diff --git a/addons/auth_signup/controllers/main.py b/addons/auth_signup/controllers/main.py
index 0348edb4511..41210d1d6d7 100644
--- a/addons/auth_signup/controllers/main.py
+++ b/addons/auth_signup/controllers/main.py
@@ -162,7 +162,7 @@ class AuthSignupHome(Home):
             raise SignupError(_('Authentication Failed.'))
 
 class AuthBaseSetup(BaseSetup):
-    @http.route('/base_setup/data', type='json', auth='user')
+    @http.route()
     def base_setup_data(self, **kwargs):
         res = super().base_setup_data(**kwargs)
         res.update({'resend_invitation': True})
diff --git a/addons/http_routing/controllers/main.py b/addons/http_routing/controllers/main.py
index 351d031f48d..4776731c8f8 100644
--- a/addons/http_routing/controllers/main.py
+++ b/addons/http_routing/controllers/main.py
@@ -20,6 +20,6 @@ class Routing(Home):
 
 class SessionWebsite(Session):
 
-    @http.route('/web/session/logout', type='http', auth="none", website=True, multilang=False, sitemap=False)
+    @http.route('/web/session/logout', website=True, multilang=False, sitemap=False)
     def logout(self, redirect='/web'):
         return super().logout(redirect=redirect)
diff --git a/addons/hw_posbox_homepage/controllers/main.py b/addons/hw_posbox_homepage/controllers/main.py
index 2a3ea05dec1..718718cb9f7 100644
--- a/addons/hw_posbox_homepage/controllers/main.py
+++ b/addons/hw_posbox_homepage/controllers/main.py
@@ -97,7 +97,7 @@ class IoTboxHomepage(Home):
             'system': platform.system(),
             }
 
-    @http.route('/', type='http', auth='none')
+    @http.route()
     def index(self):
         wifi = Path.home() / 'wifi_network.txt'
         remote_server = Path.home() / 'odoo-remote-server.conf'
diff --git a/addons/sale_timesheet/controllers/portal.py b/addons/sale_timesheet/controllers/portal.py
index 6f5f97d1a1b..e5318ec4362 100644
--- a/addons/sale_timesheet/controllers/portal.py
+++ b/addons/sale_timesheet/controllers/portal.py
@@ -133,6 +133,6 @@ class SaleTimesheetCustomerPortal(TimesheetCustomerPortal):
                 })
         return values
 
-    @http.route(['/my/timesheets', '/my/timesheets/page/<int:page>'], type='http', auth="user", website=True)
-    def portal_my_timesheets(self, page=1, sortby=None, filterby=None, search=None, search_in='all', groupby='sol', **kw):
-        return super().portal_my_timesheets(page, sortby, filterby, search, search_in, groupby, **kw)
+    @http.route()
+    def portal_my_timesheets(self, *args, groupby='sol', **kw):
+        return super().portal_my_timesheets(*args, groupby=groupby, **kw)
diff --git a/addons/web/controllers/export.py b/addons/web/controllers/export.py
index e2dc55fe214..5fdfbc25353 100644
--- a/addons/web/controllers/export.py
+++ b/addons/web/controllers/export.py
@@ -510,7 +510,7 @@ class ExportFormat(object):
 class CSVExport(ExportFormat, http.Controller):
 
     @http.route('/web/export/csv', type='http', auth="user")
-    def index(self, data):
+    def web_export_csv(self, data):
         try:
             return self.base(data)
         except Exception as exc:
@@ -554,7 +554,7 @@ class CSVExport(ExportFormat, http.Controller):
 class ExcelExport(ExportFormat, http.Controller):
 
     @http.route('/web/export/xlsx', type='http', auth="user")
-    def index(self, data):
+    def web_export_xlsx(self, data):
         try:
             return self.base(data)
         except Exception as exc:
diff --git a/addons/website/controllers/main.py b/addons/website/controllers/main.py
index 1552ef7885d..87ab0819082 100644
--- a/addons/website/controllers/main.py
+++ b/addons/website/controllers/main.py
@@ -74,7 +74,7 @@ class QueryURL(object):
 
 class Website(Home):
 
