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Before you can begin this flow, you will have to collect the user's password in a manner of your choosing.

Once you have collected the credentials, all that is required is a single API call to the /token endpoint:

curl --request POST \
  --url https://${yourOktaDomain}/oauth2/default/v1/token \
  --header 'accept: application/json' \
  --header 'authorization: Basic MG9hYn...' \
  --header 'content-type: application/x-www-form-urlencoded' \
  --data 'grant_type=password&username=testuser1%40example.com&password=%7CmCov
  rlnU9oZU4qWGrhQSM%3Dyd&scope=openid'

Important: The call to the /token endpoint requires authentication. In this case, it is a Basic Auth digest of the Client ID and Secret. You can find the client ID and secret in your application's General tab. For more on Basic Auth, see Client Authentication Methods.

Note the parameters that are being passed:

  • grant_type is password, indicating that we are using the Resource Owner Password grant type.
  • username is the username of a user registered with Okta.
  • password is the password of a user registered with Okta.
  • scope must be at least openid. For more information about this, see the Custom Authorization Server chapter.

For more information on these parameters, see the OAuth 2.0 API reference.

If the credentials are valid, your application will receive back access and ID tokens:

{
    "access_token": "eyJhb[...]56Rg",
    "expires_in": 3600,
    "id_token": "eyJhb[...]yosFQ",
    "scope": "openid",
    "token_type": "Bearer"
}
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