diff --git a/zerver/webhooks/heroku/view.py b/zerver/webhooks/heroku/view.py
index 19bd29894e..092213784b 100644
--- a/zerver/webhooks/heroku/view.py
+++ b/zerver/webhooks/heroku/view.py
@@ -2,8 +2,8 @@
 from django.http import HttpRequest, HttpResponse
 
 from zerver.decorator import webhook_view
-from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
+from zerver.lib.typed_endpoint import typed_endpoint
 from zerver.lib.webhooks.common import check_send_webhook_message
 from zerver.models import UserProfile
 
@@ -17,15 +17,16 @@ TEMPLATE = """
 
 
 @webhook_view("Heroku", notify_bot_owner_on_invalid_json=False)
-@has_request_variables
+@typed_endpoint
 def api_heroku_webhook(
     request: HttpRequest,
     user_profile: UserProfile,
-    head: str = REQ(),
-    app: str = REQ(),
-    user: str = REQ(),
-    url: str = REQ(),
-    git_log: str = REQ(),
+    *,
+    head: str,
+    app: str,
+    user: str,
+    url: str,
+    git_log: str,
 ) -> HttpResponse:
     content = TEMPLATE.format(user=user, head=head, app=app, url=url, git_log=git_log)
 
diff --git a/zerver/webhooks/slack/view.py b/zerver/webhooks/slack/view.py
index 6751c2b485..6128af02b0 100644
--- a/zerver/webhooks/slack/view.py
+++ b/zerver/webhooks/slack/view.py
@@ -5,8 +5,9 @@ from django.utils.translation import gettext as _
 from zerver.actions.message_send import check_send_stream_message
 from zerver.decorator import webhook_view
 from zerver.lib.exceptions import JsonableError
-from zerver.lib.request import REQ, RequestNotes, has_request_variables
+from zerver.lib.request import RequestNotes
 from zerver.lib.response import json_success
+from zerver.lib.typed_endpoint import typed_endpoint
 from zerver.models import UserProfile
 
 ZULIP_MESSAGE_TEMPLATE = "**{message_sender}**: {text}"
@@ -14,15 +15,16 @@ VALID_OPTIONS = {"SHOULD_NOT_BE_MAPPED": "0", "SHOULD_BE_MAPPED": "1"}
 
 
 @webhook_view("Slack", notify_bot_owner_on_invalid_json=False)
-@has_request_variables
+@typed_endpoint
 def api_slack_webhook(
     request: HttpRequest,
     user_profile: UserProfile,
-    user_name: str = REQ(),
-    text: str = REQ(),
-    channel_name: str = REQ(),
-    stream: str = REQ(default="slack"),
-    channels_map_to_topics: str = REQ(default="1"),
+    *,
+    user_name: str,
+    text: str,
+    channel_name: str,
+    stream: str = "slack",
+    channels_map_to_topics: str = "1",
 ) -> HttpResponse:
     if channels_map_to_topics not in list(VALID_OPTIONS.values()):
         raise JsonableError(_("Error: channels_map_to_topics parameter other than 0 or 1"))
diff --git a/zerver/webhooks/wordpress/view.py b/zerver/webhooks/wordpress/view.py
index 96a0555398..2c0390eccc 100644
--- a/zerver/webhooks/wordpress/view.py
+++ b/zerver/webhooks/wordpress/view.py
@@ -4,8 +4,8 @@ from django.utils.translation import gettext as _
 
 from zerver.decorator import webhook_view
 from zerver.lib.exceptions import JsonableError
-from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
+from zerver.lib.typed_endpoint import typed_endpoint
 from zerver.lib.webhooks.common import check_send_webhook_message
 from zerver.models import UserProfile
 
@@ -28,17 +28,18 @@ ALL_EVENT_TYPES = [
 
 
 @webhook_view("WordPress", notify_bot_owner_on_invalid_json=False, all_event_types=ALL_EVENT_TYPES)
-@has_request_variables
+@typed_endpoint
 def api_wordpress_webhook(
     request: HttpRequest,
     user_profile: UserProfile,
-    hook: str = REQ(default="WordPress action"),
-    post_title: str = REQ(default="New WordPress post"),
-    post_type: str = REQ(default="post"),
-    post_url: str = REQ(default="WordPress post URL"),
-    display_name: str = REQ(default="New user name"),
-    user_email: str = REQ(default="New user email"),
-    user_login: str = REQ(default="Logged in user"),
+    *,
+    hook: str = "WordPress action",
+    post_title: str = "New WordPress post",
+    post_type: str = "post",
+    post_url: str = "WordPress post URL",
+    display_name: str = "New user name",
+    user_email: str = "New user email",
+    user_login: str = "Logged in user",
 ) -> HttpResponse:
     # remove trailing whitespace (issue for some test fixtures)
     hook = hook.rstrip()