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A colorful illustration of a forest stream with rocks, plants, and a waterfall flowing into a calm pond.
An illustrated hand pulls a glowing white book from a colorful bookshelf filled with books.
An illustrated warehouse scene with stacked boxes, a forklift, and sunlight streaming through large windows.
An abstract illustration of colorful 3D cubes stacked in various sizes with white clouds drifting between them.
Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.

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Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.
Illustration of a hand reaching through lush foliage with glowing star-like lights surrounding it.
Illustration of a wooden box filled with colorful geometric blocks.
Illustration of a person holding a futuristic mobile phone with a wavy pink design while sitting at a table with a laptop, pen, and coffee while riding transit, overlooking a scenic landscape.
A colorful illustration of a forest stream with rocks, plants, and a waterfall flowing into a calm pond.
An illustrated hand pulls a glowing white book from a colorful bookshelf filled with books.
An illustrated warehouse scene with stacked boxes, a forklift, and sunlight streaming through large windows.
An abstract illustration of colorful 3D cubes stacked in various sizes with white clouds drifting between them.
Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.
Illustration of a hand reaching through lush foliage with glowing star-like lights surrounding it.

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EnterpriseStartupsAgencies

Discover

IntegrationsTemplatesUtilitiesBlogReads and reportsCustomer storiesVideosInteractive tour

Developers

DocumentationCommunityRetool UniversityAPI referenceRPC referenceCLI referenceHire a developer

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 See all utilities
Generate App

Data Generator

Generate a custom dataset that you can read and write to via a REST API
Frequently Asked Questions
Why use this data generator?

This data generator is powered by Retool Embed, enabling teams to build public, customer-facing embedded apps like this free utility. It uses some of our favorite open source libraries like json-server, Moment.js, faker.js and Lodash, which means it is completely editable and customizable.

Will my API persist data?

Yes, writes are persisted. Your API has GET, PUT, POST, PATCH, and DELETE endpoints for reading + writing to your dataset.

How long will the sample API be available for?

Basically, for as long as you continue using it. If you don't use it for 30 days, we may delete it. Please do contact us if you have a different usage pattern.

Can I use my API outside Retool?

Yes, you can call this API from anywhere (using cURL, Postman, from a mobile app, etc.). To use it in Retool, use our REST API connector.

How big of a dataset can I generate?

The maximum number of rows for your dataset is 100. Please contact us if you need an API with more data.

Can I generate an API using other methods?

Yes, you can generate an API from mock data or by uploading a CSV.

Feedback or questions?
Let us know here
Platform
AgentsNew
AI primitivesNew
App builder
Mobile apps
Workflows
Database
External apps
Self-hosting
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Enterprise
Startups
Agencies
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Use cases
Integrations
Templates
Utilities
Blog
Reads and reports
Customer stories
Videos
Developers
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Retool University
Hire a developer
Changelog
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© Retool 2025
Company
About
Careers
Partners
Newsroom
Start for freeStart for freeBook a demoBook a demo
Terms of usePrivacy policySecurityTrust CenterSite map
© Retool 2025