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# GSO API Certified

easypost

September 29, 2014

1 min read

We’re proud to announce our recent certification with the GSO API. GSO is a major West Coast carrier that many of our high volume customers rely upon. EasyPost is the first and only RESTful JSON API to be GSO certified.

You can access all GSO functionality through the EasyPost Shipping API. Just like with all the carriers we support, the steps are as follows:

1. [Log in to your EasyPost account](/content/login/index.html)
2. [Go to your Carriers page and enable GSO.](/content/account/carriers/index.html) After that you’ll input your GSO account info.
3. [Get started!](/content/getting-started/index.html) The GSO API is integrated in EasyPost, the integration steps are the same as any other carriers.

As always, [email us](mailto:support@easypost.com?subject=GSO%20API%20Certified) if you have any questions or difficulty getting started.