To communicate with the Thredd Cards API, you must include the correct headers in each API request.

Request Headers

The following headers must be included in requests made to the core API:

Name	Description	Value
`Authorization`	OAuth Credentials to authenticate your request	Your OAuth Token
'Content-Type'	The media type of the requested resource	`application/x-www-form-urlencoded`

Pagination Headers

For some endpoints - such as the List card transaction(s) endpoint you can pass pagination values:

Name	Description	Value
`dateFrom`	The date from which you want your data to start from	Format = YYYYMMDD* e.g. 20200930
`dateTo`	The date from which you want your data to end on	Format = YYYYMMDD* e.g. 20210930