JSONPlaceholder is a free online REST API that you can use whenever you need some fake data.

The URL for invoking the Basic API is https://api.random.org/json-rpc/2/invoke

$.ajax({ url: 'https://randomuser.me/api/', dataType: 'json', success: function(data) { console.log(data); } });

A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software.

Seed value for reproducible random data generation. API Key associated with your account. A JSON array of random user objects, or an error if the request is unsuccessful.

DummyJSON provides a free fake REST API with placeholder JSON data for development, testing, and prototyping. Access realistic data quickly for your projects.

Generates random user data. Public API and 16 alternatives to building better test data products in 2025

Advice Slip JSON API · Endpoints · Random advice · Advice by ID · Searching advice · Errors and notices · Messages · Objects · Slip object · Search object · Message object · RSS · Daily advice feed · Berg · Berg Little Printer · The Advice Slip JSON API is provided for free.

What Randommer can offer me? Randommer can offer a collection of various tools that can generate online dummy data and JSON REST API to generate and validate data.

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Learn how to use our simplest interface to fetch true random numbers into your mobile app or web app. This is a good section to read, even if you want ultimately to write a more sophisticated client. Prerequisites: Fundamentals, API Keys

Random APIs

All responses come with ID (integer) and UID (string). For example, you can combine our users, stripe and subscription resources to develop and test your membership feature. ... Use size=number to fetch an array of any resource. Use response_type=json to render JSON or response_type=xml to ...

The Random Data API provides users with a variety of random data types, such as random numbers, names, addresses, and more.

Learn how to use our simplest interface to fetch true random numbers into your mobile app or web app. This is a good section to read, even if you want ultimately to write a more sophisticated client. Prerequisites: Fundamentals, API Keys

This also applies to the equivalent method in the Signed API, see Example 7 of the generateSignedIntegers method. The service also advises that no bits were used to satisfy the request, as the values are not generated on-the-fly. It also includes how many bits and requests are left in the client's quota. The following request differs from that in Example 4 only in that the optional pregeneratedRandomization parameter contains an id value instead of a date value. { "jsonrpc": "2.0", "method": "generateIntegers", "params": { "apiKey": "3fcffb4b-62ca-4a5b-b25e-05e27d909182", "n": 3, "min": 1, "max": 6, "replacement": true, "base": 10, "pregeneratedRandomization": { "id": "foobar" } }, "id": 12691 }

fetch('https://dummyjson.com/todos/random') .then(res => res.json()) .then(console.log); Show Output · { // random result, will be changed on every call to /random "id": 127, "todo": "Prepare a dish from a foreign culture", "completed": false, "userId": 7 } Limit and skip todos ·

Fetch fresh, randomized data instantly, ensuring your tests cover a broad spectrum of real-world scenarios · With our straightforward API, integrating dynamic data into your projects is a breeze, saving you time and hassle

Returns random item from passed arguments list.

Random Data Generator REST API produces fictional - yet realistic - personal data on demand. Returned data is always random within its class. The API supports a variety of services: locations, names, dates, numbers, social security numbers, ...