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Okta Client Credentials FLow

See more Okta OAuth/OIDC Examples

The Client Credentials flow is recommended for use in machine-to-machine authentication. Your application will need to securely store its Client ID and Secret and pass those to Okta in exchange for an access token. At a high-level, the flow only has two steps:

• Your application passes its client credentials to your Okta authorization server.
• If the credentials are accurate, Okta responds with an access token.

Note: This example uses "customScope". You'll replace it with whatever scope(s) you've defined for your app. Scopes are defined in your Authorization Server. See Okta Authorization Server / Scopes

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Local $bSuccess = False

; This example assumes the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oHttp = ObjCreate("Chilkat.Http")

; Implements the following CURL command:

; curl --request POST \
;   --url https://{yourOktaDomain}/oauth2/default/v1/token \
;   --header 'accept: application/json' \
;   --user "client_id:client_secret" \
;   --header 'cache-control: no-cache' \
;   --header 'content-type: application/x-www-form-urlencoded' \
;   --data 'grant_type=client_credentials&scope=customScope'

$oHttp.Login = "client_id"
$oHttp.Password = "client_secret"

$oReq = ObjCreate("Chilkat.HttpRequest")
$oReq.HttpVerb = "POST"
$oReq.Path = "/oauth2/default/v1/token"
$oReq.ContentType = "application/x-www-form-urlencoded"
$oReq.AddParam "grant_type","client_credentials"
$oReq.AddParam "scope","customScope"

$oReq.AddHeader "accept","application/json"

$oResp = ObjCreate("Chilkat.HttpResponse")
$bSuccess = $oHttp.HttpReq("https://{yourOktaDomain}/oauth2/default/v1/token",$oReq,$oResp)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

$oSbResponseBody = ObjCreate("Chilkat.StringBuilder")
$oResp.GetBodySb($oSbResponseBody)
$oJResp = ObjCreate("Chilkat.JsonObject")
$oJResp.LoadSb($oSbResponseBody)
$oJResp.EmitCompact = False

ConsoleWrite("Response Body:" & @CRLF)
ConsoleWrite($oJResp.Emit() & @CRLF)

Local $iRespStatusCode = $oResp.StatusCode
ConsoleWrite("Response Status Code = " & $iRespStatusCode & @CRLF)
If ($iRespStatusCode >= 400) Then
    ConsoleWrite("Response Header:" & @CRLF)
    ConsoleWrite($oResp.Header & @CRLF)
    ConsoleWrite("Failed." & @CRLF)
    Exit
EndIf

; Sample JSON response:
; (Sample code for parsing the JSON response is shown below)

; {
;   "access_token": "eyJraWQiO ... B2CnCLj7GRUW3mQ",
;   "token_type": "Bearer",
;   "expires_in": 3600,
;   "scope": "customScope"
; }

; Sample code for parsing the JSON response...
; Use the following online tool to generate parsing code from sample JSON:
; Generate Parsing Code from JSON

Local $sAccess_token = $oJResp.StringOf("access_token")
Local $sToken_type = $oJResp.StringOf("token_type")
Local $iExpires_in = $oJResp.IntOf("expires_in")
Local $scope = $oJResp.StringOf("scope")