diff --git a/senpy/blueprints.py b/senpy/blueprints.py
index dccdb35..42e0c90 100644
--- a/senpy/blueprints.py
+++ b/senpy/blueprints.py
@@ -184,14 +184,19 @@ def basic_api(f):
     return decorated_function
 
 
-@api_blueprint.route('/', methods=['POST', 'GET'])
+@api_blueprint.route('/', defaults={'plugin': None}, methods=['POST', 'GET'])
+@api_blueprint.route('/<path:plugin>', methods=['POST', 'GET'])
 @basic_api
-def api_root():
+def api_root(plugin):
     if request.parameters['help']:
         dic = dict(api.API_PARAMS, **api.NIF_PARAMS)
         response = Help(valid_parameters=dic)
         return response
     req = api.parse_call(request.parameters)
+    if plugin:
+        plugin = plugin.replace('+', '/')
+        plugin = plugin.split('/')
+        req.parameters['algorithm'] = plugin
     return current_app.senpy.analyse(req)
 
 
@@ -221,7 +226,7 @@ def plugins():
 
 @api_blueprint.route('/plugins/<plugin>/', methods=['POST', 'GET'])
 @basic_api
-def plugin(plugin=None):
+def plugin(plugin):
     sp = current_app.senpy
     return sp.get_plugin(plugin)
 
diff --git a/senpy/extensions.py b/senpy/extensions.py
index 46c1924..d545485 100644
--- a/senpy/extensions.py
+++ b/senpy/extensions.py
@@ -153,7 +153,6 @@ class Senpy(object):
                 yield i
             return
         plugin = plugins[0]
-        self._activate(plugin)  # Make sure the plugin is activated
         specific_params = api.parse_extra_params(req, plugin)
         req.analysis.append({'plugin': plugin,
                              'parameters': specific_params})
@@ -352,7 +351,7 @@ class Senpy(object):
 
         logger.info("Activating plugin: {}".format(plugin.name))
 
-        if sync or 'async' in plugin and not plugin.async:
+        if sync or not getattr(plugin, 'async', True):
             return self._activate(plugin)
         else:
             th = Thread(target=partial(self._activate, plugin))
@@ -375,7 +374,7 @@ class Senpy(object):
 
         self._set_active(plugin, False)
 
-        if sync or 'async' in plugin and not plugin.async:
+        if sync or not getattr(plugin, 'async', True):
             self._deactivate(plugin)
         else:
             th = Thread(target=partial(self._deactivate, plugin))
diff --git a/tests/test_blueprints.py b/tests/test_blueprints.py
index 3efbf2e..5648ece 100644
--- a/tests/test_blueprints.py
+++ b/tests/test_blueprints.py
@@ -70,7 +70,7 @@ class BlueprintsTest(TestCase):
 
     def test_analysis_extra(self):
         """
-        Extra params that have a default should
+        Extra params that have a default should use it
         """
         resp = self.client.get("/api/?i=My aloha mohame&algo=Dummy&with_parameters=true")
         self.assertCode(resp, 200)
@@ -95,6 +95,44 @@ class BlueprintsTest(TestCase):
         resp = self.client.get("/api/?i=My aloha mohame&algo=DummyRequired&example=a")
         self.assertCode(resp, 200)
 
+    def test_analysis_url(self):
+        """
+        The algorithm can also be specified as part of the URL
+        """
+        self.app.config['TESTING'] = False  # Errors are expected in this case
+        resp = self.client.get("/api/DummyRequired?i=My aloha mohame")
+        self.assertCode(resp, 400)
+        js = parse_resp(resp)
+        logging.debug("Got response: %s", js)
+        assert isinstance(js, models.Error)
+        resp = self.client.get("/api/DummyRequired?i=My aloha mohame&example=notvalid")
+        self.assertCode(resp, 400)
+        resp = self.client.get("/api/DummyRequired?i=My aloha mohame&example=a")
+        self.assertCode(resp, 200)
+
+    def test_analysis_chain(self):
+        """
+        More than one algorithm can be specified. Plugins will then be chained
+        """
+        resp = self.client.get("/api/Dummy?i=My aloha mohame")
+        js = parse_resp(resp)
+        assert len(js['analysis']) == 1
+        assert js['entries'][0]['nif:isString'] == 'My aloha mohame'[::-1]
+
+        resp = self.client.get("/api/Dummy/Dummy?i=My aloha mohame")
+        # Calling dummy twice, should return the same string
+        self.assertCode(resp, 200)
+        js = parse_resp(resp)
+        assert len(js['analysis']) == 2
+        assert js['entries'][0]['nif:isString'] == 'My aloha mohame'
+
+        resp = self.client.get("/api/Dummy+Dummy?i=My aloha mohame")
+        # Same with pluses instead of slashes
+        self.assertCode(resp, 200)
+        js = parse_resp(resp)
+        assert len(js['analysis']) == 2
+        assert js['entries'][0]['nif:isString'] == 'My aloha mohame'
+
     def test_error(self):
         """
         The dummy plugin returns an empty response,\