diff --git a/butterrobot/app.py b/butterrobot/app.py
index 42b1161..8301a5d 100644
--- a/butterrobot/app.py
+++ b/butterrobot/app.py
@@ -11,29 +11,13 @@ from butterrobot.queue import q
 from butterrobot.db import ChannelQuery
 from butterrobot.config import SECRET_KEY, HOSTNAME
 from butterrobot.objects import Message, Channel
+from butterrobot.http import ExternalProxyFix
 from butterrobot.plugins import get_available_plugins
 from butterrobot.platforms import PLATFORMS, get_available_platforms
 from butterrobot.platforms.base import Platform
 from butterrobot.admin.blueprint import admin as admin_bp
 
 
-class ExternalProxyFix(object):
-    """
-    Custom proxy helper to get the external hostname from the `X-External-Host` header
-    used by one of the reverse proxies in front of this in production.
-    It does nothing if the header is not present.
-    """
-
-    def __init__(self, app):
-        self.app = app
-
-    def __call__(self, environ, start_response):
-        host = environ.get("HTTP_X_EXTERNAL_HOST", "")
-        if host:
-            environ["HTTP_HOST"] = host
-        return self.app(environ, start_response)
-
-
 loop = asyncio.get_event_loop()
 logger = structlog.get_logger(__name__)
 app = Flask(__name__)
diff --git a/butterrobot/http.py b/butterrobot/http.py
new file mode 100644
index 0000000..9086155
--- /dev/null
+++ b/butterrobot/http.py
@@ -0,0 +1,15 @@
+class ExternalProxyFix(object):
+    """
+    Custom proxy helper to get the external hostname from the `X-External-Host` header
+    used by one of the reverse proxies in front of this in production.
+    It does nothing if the header is not present.
+    """
+
+    def __init__(self, app):
+        self.app = app
+
+    def __call__(self, environ, start_response):
+        host = environ.get("HTTP_X_EXTERNAL_HOST", "")
+        if host:
+            environ["HTTP_HOST"] = host
+        return self.app(environ, start_response)
diff --git a/butterrobot/platforms/base.py b/butterrobot/platforms/base.py
index b7dd352..f92d665 100644
--- a/butterrobot/platforms/base.py
+++ b/butterrobot/platforms/base.py
@@ -1,4 +1,4 @@
-from abc import abstractclassmethod
+from abc import abstractmethod
 from dataclasses import dataclass
 
 
@@ -23,14 +23,45 @@ class Platform:
 
     @classmethod
     def init(cls, app):
+        """
+        Initialises the platform.
+
+        Used at the application launch to prepare anything required for
+        the platform to work..
+
+        It receives the flask application via parameter in case the platform
+        requires for custom webservice endpoints or configuration.
+        """
+        pass
+
+    @classmethod
+    @abstractmethod
+    def parse_incoming_message(cls, request) -> 'Message':
+        """
+        Parses the incoming request and returns a :class:`butterrobot.objects.Message` instance.
+        """
+        pass
+
+    @classmethod
+    @abstractmethod
+    def parse_channel_name_from_raw(cls, channel_raw) -> str:
+        """
+        Extracts the Channel name from :class:`butterrobot.objects.Channel.channel_raw`.
+        """
+        pass
+
+    @classmethod
+    @abstractmethod
+    def parse_channel_from_message(cls, channel_raw) -> 'Channel':
+        """
+        Extracts the Channel raw data from the message received in the incoming webhook.
+        """
         pass
 
 
 class PlatformMethods:
-    @abstractclassmethod
-    def send_message(cls, message):
-        pass
-
-    @abstractclassmethod
-    def reply_message(cls, message, reply_to):
+    @classmethod
+    @abstractmethod
+    def send_message(cls, message: 'Message'):
+        """Method used to send a message via the platform"""
         pass
diff --git a/tests/test_objects.py b/tests/test_objects.py
new file mode 100644
index 0000000..1388dbd
--- /dev/null
+++ b/tests/test_objects.py
@@ -0,0 +1,16 @@
+from butterrobot.objects import Channel, ChannelPlugin
+
+
+def test_channel_has_enabled_plugin_ok():
+    channel = Channel(
+        platform="debug",
+        platform_channel_id="debug",
+        channel_raw={},
+        plugins={
+            "enabled": ChannelPlugin(id=1, channel_id="test", plugin_id="enabled", enabled=True),
+            "existant": ChannelPlugin(id=2, channel_id="test", plugin_id="existant"),
+        }
+    )
+    assert not channel.has_enabled_plugin("non.existant")
+    assert not channel.has_enabled_plugin("existant")
+    assert channel.has_enabled_plugin("enabled")