diff --git a/frontend/packages/agent/src/app.js b/frontend/packages/agent/src/app.js
index feedcce7..b9320108 100644
--- a/frontend/packages/agent/src/app.js
+++ b/frontend/packages/agent/src/app.js
@@ -155,7 +155,14 @@ window.marked = marked;
     const hiveLabel = hiveName || null;
     const tab = qualifiedLabel && qualifiedLabel !== label ? qualifiedLabel : label;
     document.title = hiveLabel ? `${label} // ${hiveLabel}` : `${tab} // hyperhive`;
-    const dashUrl = `${location.protocol}//${location.hostname}:${dashboardPort}/`;
+    // When accessed via hive-gateway the page lives at
+    // `/agent/<name>/` on the same origin as the dashboard (`/`).
+    // Detect this by the path prefix and use `location.origin` instead
+    // of the direct TCP port — the direct port is unreachable or
+    // wrong scheme behind HTTPS TLS termination.
+    const dashUrl = location.pathname.startsWith('/agent/')
+      ? location.origin + '/'
+      : `${location.protocol}//${location.hostname}:${dashboardPort}/`;
     dashboardBase = dashUrl;
     populateOverflowMenu(label, dashUrl);
     // Swarm label in the chrome: show "swarm/hive" when both set, just
diff --git a/frontend/packages/agent/src/stats.js b/frontend/packages/agent/src/stats.js
index 0565cf5d..5769390e 100644
--- a/frontend/packages/agent/src/stats.js
+++ b/frontend/packages/agent/src/stats.js
@@ -330,7 +330,13 @@ window.Chart = Chart;
       document.title = 'stats · ' + s.label;
       document.getElementById('title').textContent = '◆ ' + s.label + ' ◆';
       const dl = document.getElementById('dashboard-link');
-      dl.href = 'http://' + window.location.hostname + ':' + s.dashboard_port + '/';
+      // When accessed via hive-gateway the page lives at `/agent/<name>/`
+      // on the same origin as the dashboard (`/`). Detect via path prefix
+      // rather than the direct port (which is unreachable or wrong scheme
+      // behind HTTPS TLS termination).
+      dl.href = window.location.pathname.startsWith('/agent/')
+        ? window.location.origin + '/'
+        : 'http://' + window.location.hostname + ':' + s.dashboard_port + '/';
     } catch (_) { /* non-fatal */ }
   }