Application Programming Interface or API is a software interface that allows two applications to interact with each other without any user intervention. API is a collection of software functions and procedures. In simple terms, API means a software code that can be accessed or executed. APIs are most commonly used to connect apps on your website or in a mobile app.

For example, if you are building an app for your business, it could use an API to connect to your CRM tool and retrieve all the contacts in the system.

An API is not just a set of scripts or a library of code, but it is also a way to connect two different software systems together so that they can work together.

API Testing Tools

There are some API testing tools that a developer can use to check their API response

• Postman: It is both a plugin in Google Chrome and installable software for macOS, Windows and Linux that can be used for testing API services. It is a powerful HTTP client to check web services.

• Ping API: It is an API testing tool that allows the developer to write test scripts in JavaScript and CoffeeScript to test their APIs. It will enable inspecting the HTTP API call with complete request and response data.

Here are some APIs you can play with

1. Spotify API

2. Weather API

3. YouTube API

4. Stock Chart API

5. Jokes API

If you want to find more interesting APIs to use in your projects, Public APIs are the best repository for that.

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