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Mock JSON API Generator

API response and schema creation tool for testing purposes

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Mock JSON API Generator & Schema Builder

Generate realistic mock API responses with customizable data schemas for testing, prototyping, and development. Perfect for frontend development and API testing.

Dynamic Schema Builder

Create custom data schemas with multiple field types, constraints, and realistic data generation.

REST API Simulation

Generate complete API responses with status codes, metadata, and pagination for realistic testing.

Code Generation

Generate ready-to-use fetch code examples and API integration snippets for multiple languages.

Development Applications

  • Frontend Prototyping

    Create mock data for React, Vue, Angular applications during development

  • API Testing & QA

    Generate test data for automated testing and quality assurance workflows

  • Demo & Presentations

    Create realistic demo data for client presentations and product showcases

  • Backend Development

    Mock API responses while backend services are under development

Supported Data Types & Features

Basic Types
string, number, boolean, object, array
Fundamental data types with customizable constraints
Advanced Features
pagination, status codes, metadata
Enterprise-ready API response structure
Realistic Data
names, emails, dates, UUIDs, ranges
Human-readable and contextually appropriate data
Export Options
JSON download, code snippets, copy to clipboard
Multiple export formats for different use cases

🚀 Mock API Best Practices

• Use realistic data patterns

Match production data structure and constraints

• Include edge cases

Test with empty arrays, null values, and boundary conditions

• Implement proper pagination

Use consistent pagination metadata for large datasets

• Version your mock schemas

Keep mock data in sync with API evolution

💾Bookmark this tool for later use
• Press Ctrl+D (Cmd+D on Mac)