Five Useful APIs for Startups



You don’t need to be a computer scientist to create software. You can use APIs (application programming interfaces) that other people have already built so that they’ll do much of the work for you! Here are five helpful APIs for startups:


Twilio is a cloud communications platform that allows developers to build, deploy and manage APIs. The company’s API-based services include SMS messaging, voice over IP (VoIP), video calls, and presence detection. Twilio also offers a suite of tools for its users to build their applications.

The New York City-based startup has raised $250 million in funding since being founded by Russian developer Eran Hammer in 2008, including $100 million from Naspers last year. Twilio customers include Uber, Airbnb, and Salesforce; the company has more than 10 million registered developers on its platform.


Stripe is the go-to API for payments. It allows businesses to accept credit card payments without needing a merchant account, meaning you can get started quickly and easily. Stripe also has a fantastic developer community, with thousands of developers contributing to the platform and helping each other with advice and best practices.

Stripe’s extensive documentation covers everything from basic setup to advanced features like error handling and testing your integration against actual data. Their support articles include numerous examples that help you understand how things work within Stripe, so it’s easy to see how different states are handled in various scenarios.


SendGrid is a cloud-based email delivery platform and one of the top email service providers in the industry. The company prides itself on its developer-friendly APIs, which allow developers to integrate SendGrid’s services with their applications. With an API, you can do everything from sending an email to creating campaigns and managing lists.

SendGrid’s REST API is used by many large companies, including Netflix and Uber. A REST API is one of the easiest ways for developers to interact with your product or service because it allows you to use HTTP requests (similar to how you navigate web pages). Any software engineer can start building applications quickly without any training or knowledge about your technology stack!

If you want more information about setting up an account with Sendgrid or using their API specifically, check out their documentation here:


Vatcheckapi is a nifty tool that helps startups to solve a bureaucratic hurdle: validating companies’ tax numbers. The API allows you to automate this process fully. The API is free to use and integrates easily into any accounting software.

Google Analytics

Google Analytics is a free web analytics tool that can help you understand how users interact with your website and get information on the most helpful content. It also provides insight into what marketing campaigns are working and which aren’t. It also provides developers with a REST API that enables them to build custom analytics dashboards! 

Mailchimp API

Mailchimp’s API is one of the most popular options for sending emails, and that’s because it does a lot more than just send emails. Mailchimp also allows you to create lists, campaigns, and templates with their API.

What this means for your startup is that you can integrate your app or website with Mailchimp so that when someone enters their email address, they are automatically added to one of your lists in Mailchimp. You can then use the list data to target them with advertisements later on through email marketing campaigns or social media ads using the other features of Mailchimp.

Twitter API

The Twitter API is a set of application programming interfaces (APIs) that allow access to the Twitter social network. Building an application that uses the Twitter API will enable developers to read, search, and interact with tweets by users of other applications. For example, you can build an app that displays your friends’ latest updates in real-time or lets you search for tweets that contain specific keywords.

There are three main parts of the Twitter API: Trends and Search APIs; Streaming APIs; Account Activity APIs

Startups can use APIs to do much of the work for them.

APIs, or application programming interfaces, are an excellent way for startups to get a head start. They provide ready-made solutions that save time and money, making it possible for you to focus on your core product.

APIs can help you do much of the work for you. You can use them to integrate with other services or utilize their features without hiring developers. A good example is Stripe’s API, which allows startups to easily accept payments from customers without having any technical experience in web development or programming languages like PHP or Ruby on Rails—a huge advantage when you’re just starting!


If you’re a startup founder, don’t build something that someone else has already built. Use an API and let it do the hard work for you. You don’t need to reinvent the wheel every time, just find out what works best for your company and use it!


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