diff --git a/README.md b/README.md
index ab05e26..256a9a8 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Hydrawise official site: https://hydrawise.com<br/>
 Source code documentation: https://hydrawiser.readthedocs.io<br/>
 Python Package Index: https://pypi.org/project/Hydrawiser/
 
-## Usage
+## Usage API v1
 ```python
 from hydrawiser.core import Hydrawiser
 
@@ -74,7 +74,30 @@ True
 hw.time_remaining(3)
 247
 ```
+### Limitations
 
-## Limitations
+  - Only one controller is supported
+  - No sensor data
+
+
+## Hydrawise GraphQL API (v2)
+
+```python
+
+from hydrawiser.core_v2 import HydrawiserV2
+
+hw = HydrawiserV2('<you email>', '<your hydrawise password>')
+
+# Information about your account
+hw.customer()
+
+# List all controllers
+hw.controllers()
+
+# List all controllers and their sensors
+hw.sensors()
+
+# List all controllers and their zones
+hw.zones()
+```
 
-* Only one controller is supported
diff --git a/hydrawiser/__init__.py b/hydrawiser/__init__.py
index c93873e..08edf25 100644
--- a/hydrawiser/__init__.py
+++ b/hydrawiser/__init__.py
@@ -6,6 +6,6 @@
 """
 
