Authenticating with OAuth 2.0 Overview

The LinkedIn API uses OAuth 2.0 for user authorization and API authentication. Applications must be authorized and authenticated before they can fetch data from LinkedIn or get access to member data.

Follow one of the two authorization flows in Permissions to get started.

There are several third-party libraries in the open source community that abstract the OAuth 2.0 authentication process in every major programming language.


LinkedIn does not support TLS 1.0. Support for TLS 1.1 has been marked for deprecation starting 02/01/2020. Please use TLS 1.2 when calling LinkedIn APIs. All API requests to must be made over HTTPS. Calls made over HTTP will fail.