JSONing Mock API
Free and open source fake API for testing and prototyping
JSONing Mock API launched on November 26, 2025 with 6 votes, #2,995 of 9,796 launches that month.
What it does
Free and open-source fake API to test and prototype. It allows you to instantly generate a fully functional API from any JSON object. You can create rules to handle errors and customize HTTP codes, headers, and responses. The tool is completely free to use, and you can access the source code to run it locally.
Free and open source fake API for testing and prototyping Custom APIInstantly generate a custom API from a JSON object Rule EngineCreate rules to handle error cases and customize HTTP codes, headers, and bodies Free & Open sourceUse this tool for free; you can also retrieve the source code and set up a local installation
JSONing API is an open-source mock API available for download on Github , allowing you to have a local API. You also have the option to create a custom API online by using the editors below to define the resources and any rules. It will be immediately accessible. Notes: APIs are deleted once a day. If needed, you can recreate it on this page. Please limit the number of your calls, otherwise please create a local API. Note: Once a day, the APIs are deleted. You can return to this page to recreate your API. All resources should be placed in a single JSON object. Each attribute of this object is a resource containing an array of elements. { "products": [ { "id": "1", "name": "T-shirt",…from jsoning.com
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