-    @http.route('/', type='http', auth="public", website=True, sitemap=True)
+    @http.route('/', auth="public", website=True, sitemap=True)
     def index(self, **kw):
         """ The goal of this controller is to make sure we don't serve a 404 as
         the website homepage. As this is the website entry point, serving a 404
diff --git a/addons/website_crm_partner_assign/controllers/main.py b/addons/website_crm_partner_assign/controllers/main.py
index 0b1d33d6cfd..59dab32111e 100644
--- a/addons/website_crm_partner_assign/controllers/main.py
+++ b/addons/website_crm_partner_assign/controllers/main.py
@@ -308,7 +308,7 @@ class WebsiteCrmPartnerAssign(WebsitePartnerPage):
 
 
     # Do not use semantic controller due to sudo()
-    @http.route(['/partners/<partner_id>'], type='http', auth="public", website=True)
+    @http.route()
     def partners_detail(self, partner_id, **post):
         _, partner_id = unslug(partner_id)
         current_grade, current_country = None, None
diff --git a/addons/website_event_meet/controllers/community.py b/addons/website_event_meet/controllers/community.py
index b194f1dda3b..e6e1ba629b0 100644
--- a/addons/website_event_meet/controllers/community.py
+++ b/addons/website_event_meet/controllers/community.py
@@ -28,8 +28,7 @@ class WebsiteEventMeetController(EventCommunityController):
     # MAIN PAGE
     # ------------------------------------------------------------
 
-    @http.route(["/event/<model('event.event'):event>/community"], type="http",
-                auth="public", website=True, sitemap=True)
+    @http.route()
     def community(self, event, page=1, lang=None, **kwargs):
         """Display the meeting rooms of the event on the frontend side.
 
diff --git a/addons/website_event_meet_quiz/controllers/community.py b/addons/website_event_meet_quiz/controllers/community.py
index 7cd974a19f3..91b93aec273 100644
--- a/addons/website_event_meet_quiz/controllers/community.py
+++ b/addons/website_event_meet_quiz/controllers/community.py
@@ -3,14 +3,13 @@
 
 from werkzeug.exceptions import Forbidden
 
-from odoo import http
 from odoo.addons.website_event.controllers.community import EventCommunityController
-from odoo.http import request
+from odoo.http import request, route
 
 
 class WebsiteEventTrackQuizMeetController(EventCommunityController):
 
-    @http.route(['/event/<model("event.event"):event>/community'], type='http', auth="public", website=True, sitemap=False)
+    @route()
     def community(self, event, page=1, lang=None, **kwargs):
         # website_event_track_quiz
         values = self._get_community_leaderboard_render_values(event, kwargs.get('search'), page)
diff --git a/addons/website_event_track_quiz/controllers/community.py b/addons/website_event_track_quiz/controllers/community.py
index 7748a2dc1db..6957d93cd7c 100644
--- a/addons/website_event_track_quiz/controllers/community.py
+++ b/addons/website_event_track_quiz/controllers/community.py
@@ -27,8 +27,7 @@ class WebsiteEventTrackQuizCommunityController(EventCommunityController):
         values = self._get_community_leaderboard_render_values(event, None, None)
         return request.render('website_event_track_quiz.event_leaderboard', values)
 
-    @http.route('/event/<model("event.event"):event>/community',
-                type='http', auth="public", website=True, sitemap=False)
+    @http.route()
     def community(self, event, **kwargs):
         values = self._get_community_leaderboard_render_values(event, None, None)
         return request.render('website_event_track_quiz.event_leaderboard', values)
diff --git a/addons/website_livechat/controllers/main.py b/addons/website_livechat/controllers/main.py
index 8678526e6b9..0f24a22bfe8 100644
--- a/addons/website_livechat/controllers/main.py
+++ b/addons/website_livechat/controllers/main.py
@@ -59,7 +59,7 @@ class WebsiteLivechat(LivechatController):
         }
         return request.render("website_livechat.channel_page", values)
 
