Test Data – Free-tier APIs
26 Free-tier APIs in the category Test Data. Free public web APIs that developers and AI agents can call. Entries come from the open public-apis list; each link was checked automatically (HTTP status) on the date shown, which says the site responded, not that the API is good.
Bacon Ipsum
A Meatier Lorem Ipsum Generator
Dicebear Avatars
Generate random pixel-art avatars
DummyJSON
Fake REST API with products, users, posts, comments, todos and more
English Random Words
Generate English Random Words with Pronunciation
FakeJSON
Service to generate test and fake data
FakeStoreAPI
Fake store rest API for your e-commerce or shopping website prototype
flaky
Fake REST API with chaos controls: force any status code, add latency, or a failure rate
GeneradorDNI
Data generator API. Profiles, vehicles, banks and cards, etc
ItsThisForThat
Generate Random startup ideas
JsonFabrica
Generate realistic relational synthetic JSON test data from reusable templates
loremfile
Hotlinkable CC0 sample files in 78 formats, each with a SHA-256 in a JSON manifest
Mailsac
Disposable Email
Mockaroo
Generate fake data to JSON, CSV, TXT, SQL and XML
NovaFortix Dev
Zero-auth REST endpoints for mock user profiles, UUIDs and HTTP status codes
Randommer
Random data generator
RandomUser
Generates and list user data
restful-api
Fake REST API for testing and prototyping with CRUD endpoints
RoboHash
Generate random robot/alien avatars
Sampuli
Format-true synthetic test data for 90 countries: IDs, IBANs, cards, addresses
Supercrontab Mock Endpoints
Mock endpoints in 8 formats, each returning any of 14 HTTP status codes
TestingAPIs
Free fake REST API with products, posts, todos, any HTTP status code and request echo
This Person Does not Exist
Generates real-life faces of people who do not exist
TotalShiftLeft Sandbox
Free multi-protocol sandbox: REST, GraphQL & SOAP with OAuth2/JWT auth and OpenAPI 3.0 spec
UUID Generator
Generate UUIDs
Waldrand Avatar
Deterministic SVG/PNG/WebP avatars from any string, four styles
Yes No
Generate yes or no randomly