Skip to content

Free Test Data APIs

Mock endpoints, fake records and sandboxes for development and testing.

48 listed · 36 need no key · 16 work in the browser

DummyJSON

Test Data

Fake REST API with products, users, posts, comments, todos and more

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

FakeNamely

Test Data

Fictional identities, addresses and names for tests

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

QuickMocker

Test Data

API mocking tool to generate contextual, fake or random data

No keyCORSHTTPS

Checked 4 days ago: not responding

View Details

RandomUser

Test Data

API for generating random user data like names, emails, addresses, and more. Provides JSON, XML, CSV, or YAML objects.

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

RoboHash

Test Data

Generate random robot/alien avatars

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

Sampuli

Test Data

Format-true synthetic test data for 90 countries: IDs, IBANs, cards, addresses

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

Waldrand Avatar

Test Data

Deterministic SVG/PNG/WebP avatars from any string, four styles

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

Yes No

Test Data

This API generates a random 'Yes' or 'No' response.

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

AddressMock

Test Data

Random US, Hong Kong and Cape Verde addresses with matched city, state and ZIP

No keyHTTPS

Verified 4 days ago: 100% uptime

View Details

Bacon Ipsum

Test Data

The Bacon Ipsum JSON API is a REST interface for generating meaty lorem ipsum text that can be utilized by any application. Users can specify parameters such as type of text, number of paragraphs, and format to get tailored responses.

No keyHTTPS

Verified 4 days ago: 97% uptime

View Details

FakerAPI

Test Data

APIs collection to get fake data

No keyHTTPS

Checked 4 days ago: not responding

View Details

FakeStoreAPI

Test Data

Fake store rest API for your e-commerce or shopping website prototype

No keyHTTPS

Checked 4 days ago: not responding

View Details

flaky

Test Data

Fake REST API with chaos controls: force any status code, add latency, or a failure rate

No keyHTTPS

Verified 4 days ago: 100% uptime

View Details

JSONing

Test Data

This API allows users to create a customizable mock API for testing and prototyping. Users can define resources and rules to specify how the API handles requests and responses. It is free and open-source, enabling easy setup for local installations.

No keyHTTPS

Verified 4 days ago: 100% uptime

View Details

Lorem API

Test Data

The Ultimate Lorem Ipsum Generator

No key

Verified 4 days ago: 100% uptime

View Details

Loripsum

Test Data

The "lorem ipsum" generator that doesn't suck

No key

Checked 4 days ago: not responding

View Details

Metaphorsum

Test Data

Generate demo paragraphs giving number of words and sentences

No key

Checked 4 days ago: not responding

View Details

Micro-Jaymock

Test Data

Tiny API mocking microservice for generating fake JSON data

No keyHTTPS

Checked 4 days ago: not responding

View Details

Mockae

Test Data

Mockae API allows you to create mock REST APIs with Lua code execution, enabling customization of headers, bodies, and HTTP status codes. It's ideal for testing and prototyping, providing a flexible way to generate API responses quickly and easily.

No keyHTTPS

Verified 4 days ago: 100% uptime

View Details

All 48 Test Data APIs

Free Test Data APIs — common questions

Counts and timings below come from our own scheduled checks of this category.

How many free test data APIs are there?

We track 48 in this category, of which 35 responded at our last check. 36 of them need no API key.

Which test data APIs work without an API key?

36 of the 48 entries here need no credential. Filter this page by "no key" to see them, or browse the no-key collection for every keyless API across all categories.

Can I use these test data APIs in a browser app?

10 entries in this category need no key and return CORS headers, which is the combination that lets you call them straight from client-side JavaScript. The rest need a server or a proxy in between.

Which is the fastest free test data API?

Of the keyless options that responded at our last check, AddressMock was quickest at a median 61 ms. Speed is only one factor — coverage and licensing usually matter more — but it is measured here rather than claimed.

How do you know these APIs still work?

We call every listing on a schedule and record the status code, response time and whether CORS headers came back. Those results drive the badges on this page. Across the whole catalogue, 487 of 2,712 entries were not responding at the last full run, which is the sort of thing an unchecked list never tells you.