> For the complete documentation index, see [llms.txt](https://docs.orb360.tech/dam/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.orb360.tech/dam/api-ref/authentication.md).

# Authentication

There are two ways to authenticate with this API:

* with your unique User ID and API Secret Key in the Authorization request header field.
* with an OAuth2 Access Token in the Authorization request header field (which uses the Bearer authentication scheme to transmit the Access Token).

Each endpoint supports either option.

### bearer

In this case, you have to send a valid Access Token (as a JWT Token) in the Authorization header, using the Bearer authentication scheme.

e.g. `Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdW...`

### api\_key

Provide your API key in the `Authorization` header. In this case, you have to send your User ID and API Secret Key information in the Authorization header, concatenating the two values with a colon : You can obtain your full API Key from the My Account page after you have logged in.

e.g. `Authorization: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx:xxxxxxxxxxxxxxx...`