What is API?

An API (Application Programming Interface) allows you to send requests to a remote data set, like querying a database. The response will then be delivered back to your own application in a standardized format. This is very helpful when you’re building an app or pulling metrics for reporting, because it means you can focus on presenting information in a unique or useful manner, rather than developing the underlying data set. For example, most weather apps get their weather forecast data from a weather API, rather than building weather stations themselves.

Of course, the fastest way to understand how APIs work is to try them out. While most APIs require access via API keys (which are similar to passwords), or have complex methods of authentication and authorization, there are also quite a few APIs with no requirements at all. This is especially useful for beginners, as it means you can start exploring different APIs right away. It is also useful for web developers looking to access a sample data set for their app without any red tape.

Simple of use

Make request and get response

Any platform

You can use any plaform and language

Instant response

Always actual data response

Last API

GrünstromIndex

Green Power Index for Germany (Grünstromindex/GSI)

Auth: ?
HTTPS: no
CORS: yes
https://www.corrently.de/hintergrund/gruenstromindex/index.html
Wikipedia

Mediawiki Encyclopedia

Auth: ?
HTTPS: yes
CORS: unknown
https://www.mediawiki.org/wiki/API:Main_page
Abstract Phone Validation

Validate phone numbers globally

Auth: apiKey
HTTPS: yes
CORS: yes
https://www.abstractapi.com/phone-validation-api
Sport List & Data

List of and resources related to sports

Auth: ?
HTTPS: yes
CORS: yes
https://developers.decathlon.com/products/sports
Openwhyd

Download curated playlists of streaming tracks (YouTube, SoundCloud, etc...)

Auth: ?
HTTPS: yes
CORS: no
https://openwhyd.github.io/openwhyd/API
Launch Library 2

Spaceflight launches and events database

Auth: ?
HTTPS: yes
CORS: yes
https://thespacedevs.com/llapi
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