<p></p>
<p><b>@hlfan</b> approved this pull request.</p>

<p dir="auto">Looks good, only noted some minor ideas</p><hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5943#discussion_r2056936086">app/controllers/api/traces_controller.rb</a>:</p>
<pre style='color:#555'>> +      if @trace.public? || @trace.user == current_user
+        respond_to do |format|
+          format.xml
+          format.json
+        end
+      else
+        head :forbidden
+      end
</pre>
⬇️ Suggested change
<pre style="color: #555">-      if @trace.public? || @trace.user == current_user
-        respond_to do |format|
-          format.xml
-          format.json
-        end
-      else
-        head :forbidden
-      end
+      return head :forbidden unless @trace.public? || @trace.user == current_user
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
</pre>

<p dir="auto">I'd keep the <code class="notranslate">head :forbidden unless</code> guard clause from before</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5943#discussion_r2056936987">test/controllers/api/users/traces_controller_test.rb</a>:</p>
<pre style='color:#555'>> +        assert_equal trace1.id, js["traces"][0]["id"]
+        assert_equal trace2.id, js["traces"][1]["id"]
</pre>
<p dir="auto">I'd like to see the tags being checked like for the XML here too</p>

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