fix(doctor): allow vendor slugs for named custom providers

hermes_cli/doctor.py

@@ -740,6 +740,7 @@ def run_doctor(args):
 
             # Warn if model is set to a provider-prefixed name on a provider that doesn't use them
             provider_for_policy = runtime_provider or catalog_provider
+            provider_policy_id = str(provider_for_policy or "").strip().lower()
             providers_accepting_vendor_slugs = {
                 "openrouter",
                 "custom",
@@ -753,8 +754,9 @@ def run_doctor(args):
             if (
                 default_model
                 and "/" in default_model
-                and provider_for_policy
-                and provider_for_policy not in providers_accepting_vendor_slugs
+                and provider_policy_id
+                and provider_policy_id not in providers_accepting_vendor_slugs
+                and not provider_policy_id.startswith("custom:")
             ):
                 check_warn(
                     f"model.default '{default_model}' uses a vendor/model slug but provider is '{provider_raw}'",

hermes_cli/providers.py

@@ -492,7 +492,10 @@ def get_label(provider_id: str) -> str:
 
 def is_aggregator(provider: str) -> bool:
     """Return True when the provider is a multi-model aggregator."""
-    pdef = get_provider(provider)
+    provider_norm = normalize_provider(provider or "")
+    if provider_norm.startswith("custom:"):
+        return True
+    pdef = get_provider(provider_norm)
     return pdef.is_aggregator if pdef else False
 
 

tests/hermes_cli/test_doctor.py

@@ -540,6 +540,54 @@ def test_run_doctor_accepts_hermes_provider_ids_that_catalog_aliases(
         )
 
 
+def test_run_doctor_accepts_vendor_slugs_for_named_custom_provider(monkeypatch, tmp_path):
+    home = tmp_path / ".hermes"
+    home.mkdir(parents=True, exist_ok=True)
+    (home / "config.yaml").write_text(
+        "model:\n"
+        "  provider: custom:hpc-ai\n"
+        "  default: deepseek/deepseek-v4-flash\n"
+        "custom_providers:\n"
+        "  - name: hpc-ai\n"
+        "    base_url: https://hpc-ai.example/v1\n"
+        "    api_key: test-key\n",
+        encoding="utf-8",
+    )
+
+    monkeypatch.setattr(doctor_mod, "HERMES_HOME", home)
+    monkeypatch.setattr(doctor_mod, "PROJECT_ROOT", tmp_path / "project")
+    monkeypatch.setattr(doctor_mod, "_DHH", str(home))
+    (tmp_path / "project").mkdir(exist_ok=True)
+
+    fake_model_tools = types.SimpleNamespace(
+        check_tool_availability=lambda *a, **kw: ([], []),
+        TOOLSET_REQUIREMENTS={},
+    )
+    monkeypatch.setitem(sys.modules, "model_tools", fake_model_tools)
+
+    try:
+        from hermes_cli import auth as _auth_mod
+        monkeypatch.setattr(_auth_mod, "get_nous_auth_status", lambda: {})
+        monkeypatch.setattr(_auth_mod, "get_codex_auth_status", lambda: {})
+        monkeypatch.setattr(_auth_mod, "get_xai_oauth_auth_status", lambda: {})
+    except Exception:
+        pass
+
+    buf = io.StringIO()
+    with contextlib.redirect_stdout(buf):
+        doctor_mod.run_doctor(Namespace(fix=False))
+
+    out = buf.getvalue()
+    assert "model.provider 'custom:hpc-ai' is not a recognised provider" not in out
+    assert "model.provider 'custom:hpc-ai' is unknown" not in out
+    assert (
+        "model.default 'deepseek/deepseek-v4-flash' uses a vendor/model slug but provider is "
+        "'custom:hpc-ai'"
+        not in out
+    )
+    assert "Either set model.provider to 'openrouter', or drop the vendor prefix." not in out
+
+
 
 
 def test_run_doctor_accepts_kimi_coding_cn_provider(monkeypatch, tmp_path):

tests/hermes_cli/test_model_switch_custom_providers.py

@@ -65,6 +65,15 @@ def test_resolve_provider_full_finds_named_custom_provider():
     assert resolved.source == "user-config"
 
 
+def test_is_aggregator_recognizes_named_custom_provider():
+    assert providers_mod.is_aggregator("custom:hpc-ai") is True
+    assert providers_mod.is_aggregator("custom:litellm") is True
+
+
+def test_is_aggregator_leaves_unknown_provider_non_aggregator():
+    assert providers_mod.is_aggregator("not-a-provider") is False
+
+
 def test_switch_model_accepts_explicit_named_custom_provider(monkeypatch):
     """Shared /model switch pipeline should accept --provider for custom_providers."""
     monkeypatch.setattr(