API Walkthrough

Thanks for taking an interest in using the OpenCorporates API. The OpenCorporates API is RESTful interface that uses an api token embedded in the request (either as a parameter or a Header token) in order to authenticate and authorise the request against your API account.

Explore the API

We have put together a set of tutorials/walkthrough on how to use our API to start finding the data you need. We have included basic cURL commands as well as NodeJS code that walks you through step by step how to connect, how to search and how to interpret both the API and the data:

Setup & Configuration

• API Authentication & Authorisation

Explore the Data

Here are the data dictionaries for our core company and officers objects.

• Data Dictionary: Companies
• Data Dictionary: Officers