What is API: Definition, Specifications, Types, Documentation

What is API: Definition, Specifications, Types, Documentation

Maybe you want all your drivers to record their mileage and gasoline costs in a certain way. Again, your developers could potentially use the Google Maps API to create an internal phone app that lets drivers easily track how many miles they travel each day. It allows the client to detail the exact data it needs and simplifies data aggregation from multiple sources, so the developer can use one API call to request all needed data.

A webhook is an HTTP-based callback function that allows lightweight, event-driven communication between 2 APIs. Webhooks are used by a wide variety of web apps to receive small amounts of data from other apps, but webhooks can also be used to trigger api explanation automation workflows in GitOps environments. This can provide additional revenue streams without compromising quality. Authentication tokens check that the users are who they claim to be and that they have access rights for that particular API call.

API publishing and management

APIs are an accessible way to extract and share data within and across organizations. Microservices is an architectural style that divides an application into smaller, independent components (also called microservices), connected using REST APIs. In basic terms, APIs are a set of functions and procedures that allow for the creation of applications.

api definition

API is an abbreviation for Application Programming Interface which is a collection of communication protocols and subroutines used by various programs to communicate between them. A programmer can make use of various API tools to make their program easier and simpler. Also, an API facilitates programmers with an efficient way to develop their software programs. Thus in simpler terms, an API helps two programs or applications to communicate with each other by providing them with the necessary tools and functions. It takes the request from the user and sends it to the service provider and then again sends the result generated from the service provider to the desired user. An API, or application programming interface, is a set of defined rules that enable different applications to communicate with each other.

Phase 4: APIs for mobile applications

The usefulness of the World Wide Web and its possibilities were well known at the beginning of the internet era. Hence, companies started transforming the method of providing products and services in a virtual store. The purpose ranges from simply sending a message to checking cricket scores online. Application Programming Interface (API) is used to communicate between apps and to access and fetch the required information. It offers products or services to communicate with other products and services without having to know how they’re implemented. After understanding these concepts, you can try working on them by implementing some of the concepts in projects.

These APIs have provided everything from new internet features that browse the sites of other services, to mobile device apps that offer easy access to web application resources. New features, such as content delivery, augmented reality and novel applications of wearable technology, are created in large part though these APIs. API stands for application programming interface, which is a set of definitions and protocols for building and integrating application software. An API is an intermediate software agent that allows dependent applications to communicate with each other. APIs provide a set of protocols, routines, and developer tools enabling software developers to extract and share information and let applications interact in an accessible manner.

An authorization framework like OAuth 2.0 (link resides outside ibm.com) can help limit the privileges of third-party applications. Using a timestamp in the HTTP header, an API can also reject any request that arrives after a certain time period. Parameter validation and JSON Web Tokens are other ways to ensure that only authorized clients can access the API. SOAP requires less low-level infrastructure-related code than REST.

api definition

For instance, Facebook launched version 1.0 of its API in August of 2006, which allowed developers to access Facebook users’ friends, photos, events, and profile information. This API played a crucial role in establishing Facebook as one of the most popular social networks in the world. This means you and your customers can power digital apps and spur innovation in real time. As the use of web APIs has increased, certain protocols have been developed to provide users with a set of defined rules, or API specifications, that create accepted data types, commands and syntax. In effect, these API protocols facilitate standardized information exchange.

Remote APIs define standards of interaction for applications running on different machines. In other words, one software product accesses resources located outside the device that requests them, which explains the name. Since two remotely located applications are connected over a communications network, particularly the internet, most remote APIs are written based on web standards. Java Database Connectivity API and Java Remote Method Invocation API are two examples of remote application programming interfaces. Resources are the information that different applications provide to their clients. Resources can be images, videos, text, numbers, or any type of data.

  • They also prevent developers from having to “reinvent the wheel” and spend time creating functionality that already exists.
  • APIs also must be tested in their published form to ensure that they can be accessed properly.
  • For example, when your car’s navigation system uses Google Maps to direct you to the airport, that’s an API.
  • Where some APIs are open source, web services are typically private and only approved partners may access them.
  • A program or a programmer that uses one of these parts is said to call that portion of the API.
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