-    @http.route('/im_livechat/get_session', type="json", auth='public', cors="*")
+    @http.route()
     def get_session(self, channel_id, anonymous_name, previous_operator_id=None, chatbot_script_id=None, persisted=True, **kwargs):
         """ Override to use visitor name instead of 'Visitor' whenever a visitor start a livechat session. """
         visitor_sudo = request.env['website.visitor']._get_visitor_from_request()
diff --git a/addons/website_sale_digital/controllers/main.py b/addons/website_sale_digital/controllers/main.py
index 732a15dbced..d1a4b777085 100644
--- a/addons/website_sale_digital/controllers/main.py
+++ b/addons/website_sale_digital/controllers/main.py
@@ -14,9 +14,7 @@ from odoo.addons.sale.controllers.portal import CustomerPortal
 class WebsiteSaleDigital(CustomerPortal):
     orders_page = '/my/orders'
 
-    @http.route([
-        '/my/orders/<int:order_id>',
-    ], type='http', auth='public', website=True)
+    @http.route()
     def portal_order_page(self, order_id=None, **post):
         response = super(WebsiteSaleDigital, self).portal_order_page(order_id=order_id, **post)
         if not 'sale_order' in response.qcontext:
diff --git a/addons/website_sale_loyalty/controllers/main.py b/addons/website_sale_loyalty/controllers/main.py
index 2ebf38ed683..db725e6ba9b 100644
--- a/addons/website_sale_loyalty/controllers/main.py
+++ b/addons/website_sale_loyalty/controllers/main.py
@@ -35,7 +35,7 @@ class WebsiteSale(main.WebsiteSale):
             order._auto_apply_rewards()
         return res
 
-    @http.route(['/shop/cart'], type='http', auth="public", website=True)
+    @http.route()
     def cart(self, **post):
         order = request.website.sale_get_order()
         if order:
diff --git a/addons/website_slides/controllers/mail.py b/addons/website_slides/controllers/mail.py
index 7c52fa46b35..54b6ab7dd17 100644
--- a/addons/website_slides/controllers/mail.py
+++ b/addons/website_slides/controllers/mail.py
@@ -20,7 +20,7 @@ class SlidesPortalChatter(PortalChatter):
             return True
         return super()._portal_post_has_content(res_model, res_id, message, attachment_ids=attachment_ids, **kw)
 
-    @http.route(['/mail/chatter_post'], type='json', methods=['POST'], auth='public', website=True)
+    @http.route()
     def portal_chatter_post(self, res_model, res_id, message, **kw):
         result = super(SlidesPortalChatter, self).portal_chatter_post(res_model, res_id, message, **kw)
         if result and res_model == 'slide.channel':
diff --git a/addons/website_slides_survey/controllers/slides.py b/addons/website_slides_survey/controllers/slides.py
index 577afcb795d..503468ffa4a 100644
--- a/addons/website_slides_survey/controllers/slides.py
+++ b/addons/website_slides_survey/controllers/slides.py
@@ -42,7 +42,7 @@ class WebsiteSlidesSurvey(WebsiteSlides):
     # Overrides
     # ------------------------------------------------------------
 
