diff --git a/datasette/app.py b/datasette/app.py
index 6152af21..4db64c35 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -1,6 +1,7 @@
 import asyncio
 import collections
 import hashlib
+import itertools
 import json
 import os
 import re
@@ -585,6 +586,8 @@ class Datasette:
                 "zip": zip,
                 "body_scripts": body_scripts,
                 "format_bytes": format_bytes,
+                "extra_css_urls": self._asset_urls("extra_css_urls", template, context),
+                "extra_js_urls": self._asset_urls("extra_js_urls", template, context),
             },
             **extra_template_vars,
         }
@@ -596,6 +599,34 @@ class Datasette:
             )
         return Response.html(await template.render_async(template_context))
 
+    def _asset_urls(self, key, template, context):
+        # Flatten list-of-lists from plugins:
+        seen_urls = set()
+        for url_or_dict in itertools.chain(
+            itertools.chain.from_iterable(
+                getattr(pm.hook, key)(
+                    template=template.name,
+                    database=context.get("database"),
+                    table=context.get("table"),
+                    datasette=self,
+                )
+            ),
+            (self.metadata(key) or []),
+        ):
+            if isinstance(url_or_dict, dict):
+                url = url_or_dict["url"]
+                sri = url_or_dict.get("sri")
+            else:
+                url = url_or_dict
+                sri = None
+            if url in seen_urls:
+                continue
+            seen_urls.add(url)
+            if sri:
+                yield {"url": url, "sri": sri}
+            else:
+                yield {"url": url}
+
     def app(self):
         "Returns an ASGI app function that serves the whole of Datasette"
         default_templates = str(app_root / "datasette" / "templates")
diff --git a/datasette/views/base.py b/datasette/views/base.py
index 7e579a30..4ac11247 100644
--- a/datasette/views/base.py
+++ b/datasette/views/base.py
@@ -72,34 +72,6 @@ class BaseView(AsgiView):
     def database_color(self, database):
         return "ff0000"
 
-    def _asset_urls(self, key, template, context):
-        # Flatten list-of-lists from plugins:
-        seen_urls = set()
-        for url_or_dict in itertools.chain(
-            itertools.chain.from_iterable(
-                getattr(pm.hook, key)(
-                    template=template.name,
-                    database=context.get("database"),
-                    table=context.get("table"),
-                    datasette=self.ds,
-                )
-            ),
-            (self.ds.metadata(key) or []),
-        ):
-            if isinstance(url_or_dict, dict):
-                url = url_or_dict["url"]
-                sri = url_or_dict.get("sri")
-            else:
-                url = url_or_dict
-                sri = None
-            if url in seen_urls:
-                continue
-            seen_urls.add(url)
-            if sri:
-                yield {"url": url, "sri": sri}
-            else:
-                yield {"url": url}
-
     async def render(self, templates, request, context):
         template = self.ds.jinja_env.select_template(templates)
         return await self.ds.render_template(
@@ -109,12 +81,6 @@ class BaseView(AsgiView):
                 **{
                     "database_url": self.database_url,
                     "database_color": self.database_color,
-                    "extra_css_urls": self._asset_urls(
-                        "extra_css_urls", template, context
-                    ),
-                    "extra_js_urls": self._asset_urls(
-                        "extra_js_urls", template, context
-                    ),
                 },
             },
             request=request,