JSONing Mock API – Free open-source tool for generating fake APIs from JSON

Summary: JSONing Mock API generates functional fake APIs from any JSON object, enabling testing and prototyping with customizable HTTP codes, headers, and responses. It is free and open source, allowing local deployment.

What it does

It creates fully functional APIs from JSON objects and supports rules for error handling and response customization.

Who it's for

Developers needing fake APIs for testing and prototyping applications.

Why it matters

It simplifies API testing by providing instant, customizable mock endpoints without backend setup.