Mattermark REST API


The Mattermark REST API allows you to query our expansive dataset of companies. You can access all data available in the Mattermark website interface, as well as the time series data that is used to construct the histograms found on company profile pages. Easily access companies, investors, funding events, and much more.

Since the API is based on REST principles, it’s very easy to write and test applications. You can use your browser to access URLs, and you can use pretty much any HTTP client in any programming language to interact with the API.

Because we love you, we’ve provided you with some easy to get started example code in the dark area along the right hand side of the page. Examples are displayed for use with Curl and Ruby! (You can switch the programming language of the examples with the tabs in the top right.)

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Base URL

All URLs referenced in the documentation have the following base:


The Mattermark API is served over HTTPS. To ensure data privacy, unencrypted HTTP is not supported.


Throughtout this document we provide you with inline examples of how to perform the requests to our api.

The curl examples should work on most modern operating systems. Mac and Linux users typically have cURL pre-installed for them. Windows users will likely need to follow the cURL install instructions.

Trial Access

When you are trying out the Mattermark API, you will have access to a test version which will provide you with up to 50 results, please note you will not be able to page through the results. Once your account has been upgraded to full API access you will have the ability to page through all results. Mattermark has data on more than one million companies, but before you have decided to become a paying customer we limit your access.

Sign Up Here For API Access