We support the following authentication methods:

  • OAuth 2.0 (highly preferred)
  • API Key
  • Username/Password (less preferred)

We'll also send a User-Agent header of "Interseller-Sync/1.0" and only JSON payloads.


Interseller stores all OAuth tokens and API keys with a multitude of encryption methods. For example, our database is encrypted at rest and in-transit, we utilize field-level encryption using hardware security modules, and all servers are role restricted for least-privilege access.

If you require IP whitelisting, please add the following IP addresses: