fix(clf_ai_gateway): list the provider in the proxy Add Model form

main now requires every LlmProviders value to have an entry in
provider_create_fields.json (or be frozen as unlisted), so the Add Model
dropdown cannot silently miss a backend provider. Add the clf_ai_gateway
entry in the same shape as the SCX.ai registration: required API key,
optional API base with https://api.clfaigateway.dev/v1 as placeholder, and
a cost-map model as the default model placeholder. A provider test pins
the entry.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

litellm/proxy/public_endpoints/provider_create_fields.json

@@ -829,6 +829,34 @@
     ],
     "default_model_placeholder": "gpt-3.5-turbo"
   },
+  {
+    "provider": "CLF_AI_GATEWAY",
+    "provider_display_name": "CLF AI Gateway",
+    "litellm_provider": "clf_ai_gateway",
+    "credential_fields": [
+      {
+        "key": "api_base",
+        "label": "API Base",
+        "placeholder": "https://api.clfaigateway.dev/v1",
+        "tooltip": null,
+        "required": false,
+        "field_type": "text",
+        "options": null,
+        "default_value": null
+      },
+      {
+        "key": "api_key",
+        "label": "API Key",
+        "placeholder": null,
+        "tooltip": null,
+        "required": true,
+        "field_type": "password",
+        "options": null,
+        "default_value": null
+      }
+    ],
+    "default_model_placeholder": "clf_ai_gateway/glm-5.3"
+  },
   {
     "provider": "CLOUDFLARE",
     "provider_display_name": "Cloudflare",

tests/test_litellm/llms/clf_ai_gateway/test_clf_ai_gateway_chat_transformation.py

@@ -1,3 +1,6 @@
+import json
+from pathlib import Path
+
 import pytest
 
 import litellm
@@ -145,3 +148,21 @@ def test_advertised_reasoning_efforts_match_the_gateway(model: str) -> None:
     key = f"clf_ai_gateway/{model}"
     entry = {**litellm.model_cost[key], "key": key}
     assert resolve_supported_reasoning_efforts(entry, deployment_is_mapped=True) == GATEWAY_REASONING_EFFORTS[model]
+
+
+def test_selectable_in_the_proxy_add_model_form() -> None:
+    fields_path = Path(litellm.__file__).parent / "proxy" / "public_endpoints" / "provider_create_fields.json"
+    provider_fields = json.loads(fields_path.read_text(encoding="utf-8"))
+    entries = [entry for entry in provider_fields if entry["litellm_provider"] == "clf_ai_gateway"]
+    assert len(entries) == 1
+
+    entry = entries[0]
+    assert entry["provider"] == "CLF_AI_GATEWAY"
+    assert entry["provider_display_name"] == "CLF AI Gateway"
+    assert entry["default_model_placeholder"] in litellm.model_cost
+
+    fields = {field["key"]: field for field in entry["credential_fields"]}
+    assert fields["api_key"]["required"] is True
+    assert fields["api_key"]["field_type"] == "password"
+    assert fields["api_base"]["required"] is False
+    assert fields["api_base"]["placeholder"] == "https://api.clfaigateway.dev/v1"