Generate Realistic Mock Data
with JSON Layouts

Define your data structure once, get unlimited realistic random data via API. Perfect for prototyping, testing, and development.

GET /v1/layouts/user-profile?count=2&seed=42
[
  {
    "id": 1,
    "name": "Sarah Johnson",
    "email": "[email protected]",
    "age": 28,
    "is_active": true
  },
  {
    "id": 2,
    "name": "James Wilson",
    "email": "[email protected]",
    "age": 45,
    "is_active": true
  }
]
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30+ Data Types

Names, emails, addresses, dates, numbers, nested objects, and more.

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Seed-Based Reproducibility

Same seed = same data. Perfect for consistent testing.

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Multi-Language Support

Generate data in English, Korean, and more languages.