Is MockX.dev free to use?

Yes, MockX.dev is completely free to use and doesn't require any registration. You can create and host mock APIs instantly without any cost.

What features does MockX.dev offer?

MockX.dev offers features like custom HTTP status codes, response headers, CORS support, authentication simulation, API versioning, response delays, request parameter handling, and pre-defined response templates.

About MockX.dev | Free Mock API Creation Tool & JSON Hosting

Q: What is MockX.dev?

MockX.dev is a free tool for creating mock APIs and hosting JSON responses. It's perfect for frontend developers, QA testers, and API documentation writers who need to simulate API endpoints without backend setup.

About MockX.dev

MockX.dev is a powerful developer tool designed to simplify API development and testing. Our service allows you to create and host mock HTTP responses and JSON APIs with just a few clicks, no account required. Perfect for frontend developers, QA testers, and API documentation writers.

Whether you're building a frontend application without a ready backend, need to test API integrations, or want to prototype an API quickly, MockX.dev provides all the tools you need to get up and running in seconds. Our platform is trusted by developers worldwide for rapid API mocking.

With MockX.dev, you can instantly create API endpoints that return custom JSON responses with configurable status codes, headers, and authentication settings. This makes it ideal for simulating real-world API behaviors during development and testing phases.

Features for API Developers

Instant Setup

Create and host your JSON API responses in seconds with no account required

Real-time Validation

JSON validation with syntax highlighting for error-free API development

Custom Status Codes

Configure HTTP status codes to simulate different API response scenarios

Authentication

Simulate API Key, Bearer Token, and Basic Auth authentication

Response Delays

Simulate network conditions with configurable response delays

API Versioning

Support for testing multiple endpoint versions

Why Use MockX.dev?

MockX.dev was created to solve a common problem in web and app development - the need for quick, reliable API endpoints during development. Instead of waiting for backend services to be completed, you can use MockX.dev to simulate those APIs instantly.

Our service is completely free to use and doesn't require any registration. Simply create your mock API, save the unique API key, and start developing against your custom endpoints right away.

Perfect for:

Frontend developers who need to work independently from backend teams
Testing different API response scenarios without modifying the actual backend
API documentation writers who want to provide working examples
Quick prototyping of application ideas that require API interactions
Teaching and learning REST API concepts with practical examples

Getting Started

1

Create Your API

Enter your JSON response and configure your API settings

2

Get Your Endpoint

Receive a unique URL and API key for your mock API

3

Start Developing

Use the endpoint in your application immediately

Change Log

v2.1 Current

Added custom headers support
Improved API editing workflow
Enhanced JSON editor and validation
Added recent APIs dashboard
Added template selection

v2.0

Added API versioning
Added authentication simulation
Added request parameters
Added response templates
Added developer theme UI

v1.5

Added JSON validation with syntax highlighting
Added CORS support
Added response delays

v1.0

Initial Release - November 2018