, or upload tokens
Create reproducible test fixtures where deterministic IDs are needed

API Reference

POST https://slopshop.gg/v1/crypto-uuid
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

Input parameters

Parameter	Type	Required	Description
`input / data`	string	required	The input data to hash or process

Example response

{
  "data": {
    "uuid": "550e8400-e29b-41d4-a716-446655440000"
  },
  "meta": {
    "credits_used": 1,
    "engine": "real",
    "ms": 4
  }
}

Examples

Three real-world scenarios showing how developers use UUID v4 in production.

Example 1

Database primary key

Generate a UUID to use as a primary key before inserting a new record.

curl -X POST https://slopshop.gg/v1/crypto-uuid \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Example 2

Idempotency key for payment

Create a unique key to prevent duplicate payment processing.

curl -X POST https://slopshop.gg/v1/crypto-uuid \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Example 3

Distributed trace ID

Generate a correlation ID to trace a request across microservices.

curl -X POST https://slopshop.gg/v1/crypto-uuid \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Code examples

curl

curl -X POST https://slopshop.gg/v1/crypto-uuid \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input": "your data here"}'

Python

import requests

response = requests.post(
    "https://slopshop.gg/v1/crypto-uuid",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"input": "your data here"}
)
result = response.json()
print(result["data"])

Node.js

const response = await fetch("https://slopshop.gg/v1/crypto-uuid", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({ input: "your data here" })
});
const { data } = await response.json();
console.log(data);

CLI

# Install the Slopshop CLI
npm install -g slopshop

# Set your API key
export SLOPSHOP_KEY=your_api_key

# Call crypto-uuid
slop crypto-uuid '{"input": "your data here"}'

Pricing

Credits per call

credits

Cost per call

$0.001

at Starter tier

Tier

COMPUTE

Pure compute

Credits are purchased in bundles starting at $1 for 1,000 credits. All compute APIs like this one use 1 credit per call — that's $0.001. See all pricing tiers.

Related APIs in Crypto & Security

View the full API catalog · Try in playground · Documentation