-    @http.route(['/slides/add_slide'], type='json', auth='user', methods=['POST'], website=True)
+    @http.route()
     def create_slide(self, *args, **post):
         create_new_survey = post['slide_category'] == "certification" and post.get('survey') and not post['survey']['id']
         linked_survey_id = int(post.get('survey', {}).get('id') or 0)
diff --git a/odoo/addons/test_lint/tests/__init__.py b/odoo/addons/test_lint/tests/__init__.py
index f7908d8a6e3..334dedcefe4 100644
--- a/odoo/addons/test_lint/tests/__init__.py
+++ b/odoo/addons/test_lint/tests/__init__.py
@@ -11,3 +11,4 @@ from . import test_onchange_domains
 from . import test_override_signatures
 from . import test_pofile
 from . import test_pylint
+from . import test_routes
diff --git a/odoo/addons/test_lint/tests/test_routes.py b/odoo/addons/test_lint/tests/test_routes.py
new file mode 100644
index 00000000000..c9479adcf23
--- /dev/null
+++ b/odoo/addons/test_lint/tests/test_routes.py
@@ -0,0 +1,48 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import logging
+from pprint import pformat
+from unittest.mock import patch
+
+from odoo import http
+from odoo.tests import tagged, TransactionCase
+
+_logger = logging.getLogger(__name__)
+
+
+@tagged('post_install', '-at_install')
+class RoutesLinter(TransactionCase):
+
+    def test_routes_definition(self):
+        """Forbid redefinition of same-value attributes in an inherited route.
+
+        Makes it easier to know what an inherited route really modifies and
+        investigate unexpected behavior.
+        """
+        _check_and_complete_route_definition = http._check_and_complete_route_definition
+
+        def extended_check(controller_cls, submethod, merged_routing):
+            if 'type' in merged_routing:
+                # merged_routing contains non default 'type' value
+                # => current method is an inherited route.
+                useless_overrides = {
+                    key: value
+                    for key, value in submethod.original_routing.items()
+                    if key not in ('routes', 'type')
+                    if merged_routing.get(key) == value
+                }
+                if useless_overrides:
+                    _logger.warning(
+                        "The endpoint %s is duplicating the existing routing configuration : %s",
+                        f'{controller_cls.__module__}.{controller_cls.__name__}.{submethod.__name__}',
+                        pformat(useless_overrides),
+                    )
+
+            _check_and_complete_route_definition(controller_cls, submethod, merged_routing)
+
+        installed_modules = set(self.env['ir.module.module'].search([
+            ('state', '=', 'installed'),
+        ]).mapped('name'))
+        with patch('odoo.http._check_and_complete_route_definition', extended_check):
+            for _ in http._generate_routing_rules(installed_modules, nodb_only=False):
+                pass
diff --git a/odoo/http.py b/odoo/http.py
index ff39250c4d3..386e89e7931 100644
--- a/odoo/http.py
+++ b/odoo/http.py
@@ -797,13 +797,7 @@ def _generate_routing_rules(modules, nodb_only, converters=None):
                     _logger.warning("The endpoint %s is not decorated by @route(), decorating it myself.", f'{cls.__module__}.{cls.__name__}.{method_name}')
                     submethod = route()(submethod)
 
-                # Ensure "type" is defined on each method's own routing,
-                # also ensure overrides don't change the routing type.
-                default_type = submethod.original_routing.get('type', 'http')
-                routing_type = merged_routing.setdefault('type', default_type)
-                if submethod.original_routing.get('type') not in (None, routing_type):
-                    _logger.warning("The endpoint %s changes the route type, using the original type: %r.", f'{cls.__module__}.{cls.__name__}.{method_name}', routing_type)
-                submethod.original_routing['type'] = routing_type
+                _check_and_complete_route_definition(cls, submethod, merged_routing)
 
                 merged_routing.update(submethod.original_routing)
 
@@ -827,6 +821,24 @@ def _generate_routing_rules(modules, nodb_only, converters=None):
                 yield (url, endpoint)
 
 
+def _check_and_complete_route_definition(controller_cls, submethod, merged_routing):
+    """Verify and complete the route definition.
+
+    * Ensure 'type' is defined on each method's own routing.
+    * also ensure overrides don't change the routing type.
+
+    :param submethod: route method
+    :param dict merged_routing: accumulated routing values (defaults + submethod ancestor methods)
+    """
+    default_type = submethod.original_routing.get('type', 'http')
+    routing_type = merged_routing.setdefault('type', default_type)
+    if submethod.original_routing.get('type') not in (None, routing_type):
+        _logger.warning(
+            "The endpoint %s changes the route type, using the original type: %r.",
+            f'{controller_cls.__module__}.{controller_cls.__name__}.{submethod.__name__}',
+            routing_type)
+    submethod.original_routing['type'] = routing_type
+
 # =========================================================
 # Session
 # =========================================================