Dart

Auth0 Server-to-Server Access Token (Client Credentials flow)

See more HTTP Examples

Demonstrates how to obtain an Auth0 access token using client credentials (client_id and client_secret).

This is just a matter of duplicating this CURL command:

curl --request POST
  --url 'https://chilkat.auth0.com/oauth/token' \
  --header 'content-type: application/json' \
  --data '{"grant_type":"client_credentials","client_id": "xxxx","client_secret": "xxxx","audience": "https://api.example.com/geocoding/v1/"}'

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // We want to duplicate this curl command:
  // 
  // curl --request POST
  //   --url 'https://chilkat.auth0.com/oauth/token' \
  //   --header 'content-type: application/json' \
  //   --data '{"grant_type":"client_credentials","client_id": "my_client_id","client_secret": "my_client_secret","audience": "https://api.example.com/geocoding/v1/"}'

  // Build the JSON body of the request.
  final json = CkJsonObject();
  json.updateString('grant_type', 'client_credentials');
  json.updateString('client_id', 'AUTH0-CLIENT-ID');
  json.updateString('client_secret', 'AUTH0-CLIENT-SECRET');
  json.updateString('audience', 'https://api.example.com/geocoding/v1/');

  // IMPORTANT: You would use your own url.  You would not use "chilkat.auth0.com".  
  // Instead you would use "your_name.auth0.com"
  final http = CkHttp();
  final resp = CkHttpResponse();
  try {
    http.httpJson('POST', 'https://chilkat.auth0.com/oauth/token', json, 'application/json', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // A 200 response status code indicates success.  In the success case, the response body
  // contains the JSON access token, such as: 
  // {
  //   "access_token": "eyJz93a...k4laUWw",
  //   "token_type":"Bearer",
  //   "expires_in":86400
  // }
  // 

  print('response status code = ${resp.statusCode}');

  // The repsonse is JSON if successful and also JSON for errors.
  final jsonResp = CkJsonObject();
  jsonResp.emitCompact = false;
  jsonResp.load(resp.bodyStr);

  if (resp.statusCode != 200) {
    // The response body contains error information in JSON format.
    print(jsonResp.emit());

    // An example of an error response:
    // 		{
    // 		  "error": "access_denied",
    // 		  "error_description": "Client is not authorized to access \"https://api.example.com/geocoding/v1/\". You might probably want to create a \"client-grant\" associated to this API. See: https://auth0.com/docs/api/v2#!/Client_Grants/post_client_grants"
    // 		}
    return;
  }

  print('Success!');
  print(jsonResp.emit());

  // A successful JSON response body looks like this:

  // {
  //   "access_token": "eyJz93a...k4laUWw",
  //   "token_type":"Bearer",
  //   "expires_in":86400
  // }
}