 __author__ = 'David Ryan'
-__version__ = '0.2'
+__version__ = '0.3.0'
 __copyright__ = 'Copyright (c) 2020 David Ryan'
 __license__ = 'MIT'
diff --git a/hydrawiser/core_v2.py b/hydrawiser/core_v2.py
new file mode 100644
index 0000000..a38589a
--- /dev/null
+++ b/hydrawiser/core_v2.py
@@ -0,0 +1,217 @@
+"""
+A GraphQL (API v2) implementation
+"""
+
+from gql import Client, gql
+from gql.transport.requests import RequestsHTTPTransport
+import requests
+
+
+class HydrawiserV2():
+    """
+    :param email: E-mail used during Hydrawise account registration
+    :type email: string
+    :param password: Hydrawise account password
+    :type password: string
+    :param timeout: Requests timeout in seconds
+    :type timeout: int
+    :returns: Hydrawiser object.
+    :rtype: object
+    """
+    CLIENT_ID = 'hydrawise_app'
+    CLIENT_SECRET = 'zn3CrjglwNV1'
+    TOKEN_ENDPOINT = 'https://app.hydrawise.com/api/v2/oauth/access-token'
+    API_ENDPOINT = 'https://app.hydrawise.com/api/v2/graph'
+
+    def __init__(self, email, password, timeout=10):
+        self.timeout = timeout
+        self._token = self.__fetch_token(email, password)
+        self._client = self.__client(self._token)
+
+    def __fetch_token(self, username, password):
+        """
+        Retrieves OAuth2 token and refresh token
+
+        :param username: E-mail used during Hydrawise account registration
+        :type username: string
+        :param password: Hydrawise account password
+        :type password: string
+
+        :returns: JSON object containing access_token, refresh_token
+        :rtype: JSON
+        """
+
+        payload = {
+            'grant_type': 'password',
+            'client_id': self.CLIENT_ID,
+            'client_secret': self.CLIENT_SECRET,
+            'username': username,
+            'password': password,
+            'scope': 'all',
+        }
+
+        resp = requests.post(
+            self.TOKEN_ENDPOINT,
+            headers={"Content-Type": "application/x-www-form-urlencoded"},
+            data=payload,
+            timeout=self.timeout
+        )
+
+        if resp.status_code != 200:
+            print(resp.json())
+
+        return resp.json()
+
+    def __client(self, token):
+        """
+        Create gql client for communication with remote GraphQL API.
+
+        :returns: GraphQL Client object
+        :rtype: gql.Client
+        """
+
+        headers = {
+            'Authorization': token['token_type'] + ' ' + token['access_token']
+        }
+
+        _transport = RequestsHTTPTransport(
+            url=self.API_ENDPOINT,
+            headers=headers,
+            use_json=True,
+            verify=True,
+            timeout=self.timeout,
+            retries=3,
+        )
+
+        return Client(
+            transport=_transport,
+            fetch_schema_from_transport=True,
+        )
+
+    def customer(self):
+        """
+        Fetches basic information about current user including all registered
+        controllers.
+
+        :returns: Information about current user
+        :rtype: dict
+        """
+
+        query = gql("""{
+          me {
+            id
+            customerId
+            name
+            email
+            customerId
+            validated
+            controllers {
+                id
+                name
+                deviceId
+            }
+          }
+        }
+        """)
+        result = self._client.execute(query)
+        return result['me']
+
+    def controllers(self):
+        """
+        List all registered controllers, their IDs, version and status.
+
+        :returns: Controllers information
+        :rtype: array
+        """
+
+        query = gql("""{
+          me {
+            controllers {
+              id
+              name
+              online
+              deviceId
+              wizardComplete
+              hardware {
+                serialNumber
+                version
+                status
+                installationDate
+              }
+              softwareVersion
+              boc
+              lastAction {
+                value
+                timestamp
+              }
+            }
+          }
+        }
+        """)
+        result = self._client.execute(query)
+        return result['me']['controllers']
+
+    def zones(self, controller_id=None):
+        """
+        List all zones and its controllers, their id and names.
+
+        :returns: Available zones
+        :rtype: array
+        """
+
+        query = gql("""{
+          me {
+            controllers {
+              id
+              name
+              zones {
+                id
+                name
+              }
+            }
+          }
+        }
+        """)
+        result = self._client.execute(query)
+        return result['me']['controllers']
+
+    def sensors(self, controller_id=None):
+        """
+        List all sensors connected to a controller, their id and status
+        information.
+
+        :returns: Sensors list and state.
+        :rtype: array
+        """
+
+        query = gql("""{
+          me {
+            controllers {
+                id
+                name
+                sensors {
+                    id
+                    name
+                    model {
+                      id
+                      name
+                      modeType
+                      active
+                      offLevel
+                      offTimer
+                      delay
+                      divisor
+                      flowRate
+                      customerId
+                      sensorType
+                      category {
+                        name
+                      }
+                    }
+                }
+            }
+          }
+        }
+        """)
+        result = self._client.execute(query)
+        return result['me']['controllers']
diff --git a/requirements.txt b/requirements.txt
index fe3c0af..215b106 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
 requests>=2.18.4
+gql[requests]>=3.0.0
diff --git a/setup.py b/setup.py
index 3e043d9..ef2541d 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 setup(
     name='Hydrawiser',
     packages=['hydrawiser'],
-    version='0.2',
+    version='0.3.0',
     description='A Python library to communicate with Hunter ' +
                 'Wi-Fi irrigation controllers ' +
                 '(https://www.hunter.com) that support the ' +
@@ -14,7 +14,7 @@
     url='https://github.com/ptcryan/hydrawiser',
     license='MIT',
     include_package_data=True,
-    install_requires=['requests>=2.0'],
+    install_requires=['requests>=2.0', 'gql[requests]>=3.0.0', ],
     platforms='any',
     test_suite='tests',
     keywords=[
diff --git a/tests/fixtures/oauth2_resp.json b/tests/fixtures/oauth2_resp.json
new file mode 100644
index 0000000..a86601b
--- /dev/null
+++ b/tests/fixtures/oauth2_resp.json
@@ -0,0 +1 @@
+{"token_type": "Bearer", "expires_in": 3600, "access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImp0aSI6ImEyNTYyZmIxMWI5YzljYjg2NzUwNGM5NGZkMmQ3NmVkOWM0NTE0YjhhZGI3MzQxZTdlZWJiY2Y2N2RlOTYyNjAyMWJlYWQxYjliMDgxNDkyIn0.eyJhdWQiOiJoeWRyYXdpc2VfYXBwIiwianRpIjoiYTI1NjJmYjExYjljOWNiODY3NTA0Yzk0ZmQyZDc2ZWQ5YzQ1MTRiOGFkYjczNDFlN2VlYmJjZjY3ZGU5NjI2MDIxYmVhZDFiOWIwODE0OTIiLCJpYXQiOjE2NDg3NDA3MjcsIm5iZiI6MTY0ODc0MDcyNywiZXhwIjoxNjQ4NzQ0MzI3LCJzdWIiOiIxMjM0NTYiLCJzY29wZXMiOlsiYWxsIl19.A0cjscbqE_QDaFtt_k9Db0EYeKFupZokcOz44xhS7gwGbKMgevUckgHukCUJ1wQxQpXrbFA8CH9Oj4TYPASheG-PiB9CEsguiqLdY9d8hz5c3ztU6Gi9dqOzrKSfuMewcko4eF-VHmrQPD24RAFBd_pseK7TsGC66WhhfhuizSeHnhTMOzAgbzYZzWD0C3RuDvKdZmCmgj9W6y2MCHxGm8_wDwYKVN_QM1IVlDOZkwWqXHGG3N9lPSXSZIBrry6VToO31DWEBUbiJWm4GTUuLFFkWfVAL8uoZ6PEVziBkaPdltB3Yo11iXZr8uNrThFcmzjbs751fofx9DLpdv05Cw", "refresh_token": "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", "expires_at": 1648744327}
diff --git a/tests/test_core_v2.py b/tests/test_core_v2.py
new file mode 100644
index 0000000..b31ca49
--- /dev/null
+++ b/tests/test_core_v2.py
@@ -0,0 +1,39 @@
+"""Define basic data for unittests."""
+import unittest
+import requests_mock
+
+from tests.extras import load_fixture
+
+
+class UnitTestBase(unittest.TestCase):
+    """Top level test class"""
+
+    @requests_mock.Mocker()
+    def setUp(self, mock):
+        """Initialize rdy object for unittests."""
+        from hydrawiser.core_v2 import HydrawiserV2
+
+        mock.post(
+            HydrawiserV2.TOKEN_ENDPOINT,
+            text=load_fixture('oauth2_resp.json')
+        )
+
+        # initialize self.rdy object
+        self.rdy = HydrawiserV2('test@example.com', 's3cr3tP1ssw0rd')
+
+    def cleanUp(self):
+        """Cleanup any data created from the tests."""
+        self.rdy = None
+
+    def tearDown(self):
+        """Stop everything initialized."""
+        self.cleanUp()
+
+
+class TestHydrawiserV2(UnitTestBase):
+
+    def test_attributes(self):
+        """ Test if attributes exist. """
+
+        self.assertTrue(hasattr(self.rdy, 'customer'))
+        self.assertTrue(hasattr(self.rdy, 'controllers'))
diff --git a/tox.ini b/tox.ini
index 9857b7d..367445e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py38, lint
+envlist = py38, lint
 skip_missing_interpreters = True
 
 [testenv]
@@ -14,6 +14,7 @@ commands =
     py.test --basetemp={envtmpdir} --cov-report term-missing --cov --verbose
 deps =
     requests>=2.18.4
+    gql[requests]>=3.0.0
     requests_mock
     pytest
     pytest-cov