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

Telegram MTProto

Read and write Telegram data

Auth: OAuth
HTTPS: yes
CORS: unknown
https://core.telegram.org/api#getting-started
Community Transit

Transitland API

Auth: ?
HTTPS: yes
CORS: unknown
https://github.com/transitland/transitland-datastore/blob/master/README.md#api-endpoints
Transport for Lisbon, Portugal

Data about buses routes, parking and traffic

Auth: apiKey
HTTPS: yes
CORS: unknown
https://emel.city-platform.com/opendata/
24 Pull Requests

Project to promote open source collaboration during December

Auth: ?
HTTPS: yes
CORS: yes
https://24pullrequests.com/api
TinyUID

Shorten long URLs

Auth: ?
HTTPS: yes
CORS: yes
https://tinyuid.com/docs
duma.gov.ru

Russian State Duma Open Data

Auth: apiKey
HTTPS: no
CORS: unknown
http://api.duma.gov.ru
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