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POST
Create Or Update Steam

Authorizations

X-EntityToken
string
header
required

This API requires an Entity Session Token, available from the Entity GetEntityToken method.

Body

application/json
ApplicationId
string
required

Application ID obtained after setting up your app in Valve's developer portal.

SecretKey
string
required

Sercet Key obtained after setting up your app in Valve's developer portal.

CustomTags
object

The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.).

EnforceServiceSpecificTickets
boolean

Enforce usage of AzurePlayFab identity in user authentication tickets.

Entity
object

The optional entity to perform this action on. Defaults to the currently logged in entity.

ErrorIfExists
boolean

If an error should be returned if the addon already exists.

UseSandbox
boolean

Use Steam Payments sandbox endpoint for test transactions.

Response

code
integer

The Http status code. If X-ReportErrorAsSuccess header is set to true, this will report the actual http error code.

status
string

The Http status code as a string.

data
object
Last modified on October 2, 2026