For those who are new developers, you may not know a lot about application programming interfaces (APIs). However, it is likely that you’ve used them before as a consumer or an end user, whether purchasing online, using business communication software to reach colleagues or sharing images from a monogram logo maker on social media platforms, for example. It makes knowing about them helpful, regardless of if you plan to make and use one yourself or want to understand how the tools you use work.
Although coding and developer tools can be daunting for the outside world, we’ll put APIs into a language that new developers (and even non-developers) can understand. In this guide, we’ll cover what APIs are and the different types that exist. You’ll also learn how they work and how you can use them. By the end, hopefully, you’ll be more comfortable with APIs and know how they impact you and your business.
What Is an API?
An application programming interface is a piece of coding used by developers to communicate between different devices, systems, or applications. It allows information to be passed on—allowing procedures to be followed across multiple platforms. Depending on the API, this could be transferring data, images, videos, text, files and other content, or allowing developers to connect through the use of backend-as-a-service (BaaS) to link their apps to the cloud. APIs are often used in a business context and for personal projects or other purposes.
Generally, APIs are concerned with the raw information and passing this on to another program rather than the appearance or visual side of these applications. Another set of coding is used instead to build the aesthetic and usability of the interface, while the API tends to be less visible to users. Nonetheless, they form an essential part of our technology stack today, allowing systems to integrate and become more agile, making applications easier for users to navigate.
Image sourced from developers.facebook.com
For example, when you refresh your omnichannel communications application, a request is sent to the API to check other linked programs for new messages on your social platforms or calls to your 800 numbers for business. These programs inform the API of new communications and send the appropriate data across. The API returns this data to the application you are using, enabling you to read the messages from here or notify you of no new calls.
Types of API
1. Private
A private API is used internally within a team, created by developers who work for the company or organization. It can help make highly personalized APIs for the needs of your business and adapt the API as and when needed. Private APIs can’t be used or worked on by external developers, as it is purely for your in-house team. These APIs tend to focus on aiding your company’s productivity and project management across multiple applications.
2. Partner
Alternatively, partner APIs are used externally with companies that your business collaborates with. Often, this transfers information between businesses, such as within an affiliate scheme or for external postage of online orders. However, APIs can also share and update files such as your release of liability contract or emergency procedure templates. Developers from both companies can improve the API system to effectively share data between partners.
3. Open/Public
Because they are not restricted to usage by specific businesses, open APIs (also known as public APIs) can be used by anyone. You may need a subscription to give you access to the API depending on how frequently you use it, although there are other APIs that are completely free to use. Once you’ve sorted out your access, any software developer can use the API to make changes and transfer information more easily between various software for several purposes.
Image sourced from mailchimp.com
4. Composite
By taking the responses of multiple programs and streamlining these onto one platform, composite APIs are essential for business and personal use. Or, vice versa, a composite API allows you to make requests of multiple platforms simultaneously. It is helpful for omnichannel management, tracking customer interactions, online faxing and purchases across various platforms. These tend to require little input from developers and are set up for anyone to use.
How to Use an API
Choose Your API
As you may have gathered, APIs can be used for several purposes. When choosing your API, look for something relevant to the business that helps you complete the tasks you already do. The software and tools you use may have recommended APIs to try, or there may be APIs that similar businesses use. Do your research to ensure your API performs the right functions and works with your rephrasing tool, calendar software or other add-ons you use.
If you’re getting used to APIs, you may want to start with a free option. It means that if it doesn’t work as you hoped, you’ve not lost anything by trying. Many APIs have a free trial period or a free subscription tier with the basic functions, so you can get a feel for the API and decide if it works for your business. When you’re confident in your choice, you can invest in the other subscription tiers that tend to allow for additional users and added functionality.
Find Your API Key
An API key identifies you as the user, authenticating your actions using the API and tracking your usage. It is crucial to have, particularly with subscription-based APIs, as without it you may not be able to perform certain actions, or your users of the API may be limited. Even if your API of choice is free to use and publicly accessible, there still may be an API key to keep your information and preferences stored and linked between your platforms.
Image sourced from developers.google.com
Your API key may be issued as you sign up for the service, so remember this and ensure those in your business who need it can access it. Otherwise, you may need to request or pay for an API key, although this should be clear when you sign up for your chosen API. To increase your API security and avoid your preferences being altered, keep your API key private and limit who has access to it. If your account is hacked, you may need to request a new API key.
Read the Instructions
It can be easy to overlook the documentation and instructions an API comes with, assuming you’ll get the gist through practicing and by actually using it. Although this may be true to an extent, you could be missing out on useful functions or not using the API as effectively as possible. Likewise, you could get yourself into a mess, not properly setting resource requests and limits, leading to more issues for your business when using the API in the future.
Set aside time to read the instructions and documents for your API or divide the workload between your management team. You may discover it comes with setup instructions or useful tutorials you can use with the rest of your teams. As you introduce more people to the API, the instructions ensure everyone uses it in the same way. It prevents confusion for your teams and enables them to build their confidence with the API more quickly.
Set Up Your Requests
Depending on the API, there may be suggested requests for you to set up or you may have to create and code your own. Following the instructions from your API can help with this, allowing your in-house developers to reach their full potential within the API and informing you of the coding structure to use. Nonetheless, there are plenty of tutorials online covering how to set up your API requests without relying on coding expertise.
Image sourced from developer.paypal.com
Just because a request is possible doesn’t mean it’s always relevant to your business. Consider why you’re using an API and what you want it to do once you’ve set up your requests. If you’re new to using APIs, start with a few basic requests and build on these as you gain confidence and experience, using CI/CD best practices to ensure it runs well. It allows you to become familiar with using each request and ensure it works in the way that you intended it.
Are You Ready to Use APIs?
As technology progresses and software is developed, having APIs in place is becoming more helpful. Being able to communicate between applications can streamline your virtual receptionist service, incoming video calls and outgoing messages, for example, as well as accelerate cloud-native application development. Having one place to make your requests and display information from multiple platforms gives you more control in managing your tasks.
If you’re still new to APIs, you don’t have to start using them for everything immediately. Take your time learning to use them for specific functions, getting familiar with them, and enabling your teams to adjust to using them. From this foundation, add new APIs or requests as they’re needed, personalizing them to your business and the tasks you complete. Over time, you’ll gain confidence in using APIs and build a strong network of requests to run your business effectively.
