diff --git a/deepomatic/api/client.py b/deepomatic/api/client.py
index e099eb8..b3bc902 100644
--- a/deepomatic/api/client.py
+++ b/deepomatic/api/client.py
@@ -28,16 +28,43 @@
 from deepomatic.api.resources.task import Task
 from deepomatic.api.resources.account import Account
 
-###############################################################################
-
-API_VERSION = 0.7
-
-###############################################################################
 
 class Client(object):
 
-    def __init__(self, app_id=None, api_key=None, verify_ssl=None, check_query_parameters=True, host=None, version=API_VERSION, user_agent_suffix='', pool_maxsize=20):
-        self.http_helper = HTTPHelper(app_id, api_key, verify_ssl, host, version, check_query_parameters, user_agent_suffix, pool_maxsize)
+    def __init__(self, *args, **kwargs):
+        """
+           Constructs a Client to send requests to the Deepomatic API.
+
+           :param app_id: App ID for authentication. Defaults to `None`.
+               If `None`, try to retrieve it from the `DEEPOMATIC_APP_ID` environment variable.
+               If it fails raise a `DeepomaticException`.
+           :type app_id: string
+           :param api_key: API key for authentication. Defaults to `None`.
+               If `None` try to retrieve it from the `DEEPOMATIC_API_KEY` environment variable.
+               If it fails raise a `DeepomaticException`.
+           :type api_key: string
+           :param verify_ssl (optional): whether to ask `requests` to verify the TLS/SSL certificates.
+               Defaults to `None`. 
+               If `None` try to get it from the `DEEPOMATIC_API_VERIFY_TLS` environment variable (`0`: False, `1`: True).
+               If not found it is set to True.
+           :type verify_ssl: bool
+           :param host (optional): API root URL.
+           :type host: string
+           :param version (optional): API version.
+           :type version: string
+           :param user_agent_prefix (optional): Prefix the HTTP User-Agent.
+               It is recommended to declare your client via this parameter. Example: 'my-app/1.0.0'.
+           :type user_agent_prefix: string
+           :param user_agent_suffix (optional): Suffix the HTTP User-Agent.
+           :type user_agent_suffix: string
+           :param pool_maxsize (optional): Set `requests.adapters.HTTPAdapter.pool_maxsize` for concurrent calls.
+               Defaults to 20.
+           :type pool_maxsize: int
+
+           :return: :class:`Client` object
+           :rtype: deepomatic.api.client.Client
+        """
+        self.http_helper = HTTPHelper(*args, **kwargs)
 
         # /accounts
 
diff --git a/deepomatic/api/http_helper.py b/deepomatic/api/http_helper.py
index c5eb62c..69a7925 100644
--- a/deepomatic/api/http_helper.py
+++ b/deepomatic/api/http_helper.py
@@ -31,21 +31,22 @@
 from six import string_types
 
 from deepomatic.api.exceptions import DeepomaticException, BadStatus
-from deepomatic.api.version import __version__
+from deepomatic.api.version import __title__, __version__
 
 API_HOST = 'https://api.deepomatic.com'
+API_VERSION = 0.7
 
 ###############################################################################
 
 
 class HTTPHelper(object):
-    def __init__(self, app_id, api_key, verify, host, version, check_query_parameters, user_agent_suffix='', pool_maxsize=20):
+    def __init__(self, app_id=None, api_key=None, verify_ssl=None, host=None, version=API_VERSION, check_query_parameters=True, user_agent_prefix='', user_agent_suffix='', pool_maxsize=20):
         """
         Init the HTTP helper with API key and secret
         """
         if host is None:
             host = os.getenv('DEEPOMATIC_API_URL', API_HOST)
-        if verify is None:
+        if verify_ssl is None:
             verify = os.getenv('DEEPOMATIC_API_VERIFY_TLS', '1') == '0'
         if app_id is None:
             app_id = os.getenv('DEEPOMATIC_APP_ID')
@@ -65,14 +66,21 @@ def __init__(self, app_id, api_key, verify, host, version, check_query_parameter
         python_version = "{0}.{1}.{2}".format(sys.version_info.major, sys.version_info.minor, sys.version_info.micro)
 
         user_agent_params = {
+            'package_title': __title__,
             'package_version': __version__,
             'requests_version': requests.__version__,
             'python_version': python_version,
             'platform': platform.platform()
         }
 
-        self.user_agent = 'deepomatic-api/{package_version} requests/{requests_version} python/{python_version} platform/{platform}\
+        if user_agent_prefix:
+            self.user_agent = user_agent_prefix + ' '
+        else:
+            self.user_agent = ''
+
+        self.user_agent += '{package_title}/{package_version} requests/{requests_version} python/{python_version} platform/{platform}\
             '.format(**user_agent_params)
+
         if user_agent_suffix:
             self.user_agent += ' ' + user_agent_suffix
 
@@ -81,6 +89,8 @@ def __init__(self, app_id, api_key, verify, host, version, check_query_parameter
         self.verify = verify
         self.host = host
         self.resource_prefix = host + version
+
+        # This is only used in mixins, this should not stay here
         self.check_query_parameters = check_query_parameters
 
         headers = {