Mock API Generator
Generate custom data & API to build apps in less than 30s
Mock API Generator launched on April 6, 2021 with 555 votes, #7 of 3,754 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
Mock API Generator creates custom REST APIs with read and write endpoints from sample datasets in under 30 seconds. Users can customize data using dozens of datatypes to build testing environments, business intelligence demos, and prototypes. The tool is designed for developers and engineers who need functional APIs quickly without setting up backend infrastructure.
written from the facts on this page · September 2026
From the sources
Generate a REST API with read + write endpoints on top of a sample dataset in less than 30 secs. Customize your dataset with dozens of datatypes. Built for testing, BI demo data, prototypes and more.
Backend not ready? Still waiting for database access? Generate a custom dataset that you can read and write to via a REST API.
Even without a backend or database access, you can quickly generate custom datasets and interact with them through a flexible REST API, then build your application using Retool. Create and customize datasets that perfectly align with your specific project requirements. Interact with your data through straightforward, well-documented REST API endpoints . Quickly develop functional applications using Retool's powerful interface builder. Yes, your API has GET, PUT, POST, PATCH, and DELETE endpoints for reading + writing to your dataset. Writes are persisted. Your sample API will be available as long as you continue using it. We may delete it if it hasn’t been used in the last 30 days - please…from retool.com
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