Authenticate using HTTP Basic Authentication


For security reasons we recommend authentication using OAuth 2.0. Learn about OAuth 2.0

For HTTP basic authentication, each request must include an Authentication header, with a base-64 encoded value.

Your authentication token is of the format:

siteName + '\' + username + ':' + password

Where siteName is the company name you use to log in to Eloqua, and username and password are your Eloqua username and password.

For example, for a user whose company name is "COMPANYX", username is "user1", and password is "password123", the base string is:


Running base-64 encoding on that string gives the token for the Authentication header: Q09NUEFOWVhcdXNlcjE6cGFzc3dvcmQxMjM=

The authentication header would then be:

Authorization: Basic Q09NUEFOWVhcdXNlcjE6cGFzc3dvcmQxMjM=

See Sending Requests for a video demonstration on how to use HTTP Basic Authentication.


The base URL used to access the Eloqua API is no longer static. Learn more about Determining base URLs.