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Top 5 Company Information APIs

Let’s face it. There’s not a lot of information you can get from just an email address or a phone number. To build a better prospect list or tailor that first outreach email, a little context can go a long way.

Source: GIPHY

That’s why we’ve compiled this list of some of the top company information APIs. Read on!

Fill in Company Blanks with Clearbit



Whether you need a company’s logo, size, location or employee information (social media and email), Clearbit is probably the most extensive API. The most popular use cases are employee and company data, but you can also add autocomplete functionality.

The API is paid (minus the company logo endpoint!), so you will need to register for an API key. After you have the key, connect to the RapidAPI SDK to run calls in browser and connect to multiple APIs with one endpoint.

Get Social Media Context with the FullContact Person API


A name or an email address isn’t always enough to start a conversation. FullContact’s Person API gives better context to email addresses and phone numbers by providing names, job titles and even social media profiles. The most common use cases are sales prospecting and customer research.

Register for a free or paid plan on their website, then connect to the FullContact Person API through your RapidAPI SDK.

Pull Demographic and Financial Context with the DataFinder API 

The DataFinder API best use case is  fleshing out an existing customer database. Let’s say you have a list of names and mailing addresses. DataFinder can help determine email addresses and phone numbers for those contacts.

While that functionality is useful, the real differentiator is the access to demographic data. The demographic endpoint returns in-depth demographic data, including net worth, education and age. Analyze your existing customers with this API to build a more robust buyer profile.


The Zip codes and Zip+4 endpoints locate the areas where these demographic traits are in high density. For example, you a learn best customers tend to be married females between the ages of 45-54 with no children and an average household of $100,000, DataFinder allows you to easily determine which Zip Codes and/or Zip+4 are the best target for your marketing efforts (or a location for a new business branch).

The DataFinder API is more robust and requires a paid subscription to access. Subscribe to a pricing plan to use the API through RapidAPI.

Dig Deeper into UK and EU Company Data with CompanyCheck




We haven’t forgot about our neighbors across the pond! The CompanyCheck API provides a deep dive on companies in the UK and across Europe. How deep a dive? You can access directors and even credit reports in companies across Europe. That means your sales team can determine which companies are a good fit and exactly who to talk to close the deal.

The CompanyCheck provides a limited free tier and multiple paid tiers with a Mashape key on RapidAPI. Subscribe to a plan today to test it for yourself.

Get Email Addresses with Email Finder

Sometimes, all you need is an email address. The Email Finder API helps you do just that. Just add a domain, first and last name to find the email address of the contact at the company.

The Email Finder API has a limited free testing tier and paid plans that you can access with a Mashape key on RapidAPI. Enroll in a subscription to call the API and incorporate it into your project.


What do you think of our company information APIs? Did we miss any that you use? Let us know in the comments below!


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