Visual Basic 6.0

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

Visual Basic 6.0

Dim success As Long
success = 0

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

Dim http As New ChilkatHttp

' 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'

http.Login = "client_id"
http.Password = "client_secret"

Dim req As New ChilkatHttpRequest
req.HttpVerb = "POST"
req.Path = "/oauth2/default/v1/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","client_credentials"
req.AddParam "scope","customScope"

req.AddHeader "accept","application/json"

Dim resp As New ChilkatHttpResponse
success = http.HttpReq("https://{yourOktaDomain}/oauth2/default/v1/token",req,resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim sbResponseBody As New ChilkatStringBuilder
success = resp.GetBodySb(sbResponseBody)
Dim jResp As New ChilkatJsonObject
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = 0

Debug.Print "Response Body:"
Debug.Print jResp.Emit()

Dim respStatusCode As Long
respStatusCode = resp.StatusCode
Debug.Print "Response Status Code = " & respStatusCode
If (respStatusCode >= 400) Then
    Debug.Print "Response Header:"
    Debug.Print resp.Header
    Debug.Print "Failed."
    Exit Sub
End If

' 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

Dim access_token As String
access_token = jResp.StringOf("access_token")
Dim token_type As String
token_type = jResp.StringOf("token_type")
Dim expires_in As Long
expires_in = jResp.IntOf("expires_in")
Dim scope As String
scope = jResp.StringOf("scope")