Read gated status from Hub metadata fallback

backend_router.py

@@ -14,7 +14,9 @@ import re
 from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Any, Iterable
+from urllib.parse import quote
 
+import requests
 from huggingface_hub import HfApi, hf_hub_download
 
 
@@ -299,6 +301,25 @@ class BackendRouter:
             # Keep compatibility with lightweight/fake API clients and older
             # Hub clients that do not expose files_metadata.
             files = list(self.api.list_repo_files(repo_id=model_id, repo_type="model"))
+
+        # Older Hub clients may omit the `gated` field from ModelInfo even
+        # though the REST endpoint exposes it. This is a small metadata call;
+        # it never downloads weights and lets the UI explain a 401 in advance.
+        if not gated:
+            try:
+                headers = {}
+                token = os.getenv("HF_TOKEN") or ""
+                if token:
+                    headers["Authorization"] = f"Bearer {token}"
+                response = requests.get(
+                    f"https://huggingface.co/api/models/{quote(model_id, safe='/')}",
+                    headers=headers,
+                    timeout=15,
+                )
+                if response.ok:
+                    gated = response.json().get("gated", False) or False
+            except Exception:
+                pass
         gguf_files = [name for name in files if _is_gguf(name)]
         config: dict[str, Any] = {}